When solid surfaces slide over each other, the kind of friction that occurs is called <u>Sliding Friction.</u>
Answer:
t = 50 s
Explanation:
P = W/t
Solving for t,
t = W/P = (3430000 J)/(68600 Watts)
= 50 s
Note: 1 Watt = 1 J/s
A chemical equation should be balanced, so that when you make calculations based on the equation you must be able to relate the products to the reactants or vice versa. An example of using equations for calculations in chemistry is with the subject stoichiometry.
Answer:
The pH of the solution is 8, 40-
Explanation:
The pH indicates the acidity or basicity of a substance. PH values between 0 and less than 7 indicate acidic solutions, 7 neutral and greater than 7 to 14 basic. It is calculated as
pH = -log (H30+)
pH= -log (4x10-9M)
<em>pH=8,40</em>
