Whats the origin of all stars?

a) supernova

b) dwarfs

c) protostars

d) nebulae

Where are the two lenses located in a compound microscope use in most classrooms today?

What is a consequence of the second law of thermodynamics? - Activation energy from the environment is required for every energy transfer. - Energy cannot be created or destroyed but it can be transferred.

Which method involves using tools to control invasive species? A. biological B. mechanical C. chemical D. manual E. monitoring

5. Where would a roller coaster have the greatest potential energy? A. at the top of a hill B. halfway up the hill C. halfway down the hill D. at the bottom of the hill

What do you do to increase the energy of an object

A baseball player was hit by a baseball in the left eye and complains of double vision. What should you do? A. Restrict spinal movement B. Assess pupillary response C. Perform a detailed exam D. Apply ice to orbit

An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity

How did astronomers precisely determine the length of an Astronomical Unit in the 1960s?

If a 1.50 kg mass revolves at the end of a string 0.50 m long, and its tangential speed is 6.0 m/s, calculate the centripetal force.

Balanced forces can change an object's direction. A. True B. False