Answer:
the initial speed of the object is 6.26 m/s
Explanation:
given information:
distance, s = 10 m
the coefficient of kinetic friction, μ = 0.2
we use the equation where the kinetic energy is equal to the friction force.
kinetic energy, KE =
friction work, W = F(friction) s
KE = W
= F(friction) s
where, F(friction) = μ N, N is normal force (N = m g)
= μ m g
so,
= μ m g s
= μ g s
= 2 μ g s
= 2 (0.2) (9.8) (10)
= 39.2
hence,
v =
= 6.26 m/s
Answer:
the balloon is filled with the 8.5 litre of helium. temperature is 294 kelvin.
party starts at 4 p.m.
the temperature rises 305 kelvin.
the new volume = 4 litres
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The answer is:
A vibrating tuning fork is struck and begins to vibrate as the object used to strike it is placed away from the tuning fork.</span>
Answer:
Neither end of Earth’s axis is tilted toward or away from the sun.