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Given three resistors: R1= 2 ohms, R2=3 ohms, and R3= 4 ohms. How many combinations of equivalent resistance can you have. Sketch the configurations and calculate the equivalent resistance.
A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 24.9° and the angle of refraction is 43.0°. What is the index of refraction of the substance
A 12 volt battery powers a circuit that consists of a ten ohm resistor in series with a ten ohm and a 15 ohm that are in parallel. How much current flows through the 15 ohm resistor
a car travels at a constant speed around a circular track whose radius is 2.70 km. the car goes once around the track
Water drops from the nozzle of a shower onto the floor a distance d below. The drops fall at regular intervals of time, Find the location of the individual drops
Although both stars probably formed from the same clump of gas, more massive one must have had its birth slowed so that it became a key -sequence star millions of years later than its less massive companion.
The coefficients of kinetic and static friction between a 1000 lb refrigerator and flor are .4 and .45. when at rest the refrigerator is pushed with a horizontal force of 300 lb. what is the force of friction between the fridge and the floor?
four charges are evenly spaced along the x axis with a separation distance d3cm. the values of the charges are q1 2
As a dilligent physics student, you carry out physics experiments at every opportunity. At this opportunity, you carry a 1.35-m-long rod as you jog at 3.05 m/s, holding the rod perpendicular to your direction of motion. What is the strength of the..
A 45- traffic light is suspended from two steel cables of equal length and radii 0.58 . If each cable makes a 15 angle with the horizontal, what is the fractional increase in their length due to the weight of the light?
A train consists of 4300kg locomotive pulling two loaded boxcars. The first boxcar has a mass of 12,700 kg and the second 16,300 kg. with what force in newtons do the boxcars pull on each other
A 50 kg sled is subject to a net force of 20 N pushing in the direction of the sled motion as it is moving over a horizontal surface for a distance of 11 m after having started from rest. find the work done by friction while the sled is on the incl..
A 18.0 kg loudspeaker is suspended 2.40m below the ceiling by two 4.10m long cables that angle outward at equal angles. What is the tension of each of the cables.
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