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Setting a world record in a 100 m race, Maggie and Judy cross the finish line in a dead heat, both taking 9.0 s. Accelerating uniformly, Maggie took 2.00 s and Judy 2.40 s to attain maximum speed, which they maintained for the rest of the race.
a) What was the acceleration of each sprinter?
b) What were their respective maximum speeds?
The electric potential energy stored in the capacitor of a defibrillator is 68 J, What is the potential difference across the capacitor plates
a wooden block of volume 5.231e-4 m3 floats in water and a small steel object of mass m is placed on top of the block.
A circular saw blade of diameter 0.175m starts from rest. In a time interval of 5.60s it accelerates with constant angular acceleration to an angular velocity of 140rad/s
each of the plates of a parallel plate capacitor has an area of 10.6cm2 and a plate separaton difference of 2mm.
The length of a string is 456 cm. It is held ?xed at each end. The string vibrates in three sections; i.e., the string has three antinodes and string vibrates at 180 Hz.
An important factor in many biochemical cell processes is the potential difference across a cell membrane. The inside of a cellis at a lower electric potential than the outside, with a potentialdifference of 0.080 V between them.
A blu-ray disc has a mass of 20 g and is 12 cm in diameter. The fastest drives can spin the disc at 10000 RPM after uniformly accelerating it for 1 s. Find the net torque on the disc
Two soccer players start from rest, 47 m apart. They run directly toward each other, both players accelerating. At the instant they collide, how far has the first player run
A 0.70 kg ball is moving horizontally with a speed of 7.7 m/s when it strikes a vertical wall. What is the magnitude of the impulse of the ball
An isolated hollow spherical conducting shell has a charge of 10^-6 C. In some manner, a point charge of 3*10^-6 C is placed inside the cavity of the shell,find the charge on the inner surface of the shell
a globular cluster at its farthest point from the galactic center is at a distance of 104 pc.what is its period of
a vertical tube is closed at one end and open to air at the other end. the air pressure is 1.01 times 105 pa. the tube
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