A 160-lb person burns about 2900 calories to run a marathon. how much energy is burned in kj? assume two significant figures.

What are some materials that organisms get from their environment

Atoms form chemical bonds to satisfy the blank rule and become blank

What personal experiences have you had with watching a substance change from one phase to another?

How do organisms acqire the energy they need to live?

You poll students on whether they prefer hotdogs, chicken fingers, salad, or spaghetti for lunch. Which graph would you use to show your results? A. Bar graph B. Line graph C. Cumulative frequency graph D. Histogram SO

How would an unbalanced chemical equation convey misleading information about what took place during a chemical reaction?

A car rounds a 75-m radius curve at a constant speed of 18 m/s. a ball is suspended by a string from the ceiling the car and moves with the car. the angle between the string and the vertical is:

Emission of light from an atom occurs when an electron

Which is an example of transfroming potential energy to kinetic

Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that's above the ball.