Answer:
y = 27 cm
Explanation:
given,
After 11 hours of burning height of candle is 27.9 cm
After 30 hours of burning height of candle is 26 cm
height after 20 hour = ?
the candle height decreases linearly
using linear equation
y = m x+ c
27.9 = m (11 ) + C.......(1)
26 = m (30) + C..............(2)
on solving equation (1) and (2)
1.9 = -19 m
m = -0.1
from equation 2
26 = -3 + C
C = 29
y = m x + 29
at 20 hour
y = -0.1× 20 + 29
y = 27
height of candle after 20 hours is 27 cm.
Answer:
what are the options??? to choose the answer from?
Explanation:
Answer: d. Electromagnetic wave
Explanation:
Light is an electromagnetic wave, no matter is wavelength or color.
In this sense, the main characteristic of this type of wave is that it can propagate trhough vacumm, it is not necessary a medium. In addition, electromagnetic waves are transversal waves, this means the electric field oscillates in all normal directions to the direction of wave propagation.
Thermal energy can be defined as specific thermodynamic quantities as a part of energy transfer such as heat, which is a form of thermal energy flowing from hotter to colder objects. Temperature is a physical property of an object which specify whether the subject is hot or cold.
<u>Explanation:</u>
Difference between thermal energy, temperature and heat
<u>Thermal Energy</u>
Thermal energy is the total kinetic energy of molecules bundled up in the object. This energy is the heat exerted by the object which forms its temperature.
<u>Temperature</u>
In technical terms, temperature is the average kinetic energies measurement of molecules and atoms, present in an object. Simply, we can say, temperature defines how hot or how cold is a substance. Temperature relies on the kinetic energy of particles.
<u>Heat</u>
Transfer of thermal energy from a hotter to colder objects. Heat is different from temperature. Temperature is the mark to define how hot a substance is whereas, heat is the flow of thermal energy.
Answer:
providing energy to an atom can allow the electron in its non valence shell to obtain energy and move to a higher energy orbital and act as a valence electron.
Explanation:
