Physics, 01.10.2019 23:00 James17syoboda
Consider two identical objects released from rest high above the surface of the earth (neglect air resistance for this question). in case 1 we release an object from a height above the surface of the earth equal to 1 earth radius, and we measure its kinetic energy just before it hits the earth to be k1. in case 2 we release an object from a height above the surface of the earth equal to 2 earth radii, and we measure its kinetic energy just before it hits the earth to be k2. 1)compare the kinetic energy of the two objects just before they hit the surface of the earth.
Answers: 2
Physics, 22.06.2019 19:00
Achild has maximum walking speed of 1.6 m/s. what is the length of the child's legs? 0.26 m
Answers: 2
Physics, 22.06.2019 19:10
Due sun 06/09/2019 11: 59 pm skip navigation questions correct q 1 [1/1] correct q 2 [1/1] correct q 3 [1/1] untried q 4 (0/1) untried q 5 (0/1) untried q 6 (0/1) untried q 7 (0/1) untried q 8 (0/1) untried q 9 (0/1) untried q 10 (0/1) grade: 3/10 print version start of questions two cyclists, 42 miles apart, start riding toward each other at the same time. one cycles 2 times as fast as the other. if they meet 2 hours later, what is the speed (in mi/h) of the faster cyclist?
Answers: 1
Physics, 22.06.2019 21:40
Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.
Answers: 3
Consider two identical objects released from rest high above the surface of the earth (neglect air r...
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