Mechanical energy can be defined as the sum of kinetic energy and the gravitational potential energy.
Object A has kinetic energy as 604 J and gravitational potential energy as 285 J.
Hence, mechanical energy of A = 604 J + 285 J
= 889 J
Object B has kinetic energy as 481 J and gravitational potential energy as 300 J.
Hence, mechanical energy of A = 481 J + 300 J
= 781J
Hence, object A has more mechanical energy than B.
Answer:
B.109.5
Explanation:
Bond angle :This is the angle between the two bonds present in the atoms or molecule.
Sulphur difluoride(SF2) has a bond angle of 109.5 degrees.
Two astronauts would exhale about 40 moles of carbon dioxide daily.
Carbon dioxide reacts with lithium hydroxide in a 1 : 2 mole ratio. Set up a proportion:
1 : 2 = 40 : x
Then, find x:
<span>12=40x
</span>
Cross multiply. x = 80 moles of LiOH per day for both astronauts
Answer:
wavelength = 6 cm .
Explanation:
frequency given = 5 x 10⁹ .
wavelength = velocity of light / frequency
= 3 x 10⁸ / 5 x 10⁹
= .06 m
= 6 cm