Which of the following is NOT a true statement about Marie Curie?

a. She was from Warsaw, Poland.

b. She was particularly well known for her work in the field of radioactivity.

c. She was married to Louis Pasteur.

d. She received two Nobel prizes.

A person drives 70 km/h in 1 hour to the east, then 80 km/h for another hour to the east. What was the average velocity for those 2 hours?

A car traveling 90km/hr is 100m behind a truck traveling 50km/hr. How long will it take the car to reach the truck

An aluminium pot whose thermal conductivity is 237 W/m. K has a flat, circular bottom with diameter 15 cm and thickness 0.4 cm. Heat is transferred steadily to boiling water in the pot through its bottom at a rate of 1400 W.

Which statements describe half-life? Check all that apply. Each isotope has a half-life that is different from the half-life of other isotopes. All isotopes have the same half-life. The half-life of an isotope is always the same.

What can cause a production possibilities curve to move to the right? A the population is growing increasingly old B an epidemic kills thousands of young men and women C thousands of people move out of the country D) anew invention lowers the cost

A group of two or more stars is called a A. solar system B. neutron star C. protostar D. star system

Which of the following is an example of potential energy? View Available Hint (s) Which of the following is an example of potential energy?

What type of material is wrapped around an object could cause the object to lose the most heat

What is the importance of the ozone layer?

Which of the following is an example of plasma?