Answer:
The correct answer is 'A'
Explanation:
I guessed and was correct.
Answer:
5N
Explanation:
Data obtained from the question include:
K (spring constant) = 20N/m
e (extension/compression) = 0.25 m
F (force) =?
Using the formula F = Ke, the force can be obtained as follow:
F = Ke
F = 20 x 0.25
F = 5N
Answer: 5.12x10∧-4N
Explanation:
Force = I B L
L = 6.4m
Let Current (I) I₁ = I₂= 14A
Distance of the wire = 42cm = 0.42m
BUT
B = μ₀I / 2πr
=(2X10∧-7 X 12) / 0.42
B =5.714×10∧-6T
Force = I B L
Force = 14x [5.714×10-6]×6.4
Force = 5.12x10∧-4N
Answer:
PV = k
Explanation:
Boyles law states that the pressure P of a fixed mass of gas is inversely proportional to its volume V provided that the temperature T is constant (i.e does not vary).
Mathematically, boyle's law can be expressed as;
P = k/V where k us the constant of proportionality. From the equation;
PV = k which is also equivalent to;
P1V1 = P2V2 = PnVn
P1, P2... Pn are the values of the pressures
V1, V2...Vn are the values of the volumes
A. a large amount of energy released into its surrounding
During the respiration, glucose molecules are converted to other molecules in a series of steps. They finally end up as as carbon-dioxide and water.
The overall reaction is
<span>C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + 2805 kJ
</span>
The reaction is exothermic reaction because <span>C=O and O-H bonds in the products are so much more stable than the bonds in the reactants.
</span>
Bond energy is the average needed to break a bond.
Some bond energies are:
C-C = 347 kJ/mol
C-H = 413kJ/mol;
C-O = 358 kJ/mol;
O-H = 467 kJ/mol;
O=O = 495 kJ/mol;
<span>C=O = 799 kJ/mol</span>