All categories

3 years ago

Two students below described a part of Earth's innermost layer:

2 answers:

6 0

The answer to your question is B- They both described the inner part otherwise known as the inner core.

The inner core is hotter than the surface of the sun. The inner core is made out of iron and nickel. The inner core is extremely hot and is the last layer. It is a solid because of all the pressure from the other layers putting there weight onto this layer.

expeople1 [14]3 years ago

5 0

Answer:B

Explanation: because the inner part has the highest pressures and its actually dance inside

You might be interested in

Name two laboratory equipment in the picture . b ) Identify two mistakes that these people in the laboratory above are doing

pishuonlain [190]

The two laboratory equipment in the picture are beaker and chemicals.The people in the picture are not wearing any protective gears while (a) working in the laboratory (b) Throwing the chemicals on the floor.

Among the many items that would be considered general lab equipment are pipettes, scales, centrifuges, Bunsen burners, freezers, hot plates, incubators, coolers, stirrers, water baths, and fume hoods

The dangers of working in a laboratory setting include:

Chemical hazards: Handling toxic substances can cause irritation and carcinogenicity.

Biological hazards: Biological hazards include hazards from working with small animals, working with blood borne pathogens and working with biological agents, such as viruses and bacteria.

Physical hazards: Physical hazards include exposure to noise, poor posture and the explosibility and flammability of substances.

Safety hazards: Safety hazards include unbalanced centrifuges, danger when handling hot sterilized items and electrical hazards, such as shock, explosions, blasts and electrocutions.

Allergy hazards: A common allergy hazard in the laboratory setting is a latex allergy, as many of the materials used in a laboratory setting are latex.

Learn more about Laboratory experiments at brainly.com/question/8430576

#SPJ9

3 0

1 year ago

A householder has a 10.8 kW electric shower installed in the bathroom. Calculate the current drawn from the mains electricity su

emmasim [6.3K]

Answer:

90 A

Explanation:

Applying,

P = VI.............. Equation 1

Where P = Power, V = Supply voltage, I = current.

Make I the subject of the equation

I = P/V.............. Equation 2

From the question,

Assuming the Voltage of the main electric supply is 120 V

Given: P = 10.8 kW = 10800 W, V = 120 V (household voltage)

Substitute these values into equation 2

I = 10800/120

I = 90 A

5 0

3 years ago

Joe follows the procedure below to make a compass.1. Move a magnet from the top of a needle to its point fifty times.2. Lay the

pickupchik [31]

Answer:

The purpose of step 1 is to induce magnetism into the needle, so that it retains magnetism and behaves as a magnet after the process.

Explanation:

The method of production the needle magnet in the procedure is the single stroke. This process involves a continuous stroking of a magnetic object (e.g needle) repeatedly for a period or number of times with a permanent magnet. Thus, when the permanent magnet is removed, the object retains magnetism, and behaves like a magnet.

The importance of the stroking process is the turn a magnetic object to a magnet by inducing magnetism into it.

4 0

3 years ago

Draw the force vector starting at the black dot. The location, orientation, and length of the vector will be graded. You can mov

alisha [4.7K]

Answer:

F3 is the equilibrant force equal in magnitude to the resultant between F1 and F2 but opposite in direction to it.

Explanation:

Given the diagram, the force F3 to make the body remain at rest or in equilibrium is the equilibrant force, this force is equal in magnitude to the resultant Fr between F1 and F2 but opposite in direction to it.

See attachment for diagram of forces.

The resultant force;

Fr =√ (F1)² + (F2)²...(1) [diagram a]

Therefore the length of F3 is Fr

F3 = -Fr

The direction (diagram b) of the resultant force Fr is given by

∆ = acrtan[(F1/F2)]

The direction of F3 is [90 + arctan(F1/F2)]

As seen in the diagram (d), the location of the force is in the fourth quadrant.

3 0

2 years ago

an observer A fires a gun and another observer B at a distance 1650 m away from A hears its sound . If the speed of sound is 330

Arisa [49]

Answer:

5 seconds

Explanation:

Data provided in the question as per the question is as follows

Distance = 1,650 meter

Speed of the sound is 330 m/s

Based on the given information, the time taken is

As we know that

$Speed = \frac{Total\ distance}{Total\ time}$

So,

$Time\ taken = \frac{Total\ distance}{Speed}$

$= \frac{1,650}{330}$

= 5 seconds

We simply divided the total distance from the speed so that the time taken could be come and the same is to be considered

5 0

3 years ago