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Q. On an air track, a cart oscillates between the 12 cm mark and the 78 cm mark, completing 11 oscillations in 2 minutes. Find the (1) frequency, (2) period, (3) amplitude, (4) maximum speed and (5) maximum acceleration of the cart.
Q. If John Glenn weighed 640N on Earth's surface, i) how much would he have weighed if his Mercury spacecraft had (hypothetically) remained at twice distance from the center of the Earth? ii) Why is it said that an astronaut is never truly weightless?
An air molecule is moving at a velocity of 444 m/s. How various meters would the molecule move during 7.00 ms (milliseconds) if it didn't collide with any other molecules.
What are the corresponding velocity vectors
explain the energy released in the explosion. A rock stuck in the tread of a 59.0 cm diameter bicycle wheel has a tangential speed of 3.20 m/s. When the brakes are applied, the rock's tangential deceleration is 1.20 m/s^2
What is the potential difference across capacitor. How much charge is on each place.
An object with a height of 42 cm is placed 2.2 m in front of a concave mirror with a focal length of 0.45 m. Determine the location and magnification of the image produced by the mirror, using the mirror and magnification equations.
The loaded cab of an elevator has a mass of 3.6 x 10^3 kg and moves 193m up the shaft in 20s at constant speed. At what average rate does the force from the cable do work on the cab.
Estimate the current in an L-R circuit for t>T if the EMF is (12/T) t for 0
A 56.0 kg person jumps from rest off the 9.0 m high tower straight down into the water. Neglect air resistance throughout the descent. She comes to rest 3.40 m under the surface of the water. Find out the magnitude of the average force that the water..
In a certain time period a coil of wire is rotated from one orientation to another regarding a uniform 0.38-T magnetic field. The emf induced in the coil is 3.5 V. Other things being equal, what will the induced emf be if the field had a magnitude..
The elevator is firstly at rest. How far does the elevator move even as accelerating to full speed from rest.
Find out vertical and horizontal components of the pendulum
Ricardo walks 22.0 in a direction 50.0 west of north. Jane walks 20.0 in a direction 30.0 south of west. They after that stop and turn to face each other.
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