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To test the resiliency of its bumper during low-speed collisions, a 1 110-kg automobile is driven into a brick wall. The car's bumper behaves like a spring with a force constant 6.00 106 N/m and compresses 3.1 cm as the car is brought to rest. What was the speed of the car before impact, assuming no mechanical energy is transformed or transferred away during impact with the wall?
___________ m/s
A laser is mounted in air, m above the edge of a large, horizontalpane of crown glass (n = 1.520), as shown in thedrawing. The laser is aimed at the glass in such a way that the reflected beam is 100% polarized. Detemine thedistance d between the ..
A one-turn circular loop carrying a current of 2.5 Amp is located in a uniform magnetic field of 0.85 T, Find the length of the wire used to form the loop
Suppose in measuring e/m of the electron you observed that electrons accelerated through a voltage acquire velocity of v = 0.03 c.
A 2.00 mol sample of a diatomic ideal gas expands slowly and adiabatically from a pressure of 5.056 x 105 pascals and a volume of 12.0 L to a final volume of 30 L. What is the final pressure of the gas?
Two students are on a balcony a distance h above the street. One student throws a ball vertically downward at a speed vi; at the same time, the other student throws a ball vertically upward at the same speed. Answer the following symbolically in t..
An object is a distance 6f from a converging lens. construct a ray diagram showing the location and orientation of the image
A pendulum swings in a lab room by a period of 2 seconds. You place that same pendulum on the top of a vertical pole and it swings by a period of 3 seconds. How high is the pole? Now you place that same pendulum in a cavity at the center of earth, wh..
An object is placed 45 cm from a concave mirror of radius 92 cm. (a) Find the location of the image. (Enter in cm. Use a negative number if the image is behind the mirror) cm (b) What is the magnification of the mirror? Is the image real or virtual? ..
A 70 kilogram person is walking up a 15 % grade hill. Plot the fuel consumption of the person in watts vs. speed from 1 to 7 kilometers per hour in steps of 1. Where does the lost energy go
A firehouse shoots water at a speed of 50 m/s from a ground level at an angle of 60 above the horizontal. how far above the ground does it hit the building
An electron with speed v0 = 1.6 multiplied by 106m/s is traveling parallel to an electric field of magnitudeE = 7.7 multiplied by 103 N/C. How far will the electron travel before it stops
A concave mirror has a focal lenth of 50 cm. How far form the mirror should one's face so that the image is doubled the size of the actual face? Is image real or virtual , upright or inverted?
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