24. What determines an element's chemical properties?

A

True or False: The pressure exerted by a moving stream of fluid is less than the pressure exerted by the same fluid when it is not moving

Which of the following is an example of homeostasis? O A. If you are sleepy, you can drink coffee to stay awake. O B. When you drink a lot of water, you urinate (pee) more than usual O C.

A trolley with a mass of 15 kg. is accelerated at 3 m/s. What forces needed?

A carnot heat engine has an efficiency of 0.800. if it operates between a deep lake with a constant temperature of 280.0 k and a hot reservoir, what is the temperature of the hot reservoir?

Which is not part of John Dalton's atomic theory? a. All elements are composed of atoms. b. Atoms of different elements have different masses. c. All atoms of the same element have the same mass. d. Atoms are made up of smaller particles.

A sound from a source has an intensity of 270 db when it is 1 m from the source. what is the intensity of the sound when it is 3 m from the source?

What experimental term is it when a ruler is dropped to the floor?

Where is most of the energy from incoming waves focused? A. spit B. headland C. underwater D. barrier beach

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?