Answer:0.502kg
Explanation:
F4om the relation
Power x time = mass x latent heat of vapourization
P.t=ML
1260 * 15 *60 = M * 22.6 * 10^5
M= 1134000/(22.6 *10^5)
M=0.502kg=502g
Answer:
The heat of vaporization 580 cal/g times 602g = cal in human and do the same for life form.
Explanation:
Energy is transferred between the ground and the atmosphere via conduction.
Since air is a poor conductor, most energy transfer by conduction<span> occurs right at the earth's surface</span>
Answer:
The correct answer is
a) 1, 2, 3
Explanation:
In rolling down an inclined plane, the potential energy is Transferred to both linear and rotational kinetic energy thus
PE = KE or mgh = 1/2×m×v² + 1/2×I×ω²
The transformation equation fom potential to kinetic energy is =
m×g×h = ![\frac{1}{2} mv^{2} + \frac{1}{2} (\frac{2}{5} mr^{2} )(\frac{v}{r}) ^{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%20mv%5E%7B2%7D%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20%28%5Cfrac%7B2%7D%7B5%7D%20mr%5E%7B2%7D%20%29%28%5Cfrac%7Bv%7D%7Br%7D%29%20%5E%7B2%7D)
= ![\sqrt{\frac{10}{7} gh}](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7B10%7D%7B7%7D%20gh%7D)
= ![\sqrt{gh}](https://tex.z-dn.net/?f=%5Csqrt%7Bgh%7D)
=![\sqrt{\frac{4}{3} gh}](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7B4%7D%7B3%7D%20gh%7D)
Therefore the order is with increasing rotational kinetic energy hence
the first is the sphere 1 followed by the disc 2 then the hoop 3
the correct order is a, 1, 2, 3
Answer:
640 nanometer setara dengan 6.4e-7 meter