Answer:
Explanation:
the angle of incidence is the angle between this normal and the incident ray; the angle of reflection is the angle between this normal and the reflected ray. According to the law of reflection, the angle of incidence equals the angle of reflection.
Answer:
The oscillations are perpendicular to the direction of travel.
Step-by-step explanation:
An electromagnetic wave has oscillating <em>electric</em> and <em>magnetic</em> fields.
They oscillate at right angles to each other and perpendicular to the direction of travel of the wave.
Specific heat is the amount of heat absorb or released by a substance to change the temperature to one degree Celsius. To determine the specific heat, we use the expression for the heat absorbed by the system. Heat gained or absorbed in a system can be calculated by multiplying the given mass to the specific heat capacity of the substance and the temperature difference. It is expressed as follows:
Heat = mC(T2-T1)
By substituting the given values, we can calculate for C which is the specific heat of the material.
2510 J = .158 kg ( 1000 g / 1 kg) (C) ( 61.0 - 32.0 °C)C = 0.5478 J / g °C
You again? Haha ok so:
melting is a physical property because it changes the physical state of matter (from solid to liquid) but there is no chemical change (if you make the stuff cold again it will turn back to the same kind of solid) however with flammability you have a chemical reaction, so you change the matter completely (ash is not the same as wood)
Do you get it?