What wavelength? should the astrophysicist look for to detect a transition of an electron from the n=7 to the n=3 level?

A battleship simultaneously fires two shells toward two identical enemy ships. One shell hits ship A, which is close by, and the other hits ship B, which is farther away. The two shells are fired at the same speed.

435 millivolts equals how many volts

Meteors and Comets Video: Why is the moon covered with craters from the impact of space rocks, but the earth isn't? Question 9 options: A. The moon doesn't have an atmosphere to burn up the rocks before hitting the surface. B. Scientists aren't sure.

A 0.40 kg toy car moves at constant acceleration of 2.3 m/s2. determine the net applied force that is responsible for that acceleration.

Transverse waves are to radio waves as longitudinal waves are to (1) light waves (3) ultraviolet waves (2) microwaves (4) sound waves

50g of ice at 0°C is mixed with 50g of water at 80°C, what will be the final temperature of a mixture in degrees C?

If the Density of an object is 5.2 g/cm3, and its volume is 3.7 cm3, what is its mass

The direction of the magnetic field is determined by which of the following? A. energy of the current B. magnetic domain C. magnetic force D. direction of the current

A ship is traveling at 154 m/s and accelerates at a rate of 1.80 m/s^2 for 1 minute. What will its speed be after that minute? Calculate the answer in both meters per second and kilometers per hour.

Gerry is looking at salt under a powerful microscope and notice a crystalline structure. what can be known about the salt sample that Gerry is looking at