Jim is playing with a 1-meter-long pendulum that is hooked
2 meters above the ground. he lifts the pendulum's bob to a height of 2 meters above the ground and then releases it. potential energy is assigned zero value at the ground level. which statement is true about this problem?
a. at the lowest position of the bob, the ke is equal to zero.
b. at the highest position of bob, pe is equal to zero.
c. at the highest position of the bob, the ke is equal to zero.
d. at all the positions except the highest positions the pe is zero.
Answers: 3
Physics, 21.06.2019 13:10, mariaveliz2201
Abox is pushed down at an angle of 32 degrees on a rough surface. the box moves to the right. what equation should be used to find the net force in the y-direction? answers: a. fnet, y = fn - fgb. fnet, y= fp - ffc. fnet, y = fn-fg- fpcos(32)d. fnet, y = fn-fg-fpsin(32)
Answers: 2
Physics, 22.06.2019 07:00, jeremiahphillip4396
The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.
Answers: 1
Physics, 22.06.2019 14:00, 6224968918
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
Jim is playing with a 1-meter-long pendulum that is hooked
2 meters above the ground. he lifts...
2 meters above the ground. he lifts...
Mathematics, 06.09.2019 01:10
Mathematics, 06.09.2019 01:10
English, 06.09.2019 01:10
English, 06.09.2019 01:10
Chemistry, 06.09.2019 01:10