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A girl delivering newspapers covers her route by traveling 10.00 blocks west, 4.00 blocks north, and then 5.00 blocks east.
(a) What is her resultant displacement?
(b) What is the total distance she travels?
Consider a nonconducting rod that would make a great wire except for the fact that it is nonconducting, Find the electric field strength at a point on the axis of the rod
In an integrated circuit, the current density in a 2.9 ??m?thick× 71 ??m?wide gold film is 7.7×105A/m2, How much charge flows through the film in 15 min
An unstretched elastic spring has a mass M = 3.75 kg and a length of l0 = 0.525 m. What is the elastic potential energy of the spring
A 1.8 cm high object is placed 30 cm from a concave mirror with radius of curvature 30 cm. Determine the object's image size
At one instant a bicyclist is 25m due east of a park's flagpole, going due south with a speed of 8 m/s. Then, 11 s later, the cyclist is 65m due north of flagpole, going due east with a speed of 10 m/s.
A particular guitar string is supposed to vibrate at 203 Hz, other than it is measured to actually vibrate at 208 Hz. By what percentage must the tension in the string be changed to get the frequency to the correct value.
Sam, whose mass is 80kg , takes off across level snow on his jet-powered skis. The skis have a thrust of 250N and a coefficient of kinetic friction on snow of 0.1, What is Sam's top speed
A car (mass 930 kg) is traveling with a speed of 48 mi/h. A bug (mass 6 mg) is traveling in the opposite direction. What speed would the bug need
You want a screen to be illuminated with an intensity of 440 mW/m2. The screen is 12.97 m away from the light source, What is the rms value of the electric field at the screen
A ray of sunlight hits a frozen lake at a 43.9° angle of incidence. At what angle of refraction does the ray penetrate the ice
The emissivity of her skin is 0.750 and its surface area is 1.30 m2. How much time would it take for her to emit a net radiant energy from her body that is equal to energy contained in this dessert.
A basketball player grabbing a rebound jumps 73.3 cm vertically. How much total time (ascent and descent) does the player spend (a) in the top 13.1 cm of this jump and (b) in the bottom 13.1 cm? Do your results explain why such players seem to han..
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