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A photon of red light (wavelength = 710 nm) and a Ping-Pong ball (mass = 2.10 × 10-3 kg) have the same momentum. At what speed is the ball moving?
We wish to maintain a pattern with a given number of loops and a fixed given frequency, If we reduce the density of the string
A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 20 deg. above the horizontal. How far does the jumper jump?
A teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 13.1 rpm in 10.7 s. what force is required at the edge
What is the resistance of a lightbulb that uses an average power of 55.0 W when connected to a 60.0 Hz power source having a maximum voltage of 180 V
A driver in a car travelling at a speed of 58.0 mi/h sees a deer 126 m away on the road. Calculate the minimum constant acceleration that is necessary for the car to stop without hitting the deer (assume that the deer does not move in the meantime).
A neutron star is the remnant left after certain supernovae (explosions of giant stars). Typically, neutron stars are about 20 in diameter and have around the same mass as our sun. What is a typical neutron star density in g/cm^3?
A circuit contains six 240 ohm lamps with 60 W bulbs and a 10 ohm heater connected in parallel. the voltage across the circuit is 120 V. If the circuit has a fuse rated at 12 A, would it melt if everything is on.
The rocket moves for 3.00 s along its initial line of motion with an acceleration of 32.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile. Find out the maximum altitude reached by the rocket.
The motion of peg P is constrained through the lemniscate curved slot in OB and by the slotted arm OA.
An electron moves at a speed of 15000 m/s in a circular path of radius 2.2 cm. Find the strength of the magnetic field inside the solieod
An 93-g arrow is fired from a bow whose string exerts an average force of 120N on the arrow over a distance of 77cm, What is the speed of the arrow as it leaves the bow
A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s, Calculate the initial and final kinetic energies for this system.
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