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Halley's comet moves about the Sunin an elliptical orbit, with its closest approach to the Sun being0.59 A.U. and its greatest distance being 35 A.U. (1 A.U. =Earth-Sun distance). If the comet's speed at closest approach is43 km/s, what is its speed when it isfarthest from the Sun? You may neglect any change in the comet'smass and assume that its angular momentum about the Sun isconserved.
km/s
A person's lens prescription for glasses is +3 D. If the glasses sit 1.9 cm from the eye, what is that person's near point
For a huge luxury liner to move with constant velocity, its engines need to supply a forward thrust of 7.05 105 N. What is the magnitude of the resistive force
Two blocks are connected by a string. The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.70 kg. The mass of the hanging block is m= 2.90 kg. Find the direction of the hanging blo..
An object is released from rest on a planet that has no atmosphere. The object falls freely for 3m in the first second. What is the magnitude of acceleration due to gravity on the planet?
A Carnot heat engine has an efficiency of 0.800.If it operates between a deep lake with a constant temperature of 291.0 K and a hot reservoir, what is the temperature of the hot reservoir
Two converging lenses, separated by a distance of 40.5 cm, are used in combination. The first lens, located to the left, has a focal length of 15.7 cm. Find the intermediate image distance relative to the corresponding lenses
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A 54-kg water skier is being pulled by a nylon (Young's modulus 3.7 x 109 N/m2) tow rope that is attached to a boat. What is the change in length of the rope when the skier has an acceleration whose magnitude is 0.59 m/s2
A low friction cart of mass m, traveling at speed v, collides (perfectly) elastically with a cart of triple the mass, initially at rest. What is the result of this collision
A stone of weight W has specific gravity 1.68. When the stone is suspended from a scale and submerged in water, what is the scale reading in terms of its weight in air
The blades in a blender rotate at a rate of 6900rpm. What is the angular acceleration as the blades slow down
A 5.3MeV (kinetic energy) proton enters a 0.15T field, in a plane perpendicular to the field. What is the radius of its path
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