The mathematical relationship between force and extension for a spring is F = -kx , where F is the restoring force, k is the spring constant and x is the extension. If a box that weighs 40 N is hung from a spring of content 400 N/m, then the extension is equal to x = -F / k = -400 / 40 = -10 cm. The negative sign simply shows the extension and restoring force are in opposite directions. The answer is 10 cm.
Answer:
3. Silver tarnishes when exposed to air and light
Explanation:
Physical properties are properties that change substances in ways that is visible to a human by using their senses (ie. see, touch, etc)
The rest of the answers are chemical properties, which cannot be seen with the human senses, and requires other special devices or techniques to tell.
-Vibilities
Answer:
C is the best suited to the characteristics given in the question
Explanation:
Agricultural chemistry studies on both agriculture which deals with the production of plants and chemistry which controls the raw materials in food and drinks. Agricultural chemistry also investigates environmental changes and emphasizes the studies to explain interactions between plants and animals in nature.
1. is "A"
2. is "A"
3. is "B"
4. is "D"