Explanation:
Momentum = mass × velocity
p = (65 kg) (5 m/s)
p = 325 kg m/s
Answer:
(a). 19.0 m/s
(b). 9.5m/s
Explanation:
Assuming speed of sound is 343m/s.
(a).
As the train approaches, from the the Doppler equation we have
solving for we get:
.
And as the train cuts its speed in half, the equation gives
substituting the value of we get:
or 68.6 km per hour, which is the speed of the train before slowing down.
(b).
The speed of the train after slowing down is half the previous speed; therefore,
or 34.3 km per hour.
Answer:
N/l = 104
Explanation:
Energy stored in the inductor is given by the formula
now we have
now we have
now we have
now winding density is turns per unit length
Answer:
Writing with a pencil. The pencil pushes on the paper. The paper pushes on the pencil.
Explanation:
Newton's third law.
<span>the one that work for the majority and minority party floor leaders, and non-partisan staff is: C.leadership staff
for its daily activities, party floor leaders and non-partisan staff will need some repetitive and small task that needed to be handled.
Leadershop staffs are the workers that handle those things for them</span>