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An incoming 0.14 kilogram baseball has a speed of 45 m/s. The batter hits the ball, giving it a speed of 60 m/s. If the contact time is 0.040 second, find what is the average force of the bat on the ball?
A 0.100 kg block is suspended from a spring. When a small pebble of mass 40 g is placed on the block, What is the net force on the pebble when it is at a point of maximum upward displacement
A charge of -3mc is fixed in a place.a particle with mass=7.20*10-3Kg and charge= -8mc is fired toward the fixed charge from initial distance=.450m.if the particles initial speedis 65m/s,how close will the particle get to the fxed charge? you may n..
The plates of a capacitor are separated by 0.0050 m. The capacitor is charged by a potential difference of 5.0 V and then disconnected. Now you separate the plates to a distance of 0.015 m. What is the new potential difference between the plates?
a single mass m1 3.6 kg hangs from a spring in a motionless elevator. the spring constant is k 294.0 nm. now three
two plates of area 50.0 cm2 are separated by a distance of 0.0370 cm. if a charge separation of 0.0340 ?c is placed on
A projectile is fired up into the air at a speed of 199 m/s at an angle of 17° relative to the horizontal. Determine the maximum height the projectile will reach
A meterstick is moving by an observer in a direction parallel to its length. The speed of the meterstick is .49c. What is its length in the reference frame of the observer
A bike wheel (I=m*(r^2)) is spinning at 20 rad/s, at which point a 100 g rat jumps onto the wheel, what is the mass of the bike wheel
Two lenses were 10 cm apart. An object was 30 cm from the first converging lens. The second diverging lens has a focal length of 8 cm. Find the focal length of the first converging lens
A converging lens with a focal length of 13.7 cm and a diverging lens are placed 24.0 cm apart, with the converging lens on the left. What is the height of the final image
A woman is riding a Jet Ski at a speed of 25 m/s and notices a seawall straight ahead. what is the minimum distance from the seawall
A hollow non-conductiong sphere has a uniform charge density ?. The inner and outer radius of the sphere are r1 and r2m respectively. What is the total charge of this sphere
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