Bill leaves his 60 W desk lamp on every day, including weekends, for eight hours. After one month (30 days), how much total energy has been used by the lamp? Round your answer to the nearest whole number.

Oxygen-18 is a naturally-occuring, stable isotope and is commonly used is scientific studies as a tracer. Using the periodic table, predict the number of electrons, neutrons, and protons in oxygen-18.

Which of these best describe the chemical composition of asteroids? select all that apply. a. ice b. silicate c. hydrogen d. carbon-based

Starting from rest near the surface of the Earth, a 25-kg beam slides 12 m down a vertical pine tree, and has a speed of 6 m/s just before hitting the ground.

What is physical fitness?

List of most launched orbital launch vehicles

Winston stands on the edge of a building's flat roof, 12 m above the ground, and throws a 147.0-g baseball straight down. the ball hits the ground at a speed of 18 m/s. what was the initial speed of the ball?

When is the zebra in motion when it is not moving

1) What happens when two negatively charged tape strips are placed near each other?

Claudia throws a baseball to her dog. Which free-body diagram shows the baseball when it's flying horizontally in midair? (Assume no air resistance.)

What causes an air conditioned to turn on