Physics, 22.05.2020 14:58 whocares1234
We drop a 60 gram tennis ball from the top of the Burj Khalifa (828 m).
How fast will it hit the ground if there's no air resistance?
How fast will it hit the ground if the air resistance takes away 200 Joules of energy?
How high will it bounce back if the energy lost during the bounce is 50 Joules?
Calculate the ratio of the output energy vs the input
energy (the efficiency)
Answers: 1
Physics, 22.06.2019 19:30, FireFlight
Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.
Answers: 2
Physics, 22.06.2019 23:00, destinybonmer
1which body contains the majority of the mass in the solar system earth jupiter the moon the sun 2 what keeps the objects in the solar system such as planets orbiting around the sun the force of gravity the galaxy exerts on all objects within it including the solar system the great distance between the sun and the planets the sun's nuclear fusion which acts on each object the gravitational force between the sun and each object in the solar system
Answers: 2
We drop a 60 gram tennis ball from the top of the Burj Khalifa (828 m).
How fast will it hit th...
How fast will it hit th...
Mathematics, 05.07.2020 01:01
Mathematics, 05.07.2020 01:01