When you approach a light source, the wavelength of emitted light appears _____.a. shorter
b. the same
c. longer

Answers

Answer 1

Answer: When you approach a light source, or when the light source
approaches you, the wavelength of the light you see is shorter
than the wavelength of the light that's actually emitted by the source.

Similarly, when you approach a sound source, or when the sound
source approaches you, the wavelength of the sound you hear is
shorter than the wavelength of the sound that's actually emitted by
the source.

Answer 2

Answer:

Answer:

A. shorter

Explanation:

I just took the test.

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Sudhi is studying the motion of a toy car. she places the car in the middle of a ramp and releases it. which best describes the reference point in this scenario?

Answers

From the motion of the toy car, the reference point of this scenario is the starting position of the car.

What is reference point?

The reference point of an object is defined as the position through the measurement of an object is taken.

In studying the motion of a toy car, if she places the car in the middle of a ramp and releases it, we can conclude that the reference point of this scenario is the starting position of the car.

The starting position of the car will serve as point of reference because, the distance, speed, and time of motion of the car can be obtained with respect to the starting point.

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Thank you for posting your question here. Below are the choices that can be found elsewhere:

a. the top of the ramp
b. the bottom of the ramp
c. the ending position of the car
d. the starting position of the car

I think the answer is D which is the starting position of the car. I hope it helps.

The slope of a position vs time graph is equal to what

Answers

Since I am not sure what you are asking, I am just going to throw a bunch of information at you and hope that the answer you are seeking is present.

1) The slope is equal to the velocity at a given time. In other words, find the velocity and evaluate at it at that specific value of time.

2) Velocity = acceleration x time, assuming the acceleration is constant.

3) Velocity = area under the curve of acceleration, evaluated from the start time to the end time.

Hope this helps.

Final answer:

The slope of a position vs time graph represents the average velocity of the object. The velocity corresponds to the rate of change in the object's position over time. Further analysis reveals that the slope of a velocity vs. time graph signifies the object's acceleration.

Explanation:

In the context of physics, when analyzing a position versus time graph, the slope represents the object's average velocity. The slope is calculated as the rise over run. Rise is the change in position, or displacement, and run is the change in time. For example, Figure 3.9 shows the position (x(t)) versus time graph. The slopes of the tangent lines at specific times (0.25s, 0.5s, and 1s) indicate the object's velocity at the corresponding times. Therefore, the slope of a position vs time graph equals the velocity of the object.

Further analysis of a velocity versus time graph would then show that its slope represents the object's acceleration. This highlights the direct relationship between position, velocity, and acceleration in motion physics.

Learn more about Slope of Position vs Time Graph here:

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A child lifts a 5.0-newton toy to a height of 0.50 meters. How much work is done on the toy?

Answers

you can use the formula

Work = force x distance

therefore,

W= (5.0)(.50)
W = 2.5 joules

hope this helps :)

Work done=mgh
W=force*height
W=5N*0.50mts
W=2.5joule

You're driving down the highway late one night at 19 m/s when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the brakes is 0.50 s , and the maximum deceleration of your car is 10 m/s² . How much distance is between you and the deer when you come to a stop? What formulas do you use?

Answers

Answer:

x= x0 + v0t+ 1/2at^2

Explanation:

Sign of the charge???A glass marble is rubbed against a piece of silk. As a result the piece of fabric acquires extra electrons. What happens to the glass marble? (a)The marble has lost the same number of electrons acquired by the piece of silk. (b)The marble has acquired the same number of electrons acquired by the piece of silk. (c)The marble acquires a positive charge and repels the piece of silk. (d)The marble acquires a positive charge and attracts the piece of silk. (e)The marble acquires a negative charge and attracts the piece of silk. (f)The marble acquires a negative charge and repels the piece of silk. There may be more than one answer.

Answers

The right answer for the question that is being asked and shown above is that: "(b)The marble has acquired the same number of electrons acquired by the piece of silk; (f)The marble acquires a negative charge and repels the piece of silk."

A pendulum has 576 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom of its swing?

Answers

Ideally, 576 J because energy is conserved.
In the real world, a tiny tiny tiny tiny bit less than 576 J ,
because we live in a world with friction and air resistance.

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