The three major scales used to measure earthquakes are Mercalli Scale, Richter Scale and Magnitude Scale.

Answers

Answer 1

Answer:

The statement ‘The three major scales used to measure earthquakes are Mercalli Scale, Richter Scale and Magnitude Scale’ is true. These three scales used to measure the seismic waves released by the earthquake.

Answer 2

Answer:

Answer:true

Explanation:

Related Questions

Direct current is the flow of an electric charge _____.A. that regularly reverses direction B. that regularly stops and starts again C. that moves in only one direction D. that stops at a specific point
Is the moon blocking the sun an eclipse of the sun
A blender uses 1,500 joules of energy in 5 seconds. What is the power rating of the blender?
What is the energy of work done lifting 2kg mass rocket to a height of 130 m
You're in an airplane that flies horizontally with speed 1100 km/h (300 m/s ) when an engine falls off. Neglecting air resistance, assume it takes 26 s for the engine to hit the ground.Find the height of airplane.

Which state of matter is most likely represented in the image?

Answers

It’s a liquid state !

Answer: plasma

Explanation:

Plz give Brainlies. I have 0.

Ted wants to hang a wall clock on the wall by using a string. If the mass of the wall clock is 0.250 kilograms, what should be the tension of the string so that it can sustain the weight of the wall clock?

Answers

The clock is pulling the force towards earth's center because of gravity.
That force is equal to:
F = m*g where g is gravitational acceleration.

We will take that g = 9.81m/s^2

Now:
F = 0.25 * 9.81 = 2.4525 N

The string needs to sustain that force, therefore minimum Force that string has to be able to sustain is:
2.4525 N

The answer is 2.45 newtons because 1 kg = 9.8 newtons so when we use that ratio, we get around 2.45 newtons for 0.25 kg. This would be your (B) option I think.

A container holding 1.2 kg of water at 20.0 °C is placed in a freezer that is kept at –20.0 °C. The water freezes and comes into thermal equilibrium with the interior of the freezer. a) How much heat is extracted from the water in thisprocess?
b) What is the minimum amount of electrical energy required bythe refrigerator to carry out this process if it operates betweenreservoirs at temperatures of 20.0 °C and -20.0 °C?

Answers

Answer:

(a) $Q=556464\ J$

(b) 556464 joule

Explanation:

Given:

mass of water, $m_w=1.2\ kg$

initial temperature of water, $T_i=20^(\circ)C$

final temperature of frozen water, $T_f=-20{}^(\circ)C$

The conversion of water of 20.0 °C to the ice of –20.0 °C will comprise of three steps:

cooling of water to 0 °C $Q_w$
formation of ice at 0 °C from the water of 0 °C $Q_L$
further cooling of ice of 0 °C to -20 °C $Q_i$

We have,

Latent heat of fusion of ice, $L=3.4* 10^5\ J.kg^(-1)$

specific heat of water, $c_w=4186\ J.kg^(-1).^(\circ)C^(-1)$

specific heat of ice, $c_i=2000\ J.kg^(-1).^(\circ)C^(-1)$

(a)

Now, total heat lost in the process:

$Q=Q_w+Q_L+Q_i$

$Q=m_w(c_w. \Delta T_w+L+c_i.\Delta T_i)$

where:

$\Delta T_i\ \&\ \Delta T_w$ = change in temperature of ice and water respectively.

$\Rightarrow Q=1.2(4186* 20+3.4* 10^5+2000* 20)$

$Q=556464\ J$ is the total heat extracted during the process.

(b)

So, 556464 joule is the minimum electrical energy (by the law of energy conservation under no loss condition) required by refrigerator to carry out this process if it operates between the reservoirs at temperatures of 20.0 °C and -20.0 °C, because for a refrigerator to work in a continuous cycle it is impossible to transfer heat from a low temperature reservoir to a high temperature reservoir without consuming energy in the form of work. Here 556464 joule is the heat of the system to be eliminated.

Final answer:

The amount of heat extracted from the water involves the sum of heat lost as it cools and then freezes. The minimum energy needed by the refrigerator to do this is given by the formula for Carnot efficiency.

Explanation:

To answer these questions, we'll need to understand some fundamental principles of thermodynamics.

a) The heat Q taken from the water will be the sum of the heat released during cooling of the water until 0.0°C, and the heat released during freezing at 0.0°C. The heat loss as the water cools can be calculated using Q = mcΔt where m=mass of water, c=specific heat of water, and Δt=change in temperature. The heat loss as water freezes can be calculated using Q = mlf where lf is the latent heat of fusion. Adding these two quantities gives the total heat extracted.

b) The minimum energy needed by the refrigerator, W, is given by the Carnot efficiency formula, W = Q*(T_hot - T_cold)/T_hot, where T is in Kelvin. This would tell you how much energy the refrigerator needs to remove the heat from the water and cool it down to the freezer temperature.

Learn more about Thermodynamics here:

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Each step in any energy conversion process will _____. gain energy create energy dissipate energy destroy energy

Answers

The correct answer is to dissipate energy. Each step in any energy conversion process will dissipate energy. The energy conversion is the process in which a form of energy is being converted into a new or another form of energy.

The correct answer to the question is : Energy dissipate.

EXPLANATION:

Before coming into any conclusion, first we have to understand law of conservation of energy.

As per law of conservation of energy, energy can neither be created nor be destroyed. It can only change from one form to another form, and the total energy of the universe is always constant.

As per the question, there is energy conversion. One form of any energy may be converted into various types of energy. One particular type of energy is not obtained always.

Hence, the correct answer to the question is energy is dissipated during energy conversion.

The diagram below shows the location of three stars in space.The light from Star 2 reaches Star 1 in 63 years. If Star 3 is 75 light years from Star 2, which of these conclusions about the stars is correct? (2 points)
Star 2 is 75 miles away from Star 3.
Star 2 is 63 kilometers away from Star 3.
Star 1 is 12 light years away from Star 3.
Star 1 is 138 light years away from Star 3.

Answers

Because Star 1 is 63 light years from Star 2 and Star 2 is 75 light years from Star 3 we can form a simple equation to get our answer.

75 + 63 = 138

Therefore your answer would be...

D. Star 1 is 138 light years away from Star 3.

I just took th test it is letter D for sure!

The infrared rays in sunlight can cause sunburn. Please select the best answer from the choices provideda. True
b. False

Answers

Answer: The correct answer is False.

Explanation:

Infrared is an example of electromagnetic wave. The wavelength of this wave is shorter.

Sunburn is caused by UV-radiations because the wavelength of this wave is longer and energy is higher.

Relationship between wavelength and energy is given by the Planck's equation:

$E=(hc)/(\lambda)$

where,

E = energy of the wave

h = Planck's constant

c = speed of light

$\lambda$ = Wavelength of the wave

From the above relation, wavelength of the wave is inversely proportional to the energy of the wave. Hence, infrared rays does not cause any sunburn because these waves have low energy and does not effect the skin.

Hence, the correct answer is False.

B. False. Sunburn is caused by UV.

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A copper block is removed from a 310C oven and dropped into 1.10kg of water at 23.0C. The water quickly reaches 33.0C and then remains at that temperature.What is the mass of the copper block? The specific heats of copper and water are 385 J/(kg?K) and 4190 J/(kg?K) respectively. Express your answer to three significant figures and include the appropriate units.

Which of these is the most likely impact of solar prominence on Earth? A) rerouting of aircraft B) increase in severity of hurricanes C) long-term electrical power generation D) improvement in satellite communication

Describe a ways car manufacturers try to reduce drag and why.