3 years ago

With the crate stationary on a horizontal ramp, the force of static friction is:_________

Physics

1 answer:

padilas [110]3 years ago

6 0

Answer:

Zero

Explanation:

As it is stationary, it implies a non moving force, on top of the fact that the ramp is horizontal, the force of static friction has to be zero.

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The specific heat of a certain type of metal is 0.128 J/(g⋅∘C).0.128 J/(g⋅∘C). What is the final temperature if 305 J305 J of he

Makovka662 [10]

Answer:

45.3°C

Explanation:

Heat gained = mass × specific heat × increase in temperature

q = mC (T − T₀)

Given C = 0.128 J/g/°C, m = 94.0 g, q = 305 J, and T₀ = 20.0°C:

305 J = (94.0 g) (0.128 J/g/°C) (T − 20.0°C)

T = 45.3°C

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3 years ago

a container of water is knocked off a 10.0 meter high ledge with a horizontal velocity of 1.00 meters/second. calculate the time

Evgen [1.6K]

Answer:

1.43 s

Explanation:

The time it takes for the container to reach the ground is determined only by the vertical motion of the container, which is a free-fall motion, so a uniformly accelerated motion with a constant acceleration of g=9.8 m/s^2 towards the ground.

The vertical distance covered by an object in free fall is given by

$S=ut + \frac{1}{2}at^2$

where

u = 0 is the initial vertical speed

t is the time

a= g = 9.8 m/s^2 is the acceleration

since u=0, it can be rewritten as

$S=\frac{1}{2}gt^2$

And substituting S=10.0 m, we can solve for t, to find the duration of the fall:

$t=\sqrt{\frac{2S}{g}}=\sqrt{\frac{2(10.0 m)}{9.8 m/s^2}}=1.43 s$

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3 years ago

What area of science compares and describes quantities and movements of matter and energy?

qaws [65]

Answer:

the answer is physics

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3 years ago

A car engine burns fuel and has moving parts. Sometimes, an engine can become too hot and overheat. What can prevent the engine

arsen [322]

there many things you could do, one is try getting a cooling system, another thing is its extramly hot and you may need to tunr off your car to prevent the engine from over heating.

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3 years ago

Read 2 more answers

URGENTTT PLEASE HELP

mel-nik [20]

This doesn’t make any sense

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2 years ago