How many neutronss are in an atom of oxygen with a mass number of 18?

The wavelength of a light wave can be used to measure which of the following? A. The direction the wave is traveling B. How many photons the wave contains C. How much energy the wave has D. How high the top of the wave is

How do elements form? A. Through the cooling of molten lava B. Through chemical reactions C. Through the evaporation of seawater D. Through fusion in stars and supernova I narrowed it down to B and D, Those make the most sense to me

A test charge of 0.002 C experiences a force of 0.50 N on it is placed in an electric field. Find the intensity of the electric field

Which type of energy transformation takes place in the light bulb

A magnet is Question 1 options: A) an object whose electrons can be aligned in the same direction B) an object that cannot align its electrons in the same direction C) is an object that has no nucleus and only has electrons

A cheetah can run at 30 m/s, but only for about 12s. How far will it run in that time

A car is traveling 80 km/h if the car's speed remains constant how far will it have traveled in 3 hours a. 3km b. 26.7km c. 80 km d. 240 km

True or False? Gases such as water vapor condense when they are * heated*.

If a chromosome on unfolds itself how is transcription enhanced

Two friends, barbara and neil, are out rollerblading. with respect to the ground, barbara is skating due south at a speed of 5.9 m/s. neil is in front of her. with respect to the ground, neil is skating due west at a speed of 1.4 m/s.