Forces that act in equal and opposite directions on an object

A 1.34 kg ball is connected by means of two massless strings, each of length L = 1.70m, to a vertical, rotating rod. The strings are tied to the rod with separation d=1.70 m and are taut. The tension in the upper string is 35 N.

Scientific inquiry incorporates many scientific methods. A) True B) False

Several students in the group made comments to the Coach about the back pack. Which student has the correct analysis of the forces and motion of the back pack?

A car slows down from 23 m/s to rest in a distance of 85 m. what was its acceleration, assmed constant

A particular star cluster contains stars all with the same apparent magnitude of + 4. Near the cluster (and at the same distance from the Earth) is a single star with an apparent magnitude of + 1.

Support that P (e) = 0.76, P (F) = 0.45, and P (E and F) = 0.32. What is P (E or F) ?

A magnetic field can be diverted by a separate piece of ferromagnetic material

What is the speed, in m/s, of a wave on a cord if it has a wavelength of 4 m and a period of 0.5 s?

What three machines or devices depend of gravity to work?

Quantum effects can be seen at the atomic and nano levels. Why is nanotechnology more useful than atomic technology for creating new products? It is too small for dangerous quantum effects to apply. It is too large for most quantum effects to apply.