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A 4-g bullet is fired into a 1.5-kg block that is resting on a frictionless surface and is attached to a spring with spring constant 434 N/m. After impact, the block with the embedded bullet slides 7 cm across the table, compressing the spring, before coming momentarily to rest. What was the initial speed of the bullet?
A newly discovered planet has twice mass of the earth, but the acceleration because of gravity on the new planet's surface is exactly the same as the acceleration due to gravity on the earth's surface. What is the radius Rp of the new planet in te..
What is the magnitude of the resultingforce (in nano-Newtons) on the 2 nC chargeat the origin? The Coulomb constant is
A 2.30-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.40sin(2?t), Find the resonance angular frequency of the system
a pure sample of atomic gas has atoms with six principal quantum numbers that can yield several emission lines. what is
A small sphere that carries a charge of 6.45 ?C is whirled in a circle at the end of an insulating string. What average current does this rotating charge represent
The star Sirius is a distance of 8 light years from the earth. If Sirius suddenly stopped shining, how much longer would it be seen on earth
A small motor is mounted on the axis of a space probe with its rotor (the rotating part of the motor) parallel to the axis of the probe. Through how many revolutions has the rotor turned
When the emf for the primary of a transformer is of amplitude 7.10 V, the secondary emf is 85.2 V in amplitude. What is the transformer turns ratio
question we want to position a space probe along a line that extends directly toward the sun in order to monitor solar
he empire state building is 450 meters high. A pennydropped from the top would have what speed when it hits the sidewalk? A baseball player pops a flyball 20.0m straight up and the cathcer tossess his mask to catch the ball. How long will the cathc..
A solid cylindrical disk has a radius of 0.45 m. It is mounted to an axle that is perpendicular to the circular end of the disk at its center. What is the mass of the disk
The four tires of an automobile areinflated to a gauge pressure of 2.0 x 105 Pa. Determine the weight of the automobile
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