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A 64 kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. The initial speed of the skier is 6.6 m/s. After coasting a distance of 1.9 m up the slope, the speed of the skier is 3.3 m/s.
(a) Find the work done by the kinetic frictional force that acts on the skiis.
J
(b) What is the magnitude of the kinetic frictional force?
N
The electric field in a region of space has the components Ey = Ez = 0 and Ex = (5.90 N/(C·m))x. Point A is on the y axis at y = 4.30 m, What is the potential difference (in V) VB - VA
In a head-on collision, the car stops in 0.23 {rm s} from a speed of 17 {rm m}/{rm s}. The driver has a mass of 77 {rm kg}, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fract..
Water flows at a speed of 1.7 m/s throughout a horizontal pipe having a circular cross section 5 cm in diameter. The pipe widens to a diameter of 14 cm. Treat the water as an idea fluid.
Two large equipotent surfaces are flat and parallel and separated by a relatively small distance compared to their size. One surface is at 25 V and the other is at 33 V. The surfaces are 1.25 cm apart. What is the direction of the electric field m..
In uniform circular motion, a particle undergoes motion in a circular path with a constant speed. Which of the following statement is false and why?
The rocket moves for 3.00 s along its initial line of motion with an acceleration of 31.0 m/s2. At this time, its engines fail and the rocket proceeds to move as a projectile. Find out the maximum altitude reached by the rocket.
What focal length does the lens require
When subject to a steady acceleration of 0.500 g the object must be located 0.350 cm from its equilibrium position. Find out the force constant required for the spring.
You're driving down the highway late one night at 18 when a deer steps onto the road 36 in front of you. The reaction time before stepping on the brakes is 0.50, and the maximum deceleration of your car is 12.
Concept to find certain type of electronic devices & circuits.
A small rocket is powered upward on lift-off by an engine thrust of 12,000-N. If the resulting upward acceleration is 6.40m/s^2, what is the mass of the rocket?
Assume a neuron in the brain carries a current of. Treating the neuron as a straight wire, what is the magnetic field it produces at a distance of 7.50.
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