A sphere has a charge of + 12µC. How many electrons were removed from the sphere?

a. 7.5 X 1013

b. 7.5 X 1019

c. 4.8 X 1025

d. 12 x 10-6

The first law of thermodynamics states that E=Q-W. How is this also a statement of the principle of conservation of energy?

According to universal gravitation, both mass and air resistance affect the gravitational attraction between objects

The slope of a speed-time linear graph is?

The plane flight covers 400 miles in the first hour. As you approach the landing site, it takes you an hour to cover the last 200 miles. This is an example of Positive Acceleration Velocity Instantaneous Speed Negative Acceleration

The electric potential energy stored in the capacitor of a defibrillator is 73 j, and the capacitance is 120 f. what is the potential difference that exists across the capacitor plates?

Why is the thickness greater for the bass strings of a guitar than for the treble strings?

An atom of helium and one of argon are singly ionized - one electron is removed from each. The two ions are then accelerated from rest by the electric field between two plates with a potential difference of 150 V.

Comparing and contrasting ionic and covalent bonds?

The difference between the speed of sound n air at 0°C and the speed of sound in air at 20°c is that ... A. Cooler air molecules move more slowly and respond less readily to the energy of a sound wave. B.

Give the symbols for 4 species that are isoelectronic with the telluride ion, te2-.