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A rifle with a weight of 40 N fires a 4.5-g bullet with a speed of 230 m/s.
(a) Find the recoil speed of the rifle.
(b) If a 800-N man holds the rifle firmly against his shoulder, find the recoil speed of the man and rifle.
a man is trying to get his car out of mud on the shoulder of a road. He ties one end of a rope tightly around the front bumper , What is the magnitude of the force on the car from the rope
An RLC series circuit has a resistance of R = 334 %u03A9, an inductance L = 0.270 mH, what is the maximum source voltage amplitude when the circuit is operated at the resonant frequency
At t = 0 a grinding wheel has an angular velocity of 21.00 rad/s. It has a constant angular acceleration of 21 rad/s^2 until a circuit breaker trips at 2.40s. From then on it turns during 344 rad as it coasts to a stop at constant acceleration.
Computer hard drives are made of aluminum platters coated with a layer of magnetic material. How many such domains must a hard drive of 3 TB have (1 Byte = 8 bits)
The electric field of a sinusoidal electromagnetic wave obeys the equation E=(375V/m)cos[(1.99×107rad/m)x+(5.97×1015rad/s)t]. What is the amplitude of the magnetic field of this wave
Two compact sources of sound oscillate in phase with a frequency of 90 Hz where the speed of sound is 340 m/s. What is the amplitude of the resultant wave at that point
A particle with a charge of -60.0 nC is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm and outer radius 24.0 cm, Calculate the speed of the proton
The rectangular gate CD shown in the figure is 1.8 m wide and 2 long. Assuming the material of the gate to be homogeneous and neglecting friction at the hinge C, determine weight of the gate necessary to keep it shut until the water level rises to..
three uniform thin rods, each of length L = 39 cm, form an inverted U. The vertical rods each have a mass of 15 g; the horizontal rod has a mass of 32 g. Elucidate what are (a) the x coordinate and (b) the y coordinate of the system's center of ma..
q1. a 0.50-kg object is attached to an ideal massless spring of spring constant 20 nm along a horizontal frictionless
A 1.0-kg block of ice is initially at 0°C. Heat is added to this system, and the entropy is increased by 357.1 J/K. How much of the ice melts
The velocity vs. time curve of an object is an increasing straight line. What is the acceleration of the object
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