Describe three safety procedures you should always follow when conducting a scientific investigation.

Why it is advise to clean the ends of connecting wires before connecting them?

Why does water break apart rock when it freezes? A. because it expands B. because it contracts C. because it evaporates D. because it dissolves rock

For questions 1-10 fill in the blank with the letter of the description that best matches the term A. the player responsible for the area between 2nd and 3rd base B. The player on the mound in the middle of the field C.

A 30.0-kg box is being pulled across a carpeted floor by a horizontal force of 230 N, against a friction force of 210 N. What is the acceleration of the box? How far would the box move in 3 s, if it starts from rest?

A charge Q generates an electric field of strength E at a distance d away. Determine the electric field strength at d and 2d, respectively:

Aliens from planet Moby have three alleles for skin color: R (red) W (white) and B (Blue). If all of these alleles are codominant and aliens on planet moby can only inherit two alleles for a gene, what are the six possible genotypes for skin color

The difference between two numbers is 15. When twice the smaller number is subtracted from three times the larger number, the difference is 58. What is the larger number?

Vector A makes equal angles with x, y and z axis. value of its components (in terms of magnitude of vector A will be?

What has become an important alternative to Piagetian approaches?

How would life on earth be different if earth's axis were not tilted with respect to its orbit? A. There would be no seasons. B. There would be no day and night. C. All places would have the same climate. D. The seasons would be much shorter.