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A block is attached to the end of a horizontal ideal spring and rests on a frictionless surface. The other end of the spring is attached to a wall. The block is pulled away from the spring's unstrained position by a distance x0 = 0.050 m and released from rest. The period of the subsequent periodic motion of the block is 0.64 s.
At what distance from the unstrained position is the speed of the block equal to 0.30 m/s?
aa projectile is fired from a gun that is 69.0m above flat ground emerging from the gun with unknown horizontal speed.
A block of unknown mass is attached to a spring of spring constant 7.9 N/m and undergoes simple harmonic motion with an amplitude of 13.2 cm. Calculate the mass of the block
Determine the number of moles of helium in the balloon and Determine the mass of helium needed to inflate the balloon to these values
On a humid day, an electric field of 2.00 * 10^4 N/C is enough to produce sparks about an inch long. Suppose that in your physics class, use Coulomb's law to calculate the electric field at the surface of the sphere
In a photoelectric experiment, light with a wavelength of 250 nm hits a certain material. When a negative potential of 0.48 volt is applied there is no more current while a saturation current Is is recorded at positive voltages.
You hold a ruler that has a charge on its tip 6 cm above a small piece of tissue paper to see if it can be picked up. find the minimum charge required to pick up the tissue paper
A beam of unpolarized light of intensity26.0 W/m2 passes during a polarizing sheet. What is the electric field amplitude of the transmitted beam?
Most of the motion generated by joints in the human body are examples of levers. what force is exerted by the biceps muscle
A rocket has an initial mass of 28,000 kg, of which 20 percent is the payload. It burns fuel at a rate of 185 kg/s and exhausts its gas at a relative speed of 1.8 km/s.
A 0.534-nm photon collides with a stationary electron. After the collision the electron moves forward and the photon recoils backwards. Find the momentum of the electron.
Consider a uniformly charged rod of length L and charge Q. Find an expression for the electric potential
The sun's rays are focused, using a lens as a "burning glass." Obtain the intensity of visible light in the spot if the intensity of visible light striking the lens is 728 W/m2
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