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Suppose a 29.0-kg child sits 1.12 m to the left of center on the seesaw. A second child sits at the end on the opposite side, and the system is balanced.
(a) Find the mass of the second child.
kg
(b) Find the normal force acting at the pivot point.
N
A converging lens has a focal length of f = 22.0 cm. An object is placed 41.0 cm from the lens. Find the size of the image in cm if the object has a height of 4 cm. express answer with one decimal place.
q1. assume that when you ride on your 7.60-kg bike the weight of you and the bike is supported equally by the two
What is the electric potential energy of a system that consists of two protons 2.0×10?15 apart-as might occur inside a typical nucleus?
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 10.00 radius of curvature. What is the car's speed at the bottom of dip? What is the car's speed at the bottom of the dip?
At an altitude of 260 m above the Earth's surface, the field is only 105 N/C. Calculate the charge density of the air (assumed constant).
A compound microscope uses a 73.0mm lens as the objective and a 2.1cm lens as the eyepiece. find the total magnification produced by the microscope
A person bounces up and down on a trampoline, while always staying in contact with it. What is the maximum speed attained by the person
A racing car start from rest in the distance and accelerates with a uniform rate of speed 35m/s in 11 sec moving in a circular path of radius 500 m assuming constant tangential acceleration find (1) the tangential acceleration. (2) The centripetal..
A soldier is tasked with measuring the muzzle velocity of a new rifle. Knowing the principles of projectile motion, What is the most accurate muzzle velocity that the soldier can report to his sergeant
What is the amplitude of the subsequent oscillations. A catcher "gives" with a baseball when catching it. If the baseball exerts a force of 519 N on the glove, so that the glove is displaced 10.0 cm, how much work is done by the ball.
A series RLC circuit with a resistance of 280? has capacitive and inductive reactances of 320? and 460? , respectively. What is the power factor of the circuit
An RLC circuit is connected to a 220 V 60 Hz ac voltage source. Determine the power loss in the circuit
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