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Starting from rest at t = 0 s, a wheel undergoes a constant angular acceleration. When t = 1.7 s, the angular velocity of the wheel is 6.2 rad/s. The acceleration continues until t = 16 s, when the acceleration suddenly changes to 0rad/s2. During what angle does the wheel rotate in the interval t = 0 s to t = 41 s?
A 3.7 kg block of copper at a temperature of 86°C is dropped into a bucket containing a mixture of ice and water whose total mass is 1.2 kg. How much ice was in the bucket before the copper block was placed in it
The gravitational acceleration on the Moon is a sixth of that on Earth. The weight of an apple is 1.03 N on Earth. What is the mass of the apple
Suppose a capacitor in a video camera has a capacitance of 26.0 ?F, how much potential energy is stored in the capacitor
You place 73 moles of hydrogen gas in a balloon of volume 2.6 m3, and find the pressure to be 1.4 times atmospheric pressure. What is the typical speed of a hydrogen molecule?
In a cloud chamber experiment, a proton enters a uniform 0.250 T magnetic field directed perpendicular to its motion. How fast was the proton moving
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.22m. The mugslides off the counter and strikes the floor 1.40m from the base ofthe counter.
The owner of a van installs a rear-window lens that has a focal length of -0.330 m. When the owner looks out during the lens at an object located directly behind the van, the object appears to be0.250 m from the back of the van, and appears to be 0.3..
An Automobile engine slows down from 4500 rpm to 1200 rpm in 2.50 s. Calculate (a) its angular acceleration, assumed constant and (b) total number of revolutions the engine makes in this time.
Find the critical angle of incidence for a ray of light going from a diamond to air
A cubical box is 0.185 meter on an edge. This box is floating in a lake with 1/5 of its height beneath the surface. Compute the depth of the water in the box at the instant the box begins to sink
two identical metal spheres a and b are connected by a metal rod. both are initially neutral. 1.6times1012 electrons
find the fraction of all the arrows you shoot that land outside a circle of some radius r0 as a function of r0. repeat
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