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A projectile is launched with a speed of 40 m/s at an angle of 60o above the horizontal. Use conservation of energy to compute the maximum height reached by the projectile during its flight?
A satellite moves in a circular orbit around the Earth at a speed of 4420 m/s. Determine the period of the satellite's orbit
a 10.5-kg uniform board is wedged into a corner and held by a string at a 50 degree angle. calculate the tension in the
neutrons are slightly more massive than protons. if the mass of a neutron were smaller than its actual value yet still
An inductor in the form of a solenoid contains 380 turns and is 15.8 cm in length. What is the radius of the solenoid
Assuming that the depth of Earth's atmosphere is 100.0 km, what is the total charge incident on the atmosphere in 177.0 s? Assume that the radius of the surface of the Earth is 6378. km.
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. Find the force acting on the board by the retaining wall
three resistors 2,6,and 12 are in parallel connected across a dc voltage source of the total current through this circuit is 2.0A, what is the applied voltage
Pulsars are neutron stars that emit X rays and other radiation insuch a way that we on Earth receive pulses of radiation from thepulsars at regular intervals equal to the period that they rotate.Some of these pulsars rotate with periods as short a..
A father racing his son has three-fifths the kinetic energy of the son, who has half the mass of the father. What is the original speed of the son
Two charges of equal magnitude exert an attractive force of 7.5×10-4 N on each other. If the magnitude of each charge is +2.4? C, how far apart are the charges
ball rolls onto the path of your car as you drive down a quiet neighborhood street. To avoid hitting the child that runs to retrieve the ball, How far did the car move while breaking
No photoelectrons are emitted from a certain metallic surface when the momentum of the photons striking the surface is smaller than p0= 1.6x10^-27 kg m/
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