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A baseball player hits a home run and the ball lands in the left field seats, 7.6 meter above the point at which the ball was hit. The ball lands with a velocity of 49 m/s at an angle of 31 degree to the horizontal. Determine the initial velocity of the ball when the ball leaves the bat?
X-rays are scattered from a target at an angle of 78.0° with the direction of the incident beam. Find the wavelength shift of the scattered x-rays
A 2.50 x 10^-6 F capacitor is charged to 754V and a 6.80 x 10^-6 F capacitor is charged to 563V, Determine the potential difference across the second capacitor
A hydrogen atom is in the inital state ni = n, where n > 1. Find the frequency of the electron's orbital motion
The sound intensity of 1.4x10-12 J/m2s is the threshold of hearing for humans. What is the amplitude of the motion of the air molecules if the speed of sound in the air is 331 m/s and the density of air is 1.2 kg/m3?
q1. throughout a hard sneeze your eyes may shut for 0.41 s. if you are driving a car at 98 kmh during such a sneeze how
A 2.0kg mass swings at the end of a light string (length= 3.0m) Its speed at the lowest point on its circular path is 6.0m/s. what is the kinetic energy at the instant when the string makes an angle of 50 degrees by the vertical?
A speeder is pulling directly away and increasing his distance from a police car that is moving at 25 m/s with respect to the ground. Find the speeder's speed with respect to the ground
A 5.4 m-long rod of (constant diameter 4.6 mm) is made of 2.0 m of copper and the remainder of aluminum, What is the temperature at the interface between the copper and aluminum
The G string on a violin has a fundamental frequency of 196 Hz. It is 29.0 cm long and has a mass of 0.500 g. While this string is sounding, a nearby violinist effectively shortens the G string on her identical violin (by sliding her finger down t..
A 5 kilometer long multimode optical fiber has a fiber index of nf = 1.6000 and cladding index of nc =1.5455. Obtain the minimum and maximum time for light to travel through the fiber
A football is kicked straight up into the air; it hits the ground 3.8s s later, What was the greatest height reached by the ball, Assume it is kicked from ground level
A neutron in a nuclear reactor makes an elastic, head-on collision with the nucleus of a carbon atom initially at rest. find the kinetic energy of the carbon nucleus after the collision
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