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A 28.9-g bullet is fired from a rifle. It takes 3.86 × 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 769 m/s. Assuming that the acceleration of the bullet is constant, find the average net force exerted on the bullet.
A circular coil of 4 turns and a diameter of 30.0 cm is oriented in a vertical plane with its axis perpendicular to the horizontal component of the Earth's magnetic field. find the horizontal component of the Earths magnetic field
A long solenoid has 80 turns/cm and carries current i. An electron moves within the solenoid in the circle of radius 3.10 cm perpendicular to the solenoid axis. The speed of an electron is 0.0330c (c = speed of light). Find current i.
A series of small machine components being moved by a conveyor belt passes over a 140-mm-radius idler pulley. At the instant shown, the angular velocity of the idler pulley is 5 rad/s clockwise. If the total acceleration of point B is 2400 mm/s2, wha..
As a car approaching you driver lays on the horn. The horn has an actual frequency of 350Hz but you hear the horn as 390 Hz. What is the speed of the car.
A motorist drives south at 22 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 30 m/s for 1.00 min. For this 6.40 min trip, find out the following values.
Light of wavelength 630 nm passes through a grating and then onto a screen located several meters from the grating. Determine the wavelength of the second source
A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end.
Saturn's moon Titan is the largest moon in the solar system. Its mostly-nitrogen atmosphere exerts a pressure of 1.60×105 Pa at the moon's surface.
An ancient manuscript reveals that a owner of a vineyard in Rome held 2 selions of plowed land plus a livestock area of 20 perches by 5 perches
A proton (1e) and an alpha particle charge = 2e, mass = 6.64 x10^-27 kg are initially at rest, separated by 4.00 x 10^-15 m. Find the speeds of the proton and alpha particle
The spring of the pressure gauge shown in has a force constant of 1 400N/m, and the piston has a diameter of 1.60cm. When the gauge is lowered into water in a lake, what change in depth causes piston to move in by 0.850cm.
A 58-kg skater sliding due northeast at an initial speed of 1.5 m/s runs into a snow bank and comes to rest in a time interval of 0.38 s, What is change in the kinetic energy of the skater
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