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Two point charges plus Q and negative Q of mass m, are placed on the ends of a massless rod of length l, which is fixed to a table by a pin through its center. If the apparatus is then subejcted to a unifrom electric field E parrallel to the table and perpendicular to the rod, find the net torque on the system of rod plus charges.
Three silver wires of equal length are connected in series with a 1.50 V battery. Their cross-sectional areas are 1.00, 5.00 and 10.0 cm2. (a) What is the potential difference across the narrowest wire? (b) The medium wire? (c) The widest wire?
Determine the specific heat capacity of an unknown sample of metal.
A string is attached to a rigid support and the cylinder allowed to drop from rest. Find out the acceleration of the cylinder.
A 10 resistor, 10 mH inductor, and a 110.0 µF capacitor are connected in series to a 50.0 V (rms) source having variable frequency. Find out the energy delivered to the circuit during one period if the operating frequency is twice the resonance fr..
A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. how many helium atoms are in the cylinder? what is the mass of the helium?
A projectile is fired at time t = 0.0 s, from point 0 at edge of a cliff, with initial velocity components of vix=30m/s and viy = 100m/s. The projectile rises, and then falls into the sea at point P. The time of flight of the projectile is 20s.
estimate the electrical energy stored in the atmosphere if the earths electric field extends upward for 1700 m. and
Do you expect the mass to have SHM?
a spaceship leaves earth event a travels to alpha centauri which is 4.3 y distance away and then returns event b
Astronauts on our moon must function with an acceleration due to gravity of 0.170g A. If an astronaut can throw a certain wrench 11.0{rm m} vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed i..
If a Mack truck with a mass mt = 20000 kg and a Honda Civic with a mass of mc=2000 kg have a head on collision and force upon the Mack truck is 1000 N
how much work is done by an applied force that moves two charges of 8.4 microc that are initially very far apart to a
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