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You swing one yo-yo around your head in a horizontal circle. Then you swing another yo-yo with twice the mass of the first one, but you don't change the length of the string or the period. How do the tensions in the strings differ?
The energy gap in silicon is 1.1eV. The average electron effective mass is 0.31m, where m is free electron mass. Calculate the electron concentration in the conduction band of silicon at T=300K
on june 14 2005 asafa powell of jamaica set a worlds record for the 100-m dash with a time t 9.77 s. assuming he
A cannon ball (m=.7 kg) traveling at 200m/s hits and is impeded into a 400 kg car. If the car was initially at rest, what will be its velocity after the impact
A cameraman on a pickup truck is traveling westward at 18 km/h while he videotapes a cheetah that is moving westward 32 km/h faster than the truck. find its acceleration from the prespective of the cameraman
How much work is done by a 86.5 kg man running up a flight of stairs 20.0m long in 4.25 seconds, how much power does the man exert while running
solve 14 and 15 and 11-13- 10- 9- 2 -6- step by step without jumping and explain more because i wanna
A10.0 kg object sitting on a 30o slope is given a push by a horizontal force of 50.0 N for 2.50 s. How far uphill will the object be able to reach along the slope (no friction)
A 20-kg object on a frictionless horizontal surface oscillating on a spring that has a force constant equal to 3.5 kN/m has a total mechanical energy of 0.60 J. (a) What is the amplitude of the motion?
The scalar product of A and B is 40m2 Vector A has a magnitude of 7m and direction 28 degrees west of south. what is the magnitude of B
In a collision between an alpha particle and an electron, what general considerations limit the momentum transfer
The acceleration of gravity near the surface of the moon has about on-sixth the magnitude that it does on earth. How long would satellite orbiting just above the moons surface
a 4.8 kg dog stands on an 19 kg flatboat and is 6.1 m from the shore. he walks 2.2 m on the boat toward shore and then
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