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3 years ago

What happens when a force exerted on an object cause the object to move?

Physics

2 answers:

Charra [1.4K]3 years ago

5 0

Answer:

B. Kinetic energy is created

Explanation:

sergey [27]3 years ago

3 0

The answer is B kinetic energy is created

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Help!! Or I get an F!!! <br> What planet could you jump the highest?

mote1985 [20]

Answer:

Is Mercury an answer on your thing?

Explanation:

Mercury has the least amount of gravity, so therefore you can jump the highest on Mercury.

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3 years ago

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The Chevy Corvette Z06 is claimed to accelerate from a standing start to 60 miles per hour in 3 seconds. Estimate its accelerati

Vika [28.1K]

Answer:

The acceleration of Chevy Corvette is $8.94\ m/s^2$ .

Explanation:

Given that,

Initial speed of Chevy Corvette Z06, u = 0 (it starts from rest)

Final speed of Chevy Corvette Z06, v = 60 mph

1 mph = 0.44704 m/s

60 mph = 26.82 m/s

Time, t = 3 seconds

We need to find the acceleration of Chevy Corvette. The rate of change of velocity is called acceleration of an object. It is given by :

$a=\dfrac{v-u}{t}$

$a=\dfrac{v}{t}$

$a=\dfrac{26.82\ m/s}{3\ s}$

$a=8.94\ m/s^2$

So, the acceleration of Chevy Corvette is $8.94\ m/s^2$ . Hence, this is the required solution.

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4 years ago

Two train whistles, and , each have a frequency of 392 Hz. is stationary and is moving toward the right (away from ) at a speed

trasher [3.6K]

Answer:

Part a)

f = 371.1 Hz

Part b)

f = 417.7 Hz

Part c)

beat frequency = 46.6 Hz

Explanation:

Part a)

Due to doppler's Effect the frequency of the sound heard by the train which is moving away from the observer is given as

$f_1 = f_0\frac{v + v_o}{v + v_s}$

$f_1 = 392(\frac{340 + 15}{340 + 35})$

$f_1 = 371.1 Hz$

Part b)

Now from the second train which is approaching the person we can say

$f_2 = f_0\frac{v - v_o}{v - v_s}$

$f_2 = 392(\frac{340 - 15}{340 - 35})$

$f_2 = 417.7 Hz$

Part c)

As we know that beat frequency is the difference in the frequency from two sources

$f_b = f_2 - f_1$

$f_b = 417.7 - 371.1 = 46.6 Hz$

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3 years ago

A rock is thrown straight up into the air. At the

Aleonysh [2.5K]

The answer is 3.

When a ball is thrown into the air, there is no friction (there's nothing rubbing against it), so the only force acting on the ball is gravity, which aims to pull the ball back down. Since this is the only force, the answer will equal the gravity acting on the ball. Since "weight" is defined as just that (the gravity acting on something), the answer is 3, the magnitude of the rock's weight (or the force of gravity).

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4 years ago

Hey there! I need help with this question, it's about electromagnets. No absurd answers, please. I will be flagging them. Thanks

lozanna [386]

Answer: D Moreecethadev get's 5 stars, Thanks.

Explanation:

Answer is D.

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3 years ago

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