Hello Please Help With A couple Science questions

Answers

Answer 1

Answer: #1 A) Long wavelength and high frequency.

#2) A) Brightness.

#3) D) They are used to examine things.

#4) B) Compression and visible light waves.

Answer 2

Answer: For the first one is A.
Second one is A.
Third one is D.
Forth one is B.

Hope this helps:)

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How does the distance the Earth is from the Sun affect its orbit?
How is thermal energy transferred during conduction? Check all that apply.0Thermal energy is transferred between particles that are not touching each otherThermal energy is transferred between particles that are in direct contact with each other.Thermal energy is transferred between objects of different temperatures.Thermal energy is transferred between objects of the same temperatureThermal energy is transferred from slow-moving particles to fast-moving particlesThermal energy is transferred from fast-moving particles to slow-moving particles

A spy satellite is orbiting earth and experiences a gravitation Force F if a similar satellite with one half the mass is placed in an orbit that is twice as far from the earths center the gravitational force between the earth and the second satellite will be what multiple of F?

Answers

The gravitational force on the second satellite is 1/8 of the force exerted on the 1st satellite.

Explanation:

The magnitude of the gravitational force exerted by the Earth on the satellite is given by:

$F=G(Mm)/(r^2)$

where

G is the gravitational constant

M is the Earth's mass

m is the mass of the satellite

r is the radius of the orbit of the satellite

Let's call F the gravitational force on the first satellite, of mass m, with an orbit of radius r.

The second satellite has mass

$m'=(m)/(2)$

and the radius of its orbit is

$r'=2r$

So, the gravitational force exerted on the second satellite is

$F'=G(M((m)/(2)))/((2r)^2)=(1)/(8)((GMm)/(r^2))=(1)/(8)F$

Therefore, the force on the second satellite is 1/8 of the force exerted on the 1st satellite.

Learn more about gravitational force:

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#LearnwithBrainly

If you are following a car and also being tailgated by another vehicle, your best option would be to.. a. Increase the following distance between you and the car in front of you b. Slam on your breaks immediately c. Speed up to increase the space between you and the tailgating car d. Slowly and steadily apply your breaks

Answers

Answer:

D. Slowly and steadily apply your breaks.

Explanation:

When a person is being tailgated by another vehicle there's a risk of accident, due to the difference of speeds. When someone is being tailgated by another vehicle, it's because they vehicle doesn't work, cannot move by itself, so one vehicle impulse another.

To avoid any accident, the vehicle that's being tailgated must apply breaks often and slowly to try to maintain the same constant distance and speed than the other vehicle. This constant distance is what avoid accidents.

Therefore, the right answer is D.

Answer:

Your answer here is D

Explanation:

Slowly pressing your breaks will help ensure you are not hit by the other car. If they hit you its their fault. Hope this helps :)!

Acoustics involves the study of _______ and the mediums through which they travel.A.Light waves
B.mechanical waves
C.electromagnetic waves
D.gamma rays

Answers

Answer: The correct option is B.

Explanation:

Acoustic deals with the study of mechanical waves and the mediums through which they travel. It includes sound, infra sound, ultrasound and vibrations.

The mechanical wave is a wave which can travel through a material medium. It can travel through solid, liquid and gases. Sound is the mechanical vibrations of the particles of a gaseous medium.

Therefore, acoustic involves the study of mechanical waves and the mediums through which they travel.

the answers B,mechanical waves

Most radiation is released as particles. Identify the type radiation that is not a particle.1.alpha
2.beta
3.gamma
4.positron

Answers

Gamma rays because it is a form of electromagnetic radiation. It has zero mass and no charge.

A bus travels 4 km due north and then 3 km due west goingfrom bus station A to bus station B. The magnitude of the bus'
displacement from station A to station B is __km

Answers

Here, we are required to find the magnitude of the bus

displacement from station A to station B.

The magnitude of the bus

displacement from station A to station B is 5km.

The magnitude of the displacement is the "distance between the starting position of a body or object and the end position of that body or object".

The bus moves 4kmnorth and then moves 3km west, forming a right triangle. Its displacement is therefore the length of the hypotenuse.

let

x = length of the hypotenuse.

x² = 3² + 4²

x² = 9 + 16

x² = 25

Then remove the square on x by adding square roots to both sides

√x² = √25

x = √25

x = 5

The magnitude of the bus's displacement from station A to station B is 5 km.

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Explanation:

The magnitude of the displacement is the distance between the starting position and the end position.

The bus moves north, then west, forming a right triangle. Its displacement is therefore the length of the hypotenuse.

x² = 3² + 4²

x = 5

The magnitude of the bus's displacement from station A to station B is 5 km.

2. How can iron fillings provide evidence that can be used to explain how two magnets exert forces on each other even though the magnets are not in contact with each other?

Answers

Answer: When the magnet was placed on the glass it attracted the iron filings

Explanation: iron is a negitive n a postive

Answer: k12 unit test

Iron filings can provide evidence that can be used to explain how two magnets exert forces on each other because each of the magnets can attract iron filings. Another thing is that the patterns of the iron fillings show lines of force that make the magnet's magnetic field. For example, when a magnet is placed in a container and you place iron fillings over the lid it makes a pattern showing the lines of forces making the magnetic field