What percent of my Iodine-131 sample will be left after 7 half-lives?

How deep would you have to go in a mine shaft to reach a pressure of 2.00 atm? (Assume the density of air remains a constant 1.29 kg/m^3.) (Unit = m)

If the electrons in an atom were stationary, they would be ___ the nucleus

Which is a characteristic of all ions? a. They are made of one type of atom. b. They have one overall charge. c. They are made of two or more types of atoms. d. They have two or more overall charges.

During a race, a dragster is 200m from the finish line when something goes wrong and it stops accelerating. It travels at a constant velocity of 45 m/s for 3 seconds to try to finish the race.

In a fission reaction of U-235 there was a release of 9.20x1011kJ of energy. What amount of mass in grams would have been lost? Recall that c = 3x108 m/s. Select one of the options below as your answer: A. 1.02 x 10-2 B. 1.02 x 101C. 1.02 x 109 D. 8.

A 500-kilogram sports car accelerates uni- formly from rest, reaching a speed of 30 me- ters per second in 6 seconds. What distance has the car traveled during the 6 seconds?

What is efficiencywhat is the formula of mechanical advantage and velocity ratio of labour

What is the wavelength of an ekectromagnetic wave that has a frequency of 40,000 hz? the speed of light is 3x10^8 m/s?

Witch of the following is an example of a pull

Can two like charges attract each other