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A sealed contained containing 4 mol of gas is squeezed, changingits volume from 0.020 m3 to 0.018 m3. During this process, thetemperature decreases by 9 K while the pressure increases by 450Pa. What was the original pressure and temperature of the gas in the container?
monochromatic light falls on a slit that is 3.10 10-3 mm wide. if the angle between the first dark fringes on either
A current of 15 A flows through an electric heater operating on 120 V. What is the heater's resistance? Compute the power consumption of the electric heater in kW? How much energy does it use in 600 min(10hrs)?
A runaway, 400-kg wagon enters a cornfield with a velocity of 12 m/s and eventually comes to rest. What work was done on the wagon in kJ
you find an unlabeled box of fine needles and want to determine how thick they are. a standard ruler wont do the job
A girl delivering newspapers travels 1 blocks west, 2 blocks north, and then 6 blocks east. What is her resultant displacement
An electron is accelerated from rest through a potential difference that has a magnitude of 3.00x10^7 V. What is the relativistic kinetic energy (in joules) of the electron
A ruler of mass m = 75g and L=3.0meters is placed so that it is exactly balanced across two spinning cylinders a distance d = 1.0meters apart. What is the frequency of oscillation in the ruler
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the period of the orbit
The acceleration due to gravity on the surface of the moon is about g/ 6. If a pendulum has a period T on earth what will its period be on the moon?
A 137-cm-long wire is made by welding a 1.3-mm-diameter, 26-cm-long copper wire to a 0.31-mm-diameter, What is the resistance of the composite wire
A force of 39.2 N is exerted on the small piston of diameter 1.25 cm to support a 1600-kg car on the hydraulic lift shown. What gauge pressure produces this force
The best laboratory vacuum has a pressure of about 1 × 10-18 atm, or 1.010 × 10-13 Pa. How many gas molecules are there per cubic centimetre in such a vacuum at 293K.
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