Answer:
Heat is transferred directly from one particle of matter to another by the process of conduction.
A circular flow of warmer fluid and cooler fluid is called convection
Heat is always transferred from conduction to radiation
radiation is the transfer of energy by electromagnetic waves.
Heat that is transferred by the movement of currents within a fluid is called conduction
The only form of heat transfer that does not require matter is specific heat
Water bubbles up through a hot spring at Yellowstone National Park. What method of heat transfer is this?
convection
Explanation:
I hope that this helps, I kinda rushed on it
Answer:
1) Joule
2) kgm²/s²
3) 10%
Explanation:
Question 1)
Luminosity is defined as the total amount of energy released from an object in a unit amount of time.
This means Luminosity is the ratio of energy and time.
Unit of Energy is Joules and Unit of Time is seconds, so unit of Luminosity would be Joule per second or Watts.
So, from the given options, the unit which would be used in Luminosity calculations is Joule.
Question 2)
Work = Force x Distance
SI unit of Work is Joule
SI unit of Force is Newton or kgm/s²
SI unit of Distance is meter(m)
Unit of Work = Unit of Force x Unit of Distance
Joule = kgm/s² x m
Joule = kgm²/s²
This means, the correct description of joule in terms of SI base units is kgm²/s²
Question 3)
Value of gravitational constant from the experiment = Nm²/kg²
The accepted or actual value of the gravitational constant = Nm²/kg²
We need to calculate the percentage error. Percentage error is defined as:
Here, original value is the accepted value. Using the values in this formula, we get:
Thus, this means the percentage error in the calculation of gravitational constant was 10%.
Answer: 500 N
Explanation:
The formula to find the force exerted by a mass, we may use F = mg, where g, the gravity, and a, the acceleration, can be interchangeable in the formula.
1) F = 50 x 10
2) F = 500 N
Hope this helps, brainliest would be appreciated :)
‘All neon lights are colored by
the color of the tubing’ is NOT true regarding neon lights. The answer is
letter B. Neon lights are emitted as electrons in a gas tube, it consist of helium
and krypton and each gas produces its own distinctive color.
Answer:
Polarized light waves are light waves in which the vibrations occur in a single plane. The process of transforming unpolarized light into polarized light is known as polarization. There are a variety of methods of polarizing light.
Explanation: