Answers
It is possible to identify the line of convergence by drawing straight lines down the blood spatter's long axis and noting where the lines intersect.
Where do these two things converge?Area of Convergence,the region where lines connect the long axes of distinct stains to produce intersections, which in two dimensions shows where the blood source is.An area of origin is the point in space where a bloodstain first appeared.If the blood spatter contains at least two drops, the source of the blood can be located. It is possible to identify the line of convergence by drawing straight lines down the blood spatter's long axis and noting where the lines intersect.It is possible to identify the line of convergence by drawing straight lines down the blood spatter's long axis and noting where the lines intersect.The complete question is,
What is forensics along the line of convergence?
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Related Questions
Select the correct answer.
Scientists are monitoring a local snake species. The species went through a rapid habitat change when some of the grassy
meadows they lived in were cleared for new buildings. The snakes have three distinct color variations: green, brown, and
black
The chart shows the number of snakes before and after the event:
green
Before Habitat Change
7,556
5,264
One Year After Habitat Change
1,293
3,948
brown
black
6,450
6.321
Scientists noted that most populations of these snakes around the world have experienced similar habitat changes. What do
you predict for this species as a whole?
They will immediately die out because of low genetic diversity.
O Brown snakes and black snakes will become more common than green snakes.
Green, brown, and black snakes will exist in equal distributions.
Green snakes and brown snakes will die out immediately
Submit
Answers
Answer:
the answer is B. brown snakes and black snakes will become more common than the green snakes.
The input distance on an inclined plane is 12 M and the output distance is 3 m. What is the ideal mechanical advantage of the inclined plane
Answers
Answer:
4
Explanation:
The ideal mechanical advantage of an inclined plane can be calculated as
\(\text{ ideal mechanical advantage = }\frac{\text{ Input distance}}{\text{ Output distance}}\)So, replacing input distance = 12 m and output distance = 3 m, we get:
\(\text{ ideal mechanical advantage = }\frac{12\text{ m}}{3\text{ m}}=\text{ 4}\)Therefore, the answer is 4.
In a very busy off-campus eatery one chef sends a 201 g broccoli-tomato-pickle-onion-mushroom pizza sliding down the counter from left to right at 1.79 m/s. Almost simultaneously, the other chef launches a 335 g veggieburger (with everything, but hold the horseradish) along the same counter from right to left at 2.47 m/s. The two delicacies collide head on at the given speeds. The counter is practically friction free due to accumulated grease. The two delicacies merge into a single, unbelievably savory serving.A. In what direction does the delectible dish move, if it moves at all?B. At what speed does it move? Enter a positive number.
Answers
Answer:
The correct answer is:
(A) to the left
(B) at speed -0.8725 m/s
Explanation:
The given values are:
Plate 1:
Mass,
m₁ = 201 g
Velocity,
v₁ = +1.79 m/s
Plate 2:
Mass,
m₁ = 335 g
Velocity,
v₁ = -2.47 m/s
According to the conservation of momentum, we get
⇒ \(m_1v_1+m_2v_2=(m_1+m_2)v\)
then,
⇒ \(v=\frac{m_1v_1+m_2v_2}{m_1+m_2}\)
On substituting the values, we get
⇒ \(=\frac{201\times 1.79+335\times (-2.47)}{201+335}\)
⇒ \(=\frac{359.79-827.45}{536}\)
⇒ \(=\frac{-467.66}{536}\)
⇒ \(=-0.8725\) (to the left)
The sum is of two or more vectors is
Answers
Explanation:
the sum of two or more vector is resultant vector.
-3 *10^-5 c Point charge placed at the origin of the coordinates Calculate the electric field at a point x=5m on the x axis
Answers
Answer: This is the best I could do.
Explanation:
10. What is the acceleration of the object at 2
seconds?
a. O m/s2
b. 2 m/s2
C. 4 m/s2
d. 8 m/s2
Answers
Answer: B
Explanation: Becuase 2 seconds= 2ms a 2 mitler second delay!
As we know,
\(a = \dfrac{v - u}{t} \)\(a = \dfrac{4 - 2}{2 - 1} \)\( \dfrac{2}{1} \)\(2 \: \: m {s}^{ - 2} \)Find the sound level in dB of 6.87 10-2 W/m2 ultrasound used in medical diagnostics.
Answers
Sound level in dB of the ultrasound used in medical diagnostics is approximately 99.7 dB.
What is ultrasound?Ultrasound is an imaging method that uses sound waves to produce images of structures within body.
SIL = 10 log10(I/I0)
where I is sound intensity in watts per square meter, and I0 is reference sound intensity of 1 picowatt per square meter (1 p W/m²).
SIL = 10 log10(6.87 × 10⁻² W/m² / 1 p W/m²)
= 10 log10(6.87 × 10²) + 10 log10(10¹²)
= 10 log10(6.87 × 10⁻²) + 120
1 p W/m² = 10⁻¹² W/m^2.
SIL = 10 log10(6.87 × 10⁻²) + 120
= 99.7 dB
Therefore, the sound level in dB of the ultrasound used in medical diagnostics is approximately 99.7 dB.
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The mass of an empty cylindrical tin is
proportional to its surface area.
Two empty cylindrical tins, G and H, are
shown below.
The mass of tin G is 72 g, and the surface
area of tin H is 792π cm².
2
a) Work out the total surface area of tin G in
terms of π.
b) Work out the mass of tin H.
Tin G
12 cm
5 cm
Tin H
Not drawn accurately
Answers
a) The total surface area of tin G in terms of π is 170π cm².
b) The mass of tin H is 336 g.
To solve the given problem, we need to determine the total surface area of tin G in terms of π and the mass of tin H. Since the mass of an empty cylindrical tin is proportional to its surface area, we can use the given information to find the solutions.
a) Total surface area of tin G in terms of π:
The surface area of a cylinder consists of two circular bases and the lateral surface area. The formula for the lateral surface area of a cylinder is given by:
Lateral surface area = 2πrh
where r is the radius of the base and h is the height of the cylinder.
In the case of tin G, the given dimensions are a radius of 5 cm and a height of 12 cm. Substituting these values into the formula, we can calculate the lateral surface area:
Lateral surface area = 2π(5 cm)(12 cm)
Lateral surface area = 120π cm²
Since the total surface area of the cylinder includes the two circular bases as well, we need to add their areas. The area of a circle is given by:
Area of a circle = πr²
The radius of the circular base of tin G is 5 cm, so the area of each circular base is:
Area of each circular base = π(5 cm)²
Area of each circular base = 25π cm²
To find the total surface area of tin G, we sum the lateral surface area and the areas of the two circular bases:
Total surface area of tin G = Lateral surface area + 2 × Area of each circular base
Total surface area of tin G = 120π cm² + 2 × 25π cm²
Total surface area of tin G = 120π cm² + 50π cm²
Total surface area of tin G = 170π cm²
Therefore, the total surface area of tin G in terms of π is 170π cm².
b) Mass of tin H:
We are given that the surface area of tin H is 792π cm². We can assume that the same proportionality factor applies as in tin G, so we can set up the following proportion:
(surface area of tin G) / (mass of tin G) = (surface area of tin H) / (mass of tin H)
Using the given values, we have:
(170π cm²) / (72 g) = (792π cm²) / (mass of tin H)
Cross-multiplying and solving for the mass of tin H, we get:
(170π cm²) × (mass of tin H) = (72 g) × (792π cm²)
mass of tin H = (72 g) × (792π cm²) / (170π cm²)
mass of tin H = 336 g
Therefore, the mass of tin H is 336 g.
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TAKE 100 Points!! PLEASE Help Me.Find the cut and slope just look the picture.
Answers
I’m so sorry if I am wrong
And hope it helped
Explain the light detection technique of photovoltaic detection
Answers
Answer:
Photovoltaic detection is a technique that converts light into electrical energy. It is a process that involves the use of a photovoltaic cell, which is made up of semiconductor materials, to generate an electric current when exposed to light.
The photovoltaic cell absorbs the photons of light, which then knock electrons out of their orbits, creating a flow of electricity. The amount of electricity produced is proportional to the intensity of the light. The photovoltaic cell is commonly used in solar panels to generate electricity from sunlight. The efficiency of the photovoltaic cell is dependent on several factors, including the type of semiconductor material used, the purity of the material, and the thickness of the cell.
The photovoltaic cell has many applications, including in solar power generation, telecommunications, and remote sensing. The technique of photovoltaic detection is an important area of research, as it has the potential to provide a clean and renewable source of energy that can help mitigate climate change.
Learn more about Photovoltaic detection
a question was asked by a teacher to a student. She gave the student a jumbled word and told him to make words out of it. The jumbled word is gzeysktqix. Now you know what to do. see ya!
Answers
When the teacher asked the student to make words out of the jumbled word gzeysktqix, the student was being tested on his ability to unscramble words. Unscrambling words is the process of taking a word or series of letters that are out of order and rearranging them to form a word that makes sense.
When trying to unscramble a word, it is important to look for any patterns that can help identify smaller words within the jumbled letters. This can help make the process easier and quicker. For example, in the jumbled word gzeysktqix, one might notice that the letters "sktqix" appear together.
This could indicate that these letters could potentially form a word. By looking at the remaining letters, one could notice that the letters "g", "z", "e", and "y" could also form smaller words. After some rearranging, the letters can be unscrambled to form the words "sky", "zig", "sex", and "yet". These are just a few examples, as there are likely many other words that can be formed from this jumbled word.
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Find the mass of an object on planet F if its weight is 650 N (g = 13m/s^2)
Answers
Answer:
the object's mass is 50 kg
Explanation:
We use Newton's second law to solve for the mass:
F = m * a , then m = F / a
In our case, the acceleration is the gravitational acceleration on the planet, and the force is the weight of the object on the planet. So we get:
m = w / a = 650 N / 13 m/s^2 = 50 kg
Then, the object's mass is 50 kg.
A golf ball rolls up a hill toward a miniature-golf hole. Assume the direction toward the hole is positive. If the golf ball starts with a speed of 2.0 m/s and slows at a constant rate of 0.50 m/s2. What is the golf ball’s velocity if the constant acceleration continues for 6.0 s? *
Answers
Answer:
0.2533333334
Explanation:
It is simple, just do the math
A motorcycle traveling south reaches a speed of 38.0 m/s. It then begins uniform negative acceleration and comes to rest after 7.359s. How far did the motorcycle travel in this time?
Answers
Answer: 30.641
Explanation: If you get the ave which is 38.0 then the vi which is 7.359
38.0-7.359=30.641/0.0 which is 30.641
The two masses (mA
= 6.50 kg is hanging and mB
= 3.30 kg is on the floor) in the Atwood's machine shown in the figure below are released from rest, with mA
at a height of 0.865 m above the floor. When mA
hits the ground its speed is 1.89 m/s. The pulley is not massless and can be considered a solid disk with a moment of inertia of (1/2)mpr2
.
What is the total mechanical energy of the two blocks prior to being released from rest?
(Figure 1)
What is the total mechanical energy of the two blocks when mA
hits the ground?
Part C
What is the rotational kinetic energy of the pulley just before mA
hits the ground?
Part D
What is the mass of the pulley?
Answers
A)The total mechanical energy of the two blocks prior to being released from rest can be found by adding the gravitational potential energy of mA and the pulley to zero.
B).The gravitational potential energy of mB and the pulley is(3.30 kg + mp) × 9.81 m/s² × 0 m = 0 J,where mp is the mass of the pulley.The total mechanical energy of the two blocks prior to being released from rest is54.33 J + 0 J = 54.33 J
C) The rotational kinetic energy of the pulley just before mA hits the ground is(0.178 mp) J.
D) The mass of the pulley ismp = (1/2)mpr²/R² =(1/2)(0.020 kg)(0.100 m)²/(0.200 m)² = 0.001 kg = 1 g.r = (1/2)R.
The Atwood's machine shown in Figure 1 consists of two masses mA = 6.50 kg and mB = 3.30 kg. The height of mA above the floor is 0.865 m. When mA hits the floor, its velocity is 1.89 m/s. The pulley has a moment of inertia (1/2)mpr². We have to find the total mechanical energy of the two blocks before they are released, the total mechanical energy when mA hits the ground, the rotational kinetic energy of the pulley just before mA hits the ground, and the mass of the pulley. Let's solve these one by one. Part A The total mechanical energy of the two blocks prior to being released from rest can be found by adding the gravitational potential energy of mA and the pulley to zero.
The equation for gravitational potential energy is mgh. The gravitational potential energy of mA and mB is mAg(h-hB)where h is the height of mA above the floor and hB is the height of mB above the floor. Since the pulley is at the same height as mB, its gravitational potential energy ismBg(h-hB).The gravitational potential energy of mA is6.50 kg × 9.81 m/s² × 0.865 m = 54.33 J.The gravitational potential energy of mB and the pulley is(3.30 kg + mp) × 9.81 m/s² × 0 m = 0 J,where mp is the mass of the pulley.The total mechanical energy of the two blocks prior to being released from rest is54.33 J + 0 J = 54.33 J.Part BThe total mechanical energy of the two blocks when mA hits the ground can be found by adding the kinetic energy of mA, the kinetic energy of mB, and the rotational kinetic energy of the pulley to the gravitational potential energy of mB and the pulley. The equation for kinetic energy is (1/2)mv². The kinetic energy of mA is(1/2) × 6.50 kg × (1.89 m/s)² = 11.54 J.The kinetic energy of mB is(1/2) × 3.30 kg × 0 m/s² = 0 J, since it is at rest.The gravitational potential energy of mB and the pulley is(3.30 kg + mp) × 9.81 m/s² × 0 m = 0 J.The rotational kinetic energy of the pulley is(1/2) × (1/2)mp × R² × ω²,where R is the radius of the pulley and ω is its angular velocity just before mA hits the ground. We can use the fact that the linear speed of the rope is the same on both sides of the pulley to find ω. The equation for linear speed is v = Rω. When mA hits the ground, its speed is 1.89 m/s. The speed of mB is zero. Since the rope is inextensible, the speed of the rope is also 1.89 m/s.
Therefore, the speed of the pulley is also 1.89 m/s. We can find the angular velocity of the pulley by dividing the linear velocity by the radius.ω = v/R = 1.89 m/s ÷ (0.200 m/2) = 18.9 rad/s.The rotational kinetic energy of the pulley is(1/2) × (1/2)mp × R² × ω² =(1/4)mpR²ω² =(1/4)mp(0.200 m)²(18.9 rad/s)² =(0.178 mp) J.The total mechanical energy of the two blocks when mA hits the ground is11.54 J + 0 J + 0 J + (0.178 mp) J = 11.72 J + (0.178 mp) J.Part CThe rotational kinetic energy of the pulley just before mA hits the ground is(0.178 mp) J.Part DWe can find the mass of the pulley by using the moment of inertia of a disk and the mass of the pulley. The moment of inertia of a disk is (1/2)mr². Therefore,(1/2)mpR² = (1/2)mpr²,where R is the radius of the pulley and r is the radius of gyration of the pulley. The radius of gyration of a disk is (1/2)R.
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The mass of a material is a/an ___________.
Answers
Answer:
Extensive property
Explanation:
Answer:
Extensive property
Explanation:
Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. Density is commonly expressed in units of grams per cubic centimetre.
Which of the following is NOT a possible type of law that a government could pass to help fight climate change?
1. Making greenhouses gas production illegal
2. Regulating the amount of greenhouse gases businesses can produce
3. Funding research on technologies that are better for the environment than those we currently use
4. Providing tax incentives for businesses and people to take action
Answers
Answer:
4
Explanation:
because people could lie about it
A compact car can climb a hill in 10 s. The top of the hill is 30 m higher than the
bottom, and the car's mass is 1,000 kg What is the power output of the car?
Answers
Answer:
29.4 kW
Explanation:
time t = 10 s, height h = 30 m, mass m = 1,000 kg
power output = work done/time
work done = increase in potential energy = mgh = 1,000 * 9.8 * 30 = 294,000 J = 294 kJ
power output = 294/10 = 29.4 kW
The lower the angle of the slope, ________ the acceleration along the ramp, therefore, the speed at the bottom of a slope will be_______, and, consequently, the control will be better.
The acceleration along the ramp, therefore, the speed at the bottom of a slope will be:__________
a. lower
b. gcostheta
c. higher
d. gsintheta
Answers
Answer:
Lower
Lower
gsintheta (gsinθ)
Explanation:
The sum of forces resolved parallel to the inclined plane is given by;
F - mgsinθ = 0
ma - mgsinθ = 0
ma = mgsinθ
a = gsinθ
Acceleration is proportional to angle of inclination, thus the lower the angle of the slope, lower the acceleration along the ramp.
therefore, the speed at the bottom of a slope will be lower, (velocity is directly proportional to acceleration) and, consequently, the control will be better.
The acceleration along the ramp, is gsintheta (gsinθ)
What is the magnitude of velocity for a 2,000 kg car possessing 3,000 kg.m/s of
momentum?
Answers
Answer:
The product of the mass and the volume is known as momentum.
According to the law of momentum, it is stated that the two or more bodies remain in a constant state unless an external force is applied in an isolated room.
Momentum depends on the following:-
Mass
Velocity
Momentum = MASS \ X \ VOLUMEMomentum=MASS X VOLUME
\begin{gathered}momentum = 3000kgm/s\\\\mass = 2000kg\\\\velocity =\frac{momentum}{mass}\\\\v= \frac{3000}{2000} \\\\v= 1.5m/s\end{gathered}
momentum=3000kgm/s
mass=2000kg
velocity=
mass
momentum
v=
2000
3000
v=1.5m/s
how does Math work in periodic Tables like protons neutrons and electrons
Answers
Answer:
The stability of isotopes is affected by the ratio of protons to neutrons and also by the presence of certain “magic” numbers of protons or neutrons that represent closed and filled quantum shells. These quantum shells correspond to the shell model of the nucleus. Filled shells confer unusual stability on a nuclide. A magic number for the atomic number (with filled shells) tends to increase the number of stable isotopes of an element.
Explanation:
What is your opinion on Moonman? ( Do not delete this saying it is "racist". it is simply a character from a commercial called Mac Tonight from mcdonalds )
Answers
Answer:
I think hes cool
Explanation:
Which of the following scenarios involves at least one chemical change happening? (2 points)
Group of answer choices
Before you go swimming, you need to fill up the pool because evaporation has decreased the volume.
During the summer time, you are hired to sand your neighbor's fence and paint it white.
In the fall, one of your chores is to cut up wood and stack it in the basement for your parents.
Your summer job for the year is to pick strawberries. At the end of the day you have to crush the ones turning rotten to make strawberry jam.
Answers
The scenario that involves at least one chemical change happening is your summer job for the year is to pick strawberries. At the end of the day, you have to crush the ones turning rotten to make strawberry jam. The correct option is D.
What is a chemical change?When bonds between molecules or atoms are created, disrupted, or both, chemical changes result. This implies that a substance with a particular set of properties—such as melting point, color, flavor, etc.—becomes a substance with a different set of characteristics.
Three essential chemical components are used in the production of jam: Acids, sugar, and pectin.
Therefore, the correct option is D, Your summer job for the year is to pick strawberries. At the end of the day, you have to crush the ones turning rotten to make strawberry jam.
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Question 17 of 25
Which two phrases describe critical thinking skills used in the pursuit of
science?
A. Concluding that one comet is more interesting than another
comet
B. Analyzing observations of a comet's velocity to estimate when it
will pass by the Sun again
OC. Gathering people's opinions about the historical impacts that
comet appearances had on society
D. Evaluating whether research into comets should be funded by the
government
E. Writing detailed descriptions of a comet's appearance as seen
through a telescope
Answers
The two phrases that describe the critical thinking skills used in the pursuit of science are options B and E. Analyzing observations of a comet's velocity to estimate when it will pass by the sun again and writing detailed description of comet.
What is critical thinking skill?Critical thinking skills are very important in scientific investigations and data interpretations. Thinking on an observation or scientific backgrounds of a phenomenon and solving complex problems and sorting it eventually leads to the accurate conclusions for the problem.
Here, the estimation of velocity of a comet for its passage around sun will involve critical thinking and use of some theoretical knowledge as well. Gathering of people's opinion or searching history or for fund does nor need any critical thinking.
Making a description of comet through he observation by telescope also need some critical thinking. Therefore, options B and E are correct.
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for a solar eclipse to occur which of the following alignments must be necessary
Answers
A cyclist and his bicycle have a combined mass of 85 kg. If he is moving at
12 m/s, how much KE does he have?
Your nour
Answers
Answer:
211.2 kg:m/s
Explanation:
Mark brainily
Which of the following diagrams involves an upright image?
A convex lens is shown centered at 7 on a ruler that goes from 0 to 14 centimeters. The object is located at 6, and the focal points are at 5.5 and 8.5. The three light rays are shown to form the image located at 4.
A concave mirror is shown with curvature positioned at 8 on a ruler that goes from 0 to 14 centimeters. The object is located at 5, and the focal point is located at 6.5. Two light rays are shown to form the image located at 5.
A convex lens is shown centered at 7 on a ruler that goes from 0 to 14 centimeters. The object is located at 4, and the focal points are at 5.5 and 8.5. The three light rays are shown to form the image located at 10.
Answers
The only diagram that features an upright image is the convex lens one. The image is reversed in all of the other diagrams.
A convex lens is what?The convex lens, which is relatively thick in the middle and thin at the lower and upper edges, is a lens that converges light rays that travel parallel to its principal axis. Instead of curving inside, the edges are curled outward.
What purposes serve concave lenses?For the nearsighted, convex lenses are better than concave ones. Nearsightedness is treated with glasses that have concave lenses. Nearsighted individuals have an abnormally lengthy distance between their eye's lens and retina, which prevents them from seeing distant objects.
What distinguishes a convex lens from a concave lens?A concave lens or diverging lens diverges the light rays, whereas a convex lens or converging lens concentrates the light rays to a particular point. Based on the laws of refraction, a lens is a transparent substance.
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we know that the current in the circuit is growing. it will approach a steady state after a long time (as t tends to infinity), which implies that the differential term in our circuit equation will tend to zero, hence simplifying our equation. the current around the circuit will tend to an asymptotic value iasympasymp . what is iasympasymp ?express your answer in terms of vbb and r and other constants and variables given in the introduction.
Answers
As a result, iasymp = Vbb / R is the asymptotic value of the current in the circuit.
If the magnitude of the voltage is increased or decreased, what do you believe will happen to the current?According to Ohm's rule, the resistance (R) in a circuit has an inverse relationship to the electrical current (I), which is proportional to the voltage (V) (R). Consequently, if the voltage is raised, the current will rise as long as the circuit's resistance remains constant.
For the specified circuit, the circuit equation is:
L di/dt + R i = Vbb
Di/dt tends to zero as the current approaches a steady state.
R iasymp = Vbb
where iasymp is the current in the circuit's asymptotic value.
When we solve for iasymp, we obtain:
iasymp = Vbb / R
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A teacher is examining laboratory supplies with a diverging lens. The lens has a focal length of magnitude 19.4 cm. The lens is always held between the teacher's eye and the object under study. However, the distance between the lens and the object is different for each object that the teacher observes.
Determine the image location and magnification for each of the following three objects. In addition, determine whether the image is real or virtual, whether it is upright or inverted, and whether it makes the object appear larger or smaller than actual size.
A) The object lies 38.8 cm behind the lens. Determine the image location. (Enter the magnitude in cm.)
|q| =
Determine the magnification.
M =
Select all of the following that apply to the image formed in part (a).
- real
- virtual
- upright
- inverted
- enlarged
- shrunken
B) A) The object lies 19.4 cm behind the lens. Determine the image location. (Enter the magnitude in cm.)
|q| =
Determine the magnification.
M =
Select all of the following that apply to the image formed in part (b).
- real
- virtual
- upright
- inverted
- enlarged
- shrunken
C) A) The object lies 9.70 cm behind the lens. Determine the image location. (Enter the magnitude in cm.)
|q| =
Determine the magnification.
M =
Select all of the following that apply to the image formed in part (c).
- real
- virtual
- upright
- inverted
- enlarged
- shrunken
Answers
The answers are (a) |q| = 58.2 cm, M = -1.50, virtual, upright, shrunk; (b) |q| =, M = -, actual, substantially magnified; and (c) |q| = 6.5 cm, M = -1.68, virtual, upright, enlarged.
We can use the magnification formula and the thin lens equation to solve:
Where f is the lens's focal length, d_i is the image distance, and d_o is the object distance, the equation is: 1/f = 1/d_i + 1/d_o.
The formula for magnification is M = -d_i/d_o, where M stands for magnification.
For part (a), the object distance is d_o = -38.8 cm and the focal length is f = -19.4 cm.
1/-19.4 = 1/d_i + 1/-38.8
|d_i| = 58.2 cm
The image is virtual and smaller than the object (since the magnification is less than 1)
For part (b), the object distance is d_o = -19.4 cm, and the focal length is f = -19.4 cm.
1/-19.4 = 1/d_i + 1/-19.4
|d_i| = ∞
The image is at infinity, which means it is a real image and highly magnified (since the object distance is close to the focal length).
For part (c), the object distance is d_o = -9.70 cm, and the focal length is f = -19.4 cm.
1/-19.4 = 1/d_i + 1/-9.70
|d_i| = 6.5 cm
The image is virtual and larger than the object (since the magnification is greater than 1).
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Fig above shows a wave traveling through a medium. Use the fig to answer the questions below.
A.)What is the amplitude of the wave ? Include correct units.
B.)Use the graph to determine the time of one wave. Use it to find the frequency.
C.)If the speed of the wave is 25 m/s, what is the wavelength of the wave ? Show data listing, equation , substitution leading to the answer for full credit.
Answers
(a) The amplitude of the wave is 0.2 m.
(b) The period of the wave is 4 s.
(c) The wavelength of the wave is 100 m.
What is the amplitude of the wave?(a) The amplitude of the wave is the maximum displacement of the wave.
amplitude of the wave = 0.2 m
(b) The period of the wave is the time taken for the wave to make one complete cycle.
period of the wave = 5.5 s - 1.5 s = 4 s
(c) The wavelength of the wave is calculated as follows;
λ = v / f
where;
v is the speed of the wavef is the frequency of the wavef = 1/t = 1 / 4s = 0.25 Hz
λ = ( 25 m/s ) / 0.25 Hz
λ = 100 m
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