Which of these describes an exothermic reaction?

1. energy is released by the reaction

2. energy is absorbed by the reaction

3. no energy is transferred by the reaction

4. energy is created in the reaction

What is the mass of an object if a force of 34 N produces an acceleration of 4 m/s/s?

An insulated lunch bag keeps food warm by

Earth's mass is approximately 81 times the mass of the moon. if earth exerts a gravitational force of magnitude f on the moon, the magnitude of the gravitational force of the moon on earth is

Write a paragraph detailing the characteristics of tropical, temperature, and polar climates

A driver in a car traveling at a speed of 21.8 m/s sees a cat 101m away on the road. How long will it take for the car to accelerate uniformly for 3.2 km in 3.5 min. How fast (in m/s) is the car moving after this time?

What does deltaX mean in physics?

Which activity involves using fossil fuels directly or indirectly? 1) eating fresh fruit for a snack 2) cooking hot dogs on a campfire 3) using crayons to color 4) walking to school

Which of the following objects would have the most inertia? A. A sphere with a radius of 5 cm and a mass of 34 grams. B. A sphere with a radius of 4 cm and a mass of 15 grams. C. A sphere with a radius of 8 cm and a mass of 27 grams. D.

A boy slides a book across the floor using a force of five and over a distance of 2M what is the kinetic energy of the book after he slides at assume there is no friction

Where would aliens be if they really do exist here on Earth?