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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?
A comet orbits the Sun with a period of 83.77 years. The comet's distance of closest approach to the Sun (perihelion) is 1.087 AU. What is the maximum distance of the comet from the Sun
A laser beam is incident on two slits with a separation of 0.210 mm, and a screen is placed 5.30 m from the slits. what is the wavelength of the laser light
A standing wave on a string that is fixed at both ends has frequency 80.0 Hz. What is the speed of the waves on the string
A pitcher throws a 0.140 kg baseball, and it approaches the bat at a speed of 30.0 m/s. The bat does Wnc = 60.0 J of work on the ball in hitting it. determine the speed of the ball after the ball leaves the bat
an 11.0 m 230 n uniform ladder rests against a smooth wall. the coefficient of static friction between the ladder and
An unsuspecting bird is coasting along in an easterly direction at 4.00 mph, If the acceleration from the wind lasts for 2.40 s, find the magnitude, r, and direction, θ, of the bird\'s displacement during this time period
A thin converging lens has a focal length of 20 centimeter. If an object is located 40 centimeter from the lens, determine is the image real or virtual and where is it located
Two heat reservoirs at temperatures 165°C and 60°C, respectively, are brought into thermal contact, find the change in the entropy of the two-reservoir system
Some bacteria are propelled by biological motors that spin hair-like flagella. What is the angular speed (the magnitude of the angular velocity) of this bacterial motor
An arrow is shot at an angle of theta=45 above the horizontal. The arrow hits a tree a horizontal distance D=220m away, at the same height above the ground as it was shot. Use g=9.8 m/s^2 for the magnitude of the acceleration due to gravity
1. A ball of mass 0.544 kg is moving east with a speed of 3.90 m/s and collides head-on with a 0.272 kg ball at rest. Assume that the collision is perfectly elastic. After the collision, the 0.544 kg ball moves at 1.3 m/s. What is the speed of the 0..
A 10 kilogram block rests on the edge of a spinning merry-go-round (a horizontal spinning disk). Obtain the magnitude of the frictional force which keeps the block from falling off the merry-go-round
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