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A car goes over a circular bump in the road with a radius of 30 meter at a speed of 15 m/s. Determine the apparent weight of a passenger in the car whose mass is 70 kilogram when at rest, in N?
an air conditioner operates on 800w of power and has a performance coefficient of 2.80 with a room temperature of 22.0
A driver travels northbound on a highway at a speed of 30.0 m/s. A police car, travelling southbound at a speed of 38.0 m/s approaches with its siren producing sound at a frequency of 2500Hz.
An explosion breaks an object into two pieces, one of which has 1.5times the mass of the other. how much kinetic energy did each piece acquire
A plot of the temperature versus the energy per kg added to a piece of ice as it goes from below freezing at - 10°C to becoming steam at 110°C consists of straight lines, What do the upward slopes represent
A commuter train blows its horn as it passes a passengerplatform at a constant speed of 40.0m/s. What is the frequency observed by a person on the platform as the train approaches
find the angle between the position vectors to the points 3 -4 0 and -2 1 0 and find the direction cosines of a vector
An ideal gas is compressed from a volume of 400 cm^3 to a volume of 150 cm^3 slowly and isothermally in a piston-cylinder system. determine the heat transfer
The first car has twice the mass of a second car, but only half as much kinetic energy. What were the original speeds of the two cars
To listen to a radio station, a certain home receiver must pick up a signal of at least 1.0X10^-10 W.If the radio waves have a frequency of 93MHz, how many photons must the receiver absorb per second to get the station?
A cylinder of cross-sectional area 11 cm2 is fitted with a piston, which is connected to a spring with a spring constant of 1250 N/m, as shown in the figure. The cylinder is filled with 0.0050 mole of a gas.
what is the electrostatic force that acts on this charge. What would be the least speed required for the rest of the trip to arrive in time for the interview.
Four charged particles rest at the corners of a square of side a = 0.30 m. Charges 1 through 4 are 10, 20, 30 and 40 µC, Determine the electric field at the center of the square
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