Two bodies having mass of 5 kg and 20 kg dropped from same height (free fall) which body will hit the ground first please tell
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Related Questions
Which use of iron is due to its chemical properties?
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1) What is the diameter of the disk of the Milky Way? A) 100 light-years B) 1,000 light-years C) 10,000 light-years D) 100,000 light-years E) 1,000,000 light-years
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The diameter of the disk of the Milky Way is D) 100,000 light-years. This value has been estimated through various methods, including measurements of the positions and velocities of stars, gas, and other astronomical objects within the galaxy.
The Milky Way is a barred spiral galaxy, meaning it has a central bar-shaped structure surrounded by a disk of stars, gas, and dust. The disk is flattened and rotates around the galactic center, which contains a supermassive black hole. The disk is about 1,000 light-years thick, but its diameter is much larger, extending up to 100,000 light-years from end to end. This means that it takes light approximately 100,000 years to travel from one end of the disk to the other. However, the exact size of the Milky Way is still uncertain, as it is difficult to measure the distance to the outer edges of the disk. Scientists continue to study the Milky Way to better understand its structure and evolution.
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Why are images reflected from a rough surface not as clear as those reflected from a smooth
surface?
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Answer:
Just as images are reflected from the surface of a mirror, light reflected from a smooth water surface also produced a clear image. ... Consequently, the outgoing rays are reflected at many different angles and the image is disrupted. Reflection from such a rough surface is called diffuse reflection and appears matte.
Explanation:
hi po I hope it's help you
Helium in the sun is produced by which process?.
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Nuclear Fusion is a process by which the nucleus of the two atoms fuses to form a completely new element. The Helium in the sun is produced by the process of nuclear fusion.
Nuclear Fusion:It is a process by which the nucleus of the two atoms fuses to form a completely new element.
For Example-
In the core of the sun is very high temperature and pressure, two hydrogens nuclei fuse to form Helium.Hydrogen has 1 proton, and helium has two protons in the nucleus.Therefore, the Helium in the sun is produced by the process of nuclear fusion.
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a single slit of widthis illuminated by asodium yellow light of wavelength 589 nm. findthe intensity at aangle to the axis in termsof the intensity of the central maximum.
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According to the following formula, the intensity upon an angle with the axis Intensity is defined as (Central Highest Intensity) * (sinc (angle * /w))2.
in which the slit's width (w) and also the light's wavelength () are both given.
Accordingly, the concentration perpendicular towards the axis is equal to the intensity of something like the central maximum and is as follows:
Intensity is measured in terms: (Centre Maximum Intensity) * (sinc (angle * 589 nm/w))2
The the light's intensity at such an angles towards the center maxima can indeed be computed utilizing diffraction equation theory and presuming the singular slits is just a rectangle split according follows:
I() = I0 sin2 (Bsin/I)
Here B is the slit's width, I0 is the center maximum's intensity, & seems to be the light's wavelengths.
Substituting the given values we get:
I(θ) = I₀ sin²(πBsinθ/589 x 10⁻⁹ m)
For sodium yellow light (589 nm), the intensity of the central maximum is I₀.
In addition to highlighting of the center maxima, the intensity at such an angle with the axis is nonetheless:
I(θ) = I₀ sin²(πBsinθ/589 x 10⁻⁹ m)
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Developing a Strategy
Now that you have an obstacle in mind, take another few minutes and think about which success strategy might best help you overcome this obstacle. Write this strategy in the box below:
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Explanation:
Look at your resources around you, find ways to cope with the situation.
Look at your environment or what is there around you that can help you.
Is there anyone that can help you.
Think more.
Try thinking outside of the box
Don't be logical
I wasn't sure if you meant this mentally or physically.
a skydiver jumps out of an airplane. what is her terminal velocity in miles per hour (mph), assuming that for free-fall (no parachute)? terminal velocity
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The skydiver is falling at a velocity of 212 kilometres per hour. The speed of the skydiver is 212 miles per hour.
If a skydiver leaps out of a plane and lands at 212 mph, it is necessary to know the skydiver's velocity and speed. Velocity is speed with a direction, whereas speed just exists as a number with a speed unit at the end. While velocity refers to both the speed and direction of an object's motion, speed is the rate at which an object moves along a path over time. The skydiver is falling at a speed of 212 kilometres per hour. 212 kilometres per hour is the speed at which the skydiver is travelling. Speed is the rate at which an object travels along a path over time, as opposed to velocity, which describes the speed and direction of an object's motion. A scalar quantity is speed.
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angela runs and slides across an icy path in her driveway. she comes to a stop because of friction. which free-body diagram shows her while she is sliding?
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Answer: C
Explanation: You always have weight pushing down and natural force pushing up to neutralize those forces. The you add in friction and that’s how you find the answer. Plus I got it right in my quiz
What are two ways the brain can be manipulated
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Answer:
Meditation and Positive Thinking
Explanation:
According to Jean Piaget, unrealistic idealism often occurs in adolescence as a result of __________. Rational thought egocentrism environmental conditions lack of education.
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According to Jean Piaget, unrealistic idealism often occurs in adolescence as a result of egocentrism. The inability to distinguish between self and others is referred to as egocentrism.
What is egocentrism?The inability to distinguish between self and others is referred to as egocentrism. It is, more precisely, the incapacity to effectively assume or comprehend any viewpoint other than one's own.
Egocentrism may be present in every stage of life, including childhood, adolescence, and maturity.
Hence option B is correct. According to Jean Piaget, unrealistic idealism often occurs in adolescence as a result of egocentrism.
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Answer:
egocentrismgot it right⬇️✅
When you drop a book, the earth exerts an upward force of 20 newtons on the book. If the book drops 2 meters, how much work did the earth do on the book? Show your work & include units. (I need help fast!!!!)
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The Earth does 40 Joules of Work on the book as it drops 2 meters.
Because, when an object is dropped, gravity pulls it down towards the center of the Earth. In this case, the Earth exerts an upward force of 20 Newtons on the book to counteract the force of gravity.
The work done by the Earth on the book can be calculated as follows:
\(Work = Force x Distance x Cosine(theta)\)
In this case, the force is 20 Newtons, and the angle between the force and the distance is 0 degrees (since the force is acting in the same direction as the distance).
So,
\(Work = 20 N x 2 m x Cos(0) = 40 Joules\)
Therefore, the Earth does 40 Joules of work on the book as it drops 2 meters.
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what is the relationship between instantaneous speed and instantaneous velocity? group of answer choices they are unrelated. instantaneous speed is the initial speed minus the final speed. instantaneous speed is the rate at which the instantaneous velocity is changing. instantaneous speed is the magnitude of the instantaneous velocity. they are identical.
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The relationship between instantaneous speed and instantaneous velocity is that instantaneous speed is the magnitude of the instantaneous velocity.
Instantaneous velocity is the rate of change of position for a very small interval of time. The interval of time so that that its value is almost zero. Instantaneous speed is the magnitude of instantaneous velocity without any direction.
The instantaneous velocity is vector quantity just like velocity and the instantaneous velocity is a scalar quantity just like speed. The value of if instantaneous velocity with direction is instantaneous velocity.
Therefore, the relationship between instantaneous speed and instantaneous velocity is that instantaneous speed is the magnitude of the instantaneous velocity.
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Convert 3.8 kg to Lbs
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Answer:
8.37757
Explanation:
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a box takes 350 N to start moving the coefficient of static friction is 0.35. what is the weight of the box?
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Answer:
101.937 kg
Explanation:
The force needed to get the box moving must just cancel the static friction force:
F = µsmg = 0.35•m•9.81 = 350 ---> m = 350 / (0.35•9.81) = 101.937 kg
Again, with units shown, and using 1 N = 1 kg•m/s2:
0.35•m•9.81(m/s2) = 350 N
solving for m:
m = 350 N / (0.35•9.81 m/s2) = (350 kg•m/s2) / (3.434 m/s2 ) = 101.937 kg
______________________
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Find the power delivered to an element at t=4 ms if the current entering its positive terminal is i=5cos60πt(A) and the voltage is: (a) v=2i, (b) v=2di/dt.
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The power delivered to an element at t=4 ms if the current entering its positive terminal is i=5cos60πt(A) and the voltage is (a) v=2i, (b) v=2di/dt is P = 50 cos²(60πt) watts and P = -50π sin(60πt)cos(60πt) watts, respectively.
The current entering the positive terminal is
i=5cos(60πt)
The voltage is, (a) v=2i, (b) v=2di/dt
(a) Voltage, V = 2 i = 2 * 5 cos(60πt)
V = 10 cos(60πt)
Let's calculate the power by the formula,
P = V * iP = 10 cos(60πt) * 5 cos(60πt)
P = 50 cos²(60πt) watts
(b) Voltage, V = 2(di/dt) = 2 * -5π sin(60πt)
V = -10π sin(60πt)
Let's identify the power by the formula,
P = V * iP = -10π sin(60πt) * 5 cos(60πt)
P = -50π sin(60πt)cos(60πt) watts
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A sprinter Sarting from rest reaches a top speed of 10 m/s im 5 s calculate the average acceleration
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Answer:
2 м/с
Explanation:
Скорость надо разделить на время, за которое она достигается (10/5=2)
the most exacting measure of logistics performance regarding availability is
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The most exacting measure of logistics performance regarding availability is the Perfect Order Fulfillment (POF) metric. POF is a comprehensive measure that evaluates the ability of a logistics system to fulfill customer orders accurately, on time, and in full.
Perfect Order Fulfillment (POF) takes into account several key aspects of availability, including order accuracy, delivery timeliness, and complete fulfillment. It considers factors such as product availability, inventory management, order processing efficiency, and transportation reliability. POF aims to measure the percentage of orders that are fulfilled flawlessly from start to finish. A high POF score indicates a logistics system that consistently delivers products to customers with a minimal number of errors, delays, or incomplete shipments. It reflects the effectiveness of processes, systems, and coordination across the entire supply chain, from sourcing to delivery.
By focusing on availability, POF addresses the critical aspect of ensuring that products are readily accessible to meet customer demand. It provides a holistic and demanding measure that captures the performance of logistics operations regarding availability, offering valuable insights for continuous improvement and enhancing customer satisfaction.
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Answer:
Orders shipped complete
Explanation:
The most exacting measure of logistics performance regarding availability is: orders shipped complete.
If a ball is thrown from a tall building, how tall is the building if it takes 6s for the ball to land?
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Answer:
the answer is 352.8m
Explanation:
Since the gravitational constant is denoted as g
\(g = 9.8 \: \frac{m}{ {s}^{2} }\)
and the ball needed 6 seconds to land, so we can calculate the height of the building as:
\(h = 9.8 \: \frac{m}{ {s}^{2} } \times {(6s)}^{2} = 9.8 \: \frac{m}{ {s}^{2} } \times 36 {s}^{2} = 352.8m\)
The total lung capacity of a typical adult is 5.5 L Approximately 20% of the air is oxygen. ▼ Part A At sea level and at a body temperature of 37°C, how many oxygen molecules do the lungs contain at the end of a strong inhalation? Express your answer using two significant figures. molecules of oxygen Submit Request Answer
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The number of oxygen molecules in the lungs at the end of a strong inhalation is 2.96 × 10^22.
To calculate the number of oxygen molecules in the lungs at the end of a strong inhalation, we need to determine the volume of oxygen inhaled and then convert it to the number of molecules.
Given that the total lung capacity is 5.5 L and approximately 20% of the air is oxygen, we can calculate the volume of inhaled oxygen:
Volume of oxygen = 5.5 L × 0.20 = 1.1 L
Next, we need to convert the volume of oxygen to the number of molecules using the ideal gas law and Avogadro's number.
1 mole of gas occupies 22.4 L at standard temperature and pressure (STP), which is approximately 6.022 × 10^23 molecules.
1 L of gas at STP contains (6.022 × 10^23) / 22.4 ≈ 2.69 × 10^22 molecules.
Therefore, the number of oxygen molecules in the lungs at the end of a strong inhalation is:
Number of oxygen molecules = 1.1 L × 2.69 × 10^22 molecules/L
Calculating this value, we find the number of oxygen molecules in the lungs at the end of a strong inhalation to be approximately 2.96 × 10^22 molecules.
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Typical electrical wires in your house are generally made of copper (electron density of 8.47∗1024 electrons per cm3 ) and are usually either 14 gauge (diameter of 1.63 mm ), 12 gauge (diameter of 2.05 mm ), or 10gauge(2.59 mm) wires.
(A) If you have a 14 gauge wire that is carrying the maximum current of 20 , what would be the average drift speed of the electrons in the wire? Tries 1/8
(B) Usinq the averaqe speed you just calculated in Part (A), how much time would it take an electron to travel 8.84 m?
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A. The average drift speed of the electrons in the wire is 1.19 x \(10^{-3}\)cm/s.
B. The time it would take an electron to travel 8.84 m is 7.43 x \(10^{5}\)sec
(A) To find the average drift speed of electrons in a wire, we can use the equation:
I = nAvq
Where:
I is the current in Amperes
n is the electron density in electrons per \(cm^{3}\)
A is the cross-sectional area of the wire in \(cm^{2}\)
v is the average drift velocity of electrons in cm/s
q is the charge of an electron, which is 1.6 x \(10^{-19}\) Coulombs
First, we need to find the cross-sectional area of the wire. The formula for the area of a circle is:
A = π\(r^{2}\)
Where:
A is the area of the circle
r is the radius of the circle
Given that the wire diameter is 1.63 mm, we can find the radius by dividing it by 2:
r = 1.63 mm / 2 = 0.815 mm = 0.0815 cm
Now, we can calculate the area:
A = \(π(0.0815 cm)^{2}\) = 0.0209 \(cm^{2}\)
Next, we can rearrange the equation to solve for v:
v = I / (nAq)
Given that the current is 20 A and the electron density is 8.47 x \(10^{24}\)electrons per \(cm^{3}\), we can substitute these values into the equation:
v = 20 A / (8.47 x \(10^{24}\) electrons per cm^3 * 0.0209 cm^2 * 1.6 x \(10^{-19}\) C)
Simplifying the expression:
v = 1.19 x \(10^{-3}\) cm/s
Therefore, the average drift speed of electrons in the 14 gauge wire carrying a maximum current of 20 A is approximately 1.19 x \(10^{-3}\) cm/s.
(B) To calculate the time it would take for an electron to travel a distance of 8.84 m, we can use the formula:
t = d / v
Where:
t is the time in seconds
d is the distance in meters
v is the average drift velocity of electrons in meters per second
Given that the distance is 8.84 m and the average drift velocity is 1.19 x 10^-3 cm/s, we need to convert the velocity to meters per second:
v = 1.19 x \(10^{-3}\) cm/s * 0.01 m/cm = 1.19 x \(10^{-5}\) m/s
Now, we can substitute the values into the formula:
t = 8.84 m / 1.19 x \(10^{-5}\)m/s
Simplifying the expression:
t = 7.43 x \(10^{5}\)s
Therefore, it would take approximately 7.43 x \(10^{5}\) seconds for an electron to travel a distance of 8.84 m.
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A light wave with a long wavelength has _____ energy.
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55 j of heat energy are transferred to an ideal gas and the gas does 40 j of work. what is the change in thermal energy, in joules?
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The change in thermal energy for the ideal gas is 15 Joules.
The explanation for this is that when 55 Joules of heat energy are transferred to the gas and it does 40 Joules of work, the remaining energy contributes to the change in thermal energy.
By subtracting the work done (40 J) from the heat energy transferred (55 J), we find the change in thermal energy to be 15 Joules.
In summary, by subtracting the work done (40 J) from the heat energy transferred (55 J), we find the change in thermal energy to be 15 Joules.
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The potential difference is changed to 0.30V.
The current in the lamp is now 0.13 A.
The lamp is switched on for 35 s.
Calculate the energy that is transferred in this time.
Select an equation from the list of equations at the end of this paper.
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The energy that is transferred in this time is E = 1.365 J.
Equation :To calculate Charge using formula,
Q = I x t
Q = 0.13A x 35 s
Q = 4.55 C
To calculate energy transferred,
E = Q x V
where,
Q is charge
V is potential difference
So by given values,
E = 4.55 x 0.30
E = 1.365 J
Energy :In order to perform work and to produce heat and light, energy must be transferred to a body or to a physical system. Energy is a quantitative property. Energy is a conserved resource; according to the law of conservation of energy, energy can only be transformed from one form to another and cannot be created or destroyed.
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How far has a dolphin traveled in kilometers if it swims for 1.8 h at 5.6 km/h ?
Answers
Answer:
distance = 6.26342 miles
Explanation:
Recent studies show that getting some form of exercise three to five days per week can help raise good cholesterol by nearly 10%.
True
False
Answers
The given statement "getting some form of exercise three to five days per week can help raise good cholesterol by nearly 10%." is false because Regular physical activity is known to have positive effects on lipid profiles, including increasing high-density lipoprotein (HDL) cholesterol, often referred to as "good" cholesterol.
Exercise has been widely recognized as a beneficial activity for overall health, including cardiovascular health. However, stating that getting some form of exercise three to five days per week can help raise good cholesterol by nearly 10% is an oversimplification. The impact of exercise on HDL cholesterol levels can vary depending on various factors, including individual characteristics, intensity and duration of exercise, and baseline cholesterol levels.
While exercise has been associated with improvements in HDL cholesterol, the magnitude of the effect is influenced by several factors. Some studies have reported increases in HDL cholesterol levels ranging from modest to substantial, but a consistent 10% increase solely from three to five days of exercise per week is not supported by recent scientific evidence.
It's important to note that the effects of exercise on cholesterol levels can also be influenced by other lifestyle factors such as diet, genetics, and overall health status. Therefore, individuals should adopt a comprehensive approach to improve their lipid profile, incorporating regular exercise along with a balanced diet and other healthy lifestyle choices.
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which is not one of the ways that codes of ethics can vary from each other?
a. authorship
b. level
c. principle
d. purpose
Answers
One of the ways in which code of ethics does not vary from each other is ; ( C ) Principle
What is code of ethics ?Code of ethics is a set of written principles that serves as a guideline to ethical behaviors expected from individuals under some form of authority usually at the place of work.
Code of ethics is different from code conduct because code of conduct is a set of rules that oultines the proper practices of individuals at the place of work. The code of ethics vary in autorship, level and purpose.
Hence we can conclude that One of the ways in which code of ethics does not vary from each other is ; ( C ) Principle
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Calculate the orbital period of a satellite circling the Earth at an altitude of 3500 km. Answer to the nearest minute. Show your work.
Answers
The orbital period of the satellite circling the Earth at an altitude of 3500 km is 163 minutes
How do i determine the orbital period?The orbital period for the satellite circling the Earth at an altitude of 3500 km can be obtained as follow:
Altitude = 3500 kmRadius of earth = 6400 KmSemi-major axis (a) = Radius + Altitude = 6400 + 3500 = 9900 Km = 9900 × 1000 = 9900000 mGravitational constant (G) = 6.67×10¯¹¹ Nm²/Kg²Mass of earth (M) = 5.987×10²⁴ KgOrbital period (T) = ?T² = (4π² / GM) × a³
T² = [(4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)] × 9900000³
Take the square root of both sides
T = √[((4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)) × 9900000³]
T = 9789.15 s
Divide by 60 to express in minutes
T = 9789.15 / 60
T = 163 minutes
Thus, we can conclude that the orbital period of the satellite is 163 minutes
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A wave has a frequency of 450 hz and a wavelength of 4 meters. At what velocity will this wave travel?.
Answers
Answer:-00=;op
Explanation:poop
Answer:
450 hz X 4 = 1800
Explanation: Speed =
Wavelength (4) X frequency (450)
Im not 100% sure though
Air passes over the top of an airplane
wing at 170 m/s, and over the bottom
at 130 m/s. What is the difference in
pressure between the top and
bottom of the wing?
Answers
Answer:
The difference in airspeed over the top and bottom of an airplane wing results in a difference in air pressure, which generates lift. The Bernoulli's equation relates the pressure of a fluid (including air) to its velocity and the height of the fluid:
P + 1/2 * rho * v^2 + rho * g * h = constant
where P is the pressure of the fluid, rho is the density of the fluid, v is the velocity of the fluid, g is the acceleration due to gravity, and h is the height of the fluid.
Assuming that the density of air is constant and the height of the wing is negligible compared to the other terms in the equation, we can simplify the equation to:
P + 1/2 * rho * v^2 = constant
The constant in the equation is the same at all points along the wing, since the air is a continuous fluid.
The pressure difference between the top and bottom of the wing can be found by calculating the pressure at the top and bottom of the wing using the simplified Bernoulli's equation, and then taking the difference between the two pressures.
Let P1 be the pressure at the bottom of the wing, where the airspeed is 130 m/s, and P2 be the pressure at the top of the wing, where the airspeed is 170 m/s. Then we have:
P1 + 1/2 * rho * (130 m/s)^2 = P2 + 1/2 * rho * (170 m/s)^2
Simplifying and rearranging, we get:
P1 - P2 = 1/2 * rho * (170 m/s)^2 - 1/2 * rho * (130 m/s)^2
Plugging in the density of air (rho = 1.225 kg/m^3), we get:
P1 - P2 = 1/2 * 1.225 kg/m^3 * (170 m/s)^2 - 1/2 * 1.225 kg/m^3 * (130 m/s)^2
Simplifying and calculating, we get:
P1 - P2 = 377.72 Pa
Therefore, the difference in pressure between the top and bottom of the wing is approximately 377.72 Pa.
a ball of 5 kg is moving towards the wall at 6 m/s. after a while, it hits the wall and rebounds back at 4 m/s in the opposite direction. what is the work done on it?
Answers
Answer:-50 J
Explanation:
Answer: -50 N
Explanation: