What is the energy difference between the second excited state and first excited state of an electron in the "box" of size L=1nm? A) 1.9 eV B) 1.1 eV C) 0.6 eV D) 0.3 eV E) 0.2 eV

4. Think back to Coulomb's Law. Two coins with identical charges are placed on a lab table 1.35 m apart. A. If each coin experiences a force of 2.0 N because of the presence of the other coin, calculate the charge on each coin. B.

A small metal block with mass of 140 g sits on a horizontally rotating turntable. The turntable makes exactly 2 revolutions each second. The disk is located 6 cm from the axis of ration of the turntable. Answer each of the following question: a.

A 4.5-m-long wooden board with a 24-kg mass is supported in two places. One support is directly under the center of the board, and the other is at one end. What can be said about the forces exerted by the supports?

How Is budding different from fertilization

Find the equivalent resistance of a series circuit with a voltage of 12 V and three resisters each with 5 ohms of resistance.

Another word for character in sports is "sportsmanship." - True False

Assume an 8-kg bowling ball moving at 2m/s bounces off a spring at the same speed that it had before bouncing. What is the momentum of the recoil?

A physics book slides off a horizontal tabletop with a speed of 3.90 m/s. It strikes the floor in 0.350 s. Ignore air resistance. Find the height of the tabletop above the floor.

A guitar string 66 cm long vibrates with a standing wave that has two antinodes. 1. Which harmonic is this 2. what is the wavelength

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω, XL = 100 Ω, XC = 36 Ω, and Z = 80 Ω. What is the voltage drop across the capacitor?