"Towards south" is the one among the following choices given in the question that is the direction of the magnetic force on the moving positive charge. The correct option among all the options that are given in the question is the second option or option "B". I hope that the answer has actually come to your help.
Answer:
The activation energy is
Explanation:
From the question we are told that
The rate constant is k
at the temperature 
The value of k is 
at temperature 
The value of k is 
The rate constant is mathematically represented as

Where Q is the activation energy
R is the ideal gas constant with a value of 
C is a constant
T is the temperature
For the first rate constant

For the second rate constant

Now the ratio between the two given rate constant is
![\frac{k_1 }{k_2} = e^{(\frac{Q}{R} [\frac{1}{\frac{T_2 - 1}{T_1} } ] )}](https://tex.z-dn.net/?f=%5Cfrac%7Bk_1%20%7D%7Bk_2%7D%20%20%3D%20%20e%5E%7B%28%5Cfrac%7BQ%7D%7BR%7D%20%5B%5Cfrac%7B1%7D%7B%5Cfrac%7BT_2%20-%201%7D%7BT_1%7D%20%7D%20%5D%20%29%7D)
=> ![ln [\frac{k_1}{k_2} ] = \frac{Q}{R} * [\frac{1}{\frac{T_2 -1}{T_1} } ]](https://tex.z-dn.net/?f=ln%20%5B%5Cfrac%7Bk_1%7D%7Bk_2%7D%20%5D%20%3D%20%20%5Cfrac%7BQ%7D%7BR%7D%20%20%2A%20%5B%5Cfrac%7B1%7D%7B%5Cfrac%7BT_2%20-1%7D%7BT_1%7D%20%7D%20%5D)
substituting values
![ln [\frac{1.05 *10^{-8}}{2.95 *10^{-4}} ] = \frac{Q}{8.314} * [\frac{1}{\frac{673 -1}{573} } ]](https://tex.z-dn.net/?f=ln%20%5B%5Cfrac%7B1.05%20%2A10%5E%7B-8%7D%7D%7B2.95%20%2A10%5E%7B-4%7D%7D%20%5D%20%3D%20%20%5Cfrac%7BQ%7D%7B8.314%7D%20%20%2A%20%5B%5Cfrac%7B1%7D%7B%5Cfrac%7B673%20-1%7D%7B573%7D%20%7D%20%5D)
=> 
Answer:The speed is 54 mm/s, the units are mm/s.
Explanation:
1) Data:
a) λ = 6mm
b) f = 9 Hz = 9 s⁻¹
c) v = ?
2) Formula:
wave equation: v = f × λ
3) Solution:
v = 9 s⁻¹ × 6mm
v = 54 mm/s
The speed is 54 mm/s, the units are mm/s.
Explanation:
It is given that,
Velocity of particle 1, u₁ = 10 m/s
Velocity of particle 2, u₂ = 5 m/s
Let v₁ and v₂ are the final speed of both particles after the collision. Applying the conservation of momentum as :

......................(1)
For an elastic collision, the coefficient of restitution is equal to 1 as :


................(2)
On solving equation (1) and (2), we get,


So, the speeds of particle 1 and particle 2 after the collision is 5 m/s and 10 m/s respectively. Hence, this is the required solution.