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Problem:
A spring of constant k = 100 N/m hangs at its natural length from a fixed stand. A mass of 3 kg is hung on the end of the spring, and slowly let down until the spring and mass hang at their new equilibrium position.
The spring is now pulled down an additional distance x and released from rest. What is the potential energy in the spring at this distance?
a 1.5 kg ball falls onto a floor. just before it strikes the floor its velocity is 12 m/s. the ball bounces up with a velocity of 10 m/s. find the impulse on the ball
An electron is accelerated from rest through a potential difference of 500V along the x axis then injected into a uniform magnetic field pointing into the plane of the paper. What is the radius of the electron's orbit in the magnetic field
Calculate Escape Velocity for Mars (mass = 6.42 x 1023 kg, radius = 3397km). Is it easier to launch a rocket from Mars than the Earth
A proton and an electron are moving due east in a constant electric field that also points due east. Determine the magnitude of the acceleration of the proton and the electron
Tuning fork 1 has a frequency of 256 Hz and tuning fork 2 has a frequency of 260 Hz, When tuning fork 3 is played along with tuning fork 1 a beat frequency of 2 Hz is heard. When tuning fork 3 is played along with tuning fork 2 a beat frequency of..
Find the electric and magnetic field amplitudes in an electromagnetic wave that has an average energy density of 2.7 J/m3. electric field
a lovestick young las wants to t hrow a bag of candy and love notesinto the open window of his girl friend's bedroom 10 meters above. at what velocity should he throw the bag
A 4 kg particle moves at a constant speed of 2.5 m/s around acircle of radius 2 m. What is the angular speed of the particle
A street lamp weighs 150N. It is supported by two wires thatform an angle of 120 degrees with each other.The tensions in thewires are equal. find the tension in each wire supporting the street lamp
A copper wire has a resistance of 0.575 ohm at 20.0°C, and an iron wire has a resistance of 0.595 ohm at the same temperature. At what temperature are their resistances equal
A rectangular loop of wire has dimensions 0.5m by 0.3m. The loop is pivoted at x axis and lies in the xy plane. A uniform magnetic field of magnitude 1.5 T is directed at an angle of 40° with respect to the y axis with field lines parallel to the ..
You see the boy next door trying to push a crate down the sidewalk. He can barely keep it moving, and his feet occasionally slip. Estimate the mass of the crate
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