Temperature is a.A measure of the average kinetic energy of a substance.
On the left side. The alkali metals are group 1, the alkaline earth metals are group 2, and the transition metals are groups 3-12.
Answer:
13598 J
Explanation:
Q = m × c × ∆T
Where;
Q = amount of energy (J)
m = mass (grams)
c = specific heat capacity
∆T = change in temperature
m = 65g, specific heat capacity of water = 4.184J/g°C, initial temperature= 100°C, final temperature = 150°C
Q = 65 × 4.184 × (150 - 100)
Q = 271.96 × 50
Q = 13598 J
Hence, 13598 J of energy is required to boil 65 grams of 100°C water and then heat the steam to 150°C.
Answer:
c) Normal
Explanation:
Reflection is a phenomenon typical of light wave; it occurs when a ray of light hits the interface between two mediums, and bounces off back into the original medium, at a certain angle.
The direction of the reflected ray is determined by the law of reflection, which states that:
1) The incident ray and the reflected ray, together with the normal to the interface (the perpendicular to the interface), all lie within the same plane
2) The angle of incidence is equal to the angle of reflection:
where
is measured as the angle between the incident ray and the normal to the interface
is measured as the angle between the reflected ray and the normal to the interface
