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A cart for hauling ore out of a gold mine has a mass of 445 kg, including its load. Find the work that the force of gravity performs on the cart
A charge of -3.0 nC is at the origin and a second charge of 15.0 nC is at x = 7.00 m. Find the magnitude and direction of the electric field
An infinite line of positive charge lies along the y axis, with charge density 1.90 microcoulombs/m. Calculate the torque about the midpoint of the dipole
A projectile is fired with an initial speed of 113 m/s at an angle of 60 degrees above the horizontal, from the top of a cliff which is 49.0 meters high. determine time to reach maximum height
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 4.60 cm into the river
For safety in climbing, a mountaineer uses a nylon rope that is 60 m long and 1.0 cm in diameter. Find its Young's modulus
Starting from rest, object 1 is subject to a 10Nforce for 2.0 s. Object 2, with twice the mass, is subject to a 15N force for 3.0 s
A nearsighted sheriff fires at a cattle rustler with his trusty six-shooter. Fortunately for the rustler, the bullet misses him and penetrates the town water tank, causing a leak. how far above the
he electric field in a particular region of space is found to be uniform, What is the change in electric potential energy of a charge q = 6.7 uC if it is moved from (x, y) = (20 cm, 45 cm) to (5 cm,
Two identical particles, each with a mass of 4.5 mg and a charge of 30 nC, are moving directly toward each other with equal speeds of 4.0 at an instant, How far apart will they be when closest to on
A transverse wave on a string is described by the wave functionA transverse wave on a string is described by the wave function y=(0.120m)sin((pi*x)/8 +4*pi*t).a), Determine the transverse speed and
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. How deep is the well
Calculate the absoute pressure at the bottom of a fresh-water lake at a depth of 28.9 m. Assume the density of the water is 1.00x10^3 kg/m^3 and the air above is at a pressure of 101.3 kPa
Water flowing in a horizontal pipe is at a pressure of 1.55 105 Pa at a point where its cross-sectional area is 6.00 m2. Find the water's speed in the wider pipe
A plank 2.00 cm thick and 16.9 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 t
Calculate the mass of a solid gold rectanglar bar that has dimensions lwh = 4.20 cm x 12.0 cm x 30.0 cm. (the density of gold is 19.3x10^3 kg/m^3.)
Calculate the pressure on the top lid of a chest buried under 3.65 meters of mud with density 1.75 103 kg/m3 at the bottom of a 11.5-m-deep lake
It's nighttime, and you've dropped your goggles into a swimming pool that is 3.0m deep. If you hold a laser pointer 1.2m above the edge of the pool, How far are the goggles from the edge of the pool
A listener increases his distance from a sound source by a factor of 3.03. what is the change in the sound intensity level in dB
An aluminum wire having a cross-sectional area equal to 3.20X10^-6 m^2 carries a current of 6.50 A. Find the drift speed of the electrons in the wire
Light of wavelength 5.0*10^-7 m in air is incident normally (perpendicular) on a doubled slit. The distance between the slit is 4.0*10^-4 m, Caculate the line density in slits/mm of the diffraction
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 53.90 diopters, How far is the blackboard from her eyes
A small package rests on the horizontal dashboard of a car. If %u03BCs = 0.327, what is the minimum acceleration of the car
A man is racing with his son has half the kinetic energy of the son, who has half the mass of the father. What is the original speed of the Man
A 75 kg person travels in a car at 50. mph over a hill. The radius of curvature at the peak of the hill is 90. m. What is the normal force of the seat pushing up on her