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1. At low speed, air resistance is a force proportional to the velocity v of an object: F = -kv. Is this force conservative?
2. What is the escape velocity (in m/s) from the Sun (M =2.0E30 kg) of an object that is a distance 9.1E7 km from the center of the Sun?
A infinitely long metal pipe of square cross section, with side length a, has two of its side that are opposite each other held at a constant potential V_0. The remaining two sides, that are also opposite each other, are grounded. Find the potential ..
Two coils are wound around the same cylindrical form. When the current in the first coil is decreasing at a rate of -0.240 A/s , What is the mutual inductance of the pair of coils
A 50.0kg crate is being pulle along a horizontal smooth surface. What is the magnitude of the normal force acting on the crate
What is the capacitance of a pair of circular plates with a radius of 5.0cm separated by 2.9mm of mica? The dielectric constant of mica is 7
An 15 by 7.5 house is built on a concrete slab 29 thick. What is the heat-loss rate through the floor if the interior is at 22 while the ground is at 12
question1a place kicker must kick a football from a point 33.0 m about 36 yd from the goal. as a result of the kick
The weight of passengers on a roller coaster increases by 52% as the car goes through a dip with a 35m radius of curvature. What is the car's speed at the bottom of the dip
q1. points a and b have electric potentials of 293 v and 149 v respectively. when an electron released from rest at
The balls have a glancing collision, not a head-on collision, deflecting the second ball by 90° and sending it north at 1.51 m/s. Illustrate what are the speed and direction of the first ball after the collision?
A 69-g ice cube at 0°C is heated until 60 g has become water at 100°C and 9.0 g has become steam at 100°C. How much energy was added to accomplish the transformation? =_____ J
In a demonstration, a 0.5kg magnet isdropped to the edge of a rotating circular steel plate. the mass ofthe plats is 5kg, the radius 0.3m. find the angular speed after the magnet is attached to the plate
An archeological specimen containing 10.2gram of carbon has an activity of 0.8 Bq. Estimate How old is the specimen
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