We are building a road, and at one place we need to make a turn with a radius of 25m. The coefficient of static friction between the rubber and the material we are using is 0.6.
(a) Assuming that the road is flat through the turn, what is the maximum speed a car could have and safely navigate the turn without sliding off the road?
(b) Instead of keeping the road flat, let's bank the turn a little bit, giving the road an angle of 20° above the horizontal. With the banked turn, what is the maximum speed a car could have and still make it around the turn without sliding?

The summit of chimborazo, in ecuador, which is at a distance of about 6,384 km from the earth's center. the bottom of the mariana trench, in the western pacific ocean, which is nearly 6,370 km from the center of the earth. on the surface of earth on the equator line.

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.

Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.