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jolli1 [7]
3 years ago
12

What is a quasar made of?

Physics
1 answer:
vodomira [7]3 years ago
3 0

Answer: A quasar is an exceptionally bright active galactic nucleus (AGN) containing a supermassive black hole surrounded by a gaseous accretion disk with a mass ranging from millions to billions of times that of the Sun.

Explanation: Energy is emitted in the form of electromagnetic radiation when gas in the disk descends towards the black hole, which can be seen across the electromagnetic spectrum.

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Which number would most likely increase if the amount of recycled materials decreased?
sergiy2304 [10]

Answer:

its d the nuber of gas powerd cars

5 0
3 years ago
___________ are passed from parents to offspring, determining an offspring traits.
Alecsey [184]
Chromosomes are passed from parents to offspring, determining an offsprings traits.
7 0
4 years ago
The Eiffel Tower is built of wrought iron approximately 300 m tall.Estimate how much its height changes between January (average
Rina8888 [55]

The concepts required to solve this problem are the thermodynamic expressions of expansion and linear expansion.

In mathematical terms the dilation of a body can be expressed as

\Delta L = L_0 \alpha \Delta T

Where,

L_0 = Initial Length

\alpha = Thermal coefficient of linear expansion

\Delta T = Change in Length

Our values are given as

L_0 = 300m

T_f = 25\°C

T_i = 2\°C

\alpha = 12*10^{-6}C^{-1} (Iron)

Replacing at the equation we have,

\Delta L = L_0 \alpha \Delta T

\Delta L = (300)(12*10^{{-6})(25-2)

\Delta L = 0.0828m

Therefore the change in the height is 8.28cm

3 0
3 years ago
If a marble is released from a height of 1955 cm, how long would it take to hit the ground?
Morgarella [4.7K]

Answer:

1.997s = 2.0s

Explanation:

From equation of motion,

S = ut + 1/2 gt²

u = 0 m/s

t = ?

g = 9.8 m/s²

S = 1955cm = 19.55m

19.55 = 0 + 1/2 * 9.8 * t²

19.55 * 2 = 9.8t²

t² = 19.55 * 2 / 9.8

t² = 3.987

t = (3.987)^½ (take the square root of both sides)

t = 1.997s = 2.0s

7 0
3 years ago
Which statement is true?
slamgirl [31]
B. Without the earth's moon, life on Earth would not be possible.
8 0
4 years ago
Read 2 more answers
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