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A 15N block is now immersed in a salt water (density = 1030 kg/m3). Determine the buoyant force acting on the block if the spring scale reads 11.5 N.
A 4.00 kg mass is connected by a light cord to a 3.00 kg mass on a smooth surface. The pulley rotates about a frictionless axle and has a moment of inertia of .5 kg m2 and a radius of .30 m.
What is the maximum kinetic energy of electrons if the metal is illuminated by UV light of wavelength 375nm
questionhuman blood contains plasma platelets and blood cells. to part plasma from other components centrifugation is
A proton and an electron are moving due east in a constant electricfield that also points due east. The electric field has a magnitudeof 8.0 × 104 N/C. Determine the magnitude of the acceleration of the proton and the electron.
A delivery man travels 34.0 m north, 23.0 m east, 12.0 m south, then takes an elevator 32.0 m up into a building. What is the magnitude of his displacement
Calculate the magnitude of the angular momentum of the Mars in a circular orbit around the sun. The Mars has mass 6.42×10^23 kg , radius 3.40×10^6 m , and orbit radius 2.28×10^11 m. The planet completes one rotation on its axis in 24.5 hours and one ..
question1a hotel elevator ascends 160 with a utmost speed of 4.9. its acceleration and deceleration both have a
where the woman falls down from a great height, and comes to a full stop. For which case is the change in the woman's momentum the largest? For which case is the Impulse the largest?
Eight books, each 4.9 cm thick with mass 1.2 kg, lie flat on a table. How much work is required to stack them one on top of another.
What volume of space contains an energy equal. A car in stop-and-go traffic starts at rest, moves forward 12m in 8 seconds, then comes to rest again. The velocity-versus-time plot for this car is given.
A policeman uses a radar gun to detect the speed of drivers in a 65 mph (29.06 m/s) zone, What is the driver's speed, Is the driver breaking the speed limit
a bicycle is racing around on a horizontal surface in a circle of radius 26 m. the force exerted by the road on the
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