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An object moving in simple harmonic motion has an amplitude of0.03m and a maximum acceleration of 55m/s^2. What is the frequency of the system?
The light from a distant star takes 252 years to reach the earth. How far away is the star from the earth
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling pentane (36.1°C). The separate pressures are 0.349 atm and 1.442 atm. Hint: Use the linear relationship P = A + BT, where A and B ..
Find the drift velocity of conduction electrons in a gold wire of diameter 2.88 mm when a current of 0.123 A flows in it
A 430 gram rock is whirled on the end of a string 45 cm long which will break under a tension of 22 N. What is the radius of the circle of motion
A tire is filled with air at 15°C to a gauge pressure of210kPa. If the tire reaches a temperature of38°C, what fraction of the original air must be removed
Block M=70N and block m=35N are connected by a string as shown. If the pulley is massless and the surface is frictionless, the magnitude of the acceleration of the 35N block is block is:
The low range of frequencies used for medical applications is about 1,000,000 Hz. What is the wavelength of this frequency in air
A person works in a room for 4 hours with an activity of 3000 Bq/cubic meter of strontium chloride suspended in the air. Estimate the CEDE using the DAC. Calculate the CDEs to red bone marrow and the bone surfaces.
Suppose you take a 2.0×10^2ohm resistor and a 0.40 H inductor and make a series circuit with a voltage source that has voltage amplitude 30 V and an angular frequency of 2.5×102 rad/s. What are the voltage amplitudes across the resistor and across ..
If a constant force of 416 N acts in the direction opposite to the body's motion, how long must the force act to bring the body to rest
A low speed wind tunnel has an inlet cross sectional area of 2m2 and a test cross sectional area of 0.5m2. What is the inlet velocity
A window air conditioner unit absorbs 9.85 104 J of heat per minute from the room being cooled and in the same time period deposits 1.47 105 J of heat into the outside air. What is the energy efficiency rating of the unit
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