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An object initially at rest explodes in two fragments of masses 3.5 kg and 6.3 kg that move in diametrically opposite directions. If the speed of the first fragment is 7.9 m/s, find the internal energy of the explosion.
In a dentist's office an X-ray of a tooth is taken using X-rays that have a frequency of 6.08 × 1018 Hz. What is the wavelength in vacuum of these X-rays
A hoop and a disk, both of 0.48- m radius and 3.0- kg mass, are released from the top of an inclined plane 3.3 m high and 8.3 m long. What is the speed of the hoop
A car traveling at 93km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.75 m. What was average acceleration of the driver during the collision? Express the answer in terms of "g's," where 1.00g ..
A heavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. When the wind blows hard, the wire hums at its fundamental frequency of 80Hz. What is the mass of the sculpture?
The plane of a 5.60cm by 8.40cm rectangular loop of wire is parallel to a 0.220T magnetic field, and the loop carries a current of 6.45A . What torque acts on the loop?
Starting from rest, a constant force F = 100 N is applied to the free end of a 45-{\rm m} cable wrapped around the outer rim of a uniform solid cylinder, How Long does it take the cable to unwrap
A hollow metal sphere carries a charge of 5.0 μC. A second hollow sphere with a radius that is 4 times the size of the first carries a charge of 15.0 μC. How much charge is on the smaller sphere
A uniform rod of length L and mass M is nailed to a post so that two thirds of its length is below the nail. What is the period of small oscillations of the rod
What is the length of the greatest and thinnest string that can be located under a tension of 860 without breaking .
a circular coil has 200 turns a radius of 3.0mm and a current of 2.0a. if a proton is placed at the center of the coil
The gravitational slingshot effect. The planet Jupiter moving in the negative x direction at its orbital speed (with respect to the Sun). The mass of Jupiter is 1.89813 × 10^27 kilograms. Estimate the final speed of the spacecraft
A 25.0g sample of copper at 363 K is placed in 100g of water at 293 K. Calculate final temperature of the water
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