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What terminal voltage must an ideal battery( no significant internal resistance ) have to produce a 0.50A current through a 2.0 ohms resistor?
Estimate the maximum strength of a magnetic field needed to control the deflection of an electron beam.
Five grams of nitorgen gas at an initial pressure of3.0atm and at a 20 degrees celcius undergo an iobaric expansionuntil the volume has tribled. What is the gas volume after the expansion?
In a tennis serve, a 0.070 kg ball can be accelerated from rest to 36 m/s over a distance of 0.75 m. Find the magnitude of the average force exerted by the racket on the ball
A 224Ra atom (Z=88, Atomic mass = 224.020186 amu) consists of protons (Mass = 1.00728 amu), Calculate the binding energy per nucleon
the hour hand and the minute hand of big ben a that elizabeth tower clock in london are 2.70 m and 4.50 m long and have
in the cathode ray tube in an old television set, electrons are accelerated from rest with a constant acceleration of magnitude 7.31*10^13 m/s2 during the first 2.77cm of tube's length; find the speed of the electron when they hit the screen
A baseball is thrown upwards at a 45o angle with respect to the ground. Its initial speed is 25 meter per second. Determine how high above its starting point will it reach
A laser pulse has an energy of 25 J and a beam radius of 2 mm. The pulse duration is 6 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
Fred Jones owns 56 shares of the Robust Corporation's stock. Robust announces a 3 for 2 stock split. Explain how many shares will Fred have after this split?
The radar system at an airport broadcasts 11 microwaves with 150 of power. An approaching airplane with a 31 cross section is 24 away. suppose that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly..
Oxygen gas can be produced by decomposing potassium chlorate using the reaction below. If 138.6 g of KClO3 is heated and decomposes completely, what mass of oxygen gas is produced?
A wedge of mass m=36.1 kg is located on a plane that is inclined by an angle ?=21.3 degrees with respect to the horizontal. A force F=302.3 N in the horizontal direction pushes on the wedge. The coefficient of kinetic friction between the wedge and t..
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