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A pole vaulter is running with a 2.5 kg carbon pole that is 4.5 meters long, holding it level to the ground. Suppose the right hand grips the pole at 0.25 meters from the end, and the left hand at 0.50 meters from the end. Calculate the forces that must be exerted by each of the two hands.
What is the maximum speed with which a 1060kg car can round a turn of radius 75m on a flat road if the coefficient of static friction between tires and road is 0.80.
Calculate the acceleration of the object for an elapsed time of t=1s. use the formula: x-x0=v0t+1/2at^2 x=4.5 m v0=6.0m/s x0=-3.7m
compute the electric flux through a rectangular plane.
Some GRIN material is made in the form of a doughnut. The inside diameter (the diameter of the hole in the doughnut) is 34 cm, What should be the highest, and the lowest refractive index of the material
A duck has a mass of 2.6 kg. As the duck paddles, a force of 0.11 N acts on it in a direction due east. In addition, the current of the water exerts the force of 0.12 N in a direction of 44° south of east. When these forces begin to act, the velocity..
guess the force between a proton and an electron at the Bohr radius of 0.5Å (1 Å=10-10 m). The magnitude of the charge of an electron, as well as a proton, is 1.6·10-19 C.
Find out the angular velocity at the beginning of the 4.60 interval; the angular acceleration of the flywheel.
An ocean liner sailing at 43.40 m/s is caught in a current flowing 11.20 m/s at 24.7 degrees east of south what is the direction (angle) of the overall speed of ocean liner.
An object of mass 5kg is moving with an momentum of 50 kg m/s. What is the speed of the object? What is the magnitude of the momentum of the object
What is corresponding free energy change
The 2.00 kg object below is released from rest at the height of 5.0 m on a curved frictionless ramp. At the foot of the ramp is a spring of force constant k = 450 N/m. The object slides down the ramp and into the spring, compressing it a distance x b..
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3.2 MJ, What is the moment of inertia of the flywheel
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