When light goes from one material into another material having a higher index of refraction
a) its speed decreases but its wavelength and frequency both increase
b) its speed, wavelength, and frequency all decrease
c) its speed increases, its wavelength decreases, and its frequency stays the same
d) its speed decreases but its frequency and wavelength stay the same
e) its speed and wavelength decrease, but its frequency stays the same

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it