Physics, 13.05.2021 20:30 jmathematics7806
Because burning fossil fuels creates much pollution, alternatives are being investigated. What might limit the use of wind as a major energy source?
F Turbines and generators in the wind machines create electricity.
G The strength of the wind varies.
H Wind power does not create pollution. O Wind machines have huge blades to capture the wind.
Answers: 1
Physics, 22.06.2019 03:00
Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?
Answers: 3
Physics, 22.06.2019 08:30
How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects
Answers: 2
Physics, 22.06.2019 10:30
You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?
Answers: 2
Physics, 22.06.2019 12:50
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
Because burning fossil fuels creates much pollution, alternatives are being investigated. What might...
History, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Physics, 23.09.2020 14:01
Physics, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Arts, 23.09.2020 14:01
Biology, 23.09.2020 14:01
Chemistry, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Biology, 23.09.2020 14:01
Computers and Technology, 23.09.2020 14:01
History, 23.09.2020 14:01
Mathematics, 23.09.2020 14:01
Biology, 23.09.2020 14:01
English, 23.09.2020 14:01