Which of these accurately describes a chemical reaction

A. products and reactants combine to form new reactants.

B. Reactants combine to form products

C. Products and reactants combine to form new substances

D. Products combine to form reactants

You are given two carts, a and b. they look identical and you are told that they are made of the same material. you place a at rest on an air track and give b a constant velocity directed to the right so that it collides elastically with a.

How does mass affect the speed of falling objects?

A nylon guitar string vibrates in a standing wave pattern shown below. 2.7 m what is the wavelength of the wave? answer in units of m.

How does an object's motion change as a result of centripetal acceleration? The speed decreases in the same direction. The speed increases in the same direction. The direction changes along with the speed. The direction changes but not the speed.

German philosopher and physicist Gustav Theodor Fechner founded psychophysics. True or False

A tube, open at only one end, is cut into two shorter (nonequal) lengths. The piece that is open at both ends has a fundamental frequency of 422 Hz, while the piece open only at one end has a fundamental frequency of 666 Hz.

Table tennis the path of a table-tennis ball after being hit and hitting the surface of the table can be modeled by the function h=-4.9t (t-0.42) where h is the height in meters above the table and t is the time in seconds.

A coat rack weighs 65.0 lbs when it is filled with winter coats and 40.0 lbs when it is empty. The base of the coat rack has an area of 452.4 in2.

An initially stationary object experiences an acceleration of 6 m/s2 for a time of 15 s. How far will it travel during that time?

How was helium first discovered? mining of the radioactive element uranium using spectral analysis of the Suns' emission spectra o hubble obtaining samples from explosions off the surface of the sun deep sea mining off the coast of Texas