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1. Suppose that you measure the resistance of a resistor using a voltmeter, a current meter, and a battery. Suppose that the voltmeter reads 0.2 % high and the current meter reads 0.3 % low. What will be the percent error in your measurement of resistance? (Hint: If you do not know how to work this problem with abstract mathematics, try making up a numerical example that meets the given conditions.)
2. Why did you have such a large percent difference in the resistance of the lamp filament with the two different applied voltages? What physical condition of a conductor must remain constant for Ohm's law to apply?
usha and ritu are two sisters. usha wants to explain some technologies to ritu. initially ritu did not show any
Loudspeakers A and B are 7.00 m apart and vibrate in phase at 172 Hz. Determine the difference in phase of the two signals at a point C along the line joining A and B, 3.00 m from B and 4.00 m from A
assume the coefficient of kinetic friction between m_{rm A} and the plane in the figure is mu_k = 0.15, and that m_{rm{A}} = m_{rm{B}} = 2.7{rm{ kg}}. What smallest value of mu _{rm{k}} will keep the system from accelerating.
a lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.7 ms2. if the
A block with mass m = 0.1 kilogram is located on a wedge inclined at an angle theta = 30o above the horizontal. Determine the position of the block when it first comes to rest
A 715 kg car moving at 28 m/s brakes to a stop. The brakes contain about 17 kg of iron that absorb the energy. What is the increase in temperature of the brakes
A whale sends an undersea signal to its mate and then gets a response 4.5 seconds later. How far away is the whales mate
On a frictionless, horizontal air table, puck A (with mass 0.240 kilogram) is moving toward puck B (with mass 0.350 kilogram), that is initially at rest. Determine the speed of puck A before the collision
Consider a circuit consisting of a lightbulb and a capacitor. Part A:If the frequency of the generator is increased, does the intensity of the lightbulb increase, decrease, or stay the same? Part B:Choose the bestexplanation from among the following:
noting that a person standing in a room maintained at 20degc at all times the inner surfaces of the walls floors and
Two stars are 2.1 Ã- 1011 m apart and are equally distant from the earth. Find the maximum distance that these stars could be from the earth
An 1840 kg car is driving at a constant speed of 12m across a bridge shaped in an arc with a rdius of 22m. Calculate the magnitude of the normal force the bridge exerts on the car
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