A scientist prepares a colloidal solution and pours it into a glass tank. She then flashes a beam of white light into one end of
2 answers:
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Answer:
Battery will run for t = 90 s
Explanation:
As we know that rate of flow of charge is known as electric current
So we will have
now we have
Answer:
20.47 m/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s² = a
Total height of the fall is 29.3577 m
Height the ball reached above the building is
Time taken to reach the point from where the ball was thrown is 2.0866 s
This will also be the time it takes the ball to reach the maximum height
The initial velocity with which the rock was thrown was 20.47 m/s
Answer:
energy would become four times
Explanation:
Kinetic energy K= 0.5mv^2
⇒
now, v'= 2v
v'=
hence, speed can be doubled by four folding the energy or by decreasing mass to one fourth.