Motion in Gravitational Potential

40. A rocket is projected upward from the earth's surface(r=Re)with an initial speed of Vo that carries it to a distance r=1.5Re from the center of the earth. What is the launch speed Vo? Assume that air friction can be ignored and give your answer in terms of g and Re. please show all work with correct answers and provide i ...continues

Static Equillibrium

20. A trucker needs to weigh a truck that is too long to fit on a platform scale. When the front wheels of the truck are run onto the scale, the scale reads W1. When the rear wheels are run onto the scale so that the front wheels are off, it reads w2. a) Prove that the total weight of the truck is W1+W2. b) Prove that if the tr ...continues

Angular Momentum and COnservation of Angular Momentum

40. A uniform 2.45kg spinning disk with a radius of 0.243m is brought to rest by a brake pad pressed against the side 0.183m from the rotation axis. The wheels is brought to rest from an angular velocity of 15.4rad/s in a time of 24.3s. What frictional force was applied by the brake pad.

Planck's function

Using planck's energy density per unit frequency formula. r(x)= x^3 / e^x -1. Plot r(x) from excel spread sheet and determine its maximum. I need help in using excel to graph this inorder to find the maximum. Then based on the maximum I am supposed to determin planck's constant

basket cushioning for dropping an egg

using only gum drops and toothpicks, what is the best structure to build to protect an egg when you drop the egg inside this structure? ( basket cushioning effect)

gravitation

(i) Rewrite the equation attached, representing fluid flow in the presence of a buoyancy force... (see attachment)

Mean density of the Earth to that of the Sun

Without using the value of G or the actual value of any masses, estimate the ratio of the mean density of the Earth to that of the Sun... (see attachment)

Electric Charge and Electric Field

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Electric Charge and Electric Field

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Electric Charge and Electric Field

Please see attachment