A 500g sample of Potassium-40 is left to decay radioactively. After 3.9 x 109 years, about how many grams of Potassium-40 are expected to remain? [The half-life of Potassium-40 is 1.3 x 109 years.]

Which of these sensors would be least likely used as an input sensor? A. RPM B. Throttle position C. Fuel D. Engine-coolant temperatur

A scientist builds 5 skateboards using 5 different brands of wheels. He then tests how far each skateboard roles without stoping. What is the independent variable in this experiment

Which of this following have the minimum frequency in their sound? a]baby boy b]baby girl c]a man d]woman

So to deal with the irrational belief in REBT, we must Group of answer choices A. Consult with a friend and get their feeback B. Dispute the beliefs by asking if these are true and examining the evidence C. Seek mental health counseling D.

How do high-energy electrons from glycolysis and the krebs cycle contribute to the formation of atp from adp in the electron transport chain?

A small object placed in the gravitational field of a more massive object will a. accelerate toward the more massive object. b. accelerate away from the more massive object. c. move toward the more massive object at a constant speed. d.

A 0.15 kg baseball falls to the ground with an acceleration of 9.8 m/s2. What is the weight of the baseball? A. 1.47 N B. 1.49 N C. 1.53 N D. 1.64 N

What is the gravitational force excerted on an object called?

What two variables is acceleration dependent on? What is the relationship between these variables and acceleration? (i. E. If you increase one variable what happens to the acceleration?)

1 A plane moving at 30m/s drops a load 200m down to the ground. How long did it take to hit the ground.