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A 5-kg collar rests on but is not attached to the spring shown. It is observed that when the collar is pushed down 180 mm or more and released, it loses contact with the spring. Determine
(a) the spring constant,
(b) the position, velocity, and acceleration of the collar 0.16 s after it has been pushed down 180 mm and released.
Ryan (60kg) started from rest and ran down a sand dune. His weight and his feet gave a 355N force down the incline while friction gave a 200N force up
What force on a 2.5m length of one wire due to the magnetic field of the other? In which direction does the force act on the wires?
a sqaure with sides of length 2m is perpendicular to a magnetic field of strength 10 t. if the square is rotated by 60o
An entertainer, when performing a bubble trick, forms one bubble inside another. The surface tension of the bubble liquid is ?=0.04 N m-1. What is the gauge pressure in the inner bubble
A river flows into a hydroelectric power plant with a velocity v1= 1.15 m/s and emerges from it with a final velocity v2=0.11 m/s. If water flows through the plant at a rate=3.22 m3/s and has a head of h=10.35 m. - Calculate the water mass flow rate..
The dial on an AM radio contains numbers ranging from about 530 to about 1600. These numbers correspond to the frequency of the radio station because measured in kilohertz. What is the corresponding range of wavelengths? (Enter your answers from smal..
In a typical lightning flash, the potential difference between the cloud and the ground is 10^9 V and the charge transferred is 30 C. Calculate the final speed of the car
A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier accelerates. A 61.3-kg water-skier has an initial speed of 5.5 m/s. Later, the speed increases to 11.3 m/s. Determine the work done b..
Four charges are moving with constant velocity v along the sides of square as it is shown in the diagram. The side length is a. Determine the magnitude and direction of electric and magnetic fields by these charges at an instant when they are ex..
A sphere of radius R has charge q. What is the infinitesimal increase in electric potential energy dU if an infinitesimal amount of charge dq is brought from infinity to the surface of the sphere? Express your answer in terms of the variables R, q, d..
One leg of a Michelson interferometer contains an evacuated cylinder of length L, having glass plates on each end, what is the index of refraction of the gas
If the absolute temperature of a blackbody radiator is tripled, by what factor the total energy emitted by this object increases
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