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A solid, uniform disk of radius 0.250 m and mass 47.9 kg rolls down a ramp of length 4.00 m that makes an angle of 13° with the horizontal. The disk starts from rest from the top of the ramp.
(a) Find the speed of the disk's center of mass when it reaches the bottom of the ramp.
_______m/s
(b) Find the angular speed of the disk at the bottom of the ramp.
________rad/s
Light of wavelength 619 nm is incident normally on a diffraction grating. Two adjacent maxima occur at angles given by sin ? = 0.20 and sin ? = 0.32. The fourth-order maxima are missing, What is the separation between adjacent slits
A 0.21-kg pinecone falls 10 m to the ground, where it lands with a speed of 12 m/s. How much work was done on the pine cone by air resistance
As a positron moves through a region of space, its speed increases from 2.80 X10^6 m/s to 8.00 X10^6 m/s. The electric force is the only force acting on the positron. Across what potential difference did the positron travel?
Compute the mean and maximum velocities for a liquid with a flow rate of 20 L/min in a 1.5-in nominal diameter sanitary pipeline
A child attempts to drink water by a 100 long straw but finds that water rises only 75 .By how much has the child reduced the pressure in her mouth below atmospheric pressure.
A parachutist with a camera, both descending at a velocity of 12 m/s, releases that camera at an altitude of 120 m.
A bag of cement of weight 375 N hangs from three wires as suggested in Figure P5.18. Two of the wires make angles θ1 = 55.0° and θ2 = 25.0° with the horizontal. If the system is in equilibrium, find out the tensions in the wires.
A proton is released from rest at the positive plate of a parallel-plate capacitor, What will be the proton's final speed if the experiment is repeated with double the amount of charge in each capacitor plate
A grating has exactly 8000 lines uniformly spaced over 2.58 cm, What is the expected angle for the third-order maximum of the green line
When high-energy charged particles move through a transparent medium with a speed greater than the speed of light in that medium, Calculate the speed of the electrons in the water. The speed of light in water is 2.25 108 m/s
At t = 0, an automobile travelling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.70 m until, at t = 1.60s, it is travelling east. The car does not alter its speed all through the turn.
The length of the road up the hill is 347 m. Illustrate what should be the magnitude of F, so that the net work done by all the forces acting on the car is 182 kJ?
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