When white light splits into the spectrum of colours of which it is composed, it is said to have undergone

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Answer 1

Answer: When white light splits into the spectrum of colors of which it is composed, it is said to have undergone dispersion. Dispersion happens when white light gets separated into colors based on the wavelength of the light. Due to dispersion of light, people can see a rainbow in the sky. I hope the answer helps.

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A woman takes her dog Rover for a walk on a leash. She pulls on the leash with a force of 30.0 N at an angle of 29° above the horizontal sidewalk. What force is tending to pull Rover forward, parallel to the horizontal?
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Currently, Earth's tilt is closest to _____.A. 0°B. 14.5°C. 23.5°D. none of these because, Earth's tilt changes dramatically with each orbit
Suppose that now you want to make a scale model of the solar system using the same ball bearing to represent the sun. How far from it would you place a sphere representing the earth? (Center to center distance please.) The distance from the center of the sun to the center of the earth is 1.496×10111.496×1011 m and the radius of the sun is 6.96×1086.96×108 m.
When alvin woke up in the morning it was -9 degrees by the morning it was -2 degrees what is the change in temperatures

On the Moon, gravitational field is around 1.6 N/kg. How does this affect gravitational potential and kinetic energy of objects dropped from a height on the Moon as compared with Earth?

Answers

Answer:An object with mass in a gravitational field experiences a force called weight. This weight on the moon is about 1/6 but the mass of that object remains the same due to the moon's gravitational field which is less than the earth.

Explanation:There are factors that affect the gravitational potential and kinetic energy . They are:

1. The height of the object in the moon

2.The mass of the object

3. The strength of the gravitational field

4. The change in position of the object.

Trumpeter A holds a B-flat note on the trumpet for a long time. Person C is running towards the trumpeter at a constant velocity. Person B is running away from the trumpeter at the same rate. Person D is standing still the whole time.Which person hears a frequency that is lower than the B-flat?
A) Person A
B) Person B
C) Person C
D) Person D

Answers

The person running towards the trumpet, Mr. C,
hears a higher frequency.

The person running away from the trumpet, Mrs. B,
hears a lower frequency.

The trumpeter, Mr. A, and the person who is just standing still
and listening, Miss D, both hears the beautiful perfect B-flat.

Answer:B

Explanation:Making fast and simple :)

A magnetic field forms around a moving electric charge, resulting in a magnetic field. Which does this describe?

A.
how electric charges can be used to make current flow

B.
how electric charges can be used to create a magnetic field

C.
how a magnetic field can be used to generate an electric current

D.
how a magnetic field can be used to generate electrons

Answers

B.
how electric charges can be used to create a magnetic field
(how I know, just took it, the test I mean)

A rain gutter is to be constructed from a metal sheet of width 30 cm by bending up one-third of the sheet on each side through an angle θ . How should θ be chosen so that the gutter will carry the maximum amount of water?

Answers

Answer:

Explanation:

The volume of the water carried will be proportional to the cross-sectional area. The cross-section is a trapezoid with height 10sint, where t represents theta. The top of the trapezoid is 10+(2)(10cost), i.e. 10 + 20cost. The base of the trapezoid is 10.

Area of trapezoid = (average of bases) times (height)

= ([10 + (10 +20cost)] / 2 ) 10 sint

= (10 + 10cost)(10sint)

= 100sint + 100sintcost, call this A(t). You need to maximize. So differentiate and set equal to zero.

dA/dt = -100sin(t)^2+100cos(t)+100cos(t)^2 = 0, divide by 100:

-sin(t)^2 + cos(t) + cos(t)^2 = 0, replace sin^2 by 1-cos^2

2cos(t)^2 + cos(t) - 1 = 0, factor

(1+cos(t))(2cos(t)-1)=0, so

cos(t)=1, t=0 that give a min (zero area) not a max, or

cos(t) = 1/2, so t=60 degrees. This gives the max.

Which type of water body does water move the slowest?

Answers

Answer:

The answer is Groundwater

Explanation:

In my text book for social studies it says a canal

Melting, freezing, and boiling are _____________ changes. Question 3 options: A. compound B. molecular
C. isotope
D. physical
E. chemical

Answers

To solve the problem we must know about Melting, freezing, and boiling.

What is Melting?

Melting is the process by which a solid is converted to liquid.

What is Freezing?

Freezing is the process by which a liquid is converted to solid.

What is boiling?

Boiling is the vaporization of a liquid when it reaches its boiling temperature.

Now, as we know when there is a change in the phase of a substance, only the physical changes occur in that substance. For example, water when frozen, forms ice although there is a phase change the properties of the water are still the same, still, it will conduct electricity, etc.

Hence, Melting, freezing, and boiling are physical(phase) changes.

Learn more about Melting, freezing, and boiling:

brainly.com/question/2716603

Melting, freezing, and boiling are PHYSICAL changes. Reason why, you can SEE their PHYSICAL appearance change. Melting, you can see a solid (ice) melt, and turn into a liquid (that's a physical change). Freezing, is when a liquid (possibly water) becomes a solid. It's features change, thus it's a physical change. Boiling, when something is boiled you can see it physically BUBBLE. It heats up, and you can see steam escape from it. This is a physical change, but when you turn it off, the water goes back to normal. But not exactly. When you boil water, you're cleaning and purifying the water. So it become purified drinking water. Also just a tip, when boiling water, make sure the temperature is above 185° F (85° C) so it'll be able to kill all bacteria.
(I wrote this myself, it's my work.)
Good luck with your studies, hope this helps!! ^-^

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