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A rock is thrown horizontally with a speed of 18 m/s from a vertical cliff of height 27 m. What is the velocity (magnitude and direction counterclockwise from the +x-axis, which is the initial horizontal direction in which the rock was thrown) of the rock just before it hits the ground? Find the direction?
A hockey puck is given an initial speed of 5.0m/s. The coefficient of Kinetic friction between the puck and the ice is 0.05. Use the law of Conservation of Energy to find how far the puck slides before coming to a stop
A 0.15g honeybee acquires a charge of 21pCwhile flying, What is the ratio of the electric force on the bee tot he bee's weight and What electric field strength and direction would allow the bee to hang suspended in the air
An object 1,75 cm high is placed 36 cm in front of a concave mirror of focal length 12 cm. Calculate the image distance and image hight mathematically; state if the image is real or virtual and include a ray diagram in your answer.
A positively charged oil drop is injected into a region of uniformelectric field between two oppositely charged, horizontallyoriented plates spaced 16 cm apart.
q1. diffraction also occurs with sound waves. consider 1900-hz sound waves diffracted by a door that is 87 cm wide.
At time t = 0, a ball is struck at ground level and sent over level ground. At what initial angle above the horizontal is the ball launched
A circular coil of wire with 47 turns and a radius of 38.1 cm is laying flat on a horizontal table. obtain the magnitude of the magnetic flux through the coil
An electron, traveling at a speed of 6.10 × 107 m/s, strikes the target of an X-ray tube. What is the wavelength of the photon
a parallel-plate capacitor is made from two aluminum-foil sheets each 5.7 cm wide and 5.6 m long. between the sheets is
Electrons are emitted when a metal is illuminated by light with a wavelength less than 381nm but for no greater wavelength. What is the metal's work function?
A high energy photon is scattered at an angle of ?=180.0° from an electron that is initially at rest. Find the energy of the incident X-ray photon
A 23.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 33.0° with the vertical, find the child's speed at the lowest position
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