Answer:
acceleration a = 1.04 m/s2
Explanation:
Assume the train has a speed of 23m/s when the last car passes the railway workers. Once this happens the last car would have traveled a total distance of the 180m distance between the railway worker standing 180 m from where the front of the train started plus the 75m distance from the first car to the last car:
s = 75 + 180 = 255 m
We can use the following equation of motion to find out the distance traveled by the car:
where v = 23 m/s is the velocity of the car when it passes the worker, = 0m/s is the initial velocity of the car when it starts, a m/s2 is the acceleration, which we are looking for.
Explanation:
where is the centripetal acceleration of an object, and is the radius in which the object moves in a circle.
(hope this helps)
Answer:C. The direction of the electric current changes.
Answer:
No
Explanation:
The period of a pendulum is given by
where
L is the length of the pendulum
g is the acceleration due to gravity
We see that the period of the pendulum depends on the value of g. However, the value of the gravitational acceleration is different at different locations on Earth. In particular, at the top of the mountain the value of g is slightly lower than the value of g at the base of the mountain; in fact, g is given by
where
G is the gravitational constant
M is the Earth's mass
r is the distance from the Earth's center
so since r is greater at the top of the mountain, g is lower, and therefore the period of the pendulum will be slightly longer.
Answer:This is an explanation
for 150 km its all ik i tried hard ty
Explanation:The car covers 150 km in 3 hours or 3*60 = 180 minutes.
So in 12 min the car will cover (12/180)*150 = 10 km.