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A 5.00-kg partridge is suspended from a pear tree by an ideal spring of negligible mass. When the partridge is pulled down 0.100 m below it equilibrium position and released, it vibrates with a period of 4.20 s. a) What is its speed as it passes through the equilibrium position? b) what it is acceleration when it is 0.050 m above the equilibrium position? c)When it is moving upward, how much time is required for it to move from a point 0.050m below its equilibrium position to a point 0.050 m above it? d) The motion of the partridge is stopped, and then it is removed from the spring. How much does the spring shorten?
Two horses pull a large crate of negligible mass at constant speed across a barn floor by means of two light steel cables. What is the work done by each horse
A disk shaped grindstone of mass 3.0 kg and radius 8 cm is spinning at 600 rpm. After the power is shut off the frictional torque brings the grindstone to rest in 10 s. ? What is the number of complete revolutions of the grindstone after the power is..
Unpolarized light with an intensity of 760 W / m2 is incident on a polarizer with an unknown axis. compute the angle between the axes of the polarizers
A 0.33kg block is located 0.2 m from the center of a turntable. The coefficient of static friction between block and surface of the turntable is 0.44.
An electron remains in an excited state of an atom for typically 10-8 s. What is the minimum uncertainty in the energy of the state
An electron is accelerated to speed of 1.5*10^8 m/s. at that speed, compare the relativistic results to classical results for , find the electron rest energy according to the relativistic laws
Calculate the rotational inertia of a wheel that has a kinetic energy of 24,400 J when rotating at 641 rev/min
A 7350 kg satellite has an elliptical orbit. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. Find the work done by the gravitational force when the satellite moves from the ap..
A tennis ball initially moves with a velocity of 28.0 m/s horizontally to the right. A tennisracket strikes the ball, giving it a velocity of 28.0 m/s to the left. Treat the collision aselastic and the ball and racket as particles ofmass 0.0580 kg..
At a certain point on Earth's surface in the southern hemisphere, the magnetic field has a magnitude of 5.1 10-5 T, find the magnitude and direction of the force on the muon
Given the angular speed omega, find out the radius R(omega) at which the mass rotates without moving toward or away from the origin. Determine the radius in terms of k, L, M, and omega.
A 0.060 kg tennis ball, moving with a speed of 5.50 m/s, has a head-on collision with a 0.090 kg ball initially moving in the same direction at a speed of 3.00 m/s
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