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A Superball is dropped from a height of 2.7 and rebounds off the floor to a height of 2.2 . If the ball is in contact with the floor for 0.70 , determine the direction of the ball's average acceleration due to the floor.(Downward or Upward) Determine the magnitude of the ball's average acceleration due to the floor. Express your answer using two significant figures.
Two coils are close to each other. The first coil carries a current given by I(t) = 4.70 e%u22120.025 0tsin(120%u03C0t), What is the mutual inductance of the coils
consider a system of two lenses. The first lens is a converging lens with a focal length f1=21.4 cm. compute is the image real or virtual
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 18.0cm , giving it a charge of -12.0?C. Find the electric field just inside the paint layer
A football is kicked straight up into the air; it hits the ground 3.8s s later, What was the greatest height reached by the ball, Assume it is kicked from ground level
When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). find the mass of the ball
The electron is heading at a 45 angle directly toward the wire when it is 50cm away; the electron reaches only as close as 1.0 cm, before being repelled away, always moving in the same plane. If the electron has an initail speed of 3.4 x 10^6 m/s,
Gas in a container is at a pressure of 1.1 atm and a volume of 8.0 m3. What is the work done by the gas if (a) it expands at constant pressure to twice its initial volume
A movie stuntwoman drops from a helicopter that is 29.0 above ground and is moving with a constant velocity whose components are 8.00 upward and 18.0 horizontal and toward south. You can ignore air resistance.Where on the ground (relative to the p..
A 130- baseball, moving along the axis with speed 35 , strikes a fence at a 45 angle and rebounds along axis with unchanged speed Give the - and - components of its change in momentum.
A step-down transformer is used for recharging the batteries of portable devices. determine the rms output voltage of the transformer
A source of AC voltage with a frequency of 60 Hz, Find the shortest time in seconds required for the voltage across the light bulb to reach 170 V
Suppose you pour water into a container until it reaches a depth of 18. What is the pressure at the bottom of the container
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