If the Earth's period is 365.25 days and its distance to the (center of the) Sun is one astronomical unit (AU), what is the period, to the nearest day, of an asteroid in a circular orbit about the...
If the Earth's period is 365.25 days and its distance to the (center of the) Sun is one astronomical unit (AU), what is the period, to the nearest day, of an asteroid in a circular orbit about the...
(a) Calculate the magnitude of the acceleration due to gravity on the surface of Earth due to the Moon. (b) Calculate the magnitude of the acceleration due to gravity at Earth due to the...
A planet has ? the density of earth but 2x the radius. find the surface gravitational force on this planet. (Hint: Earthâ€™s is 10N/Kg)
assume that the force exerted by your arms is the same in both cases
A penny is placed on a record player moving at a constant speed with a period of 1.50 s. If the coefficient of static friction is 0.270, how far from the center of the record can the penny get before...
does a planet travel faster when it is nearer the sun or farther from the sun? what is the gravitational attraction between a dating couple sitting 0.152 m apart if the boy weighs 715...
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A box of mass 22 kg slides down a 22o slope with a coefficient of friction of 0.13. Find: a)the weight of the box b) the normal force on the box c) the frictional force...
If a propeller, on a stationary mounting, blows back 36kg of air per second at a speed of 45 knots, what thrust does it produce?
2. if you are using a hammer to hit a stake into the ground why will the acceleration of the hammer be less than the acceleration of the stake? a. force of the hammer...
alicia is pushing a box with a mass of 5 kilograms across a floor. jake is pushing a box with a mass of 10 kilograms across a floor. how much force will jake have to exert on the box he...
A 32.8-kg traffic light is supported by two wires. T1 is of the right wire which connects to the vertical pole at 30 degrees below horizontal. T2 is of the left wire which connects to the...
A force, F of 25 N is acting in the direction of a = (6,1). a) Find a unit vector in the direction of a. b) Find the Cartesian vector representing the force, f, using your...
At a building site, an iron girder of mass 400 kg is suspended from a crane by a steel cable. Assume that the cable has a circular cross-section of diameter 24 mm. a.What is the tensile force...
A block of mass M = 16 kg with a pulley attached slides along a frictionless ledge. It is connected by a massless string to a block of mass m = 5.2 kg. (a) Find the acceleration of each block...
Both sides of wire start out with 5 washers with the total mass of 5m. When N washers are transferred from the left side to the right side, the right side descends 70.56 cm in 0.60 s. Find N...
A 74.4-kg airplane pilot pulls out of a dive by following, at a constant speed of 184 km/h, the arc of a circle whose radius is 282.0 m. (a) At the bottom of the circle, what are the direction...
A 15000-kg helicopter is lowering a 4300-kg truck by a cable of fixed length. The truck, helicopter, and cable are descending at 17.0 m/s and must be slowed to 5.00 m/s in the next 56.0 m of descent...
A 23kg suitcase is being pulled with constant speed by a handle that is at an angle fo 25 degrees above the horizontial. If the normal force exerted on the suitcase is 200N, what is the F applied...
Driving home from school, you spot a ball rolling out into the street. You brake for 1.30s, slowing your 1000kg car from 17.0m/s to 10.0m/s. What was the average force exeerted on your car during...