PHYSICS HIGH SCHOOL

The method of heat transfer by which the sun warms the earth isA) conduction
B) convection
C) radiation
D) solaration

Answers

Answer 1
Answer: let's break it down
a. conduction works when there's a medium where heat is being transferred. no medium in a vacuum. No

b. flow of gas or liquid. No

c.works on a vacuum.yes

d.doesn't exist.NO

the answer is C
Answer 2
Answer:

Answer:

radiation

Explanation:

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After a large snowstorm, you shovel 2,500 kilograms of snow off of your sidewalk in half an hour. You liftthe shovel to an average height of 1.5 meters while you are piling the snow in your yard. a. How much work did you do? Hint: The force is the weight of the snow. b. What was your power in watts? Hint: You must always convert time to seconds when calculating power.
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Which of the following is not a nutrient? Minerals, probiotics, lipids or proteins. Why? IF YOU SEE THIS HELP

Answers

Answer:Probiotics is not a nutrient

Explanation:It doesnt have nutrients .All of them are nutrients except probiotics it only helps them but it isnt one

Once the magnet moved closest to the loop in the forward direction, under normal magnet polarity, the approximate magnitude of the induced current shown on the galvanometer was mA.Once the magnet moved closest to the loop in the reverse direction, under normal magnet polarity, the approximate magnitude of the induced current shown on the galvanometer was mA.



Once the magnet moved closest to the loop in the forward direction, under reversed magnet polarity, the approximate magnitude of the induced current shown on the galvanometer was mA.

Answers

Answer:

2, 2, 2

Explanation:

Answer:

2, 2, 2

Explanation:

correct on edge

Does a negative charge indicates a lack of free electrons in a body.

Answers

No. Electrons are negative, so if a body has negative charge is because it has excess of electrons.

A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg,The magnitude of the normal force acting on the bed is .967 N
5.00 N
1440 N
1490 N

Answers

A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg. The magnitude of the normal force acting on the bed is 1490 N.

What is force?

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

The force applied by the nurse is horizontal, so there's no vertical component.

Therefore, the normal force is simply equal to the weight of the bed.

N = mg

N = (152 kg) (9.8 m/s²)

N = 1490 N

A nurse applies a horizontal force of 147 N on a bed that has a mass of 152 kg. The magnitude of the normal force acting on the bed is 1490 N.

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Answer:

1490 N

Explanation:

The force applied by the nurse is horizontal, so there's no vertical component.

Therefore, the normal force is simply equal to the weight of the bed.

N = mg

N = (152 kg) (9.8 m/s²)

N = 1490 N

Which particles make up the nucleus of an atom?

Answers

The particles that make up the nucleus of an atom are protons and neutrons.

The nucleus of an atom is composed of two main types of subatomic particles: protons and neutrons. Protons have a positive electric charge, while neutrons have no electric charge, making them neutral. These particles are relatively heavy compared to electrons, which orbit the nucleus.

The protons and neutrons are held together tightly in the nucleus by a strong force called the nuclear force or strong nuclear force. This force overcomes the repulsive force between positively charged protons, keeping the nucleus stable.

The number of protons in the nucleus determines the element's identity. For example, if an atom has one proton, it's hydrogen; if it has six protons, it's carbon, and so on. This number is called the atomic number. The sum of protons and neutrons in the nucleus is called the mass number.

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The nucleus of an atom contains the neutrons and protons, while electrons are on the outer shell. 

Why voltmeter and resistence are parallel in ohm's law.

Answers

Never mind Ohm's Law.  A voltmeter measures the difference in electrical potential
between two points.  So if you want to measure the difference in electrical potential
between two points, you touch one probe of the meter to each point, and somehow
the internal guts of the meter are able to sense the difference in electrical potential
between the two points.

If the two points have non-reactive impedance (a resistance) between them, then the
difference in electrical potential between the two points, as indicated by the meter,
will be close to (resistance between the two points) x (current flowing between them).
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