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A baseball (mass 0.14 kg, radius 3.7 cm) is spinning with an angular velocity of 55 rad/s. If the baseball has a linear speed of 42 m/s, what is the ratio of its rotational and translational kinetic energies?
A 42 kg pole vaulter running at 11 m/s vaults over the bar. Her speed while she is above the bar is 0.7 m/s. Avoid air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.
A sound wave from a siren has an intensity of 88.8 W/m2 at a certain point, What is the intensity level of the sound wave due to the ambulance
Using the idea of a dozen as an example again, if you have 2 dozen blocks and their total mass is 48 kg, What is the mass of a single molecule
A block with mass m1 = 8.8 kg is on an incline with an angle ? = 39.0° with respect to the horizontal. What is the minimum spring constant of the spring to keep the block from sliding
n = 3.24 mol of Hydrogen gas is initially at T = 357 K temperature and pi = 2.79×105 Pa pressure. The gas is then reversibly and isothermally compressed until its pressure reaches pf = 7.62×105 Pa. How much work did the external force perform
Two point particles with masses m and 4m are placed along the x-axis at x = - a, Calculate the gravitational field and gravitational potential at x = 0
A solid cylinder with a radius of 25 cm and a mass of 4.4 kg is rotating counterclockwise with an angular speed of 0.5 revoultions per second just above a flat surface. What torque due to friction is exerted on the cylinder
A 50.0-g sample of a material at 80.0 degree C is dropped into a calorimeter containing 100.0g of water at 20.0 degree C. What is the specific heat of the material
A potential energy function for a two-dimensional force is of the form U = 3.89x3 y - 5.96x. Calculate the force that acts at the point (1.28m,1.17m). Enter the x-component first and then the y-component.
In a two-slit experiment, the third bright fringe away from the central fringe is observed at an angle 7 degrees. what is the distance between the two slits
A 386 g object is attached to a spring andexecutes simple harmonic motion with a period of 0.240 s. If the total energy of the system is5.48 J. Find the maximum speed of the object
At the bottom of the sea a small hole developed at the body of a submarine. at what speed the water is entering into submarine
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