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A man stands vertically in front of a mirror. His eyes are 2.5 m above the floor, and the top of his head is 0.15 m higher. He wishes to know the height above the floor of the top and bottom of the smallest mirror in which he can see both the top of his head and his feet. What is the height above the floor of the bottom of the mirror?
The answer is 1.25 m, I want to know how to get the answer.
A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. What is the total energy of the system
A ball with a horizontal speed of 1.9m/s rolls off a bench 3.8m high. How long will the ball take to reach the floor
A baseball player hits the ball and it lands in the field seat 10 m above the point, find the c and y components of the initial velocity vector of the baseball
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 21.0 m/s. Compute with what speed and angle of impact does the stone land
A cannon is placed on the edge of a cliff that is 300 m tall. The barrel of the cannon is parallel to the ground below. If a cannonball leaves the barrel in a horizontal direction with a velocity of 115 m/sec how far out from the base of the cliff..
The distance between two successive maxima of a transverse wave is 1.20m. Eight crests, or maxima, pass a given point along the direction of travel every 12.0s. calculate the wave speed.
A uniform, thin, solid door has height 2.40 m, width 0.900 m, and mass 22.5 kg. Find its moment of inertia for rotation on its hinges
a parallel plate capacitor is immersed in sea water. find the ratio of rms conduction current to rms displacement
A certain wire stretches 0.980 cm when an outward force of magnitude F is applied to each end. The same force is applied to a wire of the similar material however with tree times the diameter and with three times the length. By how much will the seco..
An underwater diver sees the sun 58 above horizontal. How high is the sun above horizon to a fisherman in a boat above the diver.
q1. chromium is produced by reacting its oxide with aluminium. if 354 g of cr2o3 and 158 g of al react to form 204 g of
A pail of water is rotated in a vertical circle of radius 1.00 m (the approximate length of a person arm). What must be the minimum speed of the pail
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