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An ideal gas is at 30 degrees C. The gas is cooled, reducing the thermal energy by 20%.
What is the new temperature in degrees C ?
Find the basic and actual transmission losses between two antennas separated by 30 meters operating at 10 MHz when the gain of each antenna is 1.65 dB
A 9.8-kg object oscillates at the end of a vertical spring that has the spring constant of 1.75 104 N/m. The effect of air resistance is represented by the damping coefficient b = 3.00 N•s/m.
Boiling Water at High Pressure. When water is boiled under a pressure of 2.00 atm, the heat of vaporization is 2.20 multiply.gif 106 J/kg, Compute the increase in internal energy of the water
A certain superconducting magnet in the form of a solenoid of length 0.60 m can generate a magnetic field of 6.0 T in its core, Find the number of turns in the solenoid
A flight attendant pulls her 72-N flight bag a distance of 265-m along a level airport floor at a constant velocity. The force she exerts is 44-N at an angle of 57° above the horizontal.
the overhead cable for a street trolley is strung horizontally 5 m above the ground. What is the magnetic field at street level directly under the cable
A wheel of radius 0.360 m starts from rest and accelerates uniformly to an angular speed of 18.0 rad/s in 6.00 s. Calculate the final linear speed of a point on the rim of the wheel. In other words, relate the velocity v to the angular velocity ? Cal..
A car of mass 960 travels at a speed of 30 along the straight road. The driver sees a red traffic light ahead, and applies brakes. The coefficient of friction between the car tyres and the road is 0.88. Take the acceleration due to gravity to be 9.80..
Canadian nuclear reactors use heavy watermoderators in which elastic collisions occur between the neutrons and deuterons of mass2.0 u. What is the speed of a neutron, expressed as a fraction of its original speed, after a head-on
A charge of +q is located atthe origin, while an identical charge is located on the xaxis at x = 0.49 m. A thirdcharge of +4q is located on the x axis atsuch a place that the net electrostatic force on the charge at theorigin triples, its directio..
A particle of mass m strikes a wall at an angle θ with respect to the normal. The collision is inelastic with coefficient of restitution E. Find the rebound angle of the particle after collision with the wall.
One cubic meter of water flowing over Niagara Falls in New York drops 98.1 meters. how much heat energy would the water have
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