Answer:
Explanation:
mass, m = 12 kg
Force, F = 40 N
θ = 37° below the horizontal
(a)
Diagram is attached
(b) Let N be the normal reaction
According to the diagram
N + F Sin θ = m g
N = mg - F Sin θ
N = 12 x 9.8 - 40 x Sin 37
N = 117.6 - 24.07
N = 93.53
Answer: The ratio of f at the higher temperature to f at the lower temperature is 4.736
Explanation:
According to the Arrhenius equation,
or,
![\log (\frac{f_2}{f_1})=\frac{Ea}{2.303\times R}[\frac{1}{T_1}-\frac{1}{T_2}]](https://tex.z-dn.net/?f=%5Clog%20%28%5Cfrac%7Bf_2%7D%7Bf_1%7D%29%3D%5Cfrac%7BEa%7D%7B2.303%5Ctimes%20R%7D%5B%5Cfrac%7B1%7D%7BT_1%7D-%5Cfrac%7B1%7D%7BT_2%7D%5D)
where,
= rate constant at 525K
= rate constant at 545K
= activation energy for the reaction = 185kJ/mol= 185000J/mol (1kJ=1000J)
R = gas constant = 8.314 J/mole.K
= initial temperature = 525 K
= final temperature = 545 K
Now put all the given values in this formula, we get
![\log (\frac{f_2}{f_1})=\frac{185000J/mol}{2.303\times 8.314J/mole.K}[\frac{1}{525K}-\frac{1}{545K}]](https://tex.z-dn.net/?f=%5Clog%20%28%5Cfrac%7Bf_2%7D%7Bf_1%7D%29%3D%5Cfrac%7B185000J%2Fmol%7D%7B2.303%5Ctimes%208.314J%2Fmole.K%7D%5B%5Cfrac%7B1%7D%7B525K%7D-%5Cfrac%7B1%7D%7B545K%7D%5D)
Therefore, the ratio of f at the higher temperature to f at the lower temperature is 4.736
Answer:
Absolute zero is where the particles/molecules are not moving at all, meaning that there is no heat.
This means that the answer is:
1. All particles are moving and this movement allows us to measure the thermal energy of an object or substance. If the particles were able to completely stop moving this would be called reaching absolute zero.
Answer:
The Answer Is A,C,D
Explanation:
The gravitational pull from the moon make bigger waves'
There would be no moon for eclipses
There would be more sun and no moon
<span>Electric current that flows in only one direction. The tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light. The current has only has one loop to flow through in this circuit. This circuit contains two or more branches for current to move through.
*Brainiest answer plzzz</span>
