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A horizontal plywood disk with mass 7.40kg and diameter 1.12m pivots on frictionless bearings about a vertical axis through its center. You attach a circular model-railroad track of negligible mass and average diameter 1.07m to the disk. A 1.40-kg , battery-driven model train rests on the tracks. To demonstrate conservation of angular momentum, you switch on the train's engine. The train moves counterclockwise, soon attaining a constant speed of 0.600m/s relative to the tracks.
a. Find the magnitude and direction of the angular velocity of the disk relative to the earth.
If the distance between two slits is 0.031 mm and the distance to a screen is 2.50 m, find the spacing between the first- and second-order bright fringes for yellow light of 500 nm wavelength.
An AC generator supplies an rms voltage of 240 V at 60.0 Hz. It is connected in series with a 0.450 H inductor, a 3.90 ?F capacitor and a 316 ? resistor, What is the rms current through the resistor
You have been asked to design a "ballistic spring system" to measure the speed of bullets. Find an expression for the bullet's speed
rob and dave run a 100-m race crossing the finish line in a dead heat both taking 10.0s. they each accelerate uniformly
A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree,as well as its height, but are unable to make the measurements directly. How far away is the tree
A 0.15 kg baseball collides with a 1.0kg bat. The ball has a velocity of 40 m/s immediately prior to the collision. Estimate how fast the baseball is moving as it leaves the bat following the collision
A 0.30 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20 kg puck that is initially moving along the x axis with a velocity of 1.8 m/s. Find the fraction of kinetic energy lost in the collision
q1. two trains each having a speed of 28 kmh are headed at each other on the similar straight track. a bird that can
A 30.0kg - goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 3.50×10?2m and period 1.60s.b, What is the maximum acceleration of the finch
The temperature of 3.25 mol of an ideal diatomic gas is increased by 23.5 ?C without the pressure of the gas changing. By how much does the rotational kinetic energy of the gas increase
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 1.69 km. What is the distance they travel
After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 44.0. He finally comes to rest 22.0 below the level of the bridge. Illustrate what is the spring stiffness constant?
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