Two similar fans are operating in a room. Fan 1 makes a squeaking noise while running. Fan 2 is silent.

Which fan is more energy efficient?

a. Fan 1, because Fan 2 cannot convert energy into sound.
b. Fan 2, because the silence indicates there is no energy transfer going on in the fan.
c. Fan 1, because the noise indicates there is no energy transfer going on in the fan.
d. Fan 2, because Fan 1 converts some energy to sound.

Answer:

O2-oxygen

Explanation:

Answer:

z

Explanation:

x repersents a new moon and the others repersent quarter moons

(x is a new moon because new moons are often the phase when the moon is close to earths sun)

Answer:

Seismographs measure earthquakes, but they do not predict them.

A seismograph is an instrument that detects and records ground motion caused by seismic waves generated by earthquakes or other sources such as explosions or volcanic eruptions. When an earthquake occurs, seismic waves radiate out from the epicenter and cause vibrations in the ground. Seismographs detect these vibrations and record them as a seismogram, which shows the time, amplitude, and duration of the earthquake.

Seismologists can use the data from seismographs to determine the location, magnitude, and depth of an earthquake. This information can be used to assess the potential impact of the earthquake and help in the development of earthquake-resistant structures and emergency response plans. However, seismographs cannot predict when an earthquake will occur. Despite advances in earthquake science, the behavior of earthquakes remains unpredictable, and there is currently no reliable method for earthquake prediction.

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Answer:

Divergent boundaries

Divergent boundaries occur along spreading centers where plates are moving apart and new crust is created by magma pushing up from the mantle. Picture two giant conveyor belts, facing each other but slowly moving in opposite directions as they transport newly formed oceanic crust away from the ridge crest.

Perhaps the best known of the divergent boundaries is the Mid-Atlantic Ridge. This submerged mountain range, which extends from the Arctic Ocean to beyond the southern tip of Africa, is but one segment of the global mid-ocean ridge system that encircles the Earth. The rate of spreading along the Mid-Atlantic Ridge averages about 2.5 centimeters per year (cm/yr), or 25 km in a million years. This rate may seem slow by human standards, but because this process has been going on for millions of years, it has resulted in plate movement of thousands of kilometers. Seafloor spreading over the past 100 to 200 million years has caused the Atlantic Ocean to grow from a tiny inlet of water between the continents of Europe, Africa, and the Americas into the vast ocean that exists today.

Convergent boundaries

The size of the Earth has not changed significantly during the past 600 million years, and very likely not since shortly after its formation 4.6 billion years ago. The Earth's unchanging size implies that the crust must be destroyed at about the same rate as it is being created, as Harry Hess surmised. Such destruction (recycling) of crust takes place along convergent boundaries where plates are moving toward each other, and sometimes one plate sinks (is subducted) under another. The location where sinking of a plate occurs is called a subduction zone.

The type of convergence -- called by some a very slow "collision" -- that takes place between plates depends on the kind of lithosphere involved. Convergence can occur between an oceanic and a largely continental plate, or between two largely oceanic plates, or between two largely continental plates.

Oceanic-continental convergence

If by magic we could pull a plug and drain the Pacific Ocean, we would see a most amazing sight -- a number of long narrow, curving trenches thousands of kilometers long and 8 to 10 km deep cutting into the ocean floor. Trenches are the deepest parts of the ocean floor and are created by subduction.

Continental-continental convergence

The Himalayan mountain range dramatically demonstrates one of the most visible and spectacular consequences of plate tectonics. When two continents meet head-on, neither is subducted because the continental rocks are relatively light and, like two colliding icebergs, resist downward motion. Instead, the crust tends to buckle and be pushed upward or sideways. The collision of India into Asia 50 million years ago caused the Indian and Eurasian Plates to crumple up along the collision zone. After the collision, the slow continuous convergence of these two plates over millions of years pushed up the Himalayas and the Tibetan Plateau to their present heights. Most of this growth occurred during the past 10 million years. The Himalayas, towering as high as 8,854 m above sea level, form the highest continental mountains in the world. Moreover, the neighboring Tibetan Plateau, at an average elevation of about 4,600 m, is higher than all the peaks in the Alps except for Mont Blanc and Monte Rosa, and is well above the summits of most mountains in the United States.

Answer:

Think its A. or B.

Explanation:

Also its Hisoka

Answer:

1. A rock sitting at the edge of a cliff has potential energy. If the rock falls, the potential energy will be converted to kinetic energy.

2. Tree branches high up in a tree have potential energy because they can fall to the ground.

3. A stick of dynamite has chemical potential energy that would be released when the activation energy from the fuse comes into contact with the chemicals.

4. The food we eat has chemical potential energy because as our body digests it, it provides us with energy for basic metabolism.

Explanation:

i gave you 4 if you don't want  to use one

Answer:

Some examples include: A charged battery. Explosives. Green leaves before the sun shines on them (potential photosynthesis)

Explanation:

Answer:

A AND C

Explanation:

Answer:

In a kettle, electrical energy is transformed into thermal energy.

Most energy is transferred into heat energy inside a lightbulb, thats why most ordinary electric lamps contain a thin metal filament that glows when electricity passes through it.

When the steam turn’s the turbine, it is turned into kintetic energy.

Answer:

A. a form of energy-related to an object’s mass, position, or speed

Explanation:

potential energy is based on position and speed while kinetic energy is based more mass and speed.

Answer:

By mouth...

Explanation:

using hands.. :))

Answer:

C or D

Explanation:

Answer: C should be your answer.

Answer:

according to the conservation of mass,

according to the conservation of mass,the mass of the water is 36.04grams

Explanation:

Hope It Help you

Answer:

36.04 g

Explanation:

Explanation:

Electrolytes are minerals that carry an electric charge They're found in your blood, urine and sweat and are vital to specific processes that keep your body functioning as it should.