When did the last mass extinction occur?

What type of raido waves have the highest frequency and are used in radar detection?

Arrange the stars based on their temperature. Begin with the coolest star, and end with the hottest star. Tiles yellow, red, blue, white

Which kind of wave would be observing in outer space between planets where there is little matter

In the two-stage cooling method, what is the maximum amount of time allowed to cool food from 135 degrees F or more to 70 degrees F or less?

What's the difference between a scientific law and a scientific theory?

What must be your car's average speed in order to travel 235km in 3.25 hours?

At a certain location, the horizontal component of the earth's magnetic field is 2.5 * 10-5 T, due north. A proton moves eastward with just the right speed for the magnetic force on it to balance its weight. Find the speed of the proton.

An acrobatic airplane performs a loop at an airshow. The centripetal acceleration the plane experiences is 14.7 m/s2. If it takes the pilot 45.

Which of the following was NOT an outcome of Bacon's rebellion? A. A more direct focus on the "Indian Problem" B. A more focused plain to isolate black slaves from white servants C.

A science class did an investigation to see how many breaths it took for each student to blow up a balloon. Jason blew up his balloon with the fewest breaths. Which of these might explain why Jason took fewer breaths to blow up his balloon? A.