Is it 100% sur than electron have negative charg and proton have pasitive?

1. Which of the following is a true statement concerning the electrostatic force and gravitational force acting on an electron and a proton in an atom? Fg > Fel Fel > Fg Fg = Fel We would need to know which atom 2.

A 2,294N force is applied to a 408kg mass. What is the acceleration of the mass?

Mass is a measure of the quantity of matter in an object. a. True b. False

The law of conservation of momentum states that a. the total initial momentum of all objects interacting with one another usually equals the total final momentum. b.

Suppose you have a hypothesis you believe to be correct what should you do to make you become a theory A. Write a letter to the noble prize committee B. Do the same experiment over and over again C.

What's the symbol for an ionized bromine atom?

What is the hottest layer in the Sun's atmosphere?

Which do you need to calculate the speed of a wave? A. distance and frequency B. distance and time C. time and frequency

What is one of the benefits that scientists have discovered from organisms' daily exposure to radioisotopes? 1. being able to Carbon date fossils 2. X-ray Imaging capability 3. radiation treatment for cancer 4. invention of microwave cooking

Despite valid research, in the late 1900s, women and minorities were thought to have a higher level of intelligence than white males