A piece of metal and a piece of brick are both sitting in the sun if both are the same mass what property of matter will make the metal feel hotter to touch
Answers
Metals are highly conductive both electrically and thermally because of its highly ordered crystalline structure of metallic particles. Brick is poor conductor and will be less hot than metal.
What is conduction?
Conduction is the mechanism of heat transfer in solids. Solids are composed of closely packed particles arranged in a chain with strong intermolecular forces.
Metals are highly conductive. They have free electrons which are delocalized in the crystal lattice. They can be easily transited through and make the material conductive.
Bricks is poor conductor of heat and odes not conduct electrically, it easily melts at high temperatures and easily cools as well. Therefore, at the surface of sun, the highly conductive metal will be more hotter.
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Related Questions
A series circuit has a lamp, a battery, an ammeter and a switch. What would the ammeter read
Which of the following is NOT a model of the solar system?a. Sun-centered c. Modern view b. Earth-centered d. all of the above are solar system models
Humpty Dumpty (12 kg) sat on a wall (2 m high). What was his potential energy, before his great fall? A. 235.2 J B. 235.2 N C. 24 J D. 246.1 W
An object completes 10 cycles in 50 s what is the period of its rotation?
Answers
If you apply 100 V to a winding of 50 turns, then a winding that yields 20 volts
must be wound with
(20/100) of 50 turns = 10 turns
111.5 newtons
684.1 newtons
4041.7 newtons
Answers
F = GMm/r²; where G is the gravitational constant, M is the larger mass, m is the smaller mass, and r is the distance between the two.
F = (6.673 × 10⁻¹¹ × 5.98 × 10²⁴ × 70) / (6.39 × 10⁶)²
F = 684.1 N
F = (6.673*10^-11)(5.98*10^24)(70)/(6.39*10^...
F = 684 N (3sf)
A)solids
B)liquids
C)plasma
Answers
Answers
with the given information.
The only thing we can calculate is the total energy in the pendulum.
When the pendulum is at the bottom of its swing, ALL of its energy
is kinetic.
Kinetic energy = (1/2) x (mass) x (speed)²
= (1/2) x (2 kg) x (4.1 m/s)²
= 4.1 kg-m²/sec²
= 4.1 Joules .
In principle, we can also calculate how HIGH the 'bob' is at the end of
its swing, because now we know how much total energy the pendulum
has, and at the ends of the swing, the energy is all potential.
Potential energy = (mass) x (gravity) x (height)
4.1 J = (2 kg) x (9.8 m/s²) x (height)
Height = (4.1 kg-m²/s²) / (19.6 kg-m/s²)
= 0.209 meter high
and that's as far as we can go. None of this points us toward
calculating the length of the pendulum.
Answer: 0.857
Explanation:
(4.1^2)/(2*9.8)
Answers
Answer:
Planetary Nebula
Explanation:
A star has its own life cycle very similar to a human life cycle where it takes birth, grows up, becomes old and then dies. The life cycle of stars and human differ in the duration of cycle and end result.
When a star dies it can end up differently basis its mass. Here one of the ends of a star is mentioned where it casts off all the gases. Such type of situation will create a planetary nebula. One famous example of such nebula is Crab Nebula.
Answers
Answer: The correct answer is True.
Explanation:
Average kinetic energy of the particles is defined as the average of the kinetic energies of the particles present in a medium. It is the measure of temperature of the medium.
Mathematically,
where,
K = kinetic energy
T = Temperature
As, kinetic energy of the particles is directly proportional to the temperature. Increase in temperature will result in the increase in the kinetic energy and vice-versa.
We are given, that the temperature of the two glasses are same, so the average kinetic energy of the particles will also remain same.
Hence, the correct answer is True.
The statement ‘If two glasses of water are at the same temperature, the average kinetic energy of the particles of water in each glass is the same’ is true. This is because temperature is directly proportional with the kinetic energy of the molecules. If there is no change in temperature, there would not be kinetic movement of the molecules.