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A 92 gram arrow is fired from a bow whose string exerts an average force of 100 N on the arrow over a distance of 75 cm. Determine the speed of the arrow as it leaves the bow?
Jupiter has a radius of 71,492km and a mass of 1.9x10^27 kg. Jupiter's moon has a mass of 9x10^22kg and orbits at a distance of 422x10^3km. find the gravitational force on the moon due to Jupiter
A hurricane wind blows across a 7.10 15.1 flat roof at a speed of 130. How much force is exerted on the roof
one end of a copper rod is in thermal contact with a hotresrvoir at T=500K, and the other end is in thermal contact with acooler resvoir at T=300K. find the entropy change of each reservoir
A person whose eyes are 1.75m above the floor stands in front of the plane mirror. The top of her head is 0.11.
describe in detail the effect of increasing torqueload on the excitation current armature current and output power as
Consider a solid that sublimes (goes from solid to gas) at 300K. In the solid phase, the molecules have six degrees of freedom and u0=-0.15 eV, What is the latent heat of sublimation in joules per mole
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. Assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has..
A very small call (m = 4 gms) hangs on a thread at an angle of ? = 30o. What is the strength of the electric field
An object (3.7kg) is lifted 4.6 m above the ground and thendropped to the ground. What is the object's Pe at the top ofthe lift, How much work did gravity do on the object
A solid steel cylinder is standing (on one of its ends) vertically on the floor. The length of the cylinder is 3.5 m and its radius is 64 cm. What is the weight of the object
You want to propel a 1.50 kg t-shirt from a spring-loaded launcher to a velocity of 10.0 m/s. How far back do you have to compress the spring
the drawing shows a skateboarder moving at 5.4 ms along a horizontal section of a track that is slanted upward by 48deg
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