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The spacing between the lines of a diffraction grating is 2000 nm. If red light of wave length 650 nm passes through the grating, what is the angle from the central ray of the first spot away from the central ray?
A sample 114 nd has a mass of 0.055395 kg and emits an average of 2.36 alpha particles per second. Determine the decay constant and the half-life
your physics teacher is holding a spinning wheel with angular momentum of 8 units upward while standing on a stationary
A cube 21cm on each side contains 3.5g of helium at 20 \; ^\circ \rm C. 1400J of heat energy are transferred to this gas.
You have just landed on a planet. You take out a block of mass 245g , release it from rest from a height of 14.01m, What is the acceleration of gravity on this planet
A man uses a tire iron to loosen his lug nuts. The tire iron is 25cm long. The man applies a force of 30N at an angle of 29° to the iron. What is the torque that is applied to the lug nut
At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.8 m until, Find the change in its velocity during the turn
Block A in Figure is given an initial velocity of 6 m/s up the incline. Declare of a block on a inclined plane.
A copper block is removed from a 300^0 C oven and dropped into 1 L of water at 20.0^0 C. The water quickly reaches 25.5^0 C and after that remains at that temperature. What is the mass of copper block.
An electric field of 7.90 x10^5 V/m is desired between two parallel plates, each of area 41 cm2 and separated by 2.45 mm of air. What charge should be on each plate.
A spring with a spring constatn of 1200 N/m is placed at the bottom of an inclined plane with an angle of 30 degrees with the horizontal. how far up the incline plane will the block move before it stops
A circular coil consisting of a single loop of wire has a radius of 33.0 cm and carries a current of 27.5 A. Calculate the torque on the wire
Assume a ball is spherical in shape, with a 4 inch radius. If the ball solid, made from crystal, what is the weight in units of newtons of the crystal ball
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