Physics, 15.03.2020 00:11 johnbuffit08
When antibiotics were first developed most infection is diseases could be controlled by them today certain bacteria resistant to many antibiotics one possible explanation for this change is
A. The antibiotics kill most of the bacteria that did not have a genetic variation for resistance
B. The bacteria needed to change in order to produce more antibiotics
C. Some of the bacteria learned how to resist the antibiotics
D. Antibiotics have become weaker due to increased prices
Answers: 3
Physics, 21.06.2019 23:20
In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.
Answers: 1
Physics, 21.06.2019 23:30
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
Answers: 1
Physics, 22.06.2019 05:00
Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.
Answers: 1
When antibiotics were first developed most infection is diseases could be controlled by them today c...
English, 20.01.2020 22:31
Mathematics, 20.01.2020 22:31
Mathematics, 20.01.2020 22:31
English, 20.01.2020 22:31
History, 20.01.2020 22:31
History, 20.01.2020 22:31
Mathematics, 20.01.2020 22:31
Social Studies, 20.01.2020 22:31