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A woman stands on a scale in a moving elevator. Her mass is 55.0 kg, and the combined mass of the elevator and scale is an additional 755 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9740 N. What does the scale read (in N) during the acceleration?
A circle of rope of total mass 1kg and radius 1m is spinning at angular velocity 2.5 rad/sec about an axis through the center of the circle
As a tennis ball is struck, it departs from the racket horizontally with a speed of 27.3 m/s. How far above the court is the tennis ball
A 1.30 m long ramp is inclined at 14 degrees to the horizontal. A solid ball is released from rest at the top of the ramp. Find the ball's speed at the bottom of the ramp
if turns ratio of primary to secondary coil of transformer is 1:3 and voltage on primary coil is 10 volts. what is voltage of seconday coil
After a 0.805 nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.32E+6 m/s. find the Compton shift in the photon's wavelength
A disoriented physics professor drives a distance 3.25km north, then a distance 3.65km west, Find the direction of the resultant displacement, using the method of components
An air spaced parallel plate capacitor has an initial charge of 0.05 uC after being connected to a 10 V battery. Calculate the work done in pulling the plates apart
what happens to light of a particular frequency when it is incident upon the material that natural frequency is the same as the frequency of the light.
boy goes to market with a average speed of 29 km/h.He returns back half the way he went with a average speed of 40 km/h. Find average speed for whole journey.
A diverging lens with f = -31.5 cm is placed 11 cm behind a converging lens with f = 24 cm. Where will an object at infinity be focused
A mass of .5Kg is attached to a massless spring with spring constant k=600N/m, What was the incident speed of the second mass
The refractive index of a material is 2.58. What is the critical angle for a light ray
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