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A spring with spring constant 15.0 N/m hangs from the ceiling. A 500 gram ball is attached to the spring and allowed to come to rest. It is then pulled down 6.0 centimeter and released. Find the time constant τ if the ball amplitude has decreased to 3.0 centimeter after 30 oscillations?
A bare helium nucleus has two positive charges and a mass of 6.64 multiplied by 10-27 kg. What voltage would be needed to obtain this energy
A very long wire generates a magnetic field of 9x 10-7 at a distance of 3 mm. What is the magnitude of the current
a helium nucleus has radius rhe 1.9 fm mass m 6.6 times 10-27 kg and charge 2e. a gold nucleus has charge 87e and
Two sinusoidal waves of the same frequency travel in the same direction along a string. what is the amplitude (in cm) of the resultant wave
A small hollow tube is glued to a speaker in a vertical manner. The speaker is set to play a single tone such that it vibrates vertically with simple harmonic motion. Find an expression for the frequency at which rattling begins
a 330 kg piano is pushed 3.6 m up a 28 degree incline by three men starting at rest at the bottom of the hill and ending at 41 cm/s. What is the net work done on the piano
What are room temperature (68 deg F) and body temperature (98.6 deg F) on the Celsius scale? Choose one answer. a. Room Temp = 25 deg C and body Temp = 37 deg C b. Room Temp = 20 deg C and body Temp = 30 deg C c. Room Temp = 20 deg C and body Temp = ..
Two round rods, one steel and the other copper, are joined end to end. Each rod is 0.760 long and 1.35 in diameter, For the steel rod, what is the elongation
a spaceship leaves earth event a travels to alpha centauri which is 4.4 y distance away and then returns event b
A 124-? resistor and a 163-? resistor are both connected in parallel across a power supply, what is the exact potential drop (in V) across the 163-? resistor
A contact lens is made up of a material with index of refraction 1.6. What must the radius of curvature of the outer (convex) surface be in order for the lens to have a focal length of 50 cm
at 20.0degc a mainly silicon resistor has a resistance of 365 o and a tungsten resistor has a resistance of 752 o. at
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