You are watching: Which of the following are not vector directions?
(b) 216 W
(c) 316.67 W
(a) If the skier is moving at a constant speed, then his kinetic energy is unchanged. The work done by the rope is the same for speed at 2.2m/s as it is for 1.5m/s. It is 950J
(b) When the speed is 1.5m/s then the time it would take to move up a distance of 6.6 m is 6.6 / 1.5 = 4.4 s
If the work is 950J over 4.4s then the rate of work is 950 / 4.4 = 216 W
(c) When the speed is 2.2 m/s then the time it would take to move up a distance of 6.6 m is 6.6 / 2.2 = 3 s. If the work is 950J over 3s then the rate of work is 950 / 3 = 316.67 W
8 months ago
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Let the magnetic field is B and the charge is q. Angle = 26.1 degree
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11 months ago
Red light from three separate sources passes through a diffraction grating with 6.60×105 slits/m. The wavelengths of the three l
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