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An iron bar of mass, 0.81 kg, slides down a frictionless incline 0.39 m high. At the bottom of the incline it collides and sticks to a magnet of mass, 0.87 kg. What is the speed of the combined masses after collision.
An airplane flies eastward and accelerates uniformly. At one position along its path it has a velocity of 26.5 m/s. find the airplane\'s acceleration
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 water storage tower, is filled with freshwater to a depth of 6.4m. It has a circular basin with and Are of 30m^2. What is the weight(force) of water the basin supports
q1. a block with a mass of 20 g is pulled at a constant speed across a horizontal tabletop with a spring scale. the
A 5.00-kW motor is used to pull a 20.0-kg crate up a 15.0°-incline of length 4.00 m. At what average velocity can the motor move the crate up the incline
Calculate the resistance per unit length of a nichrome wire, which has a radius of 0.182 mm. The resistivity of nichrome is 1.5 × 10^?6 ? · m
Two point charges are on the y axis. A 3.80-µC charge is located at y = 1.25 cm, and a -2.18-µC charge is located at y = -1.80 cm. Find the total electric potential at the origin
A 5.00 X 10-2 kg mass with a charge of +0.75 mC is hung by a thin insulated thread. A charge of -0.9 mC is held 0.15 meters directly to right so that the thread makes an angle q with the vertical. What is the angle q and the tension in the string.
An Earth satellite moves in a circular orbit 644 km above Earth's surface with a period of 97.40 min, What are the magnitude of the centripetal acceleration of the satellite
You are traveling on an airplane, The velocity of the plane with respect to the air is 190 m/s due east, What is the speed of the plane with respect to the ground
a wheel of diameter 144 cm has an axle of diamter 15 cm. a force of 150N is exerted along the rim of the wheel. What force should be applied to the outside of the axle
In an eye that is farsighted, the eye focuses parallel rays so that the image would form behind the retina. In an eye that is nearsighted, the image is formed in front of the retina.
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