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galina1969 [7]
3 years ago
8

5. Which of the following is velocity? *

Physics
1 answer:
ivann1987 [24]3 years ago
3 0
A. 20m/s because the unit for velocity is m/s
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True or False? Materials that are good conductors of heat are usually poor conductors of electricity.
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False

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An object is at rest in front of a compressed spring. It travels over a surface that exerts a kinetic frictional force on it and
PolarNik [594]

Answer:

the object will travel 0.66 meters before to stop.

Explanation:

Using the energy conservation theorem:

E_i+K_i+W_f=K_f+U_f

The work done by the friction force is given by:

W_f=F_f*d\\W_f=\µ*m*g*d\\W_f=0.35*4*9.81*d\\W_f=13.7d[J]

so:

\frac{1}{2}1800*(10*10^{-2})+0-13.7d=0+0\\d=0.66m

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True or false. when objects collide , some momentum is lost
ycow [4]

Answer:

It is neither false nor true. When they collide some of one of the objects goes to the other object.

Explanation:

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2 years ago
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A caterpillar climbs up a one-meter a wall. For every 2 cm it climbs up, it slides down 1 cm. It takes 10 minutes for the
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2 years ago
Solve for A if F=MA and F=100 and M=25?
inn [45]

Answer:

<h3>\boxed{ \boxed{ \bold{A = 4}}}</h3>

Explanation:

Given,

F = 100 , M = 25

Now, let's find the value of A

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Swap the sides of the equation

⇒\sf{25A = 100}

Divide both sides of the equation by 25

⇒\sf{ \frac{25A}{25}  =  \frac{100}{25} }

Calculate

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Best regards!!

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