Physics, 23.11.2019 00:31, CaptainKiller528
An airplane flies horizontally at constant speed in a straightÂline direction. its state of motion is unchanging. in other words, it is in equilibrium. two horizontal forces act on the plane. one is the thrust of the propeller that pulls it forward. the other is the force of air resistance (air friction) that acts in the opposite direction. which force is greater?
Answers: 3
Physics, 22.06.2019 04:00, idontknow11223344
Simple machines can a. increase force only b. decrease force only c. increase or decrease force
Answers: 3
Physics, 22.06.2019 21:30, chasechevy13
Which of the following best describes the circuit shown below?
Answers: 3
Physics, 23.06.2019 00:40, maggie2018
Researchers conducted an experiment to identify the effects of three different hand sanitizers on the growth of bacteria. the researchers grew one type of bacteria in twenty-four identical covered petri dishes. then, they opened eighteen petri dishes and applied the three hand sanitizers to six petri dishes each. they left the remaining six petri dishes closed as a control group. when the researchers measured the growth of bacteria two days later, the six dishes that had no hand sanitizer showed the least amount of bacterial growth. the researchers concluded that not using any hand sanitizer would lead to the least bacterial growth. which statement best explains why the researchers’ conclusion was not justified? the experiment tested too many variables. the control group was not treated the same as the experimental group. the sample size of twenty-four petri dishes is not large enough. the single type of bacteria is not adequate to make any conclusions.
Answers: 1
An airplane flies horizontally at constant speed in a straightÂline direction. its state of motion i...