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1 a 500 kg block is pulled from rest by a force of 10000 n at an angle of 370deg across a horizontal rough surface over
physics ii lenses two converging lenses each has focal length of 20 cm they are separated by a distance of 70 cm an
hanging from threads are two charged balls made of pith a very light spongy material that comes from inside the stems
a uniformly charged plastic disk has a radius of 0270 m at what distance from the center along the central
a steam catapult launches a jet aircraft from the aircraft carrier john c stennis giving it a speed of 175 mih in 250 s
a battleship simultaneously fires two shells toward two identical enemy ships one shell hits ship a which is close by
a heater coil connected to a 240-vrms ac line has a resistance of 45a what is the average power usedb what is the
1 one mole of an ideal gas at 25c and 1atm undergoes the following reversibly conducted cyclea an isothermal expansion
in this problem you will apply kinematic equations to a jumping flea take the magnitude of free-fall acceleration to be
suppose you design an apparatus in which a uniformly charged disk of radius r is to produce an electric field the field
helium gas at constant pressure of 16 atm expands in volume from 257 l to 863 l the temperature is held at 357 k
you measured the speed of sound to be 3849 ms your lab partner measured it to be 3422 ms what was the percent
a sound wave travels in air with frequency 1372 hz assume the temperature of the air is 20 degrees ca if we can hear
a tennis player receives a shot with the ball 0060 0 kg traveling horizontally at 535 ms and returns the shot with the
a particular string of length 32 m resonates in four loops at a frequency 360 hza what is the distance between two
a train with a maximum speed of 60 mph travels between two stations 10000 ft apart it has an acceleration rate of 400
determine the minimum velocity and angle required to shoot a projectile over a wall and land 14ft from origin the wall
a coffee cup calorimeter contains 2832 g of water at 202 deg c then 7968 g of water with an initial temperature of 658
a 1250 kg car is moving at 187 ms then 203 kj of work is done on the car to increase its speed what will be the cars
how many grams of barium hydroxide must be added to 237-l of distilled water to make a saturated
an electron enters a parallel plate capacitor with a speed of 545e06 ms an electric field in the capacitor has
a 541-kg ice skater is standing at rest on a frozen lake the friction between his skates and the surface of the ice is
a roller-coaster car moves 192 ft horizontally and then rises 144 ft at an angle of 30deg above the horizontal it then
carbon monoxide can be reacted with hydrogen to produce methanol the chemical equation for the reactions iscog 2h2 g