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The coefficient of static friction among Richard's hand and his tennis racket is 0.51. How hard must he squeeze if he wants to exert a force of 200 N along the longitudinal axis of the racket?
What is the maximum rate of rotation. A moving electron passes near the nucleus of a gold atom, which contains 79 protons and 118 neutrons. At a particular moment electron is a distance of 7.5 x10 ^9 m from the gold nucleus.
at a given instant a particle with a mass of 5.00 x 10-3 kg and a charge of 3.50 x 10-8 c has a velocity with a
a particle is thrown upwards from the ground. it experiences constant air resistance which produces a retardation of 2
an air bubble has a volume of 1.20 cm3 when it is released by a submarine 115 m below the surface of a lake. what is
An aluminum wire has a cross-sectional area of 2.70x 10^-6 m^2 and carries a current of 7.50 A. The mass density of aluminum is 2.70 g/cm^3. find the average speed of the electons in the wire.
Two equal charges Q are separated by a distance d. One of the charges is released and moves away from the other due to the force between them. When the moving charge is a distance 3d from the other charge, what is its kinetic energy?
A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 20 deg. above the horizontal
question1assume that the balls initial velocity was 45 above the horizontal and ignoring air resistance what did an
A 12.8 g bulletis fired horizontally into a 93 g woodenblock initially at rest on a horizontal surface. evaluate the speed of the bullet immediately before impact
Sound from the siren of an emergency vehicle has a frequency of 750.0 Hz and moves with a velocity of 343.0 m/s. What is the distance from one condensation to the next
question1a large flat block of mass 7m rests on a level smooth tabletop muk asymp 0. on top of it is a much smaller
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. The tracheae begin at the surface of the insect's body and p..
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