Which of these statements is correct about newton's first law of motion?
a. it states...
Physics, 07.10.2019 08:10 supermkimbrel
Which of these statements is correct about newton's first law of motion?
a. it states the meanings of motion and force.
b. it justifies the meanings of motion and force.
c. it explains the relationship between motion and force.
d. it describes the relationship between motion and force.
Answers: 1
Physics, 22.06.2019 00:30
What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds
Answers: 1
Physics, 22.06.2019 19:30
A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.
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
Physics, 22.06.2019 22:00
If a hiker that weighs 600 newtons climbs a 50 meter hill, how much gravitational potential energy has the hiker gained?
Answers: 1
Arts, 07.10.2019 20:30
History, 07.10.2019 20:30
Arts, 07.10.2019 20:30
History, 07.10.2019 20:30
History, 07.10.2019 20:30
History, 07.10.2019 20:30
Mathematics, 07.10.2019 20:30
Mathematics, 07.10.2019 20:30
Spanish, 07.10.2019 20:30
Health, 07.10.2019 20:30
Mathematics, 07.10.2019 20:30