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A system consisting entirely of electrons and protons has a net charge of 1.95 10-15 C and a net mass of 4.43 10-23 kg. (a) How many electrons are in this system? electrons (b) How many protons are in this system?
In a 30.0 s interval, 470 hailstonesstrike a glass window of area 0.600 m2 at an angle of45.0° to the window surface. Each hailstone has a mass of 5.00g and a speed of 8.30 m/s. If thecollisions are elastic, find the pressure on the window.
You need to make a series ac circuit having a resonance angular frequency of 1475 rad/s using a 146 Omega resistor, a 10.5 mF capacitor, and an inductor. What should be the inductance of the inductor
A car with its parking brake on starts sliding down an extremely slippery icy h=6 m high embankment into a level snowy muddy field with a coefficient of kinetic friction of 0.8
The number of radioactive nuclei in a particular sample decreases to one-eighth of the original amount in 21 days. What is the half-life of the these nuclei
A device uses a Stirling cycle on 433 moles of a monatomic ideal gas between two reservoirs with temperatures of 416 K, How much energy does this device transfer into the hot reservoir
q1. an artillery shell is fired with an initial velocity of 303 ms at 46deg above the horizontal. to clear an avalanche
A 6.50 g bullet moving at 726 m/s strikes a 590 g wooden block at rest on a frictionless surface. What is the speed of the bullet-block center of mass
A solid metal ball of radius 1.6 cm is located near a hollow plastic ball of radius 2.1 cm, What is the electric field at the center of the metal ball due just to the charges on its surface
A 75 W light bulb with a resistance of 179 ? is connected to a power supply with a 121 V. What is the internal resistance of the power supply
A steel wire of length 1.97 with circular cross section must stretch no more than 0.260 when a tensile (stretching) force of 400 is applied to each end of the wire. What is the minimum diameter necessary.
Two 12-cm-diameter charged rings face each other, 17.0 apart. Both rings are charged to + 40.0. What is the electric field strength at the midpoint between two rings.
A long solenoid has 1400 turns per meter of length, and it carries a current of 3.5 A. Find the torque exerted on the coil
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