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A mass M of 2.71 kg is attached to the end of a string whose length is 0.640 m. The mass slides without friction on a horizontal surface. If the string can withstand a maximum tension of 77.1 N, what is the maximum tangential speed the ball can have before the string breaks?
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 79.2 m/s at ground level. What is its velocity just before it hits the ground
Why should the voltmeter and ammeter be read simultaneously to decide the resistance of a circuit component? A radio with a resistance of 40 ohm and a clock with a resistance of 20 ohm are connected in series on a 120V line. What is the current? Wha..
Sound with a frequency 730 Hz from a distant source passes through a doorway 1.05 m wide in a sound-absorbing wall. Find the number of the diffraction minima at listening positions along a line parallel to the wall
A box of bananas weighing 44.0N rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.500, and the coefficient of kinetic friction is 0.300.
A spaceship requirements to change its course therefore that the magnitude of its momentum p remains the same but the direction changes by the angle α. determine what should be the minimum time
A spring of negligible mass stretches 3.00 cm from its relaxed length when a force of 7.70 N is applied. A 0.490-kg particle rests on a frictionless horizontal surface, What is the amplitude of the motion
A 7430-kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. Find the work done by the gravitational force
A μ (moun) moving by us at 0.60c is observed to decay into an electron and two neutrinos. The electron is given off in the forward direction. Its velocity with respect to the lab is 0.99 c. what is its velocity by respect to the muon?
a 520 w carnot engine operates between constant-temperature reservoirs at 109degc and 67degc.a what is the rate at
Two cannonballs, C and D, are fired from the ground with identical initial speeds, but (theta)a larger than (theta)b. Determine which cannonball reaches a higher elevation
in meters what is the distance of closest approach of the two particles? assume that the gold nucleus remains
Three 14.05-g Styrofoam balls of radius 2 cm are coated with carbon black to create them conducting and then are tied to 1.23-m-long threads and suspended freely from a common point.
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