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A 55.0 m wire carries a current of 2.25 A in a location where Earth’s
magnetic field is 4.5 x 10^-3 T. The wire experiences a force of 0.15 N. Find
the angle between the wire and the magnetic field.
starting from rest, a train is uniformly accelerated and reaches a velocity of 20km/h after 15cesconds. what is its acceleration
A student who is standing 0.5 meters from a plane mirror moves at a velocity of 0.75
meters per second for 3 seconds away from the mirror. How much further is the student
from her image than when she first started moving?
A 75 kg man is riding an escalator in a shopping mall.The escalator moves the man at a constant velocity from ground floor level to the floor above,a vertical height of 4.60m.What is work done by a,the gravitational force and b,by the escalator
an oscillating body takes 0.8 seconds to complete four cycles. What is the period, frequency, and angular frequency of the body
The Bob of a simple pendulum oscillates with an amplitude of 20 cm. If the acceleration of the Bob is - 4y, where y is the displacement, calculate the
(I) magnitude of its maximum acceleration.
(II) period of the motion
(III) magnitude of the maximum velocity
A 480g sample of thallium-208 has a half-life of 3.053 minutes.What fraction of the parent material will remain after 12.212 minutes?
A foam cup is filled with a hot water and allowed to cool while being stirred by a paddlewheel.
initially, the water has an internal energy of 200kj,and while cooling it loses 150kj of heat.
the paddlewheel does 25kj of work on water
a) calculate the change in internal energy of water
b) calculate the final internal energy of water
Normalize wave function psi where psi(x) = {e^-ax for x>0 e^ax for x<0
A circuit has a resistor with a resistance of 3Ω followed by three parallel branches, each holding a resistor with a resistance of 5Ω. What is the total equivalent resitance of the
circuit?
