A demonstration helps students understand a principle of roller coaster design. Which answer choice correctly describes the ball's kinetic and potential energy? A) The ball has more potential energy at position X than at position Z. B) The ball has more kinetic energy at position Y than at position W. C) The potential energy and kinetic energy of the ball are equal at position X. D) The potential energy and kinetic energy of the ball are greatest at position Z.
Answers: 3
Physics, 22.06.2019 11:30
While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you
Answers: 2
Physics, 22.06.2019 15:30
This is the number of complete movements of a wave per second.
Answers: 1
Physics, 22.06.2019 18:30
Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?
Answers: 3
Physics, 22.06.2019 20:30
Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?
Answers: 2
A demonstration helps students understand a principle of roller coaster design. Which answer choice...
Computers and Technology, 16.10.2019 05:00
Computers and Technology, 16.10.2019 05:00