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A dollar bill is about 15.5 cm long. If ten trillion dollar bills were laid end to end around the Earth's equator, how many times would they encircle the planet? Take the radius of the Earth at the equator to be about 6,378 km.
What is the buoyant force acting on a cube of copper that measures 4.49 cm on its each side if it is immersed in water. The density of copper is 8933kg/m3
A person weighs 691 N in air but only 499 N when standing in water up to the hips. Find the volume of each of the person's legs
A point charge is a = 1.5 m below the end of a continuously charged rod with charge Q = 5 ?C, Write an expression for the differential element of the y component of the Electric Field at P in terms of the charge density
A 1200kg car rounds a curve of radius 65 m banked at an angle of 14degrees. if the car is traveling at 30km/hr, will a friction force be required? if so, how much and in what direction.
In a television set the power needed to operate the picture tube comes from the secondary of a transformer. Find the turns ratio Ns/Np of the transformer
A semi-infinite rod carrying a uniform charge distribution of lambda coulombs per meter lies along the positive x axis from x = 0 to x = infinity. Find the components of the electric field at the point with coordinates x, y, and z = 0
A 70-kg climber is hanging by a rope off the edge of a cliff, with the top end of the rope tied to a 200-kg rock. However, the rock is sitting on an icy horizontal surface,
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 52.0 m/s, What is the work done on the ball by the racket
A38.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of20.0m. What force does the seat exert on the child at the highest point of the ride
A 1000 kg roller coaster car starts from rest from a hilltop 60.0 m above the ground and moves (without power) down, what is the average frictional force between the car's wheels and the track
A flywheel rotates with an angular speed of 23rev/s. As it is brought to rest with a constant acceleration, it turns 45rev. How much time does it take to stop
I hold a flat mirror 24.6 cm in front of my face. There is a freckle on my face 1 mm in diameter. Find the angular size of the freckle on the image of my face as viewed by my eye
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