Answers
Related Questions
If 10 waves pass one dock every 16.0 seconds, determine the frequency of the wave.
Answers
The frequency of the wave is 0.625 waves per second, calculated by dividing the number of waves (10) by the time (16.0 seconds).
To determine the frequency of a wave, you need to divide the number of waves (in this case, 10) by the time it takes for those waves to pass a certain point (in this case, a dock) within 16.0 seconds.
Frequency is usually measured in Hertz (Hz), which represents the number of cycles or events per second. So, to find the frequency, we calculate 10 waves / 16.0 seconds = 0.625 waves per second or 0.625 Hz.
This means that every second, 0.625 waves pass by the dock, giving you the frequency of the wave.
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Newton's 2nd Law
1. An object with a mass of 2.0 kg accelerates 2.0 m/s2 when an unknown force
is applied to it. What is the amount of the force?
Answers
Answer:
4.0 N
Explanation:
Newton's second law of motion states that the net force acting on an object is equal to the product of its mass and acceleration. Mathematically, it can be expressed as:
F = m × a
where F is the net force, m is the mass of the object, and a is its acceleration.
In this case, we are given that the object has a mass of 2.0 kg and accelerates at a rate of 2.0 m/s^2. We can use Newton's second law to find the unknown force:
F = m × a
F = 2.0 kg × 2.0 m/s^2
F = 4.0 N
Therefore, the amount of force applied to the object is 4.0 N.
Part B
Keep track of how many hours you use the appliance in one day, and record the value below. You might want to track the
time in minutes and convert it to hours using this formula:
time in minutes = time in hours.
60
BIU X¹ X₂ 10pt
A
≡ ≡ 四
Answers
The number of kilowatts used by an individual to operate his appliances is determined as 12.1 kWh.
Average daily power consumptionThe average daily power consumption is the amount of electric energy consumed by an individual on a daily rate.
The average daily power consumption of individuals in USA is 12,100 W-hr.
Converting watts to kilowattsE = 12,100 Whr/1000
E = 12.1 kWh
Thus, the number of kilowatts used by an individual to operate his appliances is determined as 12.1 kWh.
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b. Density and relative density.
Answers
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.
The relative density of a substance is defined as the ratio of the density of that substance to the density of water at 4oC. It is also defined as the ratio of the mass of substance to the mass of equal volume of water at 4oC. i.e., R.D. = Mass of the substance / mass of an equal volume of water at 4oC
Which of the following choices is the best example of potential energy?
Answers
Answer:
A basketball sitting still in a players hands
Explanation:
The other 3 answers have the ball in motion (going towards the basket, bouncing, and rolling) so that would be kinetic energy.
When the basketball is sitting in the player's hands, it has the potential to be in motion.
Answer:
it is D not B it D
Explanation:
A guy wire 1000 feet long is attached to the top of a tower. When pulled taut it makes a 42˚ angle with the ground. How tall is the tower? How far away from the base of the tower does the wire hit the ground?
Answers
Answer:
669.1 ft and 743.1 ft
Explanation:
Given data
Lenght of wire= = 1000ft
Angle = 42˚
Applying SOH CAH TOA
1. How tall is the tower?
SOH
sine ∅= opp/hyp
sin 42= opp/1000
0.6691= Opp/1000
0.6691*1000= Opp
Opp=669.1 ft
Applying SOH CAH TOA
2.How far away from the base of the tower does the wire hit the ground?
CAH
cos ∅= adj/hyp
cos 42= adj/1000
0.7431*1000=adj
adj=743.1 ft
Objects that produces both sounds and light
Answers
What do we call the number of waves that pass by a given point in one
second?
OA. The wavelength
OB. The frequency
о C. The amplitude
о D. The period
Answers
If you clean a vacuum are you the vacuum cleaner?
Answers
for a moving object distance covered by it is always greater than or equal to the displacement of the object in a given time. explain.
Answers
☯ Distance is a scalar quantity and has only magnitude but no direction.
☯ Displacement is a vector quantity and has both magnitude and direction.
☯ Distance can only have +ve values whereas displacement can be +ve, -ve or even be zero.
Which region of electromagnetic spectrum will provide photons of the least energy
Answers
Answer:
Explanation:
Radio waves
Radio waves have photons with the lowest energies. Microwaves have a little more energy than radio waves. Infrared has still more, followed by visible, ultraviolet, X-rays and gamma rays.
Water at 200
C flows through a horizontal pipe of radius 1.0cm. If the flow velocity at the center is
0.2m/s find the pressure drop along a 4m section of the pipe due to viscosity 1.6x10-3NSM-2
Answers
The pressure drop along a 4m section of the pipe due to viscosity is 0.00653 N/m.
What is viscosity?The resistance of a fluid to deformation at a specific rate is measured by its viscosity.
Temperature of water is = 20° C.
The radius of the horizontal pipe = 1.0 cm = 0.01.
The velocity of the center is = 0.2 m/s.
The viscosity of the water = 16×10⁻³ N-s-m⁻²
Hence, the pressure drop along a 4m section of the pipe due to viscosity = fLv²/2gD
= (16 ×10⁻³ )×(4 × 0.2²)/(2 × 9.8 × 2 ×0.01) N/m
= 0.00653 N/m.
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What is the difference between classical mechanics and quantum mechanics?
Answers
Classical mechanics describes the motion of objects on a macroscopic scale, while quantum mechanics deals with the behavior of particles on a microscopic scale. Classical mechanics is deterministic, meaning that it predicts precise outcomes based on initial conditions, while quantum mechanics is probabilistic, providing probabilities of different outcomes. Classical mechanics follows the principle of causality, where every effect has a specific cause, whereas quantum mechanics introduces inherent uncertainty and wave-particle duality. Classical mechanics is well-suited for describing everyday objects, while quantum mechanics is necessary to explain the behavior of particles at the atomic and subatomic levels.
~~~Harsha~~~
classical mechanics is the branch of physics that deals with the motion of everyday objects like balls, cars, and planets.
quantum mechanics is a branch of physics that focuses on the behavior of very small particles, such as atoms and subatomic particles like electrons.
pls answer this
quick as possible
Answers
Answer:
The answer is the 4th one
Explanation:
Good luck man
Which of the following quantitative research methods should a researcher use when trying to understand the political views held by the young population of a specific area? a.) Participant observation b.) Written surveys c.) Secondary data analysis d.) Laboratory experiments
Answers
Answer:
Options B
Explanation:
The appropriate quantitative research method for understanding political views held by the young population of a specific area is written surveys (option b). Surveys allow for the collection of data from a large number of participants, and specific questions can be asked to gather data on political views.
Participant observation (option a) involves direct observation of individuals in a natural setting, which may not be practical for studying political views.
Secondary data analysis (option c) involves analyzing data that has already been collected, and may not be specific to the young population or the area of interest.
Laboratory experiments (option d) are typically used to study cause-and-effect relationships between variables, which may not be applicable to studying political views.
Therefore, the best option for understanding the political views held by the young population of a specific area is written surveys.
To understand the political views of the young population of a specific area, a researcher can use written surveys, participant observation, and secondary data analysis as quantitative research methods.
Explanation:If a researcher is trying to understand the political views held by the young population of a specific area, they should use written surveys, participant observation, and secondary data analysis as quantitative research methods.
Written surveys: This method involves distributing survey questionnaires to gather data on political opinions from a sample of the young population in the area. Participant observation: This method involves the researcher immersing themselves in the community and directly observing and interacting with individuals to understand their political views.Secondary data analysis: This method involves analyzing existing data sources, such as census records or previous surveys, to gain insights into the political views of the young population in the area.Learn more about Quantitative Research Methods here:https://brainly.com/question/33505242
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A copper wire has a mass of 29.33 mg/cm and has a length of 2.5 cm.
Find the weight of the copper wire.
Answers
A baseball strikes the catcher's glove with a horizontal velocity of 40 m/s. The mass of the baseball is 0.15 kg. The displacement of the baseball due to the deformation of the catcher's glove and the movement of the catcher's hand is 8 cm from the instant it first makes contact with the glove until it stops. a. How much kinetic energy does the baseball possess just before it strikes the glove
Answers
Answer:
the kinetic energy is 120 J
Explanation:
a. The computation of the kinetic energy before it strikes the glove is as follows:
As we know that
The Kinetic energy is
= 1 ÷ 2 × m × v^2
= 1 ÷ 2 × (0.15)(40^2)
= 120 J
Hence, the kinetic energy is 120 J
mary jogs for 15 min at 240 m/min, walks the next 10 min at 90 m/min
Answers
Answer: 4500 m
Explanation:
\(15 min. * \frac{240 m}{min.} = 3600 m\)
\(10 min. * \frac{90m }{min.} = 900 m\)
\(3600m +900m = 4500m\)
A 200 W engine generates 4000 J of energy. How long did it run for?
A. 20 s
B. 200 s
C. 0.2 s
D. 2 s
Answers
Answer:
A
Explanation:
power = energy/time
200 = energy / t
200 = 4000/t
t = 4000/200= 20 sec
I will mark brainlist if it’s a good fact.
Can someone give me a fact about space that Is NOT about how space is complete silent or about a black hole cause I already used those. I only need one more fact. And when writing the fact tell me how is that possible. And please don’t copy off the internet cause my teacher would notice. And me to.
Answers
Answer:
o Their are more stars in space than there are grains of sand on earth, and more stars are created every day, we just don't see them yet.
Explanation:
I read a lot. use any of the three facts you like. I just thought that I should let you decide which one :)
5. How much heat is generated when an
electrical coil rated 200W is used to heat a
given mass of water for 1hour
Answers
Answer:
I HOPE THIS IS CORRECT
Explanation:
Power of water =2 kw=2000w
Mass of water =200kg
difference in temperature ΔT=70−10=60oC
Concept
energy required to heat the water = energy given by water in time t=pt
energy required to increase tempeature of water by 60oC,Q=msΔT
S= specific heat =4200J/kgoC
pt=msΔT
2000×t=200×4200×60
t=25200
or t=25.2×103sec.
The quantity of heat generated is 720,000 Joules or 720 kiloJoules.
Given the following data:
Time = 1 hourPower = 200 WattsTo find the quantity of heat generated when the electrical coil is used:
Note: the quantity of heat generated is energy.
First of all, we would convert the time in hour to seconds.
Conversion:
1 hour = 3600 seconds
Mathematically, the energy of a device is given by the formula;
\(Energy = power\) × \(time\)
Substituting the values into the formula, we have;
\(Energy = 200\) × \(3600\)
Energy = 720,000 Joules or 720 kiloJoules.
Therefore, the quantity of heat generated is 720,000 Joules or 720 kiloJoules.
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A 6 newton force acts on a ball
for 5 seconds. What is the
impulse?
Answers
Answer:
Each object experiences the same force ( Newton's third law) for the same amount ... An impulse of 100-units would be required to stop the ball. ... t = m*(delta v)/F = (3 kg)*(-6 m/s) / (5 N).
A figure skater glides along a circular path of radius 3.93 m. (a) If she coasts around one half of the circle, find the magnitude of the displacement vector. (b) If she coasts around one half of the circle, find what distance she skated. (c) What is the magnitude of the displacement if she skates all the way around the circle?
Answers
The magnitude of the displacement vector refers to the length or amount of the displacement vector. Displacement is the change in position of an object. Displacement is a vector quantity, which means it has both magnitude and direction. In this question, a figure skater is gliding along a circular path of radius 3.93 m.
If she coasts around one half of the circle, we have to find the magnitude of the displacement vector. The figure skater is gliding along a circular path of radius 3.93 m. If she coasts around one half of the circle, then her final and initial position is on the same point. Therefore, the magnitude of the displacement vector is zero. Distance Skated Distance refers to the length covered by an object or an individual. In this question, the figure skater is gliding along a circular path of radius 3.93 m. If she coasts around one half of the circle, we have to find what distance she skated. The distance covered by an object or individual is determined by the formula:Distance = Circumference/2Given that the radius of the circle is 3.93 m, then:Circumference of the circle = 2πr= 2 × 3.14 × 3.93= 24.7 m.Therefore, the distance covered by the figure skater around half of the circle = 24.7 m/2 = 12.35 m. Therefore, she skated 12.35 m.Magnitude of DisplacementIf the figure skater skates all the way around the circle, then she covers the entire circumference of the circle. Therefore, the magnitude of the displacement vector is the same as the circumference of the circle, which is given as:Circumference of the circle = 2πr= 2 × 3.14 × 3.93= 24.7 mTherefore, the magnitude of the displacement vector when the figure skater skates all the way around the circle is 24.7 m.For such more question on magnitude
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pick the correct answer there are three correct answers
Answers
A 25 kg mass is hanging from two cables, each with their own tension. Cable 1 is connected to the
ceiling at a 52° angle below horizontal and cable 2 is connected perpendicular to the right wall.
The entire system is stationary.
a. Draw the FBD
b. Calculate Ty and T2.
Answers
Answer:
a. one line down one line to the right one live to the northwest from the object
b. t1=190 t2=310
Explanation:
can anyone heelp me plz plz
Answers
Answer:
the ans is D.... good luck
Physical activities teaches an individual sense of responsibility and initiative.
True Or False
Answers
Answer:
true
Explanation:
Physical fitness is a personal responsibility so I would say true
A thin rod extends from
x = 0
to
x = 15.0 cm.
It has a cross-sectional area
A = 8.00 cm2,
and its density increases uniformly in the positive x-direction from 2.50 g/cm3 at one endpoint to 19.5 g/cm3 at the other.
(a)
The density as a function of distance for the rod is given by
= B + Cx,
where B and C are constants. What are the values of B (in g/cm3) and C (in g/cm4)?
B =
g/cm3
C =
g/cm4
(b)
Finding the total mass of the rod requires integrating the density function over the entire length of the rod. The integral is written as follows.
m =
allmaterial
dv =
all x
A dx =
15.0 cm
0
(B + Cx)(8.00 cm2) dx
What is the total mass of the rod (in kg)?
kg
Answers
(a) For the density function, the value of B is 2.5 g/cm³ and the value of C is 1.3 g/cm⁴
(b) The total mass of the rod is 1470 g.
What is the density function?The density of the rod is a function of distance and it is given as;
ρ = B + Cx
where;
B and C are constantsρ = 2.5 g/cm³ + (19.5 g/cm³ ) / ( 15 cm ) x
ρ = 2.5 g/cm³ + 1.3 g/cm⁴ x
The total mass of the rod is calculated by integrating the function;
dm = ( B + Cx)(8 cm² ) dx
m = 8B + 8Cx
m = 8Bx + 8Cx² / 2
m = ( 8 x 2.5 x 15 ) + ( 8 x 1.3 x 15² ) / 2
m = 1470 g
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formula for inertia speed
Answers
Answer:
The equation of momentum for a linear system is simply P = mv where P = momentum (kg·m/sec or lb·ft/sec); m = mass (kg or lb); and v = velocity (m/s or ft/sec). ... By reducing her inertia (I = mr2 where r has been decreased) her angular velocity, ω, must increase in order for the angular momentum to remain constant.
https://www.gstatic.com/education/formulas2/355397047/en/moment_of_inertia.svg
hope this helps?
Explanation:
6. As distance increases, gravitational force *
(10 Points)
increases
decreases