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A tuning fork with frequency 540 Hz is dropped from a building of height 125 m with a musician. The musician can hear the fork sounding as it falls. What frequency does the musician hear right after three seconds?
Cart C has mass 123 gram cart D had mass 345 gram The carts are on a frictionless track. Calculate the total kinetic energy of the carts after collision
A 2.50 cm by 2.50 cm parallel-plate capacitor has a 2.30 mm spacing. The electric field strength inside the capacitor is 6.00×10^4. What is the potential difference across the capacitor
An electric generator contains a coil of 90 turns of wire formed into a rectangular loop 40.0 cm by 35.0 cm, placed entirely in a uniform magnetic field with magnitude B = 3.50 T and with Bvec initially perpendicular to the coil's plane. What is the ..
The 3.0-m-long pipe in the figure is closed at the top end. It is slowly pushed straight down into the water until the top end of the pipe is level with the water's surface. What is the length L of the trapped volume of air?
A unknown mass of silver is pulled from a furnace, where the temperature was 900 degrees Celsius, and placed on a very large block of ice at 0.0 degrees Celsius, assuming that all the heat is given up by silver is utilized to melt 1.3kg ice and that ..
An object has a kinetic energy of 299 J and a momentum of magnitude 25.5 kg·m/s. Find the speed and the mass of the object
how much heat in kcal must be added to 0.60 kg of water at room temperature 20degc to raise its temperature to
From the top of a mountain a hiker looks at the next mountain top in the distance and notes the compass direction of the peak. how far has the hiker walked
1. the magnetic domains that become aligned in the iron core contribute to the overall magnetic field of the coil and
A thin spherical shell has a radius of 2.1 m and a mass of 360 kg, and its center is located at the origin of a coordinate system. What is the gravitational force of attraction between the two shells
A 51.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 ? 10-8, What must be the diameter of the wire
Katie and Emily are riding on a circular merry-go-round that has a radius of 5 m. Katie is on a horse that is 2.5 m from the center of merry-go-round and Emily is on a tiger that is 4.5 m from the center of the merry-go-round.
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