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Light from a sodium lamp (λ=589nm) illuminates a narrow slit and is observed on a screen 66.5 cm behind the slit. The distance between the first and third dark fringes is 7.50 mm. What is the width of the slit?
A 50.0 kilogram child stands at the rim of a merry-go-round of radius 2.15 meter, rotating with an angular speed of 2.70 rad/s. Find the child centripetal acceleration
a star of mass 2.0 1031 kg that is 4.4 1020 m from the center of a galaxy revolves around that center once every 1.8 x
The asteroid belt circles the sun among the orbits of Mars and Jupiter. One asteroid has a period of 5.0 earth years. What is the asteroid's orbital speed? What is the asteroid's orbital radius? The moon's force is what percent of the sun's force? Wh..
A fire helicopter carries a 680-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant speed of 40.0 m/s, Determine the force exerted by air resistance on the bucket
n a downhill skiing competition, a 57.0-kg skier goes through the first 25.0 m of a curved path in 3.10 s. What is the average acceleration of the skier
A tourist drops a rock from rest from a guard rail overlooking a valley. What is the velocity of the rock at 4.0s? What is the displacement of the rock at 4.0s? Suppose the tourists threw the rock with an initial velocity of 8m/s down. determine the ..
A solid cylindrical 10-kg roll of roofing paper with a radius of 15 cm, starting from rest rolls down a roof with a 20μ incline, If the cylinder rolls 4.0 m without slipping, what is the angular speed about its center when leaving the roof?
A rifle is meant horizontally at a target 47 m away. The bullet hits the target 2.5 cm below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?
A 0.700-kg ball is on the end of a rope that is 2.40 m in length. The ball and rope are attached to a pole and the entire apparatus, What is the tangential speed of the ball
A single loop consists of inductors, capacitors, and resistorsconnected in series. Show that regardless of the sequence of thesecircuit elements in the loop, the behavior of this circuit isidentical to that of a simple LC circuit.
An electron is released from rest at the negative plate of a parallel plate capacitor. How fast is the electron moving just before it reaches the positive plate
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
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