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The gravitational attraction between two objects varies directly as the product of their masses and inversely as the square of the distance between them. If the force of attraction between two spheres, each with a mass of 1 g that are 1centimeter apart is 6.66 x 10^{-8} dynes. Determine the force of attraction between two spheres with masses of 2 gram and 4 gram that are 4 centimeter apart.
A grandfather clock is controlled by a swinging brass pendulum that is 1.1 m long at a temperature of 30.°C. What is the length of the pendulum rod when the temperature drops to 0.0°C?
Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.50 cm, its potential energy is 0.0025 J.
Find what average power beaded to accelerate a 650 kilogram car from 0 to 65 mi/h in 5.5 s? Suppose that all forms of frictional losses can be ignored
Ricardo, mass 80 kilogram, and Carmelita, who is lighter, are enjoying Lake Merced at dusk in a 30 kilogram canoe. determine Carmelita mass
The spring in a clothespin is compressed 0.40 cm, storing energy in the form of spring potential energy. If the spring is compressed twice as far, the spring potential energy increases with 0.0046 J. What is the force constant, k, for this spring?
A 17,000-kg airplane lands with a speed of 82 m/s on a stationary aircraft carrier deck that is 115 m long. Find the work done by no conservative forces in stopping the plane.
A bicycle rim has a diameter of 0.65 {\rm m} and a moment of inertia, gauged about its center, of 0.25 {\rm kg}\cdot{\rm m^2}.What is the mass of the rim? Express your answer to two important figures and include the appropriate units.
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. Determine how much time elapses between an instant when the object's speed is at a maximum and the next instant when its acceleration is at a maxi..
A painter wishes to know whether or not he can safely stand on a ladder. Determine the maximum mass of the painter for which the ladder will remain stable when he climbs a distance d =4.9 meter up the ladder
What is the probability that a test comes back positive-indicating oil and what is the probability that there is oil in teh ground, if the test comes back positive?
A small turtle moves at a speed of 165 furlongs per fortnight. Find out the speed of the turtle in centimeters per second. Note that 1 furlong = 220 yards and 1 fortnight = 14 days.
A man is trying to lift 60.0 kg off the floor by bending at thewaist. Assume that the man’s upper body weighs 455 Nand the upper body’s centre of gravity is 38 cm from thesacrum (tailbone).
The eukaryotic ribsome is an extremely large macromolecular complex that may be 25 nanometers in diameter or larger. Estimate the diffusion constant of a ribosome in m2/sec and Picometers2/sec.
You have a set of converging lenses with focal lengths 1.05 cm, 14.5 cm, 48.0 cm, and 74.5 cm. find the distance between the objective and eyepiece
A weightlifter has been given a barbell to lift. One end has a mass of 5.05 kg while the other end has a mass of 5.20 kg. The bar is 0.20 m long. (Consider the bar to be massless, and assume that the masses are thin disks, so that their centers of ma..
A typical American house requires an average 20 kW for heating. Explain how many homes could be heated with the waste heat of this one power plant?
a particle with a charge of -60.0 nc is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm
A train is traveling away from you at 120 km/h. The train blows its400-Hz whistle. Take the speed of sound to be 340 m/s. What frequency do you hear
Two diamonds begin a free fall from rest from the same height, 1.1 s apart. How long after the first diamond begins to fall will the two diamonds be 18 m apart?
what is the magnitude FN at the highest point. The positive charges are arranged in a square. sides- .10 m the top right is 9 nC bottom right is 3 nC and the bottom left is 1 nC. find the magnitude of the electric field at the fourth corner of the ..
A body slides down a plane inclined at 40 degrees to the horizontal, with an acceleration of 2.3 meters/second^2. Determine the coefficient of kinetic friction
How much time would be required to stop a 2,000kg car that is moving at 80.0 km/hr if the braking force is 8,000N? If a space probe weighs 39,200N on the surface of the earth, what will be the mass of the probe on the surface of Mars?
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