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A light ray reflects from a mirror hanging vertically on a wall in your bathroom, and the ray strikes a particular point on the opposite wall (see figure below). The bottom end of the mirror is then tilted slightly away from the wall so that the mirror makes an angle of 4° with the wall. The spot where the reflected beam hits is found to move upward a distance of 0.65 m. What is the length L of the room?
What is the magnitude of buoyancy force ?
At what distance along the central axis of a uniformly chargedplastic disk of radius R = 1.40 m is themagnitude of the electric field equal to 1/9 times the magnitude of the field at the center of the surface of the disk?
A 5.95kg object is thrown 18.10m/s at a 30.00° angle andcollides head-on at its peak with a 14.5kg object fired at28.0° which is also at its peak. At what velocity was the14.5kg object fired
a force of 40.0 n is applied to a crate to displace it by 50.0 m. how much work is done on the crate by this
A 115.29 g ice cube at -11°C is placed in an aluminum cup whose initial temperature is 79°C. What is the mass of the cup
An object gets a variable acceleration (in m/s2) that changes with time according to the equation: a(t)= 5.0-1.4t 0
Jamal pulls a 200N sled up a 28° slope at a constant speed by a force of 100N. Near the top of the hill he releases the sled, With what acceleration does the sled go down the slope
If a simple pendulum with length 1.3 m makes 88oscillations in 180 s, what is the acceleration of gravity at its location
Attempting to stop on a slippery road, a car moving at 80 skids across road at a 30 angle to its initial motion, coming to a stop in 3.8.
A 27.0 gram object moving to the right at 18.0 cm/s overtakes and collides elastically with a 10.0 gram object moving in the same direction at 15.0 cm/s. Evaluate the velocity of each object after the collision
The displacement of a harmonic oscillator is given by y =8.6 sin(14t), Determine what is its maximum velocity
The index of refraction for red light in water is 1.331 and that for blue light is 1.340. A ray of white light enters the water at an angle of incidence of 80.4°. What is the underwater angle of refraction for the red component of the light?
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