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A Piece of balsa wood, with density: 0.12g/cm^3, with mass of 30g in air is affixed to alead sinker with a mass of 400g. What will be the apparent mass of this system when immersed in water?
a 28Kg rock approaches the foot of a hill with a speed of 15 m/s.This hill slopes upward at a constant angle of 40degrees above the horizontal. use energy conservation to find the maximum height the rock will reach
A rifle bullet with mass 8.00g strikes and embeds itself in a block with a mass of 0.992 kg that rests on a frictionless, Find the magnitude of the block's velocity just after impact
A boy whirls a stone in a horizontal circle 1.6m above the ground,by means of a string 1.4m long. The angle between the stringand horizontal plane is 10 degrees. The string breaks, the stone flies horizontally, and strikes the ground 6m away. What..
You need to use your cell phone, which broadcasts an 828 MHz signal, but you're in an alley between two massive, What is the angular width, in degrees, of the electromagnetic wave
Water is drawn from a well in a bucket tied to the end of a rope whose other end wraps around a solid cylinder of mass 50 kg and diameter 25 cm. As this cylinder is turned with a crank, the rope raises the bucket.
A Jetliner with an airspeed of 1000km/h sets out on a 1500-km flight due south. To maintain a southward direction, however, the plane must be pointed 15 degrees west of south. If the flight takes 100 min, what is the wind velocity ?
What is the minimum (non-zero) thickness for the air layerbetween two flat glass surfaces if the glass is to appear dark when700 nm light is incident normally? What if the glass is to appear bright
A small piece of dust of mass m = 1.3 mu or micro g travels horizontally through an electric air cleaner in which the electric field is 478 N/C. What is the charge on the dust particle
What is the ideal banking angle(in degrees) for a gentle turn of 1.20 km radius on a highway with a 105 km/h speed limit (about 65 mi/h)
A turntable with a moment of inertia of 4.8 kg · m2 rotates freely with an angular speed of 33 1/3 rpm. Calculate the angular speed of the turntable
A 900- kg car collides with a 1300- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car (in km/h)
Suppose the tension in a cord is 14.0 N. If the speed of a wave in the cord is 8.50 m/s, then what must be the linear mass density of the cord
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