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A helium-neon laser (? = 632.8 nm) is used to calibrate a diffraction grating. If the first-order maximum occurs at 21.5°, what is the spacing between adjacent grooves in the grating? (In this problem, assume that the light is incident normally on the gratings.) ........... µm
A proton is moving along the axis of a uniformly charged thing ring of 20nC/cm. The radius of the ring is 5cm. what initial speed does it need to be able to cross the plane of the ring
A -10.5 nC point charge and a + 21 nC point charge are 16.5 cm apart on the x- axis. where the electric potential is zero
a gymnast is performing a floor routine. In a tumbling run she spins through the air, How much time does this maneuver take
If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
A 3.1kg block of wood sits on a table. A 3.0 gbullet, fired horizontally at a speed of 540m/s , find the speed of the block immediately after the bullet exits
A slab of a thermal insulator with a cross-sectional area of 120cm2 is 3.00cm thick
Oxygen gas having a volume of 1180 cm3 at 47.3°C and 1.00 x 105 Pa expands until its volume is 1900 cm3 and its pressure is 1.08 x 105Pa. determine the final temperature of the sample
2 mol of a diatomic ideal gas expand adiabatically and quasi-statically. The initial temp of the gas is 300K, What is the final temp of the gas
A fruit fly 2.16 mm long is examined with a simple magnifier. What is the focal length of the magnifier
Two test charges are located in the x-y plane. If q1 = -3.20 nC and is located at x = 0.00 m, y = 1.160 m and the second test charge has magnitude of q2 = 5.00 nC and is located at x = 1.00 m, y = 0.500 m, calculate the x and y components, Ex and ..
q1. a ball in flight is recorded and analyzed using digital video analysis software. the analysis produced the result
A fireworks rocket explodes at a height of 100 m above the ground. What is the total sound energy of the explosion
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