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What is the quantity corresponding to the area under the curve (the induced voltage multiplied by its respective time interval)? Hint: rearrange the equation representing Faraday's law.
An inductor has an inductance of 0.074 H. The voltage across this inductor is 30 V and has a frequency of 850 Hz
A force of 7 pounds is required to hold a spring stretched 0.5 feet beyond its natural length. How much work (in foot-pounds) is done in stretching the spring from its natural length to 0.9 feet beyond its natural length.
one way to decrease your use of fossil fuels is to heat your water via solar radiation. a solar water heater runs cold
A thin spherical shell has a radius of 4 m and a mass of 225 kg, and its center is located at the origin of a coordinate system. find the gravitational force of attraction between the two shells
When a person is given intravenous fluid, the bag containing the fluid is typically held about 0.9 m above the person's body. what is the pressure in the person's blood
A neighborhood transformer on the top of a utility pole transforms 14.0 kV 60.0 Hz alternating voltage down to 120.0 V to be used inside a house. how many turns does the primary coil have
An electric wire that has a mass of 5 kg for a 20m length is strung between two poles 20 m apart. What should be the tension in the wire if it is to take 0.8 seconds for a pulse to travel along the wire from one pole to the other.
You were driving a car with velocity ‹ 19, 0, 11 › m/s. You quickly turned and braked, and your velocity became ‹ 13, 0, 15 › m/s. The mass of the car was 1200 kg. What was the (vector) change in momentum
A stamp collector is viewing a stamp with a magnifying glass held next to her eye. What is the refractive power of a magnifying glass that has an angular magnification of 7.9 when the image of the stamp is located at the near point
A century ago, scientists believed that the universe was infinite with no beginning and no end. Einstein then predicted that the universe is either contracting or expanding. Why do you think Einstein thought that the universe had no beginning? Do you..
In a diffraction grating experiment, light of 600 nm wavelength produces a first-ordered maximum 0.35 mm from the central maximum on a distant screen. What is the wavelength of the light from the second source
a certain elevator cab has a total run of 190 m and a maximum speed of 305 mmin and it accelerates from rest and then
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