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A rider on a bike with the combined mass of 100 kg attains a terminal speed of 15 m/s on a 12% slope. Assuming that the only forces affecting the speed are the weight and the drag, calculate the drag coefficient. The frontal area is 0.9 m2. Speculate whether the rider is in the upright or racing position.
Fused quartz and oleic acid both have an index of refraction of 1.46. What would you expect to see if a piece of fused quartz was placed in a container of transparent liquid oleic acid?
Block A with a mass of 9.0 kg moves along the x axis with a velocityof 6.0 m/s(in the positive x direction.) It suffers an ellastic collision with block B (15.0 kg), which initially has a velocity of -2.0 m/s(in the negative x direction). The bloc..
A 12.5 cm tall soft drink can has a mass of 17.0 g and contains 364 g of soda when full. Where is its center of mass when half full
Two point charges of 2 C and –3 C are separated by 6 cm. Is the force attractive or repulsive? Describe. What is the magnitude of the electrostatic force among them?
A light spring with a force constant of 13N/m is connected to a wall and a 1.2-kg toy bulldozer. When the electric motor in the bulldozer is turned on, What is the numerical value of this coefficient of friction
The rms current in an RL circuit is 0.32A when it is connected to an ac generator with a frequency of 60Hz and an rms voltage of 25V. Find the rms voltage across the inductor
as a helicopter carrying a crate takes off its vertical position as well as the crates is given as yt at3 where a is a
A 410?? resistor and a 6.50??F capacitor are connected in parallel to an ac generator that supplies an rms voltage of 220V at an angular frequency of 360rad/s. Find the current amplitude in the capacitor
question a 67.5 kg person sits on a 3.77 kg chair. each leg of the chair makes contact with the floor in a circle that
A rotating cylinder about 16 {rm km} long and 7.40 km in diameter is designed to be used as a space colony. With what angular speed must it rotate so that the residents on it would experience the same acceleration due to gravity as on Earth.
Shown below is a 4.00-ft by 8.00-ft sheet of plywood with the upper left quadrant removed. Assume the plywood is uniform and determine the x and y coordinates of the center of gravity. Hint: The Earth's gravitational field is also uniform for the ..
a police car is traveling east at 40.0 ms along a straight road overtaking a car ahead of it moving east at 30.0 ms.
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