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Suppose a 29.5 kg child sits 1.89 m to the left of center on the same seesaw as the problem you just solved. A second child sits at the end on the opposite side, and the system is balanced.
(a) Find the mass of the second child.
mchild 2 = kg
(b) Find the normal force acting at the pivot point.
Fn = N
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 16.0 cm, find electric feild just outside paint layer
A descent vehicle landing on the moon has a vertical velocity toward the surface of the moon of 35.00m/s. At the equal time, it has the horizontal velocity of 55 m/s
A photoflash unit makes a very bright light for a very short time. Discuss differences in the exposure of the film with and without a flash unit. Consider the f-stop and shutter speed in your deliberation.
A 320 piano slides 3.3 down a 24 incline and is kept from accelerating by the man who is pushing back on it parallel to the incline. Determine the work done by the man on the piano.
A crate travels 30 m due to a constant force of 350 N. The friction can be neglected for the first 15 m. What is the final speed of the crate if it weighs 110 kg
A street lamp weighs 146 N. It is supported equally by two wires that form an angle of 120° with each other.
A car travelling 80 km/h slows down at a constant 0.50 m/s^2 just by "letting up on the gas." Compute the distance the car coasts before it stops in meters.
An electric water heater operates at 66 A and 16 kilowatts, Calculate N (the total number of resistors) and the cost of manufacturing the heating element if in a pack of 100 resistors cost $0.50
A relief airplane is delivering a food package to a group of people stranded on a very small island. What is the speed of the package when it hits the ground in mph
An uncharged spherical conducting shell surrounds a point charge - q at its centre. Then a charge +3q is placed on the outside surface of shell.
Unpolarized light passes through five successive Polaroid sheets, What is the intensity of the transmitted beam
What is the greatest possible distance from the wall
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