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Halley's comet, which passes around the Sun every 76 years, has an elliptical orbit. When closest to the Sun (perihelion) it is at a distance of 8.823 x 1010m and moves with a speed of 54.6 km/s. When farthest from the Sun (aphelion) it is at a distance of 6.152 x 1012m and moves with a speed of 783m/s. Find the angular momentum of Halley's comet at perihelion. (Take the mass of Halley's comet to be 9.8 x 1014kg.) Find the angular momentum of Halley's comet at aphelion.
1consider a long straight wire with current i running through it. you measure the magnetic field to be b at a
You are traveling on an airplane. The velocity of the plane with respect to the air is 130.0 m/s due east. What is the speed of the plane with respect to the ground
A 200 g hockey puck is launched up a metal ramp that is inclined at a 30° angle. What vertical height does the puck reach above its starting point
A proton that has a mass m and is moving at 390 m/s in the + direction undergoes a head-on elastic collision with a stationary oxygen nucleus of mass 16m
Vital Signs of Planet Earth
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. How far short of the target should it drop the package
As part of a class project you are given 0.900 g of nichrome and asked to fabricate a wire with uniform cross-section. What length of wire do you end up with
The lenes of a particular set of binoculars have a coating with index of refraction n=1.38, If the lenses refelct a wavelength of 540nm the most strongly, what is the minium thinkcness of the coating
Find the current in a 9.00 ? resistor connected to a battery that has an internal resistance of 0.30, What is the emf of the battery
What is this force in Newtons.
A siren emitting a sound of frequency 1000 Hertz moves away from you towards the face of a cliff at a speed of 10 m/s. Compute the beat frequency between the two sounds
A plank 2.00 cm thick and 14.9 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
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