Calculate the work done in lifting a 500-N

barbell 2.2 m above the floor. What is the

potential energy of the barbell when it is

lifted to this height?

be bor

How many neutrons does element X have if it's atomic number is 21 and it's mass number is 75

How do scientists look for black holes in the sky

For each group of terms, write a sentence that shows how the terms are related using position: time: motion

Explain what the star looks like to Jane Explain what the star looks like to John Explain why the stars look different between Jane and john

How many atoms of Carbon (C) are in 3CO2

The instantaneous velocity of an object is the blank of the object with a blank

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

What should you always include in a great summary? (Select all that apply) A. investigation plan B. possible errors C. predictions D. new questions

What are the "base units" in the S. I. system?

What action happens if the moon spins on its axis like a top