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A ball with a mass of .25 kg is placed on top of a spring with a spring constant of 800. N/m. If the spring is compressed straight down .200 m from its equilibrium position:
A. Determine the elastic potential energy of the ball while it is on the compressed spring.
B. Determine how high the ball will launch in to the air when the spring is released.
C. Determine the speed of the ball when it is 2.0 m above its initial position on top of the spring.
D. If the ball launches to a maximum height of 4.2 m, how much work was done by non-conservative forces between launch and the apex?
write down Newton's Second Law for the velocity of the cube.
An electric field is set up between two parallel plates, each of area 2.2 m2, by putting 1.0 C charge on one plate and the -1.0 C charge on the other. The plates are separated by 4.0 mm. What is the magnitude of the electric field between the plates ..
A hovercraft of mass 69.0 kg can move on a horizontal surface, the x-y plane. How much work is done on the hovercraft by the force during this time
Consider laser eye surgery, in which laser light with a wavelength of 426 nm at a power output of 1.6 W is used to reattach a detached retina. how many photons are emitted by the laser
Lead has a latent heat of fusion of 2.32x104 J/kg, a specific heat of 128 J/(kg K), and a melting point of 228°C. Calculate heat needed to melt the bullet
The leg and cast weigh 177N (w1). Find out the weight w2 and the angle α required so that no force is exerted on the hip joint by the leg plus cast.
A Histogram shows that the mean of rain in the area has increased over the last 5 years. What is the probability that the mean would be higher this year than in the previous 5.
A carbon dioxide laser emits a sinusoidal electromagnetic wave that travels in vacuum in the negative x-direction, Write vector equations for E and B as functions of time and position
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 2 state, What is the energy of the Hydrogen atom
A researcher is trying to shoot a tranquilizer dart at a 1.8-m-tall rhino that is 150m away. What is the magnification of the telescope
A sanding disk with rotational inertia 5.4 x 10-3 kg·m2 is linked to an electric drill whose motor delivers a torque of magnitude 10 N·m about the central axis of the disk. About that axis and with torque applied for 72 ms, what is the magnitude o..
In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, a slight push makes the block move at a constant speed along the plank. If the mass of a wooden block is 500 gram..
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