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A car owner forgets to turn off the headlights of his car while it is parked in his garage. how long will it take the battery to completely discharge
A farmer throws a sack of wheat vertically downward with an initial speed of 12 m/s from the roof of a mill, 30.0 m above the ground. What is the speed of the sack at impact
A straight wire segment 4 m long makes an angle of 30° with a uniform magnetic field of 0.37 T. Find the magnitude of the force on the wire
A trunk of mass m = 1.800 kg is pushed a distance d = 185 cm up an incline with an angle of inclination theta = 25.0 ° by a constant horizontal force P = 300. N, Calculate the work done on the t
Three identical metal spheres are charged so that sphere A has a charge of 220 ?C, sphere B has a charge of -370 ?C, What is the final charge on each sphere
If the current through the inductor (L = 25.1 mH) at 351 Hz has an amplitude of 45 mA, what is the rms value of the AC voltage
Heat flows into an ideal gas at a constant volume. The pressure increases from 1.5 atm to 5.5 atm. What is the total change in internal energy
A horse pulls a cart with a force of 61 lb at an angle of 25° above the horizontal and moves along at a speed of 8.5 mi/h. What is the average power (in horsepower, hp) of the force
An ideal gas expands at a constant total pressure of 2.5 atm from 3.45 L to 6.70 L. calculate the total heat flow into the gas
A moving 3.30kg block collides with a horizontal spring whose spring constant is 261 N/m.What is the speed of the block when it hits the spring
A 370 kg rocket sled can be accelerated at a constant rate from rest to 1200 km/h in 2.0 s. What is the magnitude of the required net force
A 500g rock on a 80 cm long string is swung in a vertical circle 300 cm above the ground. What is the speed of the ball at this point
You are an astronaut (m = 100 kg) and travel to a planet that is the same radius and mass as the Earth, What is your apparent weight at the equator of this planet
A bicycle wheel of radius 0.6 m is spinning at a rate of 120 revolutions per minute. What is the period of the wheel's motion
Jason takes off from rest across level water on his jet-powered skis. The combined mass of Jason and his skis is 75 kg, What is Jason's top speed
A spring is used to propel a 0.400-kg hockey puck across level (frictionless) ice that becomes a rough (not frictionless) ramp inclined at 27°. If the puck reaches a maximum vertical height of 1
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum velocity of 0.800m/s, What is the amplitude of the wave
A 0.165 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.81 m/s. Find the final velocity (magnitude and direction) of each glider
At 7914 oC the equilibrium constant for the reaction: 2 NO(g) N2(g) + O2(g) is KP = 0.726. If the initial pressure of NO is 0.00366 atm, what are the equilibrium partial pressures of NO, N2, and O2?
The Earth is showered with particles from space known as muons. What will be the radius of the muon's resulting orbit
Gaseous NOBr is placed in a closed container at -180 oC, where it partially decomposes to NO and Br2: 2 NOBr(g) 2 NO(g) + 1 Br2(g) At equilibrium it is found that p(NOBr) = 0.008230 atm, p(NO) = 0.0
Calculate the theoretical mass of benzil that can be reduced to hydrobenzoin using 100 mg of NaBH4
Describe what would be observed if a double slit were illuminated by light of the two yellow mercury lines of wavelengths 577 and 579 nm respectively, calculate the visibility of the fringer near m=
2750 ml sample of 3 M Hcl solution is treated with 4.66 gm of magnesium . Calculate the concentration of the acid solution after all the metal has reacted. Assume that the volume remain unchanged---
A 1.50 ? 103-kg car starts from rest and accelerates uniformly to 15.2 m/s in 11.3 s. Find the average power developed by the engine