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Q1. Determine currents I1, I2, and I3 (R5 = 20 ohms). Suppose the internal resistance of each battery is r = 1.0.What is the terminal voltage of the B=6.5V battery?
Q2. The loaded cab of an elevator has a mass of 3.0 x 10^3 kg and moves 145 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab?
Two tug boats are towing a ship. Each exerts a horizontal force of 5 tons, What net force is exerted on the ship
A small glass bead charged to 5.9nC is 4.0cm from a thin, uniformly charged, 10cm long glass rod. What is the total charge on the rod
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 445 Hz, calculates the speed of the train
The famous horse & cart physics scenario is explained. This scenario is used to describe why many people have a common misconception about what Newton’s 3rd Law says & does not say.
A racing car travels with a constant tangential speed of 75 m/s around a circular track with a radius 625 m. Find (a) the magnitude of the car's total acceleration and (b) the direction of its total acceleration relative to the radial direction.
Both surfaces of a double convex lens have radii of 30.0 cm. what is the index of refraction of the lens material
A projectile is shot from the edge of a cliff h = 105 m above ground level with an initial speed of v0 = 135 m/s at an angle of 37.0Â ° with the horizontal.
A proton (mass 1 u) moving at 5.40 *10^6m/s collides elastically and head-on with a second particle moving in the opposite direction at 2.60 106 m/s. Find the mass and final velocity of the second particle
suppose that the gold ions carry one elementary unit of positive charge.
one hundred meters of 2.0mm diameter wire has a resistance of 0.532 ohm. What is the resistivity of the material from which the wire is made
In a series circuit, a generator (1384 Hz, 14.4 V) is connected to a 17.1-? resistor, a 3.69-µF capacitor, and a 5.72-mH inductor. Find the voltage across each circuit element
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temerature.
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