A 500.-kilogram roller coaster starts from rest at the top of an 80.0-meter hill. What is its speed at the bottom of this hill?

Is uranium elemant or compound

What is a nuclear bulge? a) The bulging corner of a spiral galaxy consisting of gas in the shape of a spiral sphere that circles a galaxy b) The bulging center of a spiral galaxy consisting of debris in the shape of a flattened sphere that circles a

What's two powerful forces of nature caused by plate tectonics

If an organism didn't have DNA, it would be missing which sign of life? a, b, c

How much potential energy does a 40-kg medicine ball gain when it is lifted 5 m? Use the formula: GPE = mass X gravity (9.8 m/s2) X Height Question 16 options: A 20.4 J B 100 J C 1960 J D 200 J

A germ is also called a microorganism or a microbe. True False

What is 1.33Ω plus 2Ω?

As a fire truck approached Mary, the pitch of the siren got higher. once the fire truck passed and moved away, the sirens pitch got lower. this change in pitch is because in the sound waves

Find the magnitude of the sum of these two vectors

Light waves that cross from an air medium to a water medium will A. O be focused into a straight line. B. O lose energy and dissipate. C. O change length and direction. D. O reflect off the water's surface.