Your cousin is moving into an apartment in San Francisco. This apartment is on a street that is angled at 25∘ above the horizont
al. He places a box of mass 15kg on the street. The coefficients of friction between the box and the street are μs=0.45 and μk=0.25.
A: He releases the box after he places it on the ground. Will it start to slide down the sloped road?
Yes or No?
B: As the box slides down the slope, what is its acceleration?
C: What is the magnitude of the minimum force he would have to apply to the box to keep it from sliding down the hill? Assume that he pushes parallel to the road and wants to hold it in place.
D: What is the magnitude of the minimum force he would have to apply to start pushing the box up the hill? Again assume that he pushes parallel to the road.
1 answer:
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Answer:
60,000 kgm/s
Explanation:
momentum equation,
momentum = mass × velocity.
mass = 2000kg
velocity = 30m/s
when multipled you get = 60,000 kgm/s
hope it helps. :)
Answer:
Explanation:
f
=
v
λ
where v is the velocity of the wave
λ
is the wavelength.
Answer:
<h2>1.67 m/s²</h2>
Explanation:
The car’s acceleration can be found by using the formula
where
v is the final velocity
u is the initial velocity
t is the time taken
a is the acceleration
From the question we have
We have the final answer as
<h3>1.67 m/s²</h3>
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The answer is A & B
A) The percent values were written incorrectly in the equation.
B) The amount of 7% solution should be written as 1 – x, not x – 1.
Answer:
mass of the planet and its distance from other objects
Explanation:
mass of the planet and its distance from other objects determine the strength of its gravitational force on other objects