As the electrical energy of lightning is discharged into the air,

a. the air cools and condenses rapidly.

c. the air cools and expands rapidly.

b. the air heats and condenses rapidly.

d. the air heats and expands rapidly.

A train starts from rest and accelerates uniformly, until ithas traveled 5.6 km and acquired a velocity of 42 m/s. Thetrain then moves at a constant velocity of 42 m/s for 420 s. The train then slows down uniformly at 0.

Alcohol begins to affect your brain when

What is one fun fact about both rubies and sapphires?

A parallel-plate capacitor in air has a plate separation of 1.25 cm and a plate area of 25.0 cm2. The plates are charged to a potential difference of 244 V and disconnected from the source. The capacitor is then immersed in distilled water.

A bug flies at a velocity of 0.75 m/s into an oncoming breeze blowing at 0.25 m/s. What is the resultant velocity of the bug? A 0.0 M/S B0/25 M/S C 0.50 M/S D 1.0 M/S

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?