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A sprinter of mass 60.5 kg has one foot on the ground, as shown in the figure below. The force F exerted by the ground at point P is directed so that the torque about the body's center of mass is approximately zero. (Let h = 0.845 m.)
(a) Find the angle θ this force makes with the horizontal.
(b) Find the instantaneous acceleration of the center of mass, assuming that it is directed horizontally.
A student drops two metallic objects into a 120 g steel container holding 150 g of water at 25°C. What is the mass of the aluminum chunk
A typical Major League fastball is thrown at about 99 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 65.5 ft, how many full turns does the ball make between release and c..
A Carnot engine extracts 550 J of heat from a high-temperature reservoir during each cycle, compute the efficiency of the engine
How far from a 50-mm focal length lens, such as is used in many35-mm cameras, must an object be positioned if it is to form a real image magnified insize by a factor of three?
When they release their arms, Al moves off in one direction at a speed of 0.689 m/s, while Jo moves off in the opposite direction at a speed of 1.10 m/s. Assuming that friction is negligible, find out Al's mas
When responding to sound, the human eardrum vibrates about its equilibrium position. Assume an eardrum is vibrating with an amplitude of 4.8x10-7 m and a maximum speed of 3.2x10-3 m/s
For 10000 points, mean is 10 and standard deviation is about 6= Sqrt(770/21). how do they compare with the theoretical value
Two 22.0 cm focal-length converging lenses are placed 16.5 cm apart. An object is placed 35.0 cm in front of one lens. Where will the final image formed with the second lens be located?(in cm beyond the second lens)
On your wedding day you leave for the church 35.0 minutes before the ceremony is to begin, which should be plenty of time since the church is only 10.0 miles away.
A beam of 8.36 MeV protons is incident on a target of 2713Al. Those protons that collide produce the reaction shown below. determine the kinetic energy of the emerging
A tether ball moves around the pole in a horizontal circle with radius 1.5m. If the mass of the ball is 1.3 kg, what angle does the rope make with the pole
a what is the orbital angular momentum predicted by the shell model for 37cl in units of hbar?b what is the total
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