Description : A 10,000-watt motor operates an elevator weighing 5000 newtons. Assuming no frictional losses, how high is the elevator raised in 10 seconds. Is it raised: w) 2 meters x) 20 meters y) 50 meters z) 100 meters
Last Answer : ANSWER: X -- 20 METERS
Description : A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1 second, the velocity of the mass is: w) 0 meters per second x) 0.5 meters per second y) 5 meters per second z) 50 meters per second
Last Answer : ANSWER: X -- 0.5 METERS PER SECOND
Description : A 50 kilogram ice skater glides across the ice in a straight line at 7 meters per second. If she bends down and scoops up a 20 kilogram child standing on the ice, what will be the final speed of the skater ... w) 1 meter per second x) 3 meters per second y) 5 meters per second z) 7 meters per second
Last Answer : ANSWER: Y -- 5 METERS PER SECOND
Description : A two-stage rocket attains a velocity of 3,000 meters per second when it drops the first stage and ignites the second. It consumes 1 kilogram of fuel per second and its exhaust speed is 2,000 meters per second. ... ? w) 2,000 Newtons x) 3,000 Newtons y) 2,000 Newton-seconds z) 3,000 Newton-seconds
Last Answer : ANSWER: W -- 2,000 NEWTONS
Description : A car is moving along a straight horizontal road at a speed of 20 meters per second. The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop in 10 seconds. The mass of the car is: w) 1250 kilograms x) 2500 kilograms y) 5000 kilograms z) 10,000 kilograms
Last Answer : ANSWER: X -- 2500 KILOGRAMS
Description : A 500 kilogram car moving at 20 meters per second strikes a stone wall and is brought to a halt in 0.1 second. The average force of the car on the wall during impact is: w) 10 Newtons x) 1000 Newtons y) 10,000 Newtons z) 100,000 Newtons
Last Answer : ANSWER: Z -- 100,000 NEWTONS
Description : A ball is thrown upwards with an initial velocity of 5 meters per second. How many seconds will it take to reach maximum height? w) 0.5 seconds x) 1 second y) 1.5 seconds z) 2 seconds
Last Answer : ANSWER: W -- 0.5 SECONDS
Description : A train locomotive whose mass is 1 x 106 kilograms is traveling EAST at a speed of 100 kilometers per hour. A NORTHERLY wind is applying a force of 100 Newtons on the locomotive. How much work is the wind doing ... 10 meters it travels? w) 0 joules x) 1,000 joules y) 10,000 joules z) 100,000 joules
Last Answer : ANSWER: W -- 0 JOULES
Description : Carlos is pulling a 40 kilogram cart with a horizontal force of 100 newtons. The force of friction on the cart is 20 newtons. The acceleration of the cart is: w) 2 meters per second squared x) 2.5 meters per second squared y) 20 meters per second squared z) 200 meters per second squared
Last Answer : ANSWER: W -- 2 METERS PER SECOND SQUARED
Description : The time needed for a net force of 10 newtons to change the velocity of a 5 kilograms mass by 3 meters/second is: w) 1.5 seconds x) 6 seconds y) 16.7 seconds z) 150 seconds
Last Answer : ANSWER: W -- 1.5 SECONDS
Description : A car with a mass of 1000 kilogram is moving at a speed of 10 meters per second. The kinetic energy of the car is: w) 100 Joules x) 5000 Joules y) 10,000 Joules z) 50,000 Joules
Last Answer : ANSWER: Z -- 50,000 JOULES
Description : A round viewing window with a 20 centimeter diameter is installed in a tank at the Shedd Aquarium. It is 5 meters below the water surface. The force on the window is approximately: w) 1,500 Newtons x) 10,000 Newtons y) 25,000 Newtons z) 50,000 Newtons
Last Answer : ANSWER: W -- 1,500 NEWTONS
Description : An impulse of 10 kilogram-meter per second acting on an object whose mass is 5 kilogram will cause a change in the objects velocity of: w) 0.5 meters per second x) 2 meters per second y) 10 meters per second z) 50 meters per second
Last Answer : ANSWER: X -- 2 METERS PER SECOND
Description : A girl throws a 0.1 kilogram ball at a wall. The ball hits the wall perpendicularly with a velocity of 5 meters per second and then bounces straight back with a velocity of 4 meters per second. The ... .4 kilogram-meters per second y) 0.5 kilogram-meters per second z) 0.9 kilogram-meters per second
Last Answer : ANSWER: Z -- 0.9 KILOGRAM-METERS PER SECOND
Description : As a 10 kilogram mass on the end of a spring passes through its equilibrium position, the kinetic energy of the mass is 20 joules. The speed of the mass is: w) 2.0 meters per second x) 4.0 meters per second y) 5.0 meters per second z) 6.3 meters per second
Last Answer : ANSWER: W -- 2.0 METERS PER SECOND
Description : What is the hydrostatic pressure at the bottom of a pool 6 meters deep? w) 60,000 Newtons per meter squared x) 6,000 Newtons per meter squared y) 600 Newtons per meter squared z) 60 Newtons per meter squared
Last Answer : ANSWER: W -- 60,000 NEWTONS PER METER SQUARED
Description : An object is projected vertically upward near the surface of the earth. At the very top of its path, the object's velocity is zero, and its acceleration is: w) 0 x) 9.8 meters per second squared DOWNWARD y) 9.8 meters per second squared UPWARD z) depends on the mass of the object
Last Answer : ANSWER: X -- 9.8 METERS PER SECOND SQUARED DOWNWARD
Description : An 8 kilogram mass resting on a frictionless horizontal surface is attached to a spring with a force constant of 50 Newtons per meter. If the velocity of the mass through the equilibrium position is 5 meters per second, what is the mass's maximum displacement from equilibrium?
Last Answer : ANSWER: 2 METERS
Description : If a sled has a constant acceleration of 2 meters per second squared and starts from rest, the distance in meters that it will have covered after 5 seconds is: w) 10 meters x) 20 meters y) 25 meters z) 50 meters
Last Answer : ANSWER: Y -- 25 METERS
Description : What is the DeBroglie wavelength of a 1,200 kilogram corvette traveling at a rate of 25 meters per second? Planck's constant is equal to 6.62 x 10-34 Joule-seconds. w) 5.3 x 10-32 meters x) 5.9 x 10-34 meters y) 2.1 x 10-38 meters z) 1.6 x 10-40 meters
Last Answer : ANSWER: Y -- 2.1 x 10-38 METERS
Description : A bullet is fired with a muzzle velocity of 1000 meters per second from a rifle clamped to a window 4.9 meters above ground level. Neglecting air resistance, the horizontal distance from the rifle at which the bullet will strike the ground is w) 4.9 meters x) 500 meters y) 1000 meters z) 4900 meters
Last Answer : ANSWER: Y -- 1000 METERS
Description : What is the wavelength in millimeters of a sound wave whose frequency is 35 KILOHERTZ. Assume the speed of sound is 350 METERS PER SECOND? w) 100 millimeters x) 1,000 millimeters y) 10 millimeters z) 1/10 millimeters
Last Answer : ANSWER: Y -- 10 MILLIMETERS
Description : The speed of sound (at sea level) in air is: w) 340 meters per second x) 400 meters per second y) 500 meters per second z) 760 kilometers per second
Last Answer : ANSWER: W -- 340 METERS PER SECOND
Description : When a 2 kilogram mass is suspended from a spring, the spring stretches 4 cm. The force constant of the spring is approximately:+ w) .5 newtons per meter x) 5 newtons per meter y) 50 newtons per meter z) 500 newtons per meter
Last Answer : ANSWER: Z -- 500 NEWTONS PER METER
Description : Two negative point charges are 2 meters apart and repel each other with a force of 2 newtons. When the distance between the charges is doubled, the force between them is w) one fourth as great x) one half as great y) twice as great z) four times as great
Last Answer : ANSWER: W -- ONE FOURTH AS GREAT
Description : An object dropped from rest near the Earth's surface will fall how far in the first second: w) 4.9 meters x) 9.8 meters y) 16.0 meters z) 32 meters
Last Answer : ANSWER: W -- 4.9 METERS
Description : A worker lifts a 10 kilogram block a vertical height of 2 meters. The work he does on the block is: w) 5 Joules x) 20 Joules y) 49 Joules z) 200 Joules
Last Answer : ANSWER: Z -- 200 JOULES
Description : Two forces have magnitudes of 11 newtons and 5 newtons. The magnitude of their sum could NOT be equal to which of the following values? w) 16 newtons x) 5 newtons y) 9 newtons z) 7 newtons
Last Answer : ANSWER: X -- 5 NEWTONS
Description : A man picks up a 50 kilogram block and carries it up a flight of stairs 10 meters high. He then carries the block back down the stairs and places the block in its original position. What is the NET work done on the block? w) 1,000 joules x) 750 joules y) 500 joules z) 0 joules
Last Answer : ANSWER: Z -- 0 JOULES
Description : An object with a mass of 5 kilograms is a distance of 5 meters above the surface of the earth. If the acceleration due to gravity is 10 meters per second squared, the potential energy of the object relative to the ... is: w) 10 joules x) 20 joules y) 100 joules z) 250 joules e) none of the above
Last Answer : ANSWER: Z -- 250 JOULES
Description : While traveling in a straight line, a car uniformly changes its speed from 50 kilometers per hour to 110 kilometers per hour in 5 seconds. The acceleration of the car during this time is: w) 5 ... per hour per second y) 50 kilometers per hour per second z) 60 kilometers per hour per second
Last Answer : ANSWER: X -- 12 KILOMETERS PER HOUR PER SECOND
Description : A car traveling at a constant velocity of 20 meters per second passes a second car which is initially at rest. The car which was at rest starts accelerating at 10 meters per second squared the instant it is passed ... car. They will meet again in: w) 2 seconds x) 4 seconds y) 6 seconds z) 8 seconds
Last Answer : ANSWER: X -- 4 SECONDS
Description : The acceleration due to gravity on the moon is 1.6 meters per second squared. If a pendulum is whose length is 6.4 meters is placed on the moon, its period will be: w) 1.57 seconds x) 3.14 seconds y) 12.56 seconds z) 25.12 seconds
Last Answer : not real
Description : A spring with a force constant of 100 Newtons per meter is loaded with a mass of 1.0 kilogram. The period of vibration of this system is: w) .03 seconds x) .06 seconds y) .31 seconds z) .63 seconds
Last Answer : ANSWER: Z -- .63 SECONDS
Description : A 5 kilogram mass is lifted at constant velocity from a shop floor by a rope that passes through a pulley attached to the shop's ceiling. Neglecting the mass of the rope and friction in the pulley, what is the approximate tension in the rope? w) 100 newtons x) 50 newtons y) 25 newtons z) 5 newtons
Last Answer : ANSWER: X -- 50 NEWTONS
Description : A 10 kilogram ball falls from a height of 5 meters and rebounds from the floor to a height of 3 meters. The energy lost by the ball is: w) 20 joules x) 98 joules y) 196 joules z) 294 joules
Last Answer : ANSWER: Y -- 196 JOULES
Description : Newton's second law states that the net force acting on a body is equal to the body's time rate of change of: w) acceleration x) mass y) momentum z) inertia
Last Answer : ANSWER: Y -- MOMENTUM
Description : The force acting between two point charges can be computed using which of the following laws? w) Ohm's Law x) Ampere's Law y) Coulomb's Law z) Newton's Second Law.
Last Answer : ANSWER: Y -- COULOMB'S LAW
Description : The rest mass of an electron is closest to: w) 10-15 kilograms x) 10-17 kilograms y) 10-30 kilograms z) 10-50 kilograms
Last Answer : ANSWER: Y -- 10-30 KILOGRAMS (accept 9.11 x 10-31kg)
Description : The mass, in kilograms, of an object whose weight on earth at sea level is 490 newtons is: w) 50 kilograms x) 100 kilograms y) 225 kilograms z) 1,100 kilograms
Last Answer : ANSWER: W -- 50 KILOGRAMS
Description : Units commonly used for entropy are: w) kilograms per degree Kelvin x) Joules per degree Kelvin y) Newtons per Coulomb z) ergs
Last Answer : ANSWER: X -- JOULES PER DEGREE KELVIN
Description : A block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of: w) 1000 x) 3000 y) 5000 z) 7000
Last Answer : ANSWER: X -- 3000
Description : The most powerful earthquake ever recorded in North America had a Richter scale magnitude closest to w) 6.5 x) 7.5 y) 8.5 z) 9.5
Last Answer : ANSWER: Y -- 8.5
Description : How much time is needed for a force of 20 Newtons to change the velocity of a 5 kilogram mass by 4 meters per second?
Last Answer : ANSWER: 1 SECOND
Description : A flywheel rotating at 5 revolutions per second is brought to rest by a constant torque in 10 seconds. How many revolutions does the flywheel make while coming to a stop? w) 25 x) 50 y) 75 z) 100
Last Answer : ANSWER: W -- 25
Description : As a pendulum swings from its highest to its lowest point, it has the SMALLEST acceleration when it is: w) at its lowest point x) at its highest point y) at a point 1/3 the distance from the top of its swing z) at a point 1/2 the distance from the top of its swing.
Last Answer : ANSWER: W -- AT ITS LOWEST POINT
Description : A ball leaves a girl's hand with an upward velocity of 6 meters per second. What is the maximum height of the ball above the girl's hand?
Last Answer : ANSWER: 1.8 METERS
Description : Susan pushes against a 100 kilogram rock with a force of 5 Newtons, but the rock doesn't move. The force the rock exerts on Susan is w) 0 Newtons x) 5 Newtons y) 20 Newtons z) 100 Newtons
Description : A typical microwave oven produces microwave radiation with a wavelength of: w) 3 meters x) 3 x 10-2 meters (read: 3 times 10 to the minus 2 meters) y) 3 x 10 -6 meters (read: 3 times 10 to the minus 6 meters) z) 3 x 10-9 meters (read: 3 times 10 to the minus 9 meters)
Last Answer : ANSWER: X -- 3 x 10-2 METERS
Description : One nanometer is equal to: w) 10-12 meters x) 10-11 meters y) 10-3 meters z) 10-9 meters
Last Answer : ANSWER: Z -- 10-9 METERS