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Three resistors, with values of 2.0, 4.0 and 8.0 ohm, correspondingly, are connected in parallel. Estimate the overall resistance of this combination?
A 124-? resistor and a 163-? resistor are both connected in parallel across a power supply. If the potential drop across the 124-? resistor is 12 V, what is the exact potential drop (in volts) across resistorv 3
A ball of mass 0.275kg that is moving with a speed of 5.1m/s collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
find the final temperature when 1000 g of water at 20 celcius in a 125 g copper calorimeter is mixed with 50g of steam originally at 153 celcius.
A certain conductor has 6.20 10^28 free electrons per cubic meter, a cross-sectional area of 4.00 10-6 m2, Find the drift speed of the electrons in the conductor
According to kinematics(x=.5g*t2), the acceleration is dependant only upon. The mass of the object.
A satellite with a mass of 270 kg moves in a circular orbit 4.00 107 m above the Earth's surface. (a) What is the gravitational force on the satellite? . N (b) What is the speed of the satellite? . km/s (c) What is the period of the satellite?
Larry tosses a volleyball to his wife, Lise, who catches it at the same height from which it was tossed. what was the initial horizontal velocity
Use the worked example above to help you solve this problem. Figure a shows a simple apparatus for demonstrating resonance in a tube. Find the wavelength and the next two air-column lengths giving resonance
An electric potential is set up across a pair of parallel plates such that the left plate is at -594 V, What is the kinetic energy of the electron when it reaches the hole in the right plate
Two children are playing a game. The rst throws a basketball straight up, and the second tries to hit it with a thrown baseball. What is the angular impulse on the basketball
A ball is thrown from the window of a high-rise building with an initial velocity of 5.1 m/s at an angle of 22 deg. how fast is the ball travelling when it hits the (horizontal) ground
Find where is the near point of an eye for which a contact lens with a power of +2.90 diopters is prescribed
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