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In a region where there is an electric field, the electric forces do +7.85x 10-19 J of work on an electron as it moves from point X to point Y. Which point, X or Y, is at a higher potential? What is the potential difference, VY - VX, between point Y and point X?
A sailboat is traveling east at 5.0 m/s . A sudden gust of wind gives the boat an acceleration a = (0.80 m/s^2 , 40 degrees north of east). A)What is the boat's speed 4.5s later when the gust subsides? B)What is the boat's direction 4.5s later whe..
Two charged particles, q1 = ?2.50×10?3 C and q2 = +3.550e-3 C, are separated by a distance of 5.00 cm. find the electric potential energy of this configuration
Water flowing through a garden hose of diameter 2.79 cm fills a 24.0-L bucket in 1.30 min. What is the speed of the water leaving the end of the hose
A 73 kg window cleaner uses a 17 kg ladder that is 5.1 m long. He places one end on the ground 2.4 m from a wall, What is the angle of this force on the ladder
Consider a spacecraft in an elliptical orbit around the earth. At the low point, or perigee, of its orbit, it is 300km above the earth's surface; at the high point, or apogee, it is 2500km above the earth's surface. What if the rockets were fired ..
Consider a pipe of length 80.0 open at both ends. What is the lowest frequency of the sound wave produced when you blow into the pipe? A hole is now drilled through the side of the pipe and air is blown again into the pipe through the same opening...
football player kicks a ball with a speed of 22.1 m/s at an angle of 46° above the horizontal from a distance of 38 m from the goal line. What is the vertical velocity of the ball at the time it reaches the goalpost
In a car lift, compressed air with a gauge pressure of 4.0 × 10^5 Pa is used to raise a piston with a circular cross-sectional area. what is the maximum mass that can be raised using this piston
The surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a speed of 1.50 m/s, how much work is done by the (non-conservative) force of the wave
A 420g oscillator has a speed of 128.5cm/s when its displacement is 3.30cm and 59.5cm/s when its displacement is 5.40cm .what is the oscillator's maximum speed
A positive charge of 0.800? C is located in a uniform field of 9.00×104 N/C. How close are the two charges
Unpolarized white light is incident on a po- larizer and then falls on an analyzer whose TA makes an angle of %u03B8 = 33.8%u25E6 with the polarizer, What is the fraction of the original light transmitted through both the polarizer and analyzer
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