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Two resistors A and B are connected in series to a 9.0 V battery; the voltage across resistor A is 6.0 V. When A and B are connected in parallel across a 9.0 V battery, the current through B is 3.0 A. What are the resistances of A and B? The batteries have negligible internal resistance.
A supertanker filled with oil has a total mass of 1.04 109 kg. If the dimensions of the ship are those of a rectangular box 235 m long, 76 m wide, how far the bottom of the ship is below sea level
An object is released from an aeroplane which is diving at an angle of 30 from the horizontal with a speed of 50m/s. If the plane is at a height of 4000m from the ground when the object is released, find the velocity of the object when it hits the gr..
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s). what is the magnitude of the average angular acceleration of the disk
a wire carrying a 2-a current is placed at an angle of 60deg with the respect to a magnetic field of strength 0.2 t.
question a cepheid variable star is a star whose brightness alternately increases and decreases. the most easily
An aluminum rod of length l has a resistance of .8 ohms. Half of the rod is machined down so that half of the rod now has half of the radius of the original radius. What will be the new resistance
The wingspan (tip-to-tip) of a Boeing 747 jetliner is 59 m. The plane is flying horizontally at a speed of 220 m/s. Find the emf induced between the wing tips
A space station is constructed in the shape of a hollow ring of mass 5.90 104 kg and radius 140 m. The station has 300 crew members (each with average mass 65kg), How much work is done to get the space station spinning
An archer's bow is drawn at its midpoint until the tension inthe string is 1.20 times the force exerted by the archer. What is the angle between the two halves of the string
A red light flashes at position xR=4.00 m and time tR=1.00x10-9 s and a blue light flashes at xB=5.00 m and tB=8.50x10-9 s. Find the location of the two flashes in frame S'
a person takes a trip, driving with a constant speed of89.5km/h except for a 22 min rest stop. how much time is spent on the trip
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
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