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The rope and two masses are suspended from the ceiling of an elevator which is accelerating downward at 2.8 m/s^2. If each of the masses is 3.7 kg, find the tension in the rope connecting the two masses.
Ultrasound used in a particular medical imager has frequency 4.8 MHz and wavelength 0.31mm . Find (a) the angular frequency, (b) the wave number, and (c) the wave speed.
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. 1-Find the volume of the cylinder. 2-Calculate the probable percent error in the length. 3-Calculate the probable percent..
A square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field. What is the flux that passes through the circular loop
A skier starts from rest at the top of a hill that is inclined at 10.5? with the horizontal. The hillside is 191 m long, and the coefficient of friction between snow and skis is 0.0677. At the bottom of the hill, the snow is level and the coef..
A proton is fired directly into a uniform electric field that is able to bring the charge momen- tarily to rest. How much work does the electric field do in stopping the proton
Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly, sphere C is touched to sphere B and separated from it. Explain how much charge ends up on sphere C?
A home-run baseball is hit with an initial speed vo=37.0 m/s at an initial angle qo=53.1o. Find the time when the ball reaches the highest point of its flight, and find its height at this point
If a 25.00 gram bullet with a speed of 290 travels 14 into a tree before stopping, what's the average force exerted to stop bullet.
question1a person doing a chin-up weighs 725 n disregarding the weight of the arms. throughout the first 20.0 cm of the
A speeder is pulling directly away and increasing his distance from a police car that is moving at 25 m/s with respect to the ground. Find the speeder's speed with respect to the ground
a projectile is fired with an initial velocity of 35 m/s at an angle of 30 degrees above horizontal of a 30 feet tall building. find (a) the max height of the projectile
An aluminum ball does not fit through a brass ring at 20oC. The diameter of the ball is 2.001 cm, At what temperature does the ball just fit through the ring
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