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blsea [12.9K]
3 years ago
7

A car is uniformly accelerated at the rate of 2 m/sec2 for 12 seconds. If the original speed of the car is 36 m/sec what is the

final speed
Physics
1 answer:
JulsSmile [24]3 years ago
4 0

Frame of reference, in simplest terms, describes the state of motion of the observer. The frame of reference may also be described by using a set of coordinates, time and motion. We formulate all our equations and solve them using the frame of reference.

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8 0
2 years ago
An object is hung on the end of a vertical spring and is released from rest with the spring 3 unstressed. If the object falls 3.
den301095 [7]

Answer:

The period of the resulting oscillatory motion is 0.20 s.

Explanation:

Given that,

Spring constant k= 3\ N/m^2

We need to calculate the time period

The object is at rest and has no elastic potential but it does has gravitational potential.

If the object falls then the the gravitational potential change in to the elastic potential.

So,

mgh=\dfrac{1}{2}kh^2

m=\dfrac{1}{2}\times\dfrac{kh}{g}

Where,h = distance

k = spring constant

Put the value into the formula

m=\dfrac{1\times3\times3.42\times10^{-2}}{2\times9.8}

m=5.235\times10^{-3}\ kg

Using formula of time period

T=\dfrac{1}{2\pi}\times\sqrt{\dfrac{m}{k}}

Put the value into the formula

T=\dfrac{1}{2\pi}\times\sqrt{\dfrac{5.235\times10^{-2}}{3}}

T=0.20\ sec

Hence, The period of the resulting oscillatory motion is 0.20 s.

8 0
3 years ago
A coil of 1000 turns of wire has a radius of 12 cm and carries a counterclockwise current of 15A. If it is lying flat on the gro
grin007 [14]

Answer:

torque is 1.7 * 10^{-2} Nm

Explanation:

Given data

turns n = 1000 turns

radius r  = 12 cm

current I = 15A

magnitude B = 5.8 x 10^-5 T

angle θ = 25°

to find out

the torque on the loop

solution

we know that torque on the loop is

torque = N* I* A*B* sinθ

here area A = πr² = π(0.12)²

put all value

torque = N* I* A*B* sinθ

torque = 1000* 15* π(0.12)² *5.8 x 10-5 * sin25

torque = 0.0166 N m

torque is 1.7 * 10^{-2} Nm

5 0
3 years ago
PLEASE HELP THIS TEST IS DUE IN TEN MINS
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Answer:

A. A statement of how the volume of a gas is related to its temperature.

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Two children sit on different sides of a seesaw. The first child of mass 27 kg sits 1.5 m from the center. How far must the seco
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