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A closed system is observed to have 47 objects in it. Initially, the total energy of the system is 897 J. After 5.1 h have passed, how much total energy will the system contain?
An underwater diver sees the sun 58 above horizontal. How high is the sun above horizon to a fisherman in a boat above the diver.
A bar of length 1.5 meters moves to the left at 4.6 m/s along a set of conducting rails. The rails and bar have a net resistance of 10 Ohms. Determine the induced electromotive force
A coil of wire containing N turns is in an external magnetic field that is perpendicular to the plane of the coil and it steadily changing, what will be the induced emf in the coil
For someone who chooses y=0 to be 5 meteres above the ground and up as positive, what will he get for the potential energy
questionconsider a person m80 kg standing on the flat horizontal ground at a location on the equator of thenbspearth.
We all sound like great singers in the shower, due to standing waves. What are the wavelengths of the first two overtones for this shower
The concept of thermionic emission is the basis of modern X-ray tubes, which are the workhorse of a medical X-ray image. How many electrons, ne, has the filament lost
A thin uniform rod (mass = 0.95 kg) swings about an axis that passes through one end of the rod and is perpendicular to the plane of the swing. What is the maximum kinetic energy of the rod as it swings
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
At rest, the car's horn sounds at a frequency of 455 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 427 Hz. What is speed of the car.
You shine violet light through a diffraction grating (200 lines/cm) on a screen 2.0 m from the grating. The width of the light beam is 0.15 mm. How many slits will the light pass through
A hockey stick is swung with an average angular acceleration of 1.5 rad/s2. What is an angular velocity of the stick when it strikes the ball at the end of 0.8 second swing.
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