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A spacecraft has a nonrelativistic (or classical) momentum whose magnitude is 3.10 × 1013 kg.m/s. The spacecraft moves at such a speed that the pilot measures the proper time interval between two events to be one-third the dilated time interval. Find the relativistic momentum of the spacecraft. in kg*m/s
In the Bohr model of the hydrogen atom, an electron in the 3rd excited state moves at a speed of 2.43 105 m/s, What is the effective current associated with this orbiting electron
A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 12.0 m/s, and the distance from the limb to the level of the saddle is 4.00 m.
The locomotive is moving at 25 km/h. The engineer of the high speed train immediately applies the brakes. What must be the magnitude of the resulting constant deceleration if a collision is to be just avoided.
A 0.6 kg block of ice is sliding by you on a very slippery floor at 3.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.0035 seconds.
A rabbit runs in a straight line with a velocity of +1.6 m/s for a period of time, rests for 9 s, and then runs again along the same line at +0.55m/s for an unknown amount of time. The rabbit travels a total distance of 1116m, and its average spee..
Radiation falling on a perfectly reflecting surface produces an average pressure p. what is the pressure at that surface in terms of p
Suppose a 61 kg boy and a 43 kg girl use a mass less rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find the magnitude of the acceleration of the boy toward the girl.
A block weighing 15.0 N rests on the floor. What force does the floor exert on the block
A charged particle is injected at 143 m/s into a 0.0855-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
It walks 2.1 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find out how far the dog is then from the shore.
A source emits sound uniformly in all directions. There are no reflections of the sound. At the distance r1 from the source the sound is 3.9 dB louder than it is at a distance r2 from the source. What is the ratio r1/r2.
An aluminum-alloy rod has a length of 10.006 cm at 23.400°C and a length of 10.024 cm at the boiling point of water, What is the length of the rod at the freezing point of water
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