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A baseball has a velocity of 41.5 m/s (92.8 mi/h), directed horizontally, as it is released by a pitcher. The ball's velocity 0.0100 s before it is released is 39.4 m/s, directed 3.75° above the horizontal. Calculate the ball's instantaneous acceleration just before it is released.
Find the total number of lines in a 2.90 wide diffraction grating whose third-order spectrum has the 640 hydrogen- spectral line at an angular position of 39.0.
A race car can be slowed with a steady acceleration of -11 m/s2 if the car is going 55m/s how many meters would it travel before it stops.
A light train is travelling on a straight section of track at a constant speed of 15 rm m/s. As it approaches next station, it starts to slow down at a rate of 5 rm m/s^2 until it stops at the station.
The specific heat of mercury is 138 J/kg Co Determine the latent heat of fusion of mercury using the following calorimeter data: 1 kg of solid Hg at its melting point of -39.0º C is placed in a 0.620 kg aluminium calorimeter with 0.40 kg of water ..
Four copper wires of equal length are connected in series. The cross sectional areas are 1 cm2, 2 cm2, 3 cm2, and 5 cm2, What is the voltage across the 2 cm2 wire in units of volt
A long, straight wire has a 13.7 A current flowing in the positive x-direction. Close to wire is a square loop of copper wire that carries a 2.17 A current in direction shown. The near side of the loop is d = 46.3 cm away from the wire.
A red laser from the physics lab is marked as producing 632.8-nm light. When light from this laser falls on two closely spaced slits, What is the wavelength of light produced by the pointer
two blocks, each of mass m=2.80kg are hung from the ceiling of an elevator. If the elevator moves with an upward acceleration a of magnitude 1.9m/s^2, find the tensions T1 and T2 in the upper and lower strings
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat.
Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 3.3 m/s..
What's the quickest way to approach this problem? A car is traveling at 80 km/h along the highway. A second car is located 1 km behind, but traveling at 100 km/h. How long does it take for the second car to pass the first?
An air-filled parallel plate capacitor with a plate spacing of 1.20 cm has a capacitance of 4.30, Calculate the dielectric constant of the inserted material
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