Answer:
Is the source an authority on the subject?
Explanation:
To figure out which source is accurate, you want to find out the source's authority on the subject. For example, if you wanted to learn how to play the piano, you wouldn't go to a dance teacher, you would go to someone who knows how to play the piano. The person who knows how to play the piano has more authority to teach the piano than a dance teacher.
The leaf would be on top of the wave after two seconds just like it was positioned at 0 seconds. After 3 seconds the leaf should be positioned like it was at 1 second. The leaf is moving along with the wave.
Answer:
3.53*
Explanation:
![K_{c} =\frac{[HI]^{2}[Cl_{2}] }{[HCl]^{2}}=\frac{[5.6*10^{-16} ]^{2} [0.0019]}{[0.13]^{2} }=3.53*10^{-32}](https://tex.z-dn.net/?f=K_%7Bc%7D%20%3D%5Cfrac%7B%5BHI%5D%5E%7B2%7D%5BCl_%7B2%7D%5D%20%7D%7B%5BHCl%5D%5E%7B2%7D%7D%3D%5Cfrac%7B%5B5.6%2A10%5E%7B-16%7D%20%5D%5E%7B2%7D%20%5B0.0019%5D%7D%7B%5B0.13%5D%5E%7B2%7D%20%7D%3D3.53%2A10%5E%7B-32%7D)
Kc is the equilibrium constant calculated as the ration of products over reactants with their stoichiometric coefficients as their exponents. So the balanced chemical equation is important. Solids do not form part of the Kc expression, they do not affect the equilibrium constant which is why Iodine is not part of the calculations
Complete question:
A ball with a weight of 0.5 kg is sitting on a shelf that is 3 meters high. What is the gravitational potential energy of the ball ?
Help me! This is 8th grade sci btw
Answer:
the gravitational potential energy of the ball is is 14.7 J.
Explanation:
mass of the ball, m = 0.5 kg
height above the ground on which the ball is sitting, h = 3 m
The gravitational potential energy of the ball is calculated as follows;
P.E = mgh
P.E = 0.5 x 9.8 x 3
P.E = 14.7 J
Therefore, the gravitational potential energy of the ball is is 14.7 J.
