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Two solid spheres simultaneously start rolling( from rest) downan incline. One sphere has twice the radius and twice the mass ofthe other.
a) Which reaches the bottom of the incline first?
b) Which has the greater speed there?
c) Which has the greater total kineticenergy at the bottom?
An airplane black box contains a bunch of unknown resistances and sources of emfs connected in unknown way such that (1) a 9 Ohm resistor across the terminals of the circuit box draws 0.80 A, and (2) an 17 Ohm resistor draws 0.50 A. What resistance w..
a wire of nichrome a nickel-chromium-iron alloy commonly used in heating elements is 1.5 m long and 1.8 mm2 in
An object has a velocity 0(t) = (3.00 m/s) + (1.00 m/s) at time t = 0.00 s. The acceleration of the object is (t) = (2.00 m/s3)t + (1.00 m/s4)t2 . If the object is located at 0(t) = (1.00 m) + (-1.00 m) at time t = 0.00 s.
A 134g baseball moving 28.6 m/s strikes a stationary 5.20 kg brick resting on small rollers so it moves without significant friction. Find the total kinetic energy before the collision
question1a hiker makes four straight-line walks a 20 km at 274o b 12km at 48onbspc 33 km at 150onbspd 30km at 20onbspin
what is the shortest height a plane mirror must be so that a person 1.60 meters tall is able to see his or her whole body.
A 11.7 cm radius thin ring carries a uniformly distributed 15.4μc charge. A small 8.6g sphere with a charge of 1.5μc isplaced exactly at the center of the ring and given a very smallpush so it moves along the ring axis (+x axis)
Light of wavelength 420 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33, What is the wavelength of the light in the water
The Earth can be approximated as a sphere of uniform density, rotating on its axis once a day. What is the moment of inertia of the Earth
Suppose you are standing at the bottom of a swimming pool looking up at the surface, which we assume to be calm. Looking up, you will see a circular window to the "outer world." If your eyes are approximately1.6meters beneath the surface, what is ..
A 350 g piece of metal at 100C is dropped into a 100 g aluminum cup containing 500 g of water at 15C. What is the specific heat of the metal
A 4kg duck sitting on a pole 20 m tall is struck by a 20 g bullet moving horizontally at 200 m/s. How far from the base of the pole does the duck strike the ground
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