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To test the quality of a tennis ball, you drop it onto the floor from a height of 4.02 m. It rebounds to a height of 2.84 m. If the ball is in contact with the floor for 11.1 ms, what is its average acceleration during that contact?
A double-slit apparatus consists of two of slits separated by 0.25 mm with a screen 5.0 cm away. Calculate the wavelength of the light
instructions read the problems carefully and answer all the questions in each problem. you are allowed to use three a4
question1a rock is thrown from edge of the top of a 100-ft tall building at some unknown angle above the horizontal.
An elastic cord is 69 cm long when a weight of 57 N hangs from it but is 70 cm long when the weight of 75 N hangs from it. What is the "spring" constant k of this elastic cord.
A proton, q=1.60 x 10^19C moves 10.0 cm on a path parallel to the direction of a uniform electric field of strength 3.0 N/C What is the change in electric potential energy
A storage tank 31 m high is filled with pure water. Calculate the magnitude of the net force that acts on a square access hatch at the bottom of the tank that measures 0.6 m by 0.6 m
A worker pushes horizontally on a large crate with a force of 304 N and the crate is moved 4.4 m. How much work was done.
A baseball player runs 27.4meters from batter's box to first base,overruns first base by 3.0 meters,and then returns to first base. Compared to the total distance traveled by the player,magnitude of the players total displacement from the batters ..
A spherical mirror is to be used to fom an image 5 times as tall as the object on a screen positioned 1 meter from the mirror. Find the type of mirror
An ac generator producing 20 V (rms) at 200 rad/s is connected in series with a 50-%uF057 resistor, The rms voltage (in volts) across the capacitor is
A circular disk 0.3 in diameter, pivoted about a horizontal axis through its center , has a cord wrapped around its rim. what is the weight of the rod
A flight attendant pulls her 69N flight bag a distance of 246m along a level airport floor at a constant velocity. The force she exerts is 37N at an angle of 58° above the horizontal. Find the coefficient of kinetic friction between flight bag and..
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