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In an isometric exercise a person places a hand on a scale and pushes vertically downward, keeping the forearm horizontal. This is possible because the triceps muscle applies an upward force perpendicular to the arm, because the figure indicates. The forearm weighs 19.3 N and has a center of gravity as indicated. The scale registers 130 N. Decide the magnitude of.
Assume you are a medieval knight attacking a castle with a canon. The ball leaves the cannon with a speed of 40.9 m/s. What is the time of flight of the cannon ball
A horizontal rectangular surface has dimensions 2.90cm by 3.40cm and is in a uniform magnetic field that is directed at an angle of 26.5 degrees above the horizontal. What must the magnitude of the magnetic field be in order to produce a flux of 4.00..
An experiment you're designing needs a gas with = 1.60. You recall from your physics class that no individual gas has this value, but it occurs to you that you could produce a gas with = 1.60 by mixing together a monatomic gas and a diatomic gas.
A boy shoots a rock with initial velocity of 40 m/s straight up from his slingshot. He quickly reloads and shoots another rock in the same way 4.0 s later.
If the coefficient of static friction between the coffee cup and the roof of the car is 0.29, what is the maximum acceleration the car can have without causing the cup to slide? Ignore the effects of air resistance
The period of a macroscopic pendulum made with a mass of 10 g suspended from a massless string 50 cm long is 1.42 s. Compute the ground-state (zero-point) energy
The linear momentum of a 1300 kg carincreased by 6.30×103 kg m/s in13.7 s. What is the magnitude of the constant force that accelerated the car? By how much did the speed of the car increase?
An electron with velocity v = (300, 200, 0) m/s moves in a region where the magnetic feild is B = (0, 1.2, 2.8) x 10^-4 T. Determine the force on the electron
A 2.0 cm tall candle flame is 1.8 cm from a wall. You happen to have a lens with a focal length of 36 cm . 1. How many places can you put the lens
How many revolutions will the car have gone through.
A sound pulse has a power of 948.5 watts. find the intensity of the sound at the time of observation
A cube of ice is taken from the freezer at -8.0 and placed in a 113 aluminium calorimeter filled with 306 of water at room temperature of 20.0. The final situation is observed to be all water at 15.0.
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