Acceleration a has the dimensions of length per time squared, speed v has the dimensions of length per time, and radius r has the dimension of length. What are the dimensions of the following combinations of quantitiesa=vr

D=1/2 (Vf+Vi) t solve for t

Which discovery did Galileo make to support the theory that the planets, including Earth, orbit the Sun? A) Venus has phases. B) The orbits of the planets are elliptical C) Earth's rotation causes the Sun to rise in the sky.

Consider a 4-mg raindrop that falls from a cloud at a height of 2 km. When the raindrop reaches the ground, it won't kill you or even bruise you because its terminal velocity is just 10 m/s.

In some circumstances, science will answer questions about what is good and what is evil. True False

What kinds of ions do acids and bases form in water

As part of a circus performance, a man is attempting to throw a dart into an apple which is dropped from an overhead platform. Upon release of the apple, the man has a reflex delay of 215 milliseconds before throwing the dart.

A train travels 90 kilometers in 1 hour, and then 82 kilometers in 5 hours. What is it's average speed?

3. A hydraulic lift is used to jack a 950-kg car 45 cm off the floor. The diameter of the output piston is 23 cm, and the input force is 375 N. a. What is the area of the input piston? (10pts) b.

An electric current in a metal consists of moving (A) Protons (B) neutrons (C) electrons

How does the idea of rotating disk in the nebular model explain certain observed celestial phenomena?