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Suppose you have two boxes that conceal what is inside, althougheach has two wires coming out of the interior. You have atyour disposal some batteries, wire and identical flash tlight bulbs. Describe how you might go about determining which of the two boxes has the lower electrical resistance or whether thetwo are identical.
A 0.401 kg bead can slide on a curved wire, If the wire is frictionless and the bead is released with an initial speed of 12.8 m/s in the forward direction then find the speed of the bead at B
In a series circuit, a generator (1436 Hz, 14.7 V) is connected to a 15.2-? resistor, a 3.85-µF capacitor, and a 5.47-mH inductor. Find the voltage across each circuit element
a copper piece of mass 10g is suspended by a vertical spring. The spring elongates 1 cm over its natural length to keep the piece in equilibrium. Find the elongation of the spring
A three level laser has energy levels E 1=1.50 eV, E 2=2.50 eV, and E 3=3.50 eV. Level E 2 is the metastable state. What is the lasing wavelength
A 2.0x10^-9 C point charge is located at x=3 cm, Determine the force on the negatively charged object due to the positively charged object
We want to design a freeway off ramp that has a radius appropriate for the posted speed. What is the radius of the curved exit ramp such that the car does not skid off the ramp
A parallel beam of light with an energy flux S of 10 W/cm2 falls for 1 hour on a perfectly reflecting plane mirror of 1.0 cm2 area. what force acts on the mirror
A spaceship leaves Earth traveling 0.70c. A second spaceship leaves the first at a speed of 0.88c with respect to the first. Calculate the speed (including sign) of the second ship with respect to Earth
A rectangular block of ice 7.00 m on each side and 1.80 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. How high does the top of the ice block float above the water level.
parachutist with a camera, both descending at a speed of 13 m/s, releases that camera at an altitude of 110-m.
A heat pump has a coefficient of performance of 3.85 and operates with a power consumption of 7.14 103 W. How much energy does it extract from the outside air
A drinking fountain shoots water out from a height of 3.5cm above its basin. Determine the time a single drop spends in the air
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