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1. Consider an airplane that normally has airspeed of 100km/h in a 100km/h crosswind blowing west to east. Compute its ground velocity when its nose is pointed north in the crosswind.
2. A boxer punches a sheet of paper in mid air and brings it from rest up to a speed of 25m/s in 0.05s.
1. What acceleration is imparted to the paper?
2. If the mass of paper is 0.003kg, what force does the boxer exert on it?
3. How much force does the paper exert on the boxer?
Consider a 7 solar mass main sequence star, Estimate its luminosity in solar luminosities and how long (in years) it could maintain its luminosity through gravitational collapse
Water flows at a rate of 21 through a horizontal 8.0--diameter pipe under a pressure of 10.6 . At one point, calcium deposits reduce the cross-sectional area of the pipe to 28 . What is the pressure at this point? (Consider the water to be an ideal f..
A charged rod carrying a negative charge is brought near two conducting spheres that are in contact with each other but insulated from the ground. If the two spheres are then separated, what charge does B have, positive, negative or neutral?
the movable mirrror in a michelson interferometer is displaced to give an interferogram with 1000 local maxima. if the
A coin with a diameter of 1.7 cm is dropped on its edge onto a horizontal surface. It starts rolling with an initial angular speed of 15.3 rad/s and rolls in a straight line without slipping.
Resistances of 2.9 ?, 4.5 ?, and 6.8 ? and a 17.1 V battery are all in series. Find the potential difference across the first (2.9 ?) resistor.
A nuclear power plant has a reactor that produces heat at the rate of 690 MW. This heat is used to produce 250 MW of mechanical power to drive an electrical generator. At what rate is heat discarded to the environment by this power plant? MW
A balloon contains 2.5 L of oxygen gas at 1.0 atm, How much work is done in compressing the balloon at constant pressure
A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. determine the maximum inductance of the tank circuit
A plate hits the floor and breaks into 2 pieces. The first piece has a mass of 0.2 kg and flies off at an angle of 30 degrees above the horizontal at 1.5 m/s. At Which direction does the second piece go
Two adjacent natural frequencies of an organ pipe are found to be 1260 Hz and 1350 Hz. Calculate the fundamental frequency and length of this pipe
question a point on the rim of a 0.71-m-diameter grinding wheel changes speed at a constant rate from 11 ms to 25 ms in
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