Quentin is a crime scene investigator. He believes a violent crime may have occurred in the bedroom of an apartment but he sees no blood. Which of the following chemicals reacts with iron produces a glowing blue color if blood is present

Which statement best describes the direction of the buoyant force on any object? A. opposite the force of gravity B. in the same direction as the weight C. in the direction of motion of the object D. opposite the direction of motion of the object

Consider the video demonstration that you just watched. A more complete explanation of what you saw will be possible after covering Newton's laws.

This gas is found in small quantities in the lower layers of the stratosphere this gas is extremely important because it absorbs ultraviolet radiation A. Argon B. Carbon dioxide C. Nitrogen D. Ozone

From which sphere does most water evaporate? A. Lithosphere B. Hydrosphere C. Biosphere D. Atmosphere

In most circumstances, the normal force acting on an object and the force of static friction do no work on the object. However, the reason that the work is zero is different for the two cases.

Which best compares the particles of the substance when it is in region 1 with the particles of the substance when it is in region 3? The particles are slower in region 3. The particles are more orderly in region 1.

What is negative acceleration?

A wave with a period of 0.008 second has a frequency of A. 80 Hz. B. 125 Hz. C. 800 Hz. D. 12.5 Hz.

IF a particular galays has a total mass of 10 to the 59 grams and the average star in that galaxy has a mass of 10 to the 34 grams, approximately how many stars are there in that galaxy?

Gneiss is a metamorphic rock that is formed when granite is subjected to extreme heat and pressure. This occurs in when: shallow seas evaporate mountains collide fossil sediments form layers magma cools and hardens underground