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a greased pig is at the top of a 3m high frictionless hill moving at a speed of 5m/s. what is the pig's speed when it gets to the bottom of the hill?
A 23.2-mW laser beam of diameter 2.18 mm is reflected at normal incidence by a perfectly reflecting mirror. Calculate the radiation pressure on the mirror
A 170, 35.0 cm-diameter turntables rotate on frictionless bearings at 53.0. A 20.0 block sits at the center of turntable. A compressed spring shoots the block completely outward along a frictionless groove in the surface of the turntable.
Two blocks with masses m = 16.7 kg and M = 70.1 kg are not attached. The coefficient of static friction between the blocks is 0.45 but the surface beneath M is frictionless. What is the minimum force F required to hold m against M?
A 20-cm-radius ball is uniformly charged to 88nC, What is the ball's uniform charge density (C/m3) and What is the electric field strength at points 5, 10, and 20 cm from the center
A 40 cm diameter wheel accelerates uniformly from 240 rpm to 360 rpm in 6.5 s. how far will a point on the edge of the wheel have traveled in this time. what is the ratio of the new force to the old force.
When G was first measured by Henry Cavendish, newspapers of the time hailed his experiment as "weighing Earth experiment." And Why.
A uniform door weighs 50-N and is 1.0 m wide and 2.70m high. What is the magnitude of the torque because of the door's own weight about a horizontal axis perpendicular to the door and passing through a corner.
Describe in words the thermodynamics processes in terms of reversible and nonreversible for a Carnot Heat Engine, Fireplace
A galvanometer with a full-scale sensitivity of 700?A and a coil resistance of 58? is to be used to build an ammeter designed to read 10A at full scale
A 23.00 kg chair initially at rest on a horizontal floor requires a 364N horizontal force to set it in motion. Once the chair is in motion, a 328N horizontal force keeps it moving at a constant velocity. A 23.00 kg chair initially at rest on a horizo..
If lithium ion Li+2 is treated as a classical system of one electron of charge ?e going around a nucleus of charge 3e on a circle of radius 1.77× 10?11 m
A bat is pursuing an insect and using echolocation of 60-kHz sound waves to track the insect. find the difference in the two echo times the bat measures
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