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A spring stretches by 0.0240 m when a 3.40-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 4.65 Hz?
A dock worker applies a constant force of 80.0 N to a block of ice on a smooth horizontal floor. What is the mass of the block of ice
When you drop a rock into a well you hear the splash 1.0 seconds later. How deep is the well
As part of a safety investigation, two 1200 {rm kg} cars traveling at 24 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.80 {rm s} to stop, and (b) car that hits a..
a thin lens of focal length 30.0 cm and is used to form an image that is twice the size of the object. Find the object position
Assume that the air temperature is 20C and that no wind is blowing. How much time would elapse if the wind were blowing toward the observer at 33.0Km/h from where the rail was struck?
A wind turbine with a rotor diameter of 50 m is rated at Y kW at a hub height wind speed of m/s. It has a cut-in wind speed of m/s and a cut-out speed of m/s.
The maximum current in a superconducting solenoid can be as large as 3.51 kA. what is the magnitude of the magnetic field it produces
We have pumped 20 bbls of fluid from the cement unit. But we think that we should have already achieved 425 psi at the unit. We are rigged up to do F.I.T and have already pressure tested all surface lines and there are no leaks.
Suppose you aim to suspend in air a perfectly reflecting 4cmx4cm surface, with mass m = 0.00045kg. What intensity of light must you shine on it
A car moves in a flat, circular path of radius R on a surface with a coefficient of kinetic friction of 0.25 and a coefficient of static friction of 0.35. How long does it take the car to complete one orbit
A 80.0 Hz generator with an rms voltage of 150 V is connected in series to a 3.20 k ohm resistor and a 3.50 micro farad capacitor. Find the phase angle between the current and the voltage
A rope is used to pull a 3.57 kg block at constant speed 3.58 m along a horizontal floor. What is the work done by the rope's force
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