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A skier is gliding along at 2.0 m/s on horizontal, frictionless snow. He suddenly starts down a 12° incline. His speed at the bottom is 15 m/s
What is the length of the incline?How long does it take him to reach the bottom?
A rescue plane is flying at 300 m above the ground at 210 km/hr. It is going to drop a package of supplies to some survivors on the ground. how far from the survivors should it drop the package
A small metal ball is given a negativecharge, then brought near (i.e., within about 1/10 the length ofthe rod) to end A of the rod . What happens to end A of the rodwhen the ball approaches it closely this first time?
An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel as shown in the figure below. The flywheel is a solid disk with a mass of 70.5 kg and a radius R = 0.625..
Space invaders land on earth. On the invaders' temperature scale, the ice point is at 25°I (I = invader), and the steam point is at 153°I.
A car with a total mass of 1.65*103 kg has wheels ofradius 35.0 cm and moment ofinertia 0.760 kg ·m2. Suppose that the wheels were then replaced byoversized wheels of the same shape and made of the same materials,but 49% wider and witha 49% larger..
The membrane that surrounds a certain type of living cell has a surface area of 7.4 x 10-9 m2 and a thickness of 1.1 x 10-8 m. how many such ions are present on the outer surface
A solid metal sphere of radius a = 1.30 cm is surrounded by a concentric spherical metal shell of inner radius b = 1.90 cm and outer radius c = 2.40 cm. What is the surface charge density, sc, on the outer surface of the outer spherical conductor
Vectors and lie in an xy plane. has magnitude 8.40 and angle 132° from the positive direction of the x axis. has components Bx = -8.00 and By = -9.20. (Type 'undefined' for any answer if appropriate.)
In an amusement park water slide, people slide down an essentially frictionless tube. They drop 2.8 m and exit the slide, moving horizontally, What horizontal distance do they travel from the exit point
Find the electrical and gravitational forces between the proton and electron in a hydrogen atom. Which force holds it together
A white billiard ball with mass mw = 1.48 kg is moving directly to the right with a speed of v = 3.05 m/s, what is the final speed of the black ball
A particle with charge Q = 4.70 µC is located at the center of a cube of edge L = 0.200 m. In addition, six other identical charged particles having q = -1.5 µC are positioned symmetrically around Q as shown in the figure below. Determine the electri..
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