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A man doing a chin-up weighs 665 Newton exclusive of the arms. During the first 30.0 centimeter of the lift, each arm exerts an upward force of 355 Newton on the torso. If the upward movement starts from rest, find the man's velocity at this point?
A square with sides of length 2m is perpendicular to a magnetic field of strength 10 T. If the square is rotated by 60 degrees, what is the change in magnetic flux through the square
a sodium ion na is neutralized by capturing a 0.5 ev electron. what is the wavelength of the emitted radiation if the
An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has amass of 5.7×104 kg, and the force causes itsspeed to change from 7400 to 5900 m/s. (a) What isthe work done by the..
A 60.0 g bullet is fired from a muzzle velocity of 525 m/s from a gun with mass 4.50 kg and a barrel length of 55.0 cm, Find the bullet's momentum as it leaves the barrel
What is wavelength of the X-ray photon
Your roommate is working on his bicycle and has the bike upside down. He spins the 66.0cm -diameter wheel, Find the pebbles speed and acceleration
A hand grenade is thrown with a speed of v0 30 m/s, and a 60 degree angle with x-axis, just prior to exploding. It breaks into two pieces of equal mass after the explosion. One piece has a final velocity of 40 m/s along x. Find the velocity of t..
Two skaters each of mass 50 kg approach each other along prallel paths separated by 3 m. describe quantitativley the motion of the skaters after they have become connected by the pole
Paul is what most people consider a "jock." He is the captain of both the football and wrestling team and he also plays hockey. Upon entering Mrs. Title's class she figured that he would not take course seriously nor would he excel in class. She p..
A laser with wavelength d/8 is shining light on a double slit with slit separation 0.450mm. What is the wavelength of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser
a 39 ohm resistor is connectes to a battery, a voltmeter reads 9.8 V. when the resistor is repaced with a 9.1 ohm resister. the voltmeter reading drops to 8.0 V.
a boeing 747-8 with wingspan of 65.5 m is cruising at 289 m/s over northern canada, What is the potential difference between the tips of the wings
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