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A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 28.0 m. She pushes in a direction 23.0° below the horizontal. A 38.0-N frictional force opposes the motion of the cart.
(a) What is the magnitude of the force that the shopper exerts?
(b) Determine the work done by the pushing force.
(c) Determine the work done by the frictional force.
(d) Determine the work done by the gravitational force.
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
A grinding wheel in the shape of a solid disk is 0.200m in diameter and has a mass of 2.50kg. How far would it have to drop in free fall to acquire the same amount of kinetic energy
A Cepheid variable has been found to have a period of 22 days, from this its luminosity is determined to be 2.8 x 1029 W, calculate the distance to the Cepheid
A rifle with a barrel length of 59 cm fires a 8 g bullet with a horizontal speed of 350 m/s, What resistive force (assumed to be constant) does the wood exert on the bullet
A parallel-plate air capacitor has a capacitance of 940 pF. The charge on each plate is 2.10 µC. How much work is required to double the separation
A car crashes into a wall at 25 m/s and is brought to rest in 0.1s. Calculate the average force exerted on a 75-kg test dummy by the air bags
ltbrgt 1how does the quantum dot bind to the antibodies ie quantum dots and anti-her1 or anti-her2neu scfv antibodies
A golfer imparts a speed of 29.6 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation.
a solid metal sphere of radius a 1.30 cm is surrounded by a concentric spherical metal shell of inner radius b 3.50
An athlete rotates a 1.00-kg discus along a circular path of radius 1.04 m, Determine the magnitude of the maximum radial acceleration of the discus
The combination of an applied force and a friction force produces a constant total torque of 36.6 N · m on a wheel rotating about a fixed axis. The applied force acts for 6.20 s. During this time, the angular speed of the wheel increases from 0 to..
q1. two speakers 6.00 m apart are driven by the same audio oscillator so that each one produces a sound consisting of
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