When NH4NO3 is dissolved in water, the temperature of the water decreases. When NaOH is dissolved in a separate water sample, the temperature of the water increases. Based on these observations, it can be concluded that the dissolving of?

The earth's magnetic field extends: A-from the earth's core to outer space B-from the center of the earth to the sun C-from the earth's surface to the upper atmosphere

In competition, an athlete threw a flying disk 139 meters through the air. while in flight, the disk traveled at an average speed of 13.0 m/s. how long did the disk remain in the air?

When the boy crashes his bumper car into the girl's bumper car, the momentum from his car is transferred to hers. What evidence from the text supports this statement?

What is the chemical enery in the cell called?

One Newton is expressed in O A. kg*m/s. O B. kgm/s2 O c. m/s2 O D. kg/m

Which description matches up correctly with each type of particle? Alpha - no mass and no charge; beta - mass of 4 and charge of + 2; gamma - charge of - 1 and mass of 0 Alpha - mass of 0 and charge of - 1; beta - mass of 4 and charge of + 2;

Describe the factors that form deep currents

A comet is cruising through the solar system at a speed of 50000 kilometers per hour for 4 hours time. What is the total distance traveled by the comet during this time in kilometers, miles, and light years?

A gas in a closed container is heated with 12J of energy, causing the lid of the container to rise 3m with 5N of force. What is the total change in energy?

What are illuminated objects?