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A car tire makes contact with the ground on a rectangular area of 12 cm by 18 cm. If the car’s mass is 925 kg, what pressure does the car exert on the ground as it rests on all four tires?
Normalize the function Ψ = e^-r
A car is moving at a speed of 25 m/sec around a level curve of radius 100 m. What is the minimum value of the coefficient of static friction between the tires and the road required to prevent the car from skidding?
1 kg of steam at 7 bar, entropy 6.5 kJ/kg K, is heated reversibly at constant pressure until the temperature is 250℃. Calculate the heat supplied.
1 kg of steam at 100 bar and 370℃ expands reversibly in a perfectly thermally insulated cylinder behind a piston until the pressure is 38 bar and the steam is then dry saturated. Calculate the work done
A capacitor is charged to a potential of 12.0 V and then connected to a voltmeter having an
internal resistance of 3.40 MΩ. After a time of 4.00 s the voltmeter reads 3.0 V. What are
(a) the capacitance and (b) the time constant of the circuit?
A charge of 4.50x10^-8C is placed in a uniform electric field that is directed vertically upward with a magnitude of 5.00x10^4N/C. What work is done by the electrical force when the charge moves 0.450m to the right? 0.800m downward? 2.60m at an angle of 45° from the horizontal?
How many electrons are present in a wire if a 1.5 A current passes through the conductor in 2 minutes?
Calculate the position of Fermi level Ef at 200K for germanium crystal containing
10x1022 Boron atom per meter cube.
A grandfather clock on earth has a pendulum with a period of 1.0. Calculate the length of the pendulum
