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A hammer thrower accelerates the hammer (mass = 7.30 kg) from rest within four full turns (revolutions) and releases it at a speed of 28.0 m/s. Assuming a uniform rate of increase in angular velocity and a radius of 1.20 m, calculate the following answers.
a) ??The angular acceleration (in rad/s^2)
b) The (linear) tangential acceleration (in m/s^2).
c) The angle of this force with respect to the radius of the circular motion (in degrees)
A horizontal magnetic field of 1.0 x 10^-4 T is at an angle of 30 degrees to the direction of the current in a straight wire 75 cm long. what is the magnitude of the force on the wire
A 2 kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of the net force acting on the ball while it is traveling upward?
Two guitarists attempt to play the same note of wavelength 6.50cm at the same time, What is the frequency of the beat these musicians hear when they play together
A flywheel has a constant angular deceleration of -2.01 rad/s^2. Find the time required for the flywheel to come to rest
After reaching its maximum height, the ball moves into the hoop on its downward path, at 3.05 m above the ground. Using the principle of energy conservation,
Diffraction studies involving X-rays, electrons or neutrons give information about the crystallographic properties of solids. Compare these three techniques with reference to particle energies and types of information that can be obtained. Which ..
Assume all temperatures to be exact, and neglect significant figures for small changes in dimension. An athlete has a large lung capacity, 7.4. how many molecules of air are in the athlete's lungs
A student is looking at a monochromatic light source and is looking for the third bright fringe. At what angle should the student look for the third bright fringe
We can roughly model a gymnastic tumbler as a uniform solid cylinder of mass 72.0kg and diameter 1.20m. What percent of his total kinetic energy is rotational
A small drop of water measuring 0.6 mm in diameter, how many extra electrons are on the drop of water
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. What stopping potential would be observed when using light from a red lamp
A 31000- kg railroad car with an open top rolls along a straight track with a speed of 4.91 km/h. It passes under a water fall that pours water straight into the car at a rate of 600 kg/s How much force is necessary to keep the car traveling at const..
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