The reading on a spring balance with a holder and eight identical discs is 3.0N. Six discs are removed and the reading becomes 1.2N.
0
1
2
3
4
N spring
balance
holder
for discs
eight
discs
two
discs
0
1
2
3
4
N
What is the weight of one disc?
A 0.2N B 0.3N C 0.5N D 0.6N

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.

In an experiment, how can i change human errors? be specific.