Physics, 28.01.2020 04:31 rakanmadi87
Bio human energy vs. insect energy. for its size, the common flea is one of the most accomplished jumpers in the animal world. a 2.0-mm-long, 0.50-mg flea can reach a height of 20 cm in a single leap. (a) ignoring air drag, what is the takeoff speed of such a flea? (b) calculate the kinetic energy of this flea at takeoff and its kinetic energy per kilogram of mass. (c) if a 65-kg, 2.0-m-tall human could jump to the same height compared with his length as the flea jumps compared with its length, how high could the human jump, and what takeoff speed would the man need? (d) most humans can jump no more than 60 cm from a crouched start. what is the kinetic energy per kilogram of mass at takeoff for such a 65-kg person? (e) where does the flea store the energy that allows it to make sudden leaps?
Answers: 3
Physics, 21.06.2019 22:30
Solar cell a produces 100 joules of energy, when a light source is shown on it for 3 minutes. solar cell b produces 200 joules of energy when the same light source is shown on it for 5 minutes. which solar cell works better? a) solar cell b, because it produces more energy. b) solar cell b, because it generates more power. c) solar cell a, because it produces energy quicker. d) solar cell a, because it generates a greater wattage. eliminate
Answers: 2
Physics, 22.06.2019 09:00
A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?
Answers: 1
Physics, 22.06.2019 23:00
1700 j of energy is lost from 0.14 kg object , the temperature decreases from 50°c to 45°c what is the specific heat of this object, amd what is the material ?
Answers: 1
Physics, 22.06.2019 23:30
The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength
Answers: 2
Bio human energy vs. insect energy. for its size, the common flea is one of the most accomplished ju...
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