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An 80-N crate slides with constant speed a distance of 5.0 m downward along a rough slope that makes an angle of 30 ° with the horizontal. The work done by the force of gravity is?
Calculate the mass flow rate (in grams per second) of blood (Ï = 1.0 g/cm3) in an aorta with a cross-sectional area of 2.0 cm2 if the flow speed is 47 cm/s
At 18°C, a rod is exactly 20 cm long on a steel ruler. Both the rod and the ruler are placed in an oven at 285°C, where the rod now measures 20.21 cm on the same ruler. What is the coefficient of linear expansion for the material of which the rod ..
Find the slit seperation of a double slit system that will produce bright interference fringes 1.00 degrees apart
An ore car of mass 4 000kg rolls downhill on tracks from a mine. At the end of the tracks, 10 m lower in elevation, is a spring with k = 400 000 N/m. How much is spring compressed in stopping the ore car? Ignore friction.
The cockroach's speed (relative to the ground) is 2.0 m/s, and the lazy Susan turns clockwise with angular velocity ω0 = 3.2 rad/s. The cockroach find out a bread crumb on the rim and, of course, stops.
As the sun rises over a still pond, an angle will be reached where its image seen on the water's surface (n(subw)=1.333) will be completely polarized in a plane parallel to the surface. What is the angle between the reflected and refracted beams
A uniform electric field of magnitude 271 V/m is directed in the negative x direction. A +12.7 ?C charge moves from the origin to the point (x, y) = (15.5cm, 46.0 cm). What was the change in the potential energy of this charge?
Find out an average acceleration of the motorcycle
When responding to sound, the human eardrum vibrates about its equilibrium position. What is the maximum acceleration of the eardrum
The current in a coil drops from 3.1 A to 2.6 A in 0.53 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
You fly your 20.0m -long spaceship at a speed of c/ 4 relative to your friend. determine the speed of your friend relative to you
An observation satellite orbits the planet at a height of 1000 . What is the projectile's speed as it passes the satellite?
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