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A 4.94-g bullet is shot through a 0.99-kg wood block suspended on a string 2.00 m long. The center of mass of the blockrises a distance of 0.50 cm. Find the speed of the bullet as itemerges from the block if its initial speed is 393 m/s.
A parallel-plate capacitor has capacitance 6.50 µF. How much energy is stored in the capacitor if it is connected to a 12.00 V battery?
Light of two wavelengths, ? = 520 nm and ?' = 550 nm falls normally on a diffraction grating having 3500 lines/cm. Determine the distance between the two spectrum lines in the first order. Repeat for the second order
A 16.0 kg rock is initially at rest upon a level table. A person suddenly pushes against the rock in the horizontal direction with a force of 8.0 N. FIND the velocity of the rock after 1.5 s
A 2000-turn coil of wire thatis 35 mm in diameter is in a magnetic field that drops from 2 Tto 0 T in 0.3 micro seconds. the axis of the coil isparallel to the field. What is the emf of the coil
The Earth has a radius of approximately 6.37 x 10 ^ 6 meters (m). Determine the surface area of the Earth in square kilometers
A) What are science misconceptions? What other names are used to refer to them? How are they formed? What difficulties do they present to the learning and understanding of science concepts?
An 8.7 hour trip is made at an average speed of 73 km/hr. If the first third of the trip (chronologically) was driven at 96.5 km/hr, what was the average speed for the rest of journey.
calculate the weight of air at 20 c in a room that measures 5.06 x 4.50 x 3.25 mpart a give your answer in newtons.
A broad beam of light of wavelength 485nm is incident at 90° on a thin, wedge-shaped film with index of refraction 1.50. An observer intercepting the light transmitted by the film sees 17 bright and 16 dark fringes along the length of the film. By..
In the measurement of length of a cylinder, the main scale reading of a vernier caliper is 1.5 cm, Find the reading of the length of the cylinder
A 17-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 32 N. Find the coefficient of kinetic friction between the runners of the sled and the snow
A crane lifts a 10,000 kg pile driver to a height of 10 metersevery cycle and then releases it to a free fall and drive a pileinto the river bed. the time to raise the pile driver averages 30seconds. What is the potential energy after the pile driv..
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