Answers: 2
Physics, 21.06.2019 13:00, demarcuswiseman
During your summer internship for an aerospace company, you are asked to design a small research rocket. the rocket is to be launched from rest from the earth's surface and is to reach a maximum height of 910 m above the earth's surface. the rocket's engines give the rocket an upward acceleration so it moves with acceleration of 16.0 m/s2 during the time t that they fire. after the engines shut off, the rocket is in free fall. ignore air resistance.
Answers: 1
Physics, 22.06.2019 03:00, jdkrisdaimcc11
Do you agree with scientist’s prediction about the warming of alaska and other polar regions?
Answers: 2
Physics, 22.06.2019 12:50, natalyarenassalgado
Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i. e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i. e. include the distance traveled to the first encounter)
Answers: 2
The radius of he Earth orbit around the sun (assumed circular) is 1.50 X 10^8km, with T=365d. What i...
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