The maximum number of tension forces that can act on an object is A) there is no limit
B) 2
C) more than 2
D) 1

B 2

Explanation:

more than one force can act on an object at the same time

c)as speed changes, wavelength and frequency change.

everything changes!

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.