Yasmin is testing an unknown solution to determine whether it is an acid or a base. She dips red litmus paper in the solution. It remains red. What can she conclude about the sample?

Which air masses would have cold, moist air? A. continental tropical B. maritime polar C. maritime tropical D. continental polar

A motorcycle is going at a speed of 72 km/h. What distance will it reach in 20 seconds?

Sciencium-380 has a half-life of 3 days. If you started with a 100 gram sample, how much Sciencium-380 will remain after 9 days?

Carmen simplifies the expression (4y+8x+6) + 25 + (4x+6y+7). The coefficient of the variable y in her simplified answer is

Three students decided to make money shoveling snow. They shoveled snow for five days. Akeo earned $162 on Friday. Cristina earned $284 on Wednesday. Oscar earned $204 on Monday. These were the maximum amounts earned by each.

Mohammed made a chart to list examples and nonexamples of projectile motion. Which best completes the chart? a - a football thrown in the airb - a kite flying on a stringc - a golf ball rolling off a table d - water spraying from a fountain

Halley's Comet appears around the sun about once every 76 years. It passes through the part of its orbit nearest the sun in just a few months but then moves out to great distances and takes more than half a century for the rest of its orbit.

In order to hike around a portion of Lake Allatoona, a tour guide determines that he must take his group 150 m east, 60 m north, then 75 m west.

Explain what happens to light when it is refracted at the surface of water.

A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the momentum change during the collision is correct? (There could be more than one correct choice.