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A farmhand pushes a 23 kilogram bale of hay 3.9 meter across the floor of a barn. If she exerts a horizontal force of 91 Newton on the hay, determine how much work has she done?
An object 4.0 cm high is placed 20 cm to the left of aconverging lens with a focal length of + 8.0 cm. Adiverging lens with a focal length of – 12 cm is placed40 cm to the right of the converging lens. Describe the location,nature and size of the i..
A copper wire of radius a = 0.331 mm has an aluminumjacket of outer radius b = 0.459 mm. There is a currenti = 2.23 A in the composite wire. Take the resistivity for copper and aluminum to be 1.69 x 10-8Ω·m and2.75 x 10-8Ω·m.
If a spaceship is approaching the earth at 0.24c, what is the speed of the capsule relative to the ship
Two charges, +4.0 and -16 µC, are fixed in place and separated by 3.0 meter. Find what would be the force on a charge of +14 µC placed at this spot
A rider on a motorcycle that hass a mass of 195 kg is traveling with a speed of 24 m/s. What is the approximate total rational kinetic energy of the wheels
A fountain consists of a large pool of water and a column of waterprojected upward by means of a pump. The column has across-sectional area of 114 cm2at its base and reaches a height of 2.30m. Compute the speed of water as it leaves the pool.
The surface tension of water is 0.0730 N/m. What is the height of the water in a capillary tube of diameter 1.00 mm
A 93.9 gram lead ball is dropped from rest from a height of 4.72 meter. The collision between the ground and the ball and is totally inelastic. determine its change in temperature
A counter attendant in a diner shoves a ketchup bottle with a mass 0.30 kg along a smooth, level lunch counter. What are the magnitude and direction of the friction force acting on it
a 5kg block of uniform density with a length of 20 cm and a height of 8 cm is balanced on two points one 2 cm from the
A cylindrical tube is closed at both ends by glass plates 10.0mm thick. if the inside length of the tube is 7.5 cm, what is the total optic path length between the outer surfaces
christian ramirez a small 0.12kg metal ball is tied to a very light sting 0.80m long to form a pendulum that is then
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