What is the minimum kinetic energy in electron volts that an electron must have to be able to ionize a hydrogen atom (that is, remove the electron from being bound to the proton) ?

Which wavelengths does the SETI program monitor for transmissions from extraterrestrials? A. X-ray B. gamma rays C. infrared emissions D. radio waves

In which equation of Newton's second law is mass assumed to be constant?

What is the second law of thermodynamics

A car slows from 22m/s to 3.0m/a at a constant rate of 2.1m/s. How many seconds are required before the car is traveling at 3.0m/s?

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

Which is an application of radio waves? allow doctors to see inside a person's body carry information between cell phones sterilize surgical instruments reheat or cook food quickly and easily

In history class, Juan learned about two sets of limestone carvings left in similar caves approximately 5000 years ago. Both caves are damp, but one cave has an average temperature of 45°C, while the other cave has an average temperature of 70°C.

A school bus full of students drives down the road. Because it is moving, it has 1. potential energy because it has the ability to take the students to school. 2. kinetic energy because it has the ability to take the students to school. 3.

How many additional valence electrons does fluorine need to have a full valence shell? A. One B. Two C. Eight D. Seven

If you double the radius of the earth and keep the mass of the earth the same, the acceleration of gravity on the surface of the earth will be approximately ...