Answer:
30 (kg)
Explanation:
therefore the mass of the ball is 2 so 30 (kg)
Answer:
False
Explanation:
This is because according to newtons second law which says the acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object. So take for example a net a net force in opposite direction will cause an object to slow down.
velocity vector here is not the same as acceleration vector
Answer:
Check Explanation
Explanation:
Let the speed of the drone relative to earth be u = ?
Let the speed of the drone relative to the starship be u' = 0.5c
Let the speed of the starship relative to earth be v = 0.8c
In the theory of relativity,
The 3 speeds are related thus
u = (u' + v)/[1 + (u'v/c²)]
u = (0.5c + 0.8c)[1 + ((0.8c × 0.5c)/c²)]
u = 1.3c/[1 + (0.4c²/c²)]
u = 1.3c/1.4 = 0.9286 c = 0.93 c = 93% c
Answer: a=9.8*10^-10s
b=9.8*10^-13s
c=1.7*10^-8s
d=5.57*10^-4s
Explanation:
a) given 980 ps
Expected answer is 980 * 10^-12
Therefore, 980ps = 9.8*10^-10s
b) given 980 fs
Expected answer is 980 * 10^-15
Therefore, 980fs = 9.8*10^-13s
c) given 17 ns
Expected answer is 17 * 10^-9
Therefore, 17ns = 1.7*10^-8s
d) given 577 μs
Expected answer is 577 * 10^-6
Therefore, 577μs = 5.57*10^-4s
a=9.8*10^-10s
b=9.8*10^-13s
c=1.7*10^-8s
d=5.57*10^-4s
Answer:
Ratio of length will be 
Explanation:
We have given time period of the pendulum when length is 
is 
And when length is 
time period 
We know that time period is given by
So 
----eqn 1
And 
-------eqn 2
Dividing eqn 2 by eqn 1
Squaring both side
