28. A reaction in which the products contain more chemical energy than the reactants is (4.7)

a. exothermic.

c. endothermic.

b. electrical

Vd. exergonic.

We know the frequency range of certain sounds are: 400-560 Hz, what are the ranges of wavelength in meters when the signal transmits in air? what about in water? (In dry air at 20oC the speed of sound is 343.

What is physics? Relate to other sciences.

If a wave were nine feet high, how much would the amplitude be? A. 3 feet B. 4.5 feet C. 12 feet D. 18 feet

A proton is traveling - x direction through a uniform magnetic field which is in the + x direction. In which direction will the proton be immediately pushed.

Difference between residential care facilities, extended care facilities, and independent living care facilities

if light travels in a vacuum at 3.00 x 10^8m/s and its frequency is 7.44 x 10^7 what is its wavelength

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass