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In order to test a certain property of light, a student arranged four similar card boards with holes at the center on a straight line such that all the holes are on a straight line. He then placed a burning candle at one end of the card boards and observed through the hole of a card board on the opposite end. What property of light was the student investigating?
A block is connected among two springs on a frictionless, horizontally level track. The other end of each spring is respectively anchored to a vertical pin set at opposite ends of the track.
A copper rod 83.0 cm long and with a diameter of 1.3 cm is used to poke a fire. What is the rate of the heat flow through the rod
A small particle with a mass of 8.50 10-20 kilogram is oscillating with simple harmonic motion with a period of 3.00 10-5 second and a maximum speed of 7.50 103 m/s. Estimate the maximum displacement of the particle
A cyclist rides a bike at 12.0 miles/hour. The diameter of the wheels is 70.0cm. (a) Through how many turns do the wheels spin for the 12.0mile trip, what is the bikes angular acceleration
After a golf ball is hit it takes off with an initial speed of 20.9 m/s and at an angle of 32.5° with respect to the horizontal. How far would the ball fly if the initial speed was doubled
In the ground state of hydrogen, the uncertainty in the position of the electron is roughly 0.10 nm. If the speed of the electron is on the order of the uncertainty in the speed, how fast is the electron moving?
A skier (m=63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 6.10 m and D = 12.2 m, find H.
a 2.00g bullet strikes a 2.00 kg block hanging from a long cord. the bullet imbeds itself in the block causing the
A golf ball is dropped from rest from a height of 9.90 m. It hits the pavement, then bounces back up, rising just 5.30 m before falling back down again. A boy then catches the ball when it is 1.16 m above the pavement. Ignoring air resistance, comput..
A flying wedge spaceship is a right triangle in side view. At rest, the base and height (which form the 90° angle) measure 8.9 m, calculate the angle of the triangular nose to be
q1. suppose a small metal ball of mass and negative charge. the ball is released from rest at the point and constrained
If the football has a mass of 0.47kg and the time of contact with the ball is 0.021s, what is the force exerted by the ball on the kicker's foot.
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