1Draw a quick sketch of the object.
2Draw an arrow showing every force acting on the object.
3To calculate the net force, add any vectors acting on the same axis (x and y), making sure to pay attention to the directions.
Answer:
it's mass
Explanation:
just trust me it's just mass
Answer:
When balanced forces act on an object at rest, the object will not move. If you push against a wall, the wall pushes back with an equal but opposite force. Neither you nor the wall will move. Forces that cause a change in the motion of an object are unbalanced forces
Explanation:
Answer:
Rate constant at 725 K is 
Explanation:
According to Arrhenius equation for a reaction-
where 
and 
are rate constants of reaction at 
and 
temperatures (in kelvin) respectively.
is activation energy of reaction.
Here = 600 K , = 
= 725 K, = 262 kJ/mol and R = 8.314 J/(mol.K)
So plugin all the values in the above equation-
So, =
Hence rate constant at 725 K is
I believe the correct response would be A. Energy being absorbed, as temperature increase must for instance occur for the reaction to occur, this increase in temperature for the reacting substances indicates energy being absorbed as the reaction proceeds.
