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1. The speed of an object is known to be 3.0 X 108m/s. You measure the velocity of the object during an experiment and get a value of 2.65 X 108 m/s. Determine the percent error associated with these two values. (5 points)
The electric field has been measured to be horizontal and to the right everywhere on the closed box. All over the left side of the box E1 = 120 V/m, and all over the right, slanting, side of the box E2 = 250 V/m. On the top the average field is E3..
An electric motor with a power of 3W is used to lift a .2 kg mass a height of 0.5 meters in 3.0 seconds, since total energy must be conserved
A 43 kg girl and an 8.4 kg sled are on the frictionless ice of a frozen lake, 17 m apart but connected by a rope of negligible mass. What is the acceleration of the girl
A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direction) with respect to Earth, and one of the fragments is subsequently moving vertically with speed v, find out the velocity..
Consider a homemade capacitor, which consists of 2 8.5" x 11" aluminum foil sheets separated by 10 sheets of paper. Estimate the capacitance of this device. What effect does the paper have on the capacitance
The force vector A has a magnitude of 75.0 newtons (N) and points due east. The force vector B has a magnitude of 138 N and points 75.6 ° north of east. Find the (a) magnitude and (b) direction of A - B
14g of nitrogen gas at 0°C and 1 atm is compressed in an isochoric process to an pressure of 20 atm. How much heat is inputted into the gas
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
Two atomic clocks are carefully synchronized. One remains in New York, and the other is loaded on an airliner that travels at an average speed of 250m/s, Which clock will show the shorter elapsed time
A student (m= 75kg) falls freely from rest and strikes the ground. During the collision with ground, he comes to rest in a time of 0.040s.
The x-position of a particle is given by the expression x(t)=(4.0 m)cos(4.0?t+ 5.0?) , where x is in meters and t is in seconds. What is the maximum velocity of the particle
A barbell spins around a pivot at its center . The barbell consists of two small balls, each with mass m = 460 grams, at the ends of a very low mass rod whose length is L = 24 cm. The barbell spins with angular speed ω = 50 radians/s.
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