<span>It is convection currents that carry thermal energy from warmer places to cooler places. The process operates upon planetary scales, as suggested by the question, but also operates on more local scales such as in your own house. For example, if there is a heater within a single room within your house, convection will drive heat energy to adjacent colder rooms. </span>
Answer:
-7.2 * 10^4 kJ mol-1
Explanation:
First we obtain the change in enthalpy for the reaction;
ΔHrxn= ΔHproducts - ΔHreactants
ΔHrxn=[( −510 ) - (−110.53) + (−277.69)]
ΔHrxn= -121.78 * 3 J mol-1
The we obtain the entropy change of the reaction
ΔSrxn= ΔSproducts - ΔSreactants
ΔSrxn= [(191) - (197.67) + (160.7)]
ΔSrxn= -167.37 J K-1 mol−1
Then we calculate ΔG at 298 K
ΔG = ΔH - TΔS
ΔG = ( -121.78 * 3) - (298) (-167.37)
ΔG = -7.2 * 10^4 kJ mol-1
The answer would be B.
Since the light source comes from the bottom, you just need to find the sequence from the bottom going up.
It will start with the light source, then go through the slide, which will then go through the objective lens and lastly, the eyepiece lens. In summary, the sequence is:
B. Light --- slide ---- objective lens --- eyepiece lens
Answer:
It cannot be determined without knowing the mass of the skier.
Explanation:
A skier is traveling down a slope that is inclined 30° above the horizontal. The coefficient of kinetic friction between the skier and the slope is 0.10.
Which of the following best describes the acceleration of the skier?A) It is zero. B) It is about 4.0 m/s^2 C) It is about 9.0 m/s^2 D) It is about 10 m/s^2E) It cannot be determined without knowing the mass of the skier.
u=f/R
f=frictional force over reaction.masinalpha
U=coefficient of Kinetic friction
R=reaction
f=ma, since the frictional force is in the opposite direction of the force applied to move down the inclined plane
from newtons second law of motion , we know that the force applied is directly proportional with rate of change in momentum.
to get the acceleration , acceleration , mass needs to be given as force is dependent on the mass acceleration.
"The distance that the force moves" is the one among the following choices given in the question that must be increased, if <span>a simple machine reduces the strength of a force. The correct option among all the options that are given in the question is the first option or option "A". I hope the answer helped you.</span>