A sample contains 36g of a radioactive isotope. how much radioactive isotope remains in the sample after 3 half-lives

In which structure would the egg need to be fertilized?

If a radioactivite material has 1 hour half-life, how much of a 1000 g sample will be left after 6 hours

Which option best describes the function of a switch? A. An open switch prevents electric flow, and a closed switch allows electric flow B. An open switch strengthens electric flow, and a closed switch weakens electric flow C.

How do you know when the transfer of thermal energy has ended?

What weapon would be the most easy and effective when killing a zombie? (close range) A. Fire axe B. Hand gun C. Machety D. Baseball bat

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False

A baseball has mass 0.145 kg. (a) If the velocity of a pitched ball has a magnitude of and the batted ball's velocity is in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.