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Two resistors are wired in series. The second resistor has twice the resistance as the first. Current passes through the combination. Compared to the current through the first resistor, the current through the second resistor is:
a) The same as the first
b) one half of the first
c) smaller, but not necessarily half of the first
d) one quarter of the first
In living tissue, about one out of every 10-12 carbon atoms are the 14C isotope. If you were to discover a human bone with a 14C occurrence of one out of every 10-14 atoms
A steel piano wire 1.35 m long has a cross- sectional area of 0.00751 cm2. When under a tension of 68.9 N, how much does it stretch
A satellite of mass 410 kg is launched from a site on the Equator into a circular orbit at 5000 km above Earth's surface. DATA: Rearth=6.38×106 m. a.) What is the acceleration of gravity at this altitude? b.) What is the speed of the satellite? c.) W..
A boat with a horizontal tow rope pulls a water skier. She skis off to the side, so the rope makes an angle of 15.0 degrees with the forward direction of motion. how much work does the rope do on the skier
A roller coaster at an amusement park has a dip that bottoms out ina vertical circle of radius r. A passenger feels the seat of thecar pushing upward on her with a force equal to twice her weight asshe goes through the dip. If r = 20.0 m, how fast..
A new event has been proposed for the Winter Olympics. Anathlete will sprint 150 m, startingfrom rest, then leap onto a 19.9 kgbobsled. How far will Jennifer compress the spring
The scale of a spring balance reading from zero to 180 N is7.00 cm long. A fish suspended from thebalance is observed to oscillate vertically at 2.50 Hz. What is the mass of the fish? Neglect themass of the spring.
Calculate the period T and the tension in the string F as a function of the angle. Compute the moment of inertia of this system for an axis that passes through the combined center of mass and is perpendicular to the plane of the rings.
The electric field component of a sinusoidal electromagnetic wave traveling through a plastic cylinder is given by the equation E = (5.35(V/m))cos[(1.39x10^7 (rad/m))x-(3.02x10^15(rad/s))t]
A car wheel in diameter of 30 inches has a linear velocity of 30 mph. The car accelerates for 10 seconds. What is the angular displacement of the car wheel during the 10 seconds of acceleration
Holding a long rope by its upper end, you lower itonto a scale. Calculate the thrust exerted by the rope as it lands on the scale
it took a force of 250 N to pull a crate weighing 765 N across the floor. the work done was 3500 J. how far was the crate moved
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