A stars mass determines ?

Answers

Answer 1

Answer: A star mass determines Core temperture

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A piece of metal and a piece of brick are both sitting in the sun if both are the same mass what property of matter will make the metal feel hotter to touch

Answers

Metals are highly conductive both electrically and thermally because of its highly ordered crystalline structure of metallic particles. Brick is poor conductor and will be less hot than metal.

What is conduction?

Conduction is the mechanism of heat transfer in solids. Solids are composed of closely packed particles arranged in a chain with strong intermolecular forces.

Metals are highly conductive. They have free electrons which are delocalized in the crystal lattice. They can be easily transited through and make the material conductive.

Bricks is poor conductor of heat and odes not conduct electrically, it easily melts at high temperatures and easily cools as well. Therefore, at the surface of sun, the highly conductive metal will be more hotter.

To find more on conduction, refer here:

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The piece of metal will feel hotter to touch because of its heat conductance. whereas the brick does not conduct heat as well as the metal. Hence the piece of metal feeling hotter to touch.

If you increase the height from which a water droplet falls, will this change the pattern of the ripples produced?

Answers

yes because it is coming from a different height and speed

A conducting coil of 1850 turns is connected to a galvanometer, and the total resistance of the circuit is 30 Ω. The area of each turn is 4.00 × 10-4 m2. This coil is moved from a region where the magnetic field is zero into a region where it is nonzero, the normal to the coil being kept parallel to the magnetic field. The amount of charge that is induced to flow around the circuit is measured to be 8.0 × 10-3 C. Find the magnitude of the magnetic field.

Answers

Answer:

0.324 T

Explanation:

Parameters given:

Number of turns, N = 1850

Resistance, R = 30Ω

Area of each turn, A = $4.00 * 10^(-4) m^2$

Charge in the circuit, q = $8.0 * 10^(-3) C$

The induced EMF in the coil is given as:

$V = (-NBA)/(t)$

EMF is also given in terms of current, I, and resistance, R, as:

V = IR = $(-NBA)/(t)$

=> $I*R*t = -NBA$

Charge, q, is the product of current and time. Hence:

It = q

=> $q*R = -NBA$

Hence, magnetic field, B, will be:

$B = (qR)/(-NA)$

$B = (8 * 10^(-3) * 30)/(-1850 * 4 * 10^(-4)) \n\n\nB = -0.324 T$

The magnitude of magnetic field, |B| will be |-0.324| = 0.324 T

What does the doppler effect indicate about the motion of galaxies?

Answers

When galaxies move farther away the wavelength of the light is longer causing the galaxy to shift red but if it moves closer, the wavelength of the light gets smaller causing the galaxy to blue shift. The reason that the wavelength increases or decrease is due to the doppler effect.

An incandescent light bulb produces light when electrons flow through thea. air.
b. glass.
c. filament.
d. vacuum.

Answers

Electriccurrent passes through a filament of an incandescent bulb, thereby increasingit temperature. When current flows, it contains electrons through the filamentto produce light. The answer is c. Typically, incandescent light bulb consistsof a glass enclosure that contains tungsten filament. The glass enclosure containseither a vacuum or an inert gas that serves as the filament protection fromevaporating. Incandescent light bulbs contain a stem attached at to its base toallow the electrical contacts to run through the envelope without gas or airleaks

Answer:filament

Explanation:

Milwaukee is 121 mi (air miles) due west of Grand Rapids. Maria drives 255 mi in 4.75 h from Grand Rapids to Milwaukee around Lake Michigan. Find: a. Her average driving speed
b. Her average travel velocity

Answers

a).
Average speed = (distance driven) / (time to drive the distance)

   = (255 miles) / (4.75 hours)

   = (255/4.75) (mile/hour) = 53.7 miles per hour .

b).
Average velocity =

   (displacement) / (time for the trip)

   = (distance and direction from
       start-point to end-point,
   regardless of the route)    /    (time for the trip)

   = (121 miles west) / (4.75 hours)

   = (121 / 4.75) (miles per hour west)

   = 25.5 miles per hour west .

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