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Wrongly called for a foul an angry basketball player throws the ball straight down to the floor.if the ball bounces straight up and returns to the floor 2.8s after first striking it, what was the ball's greatest height above the floor?
A parallel-plate capacitor has a capacitance of 200 pF, a plate area of 680 cm2, and a mica dielectric (? = 5.4) completely filling the space between the plates. At 64 V potential difference, calculate (b) the magnitude of the free charge on the ..
A wire carries a steady current of 2.60 A. A straight section of the wire is 0.750 m long and lies along the y axis within a uniform magnetic field, = 1.40 T. what is the magnetic force on the section of wire
If the mass of a wheel is increased by a factor of 6, by what factor is the moment of inertia increased
In a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves on a circle. Find the magnitude of the total acceleration (centripetal plus tangential) ..
A long, straight wire carrying a current of 316 A is placed in a uniform magnetic field that has a magnitude of 7.42 × 10-3 T. Find a point in space where the net magnetic field is zero
An electromagnetic wave has an electric field amplitude of 325 V/m. What is the maximum magnitude of the Poynting vector of this wave
The gravitational force between two masses M and m separated by a distance r is 40 N. What is the new force when this distance is halved?
A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. How long does it take the red ball to reach the ground
The loop shown below is immersed in a uniform magnetic field that points into the page and stretches across the entire page.
A projectile is launched from a cannon at ground level at an angle of 62.0 degrees elevation and has a muzzle velocity of 481 m/s. Explain how many seconds after it is fired does it reach max height?
A cat drops from a shelf 3.7ft above the floor and lands on all four feet. His legs bring him to a stop in a distance of 12 cm . Calculate his speed when he first touches the floor (ignore air resistance). Calculate how long it takes him to stop.
A 0.385kg block is attached to a horizontal spring and that oscillates in simple harmonic motion with a period of 0.303s. What is the force constant of the spring
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