4. What is the charge on the leaves of an electroscope if a negatively charged rod is moved near
the top of the electroscope? *
(10 Points)
A)Positive
B)Neutral
C)Negative

Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?