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Your moving car contains a lot of energy as kinetic energy - energy of motion.
If your car is not a hybrid, when you stop by stepping on the brake, your energy of motion is transformed by friction (in the brakes, against the road) into thermal energy. It can't be re-used. Estimate how many gallons of gasoline you could save each time you stopped your car from a speed of 100 km/hr if you could store that energy somehow and re-use it. [Hint: One gallon of gasoline contains about 1.2 x 109 Joules of energy. (1 Joule = 1 kg-m2/s2).] Be sure to clearly state your assumptions and how you came to the numbers you estimated, since grading on this problem will be mostly based on your reasoning, not on your answer.
Suppose that electrical energy costs about $0.098/(kW · hour), If the electric potential provided by the electric company was 120 V, what was the average current in all circuits in the author's house
A muscle-tendon unit is composed of a tendon with a stiffness of 6640N/m, a muscle with a stiffness of 9070N/m, What is the stiffness of the muscle-tendon unit
A particular engine has a power output of 4.27 kW and an efficiency of 22.2%. The engine expels 7236 J of energy as heat in each cycle. Find the energy absorbed in each cycle
An inexpensive depth gauge used by scuba divers consists of a small diameter tube wrapped around the rim of a dial. An opening or port at one end allows water to enter when submerged.
An 8.70-kg block slides with an initial speed of 1.80 m/s down a ramp inclined at an angle of 22.2 deg with the horizontal. Use energy conservation to find the distance the block slides before coming to rest
Azelastine hydrochloride is an antihistamine nasal spray. A standard size container holds one fluid ounce (oz) of the liquid. You are searching for this medication in a European and are asked how many milliliters (mL) there are in 3.7 fluid ounces..
an oil-filled capacitor has square parallel plates 23 cm on a side separated by 0.48 mm. when the capacitor is charged
What minimum constant acceleration does the aircraft require if the aircraft is to be airborne after a takeoff run of 222m.
What is the electric field amplitude at a distance of 24.8 cm from the source - How does the speed of the emerging beam compare to the speed in the glass?
question1imagine you are on a planet similar to earth where an acceleration of gravity is approximately 10 ms2.the
What is the kinetic energy of a 2,030 kg car that is traveling at 98.0 km/h? answer must be given in kJ, How much work was done to give the car this kinetic energy, assuming that the car starts from rest? Answer must be given in kJ and How much w..
A proton with a mass of 1.67 x 10^-27 kg and charge on +1.6 x 10^-19 C, Find the time for the proton to make on complete circular orbit
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