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3 years ago

Explain how a star's absorption spectrum and the concept of red shift help support the Big Bang Theory.

Physics

1 answer:

marta [7]3 years ago

4 0

Answer:

Red shift supports the big bang theory. ... The light from distant galaxies is red shifted (this tells us the galaxies are moving away from us) and the further away the galaxy the greater the red shift (this tells us that the more distant the galaxy the faster it is moving). Constellations look like they are moving because earth is rotating on it's axis.

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How many days for the moon to make a complete circuit around the Earth?<br>

Andru [333]

Answer:

It takes the Moon 27.3 days to complete a single orbit around Earth.

Explanation:

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3 years ago

Read 2 more answers

A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min

schepotkina [342]

Answer:

Average speed of the trip = 52.9 km/h

Distance between initial pairs of cities (start to end) = 70.0 km

Explanation:

Since distance = speed × time

If she drives 30.0 min at 80.0 km/h

Distance covered = (30/60) × 80 = 40.0 km

Again she drives 45.0 min at 40 km/h

Distance covered = (45/60) × 40 = 30.0 km

Again she drives 12.0 min at 100 km/h

Distance covered = (12/60) × 100 = 20.0 km

Total distance covered = 40.0 + 30.0 + 20.0

= 90.0 km

Total time spent = 30.0 + 45.0 + 12.0 +15.0

= 102 min

Average speed for the trip = Total distance covered/total time spent

= 90/(102/60)

= 52.9 km/h

Distance between initial cities will be between the start of one city to the end of another

Between the first pairs = 40.0 + 30.0 = 70.0 km

Between the second pairs = 30.0 + 20.0 = 50.0 km

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4 years ago

Give two examples of energy being transformed from one type to another

GaryK [48]

Answer:

Explanation:

For example, an ice cube has heat energy and so does a glass of lemonade. If you put the ice in the lemonade, the lemonade (which is warmer) will transfer some of its heat energy to the ice.

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3 years ago

What is quantum computing?

Natali5045456 [20]

It is a field of study that make direct use of phenomena that is "quantum-mechanincal", such as superposition and entanglement. It's used to perform operations on data

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3 years ago

A +27 nCnC point charge is placed at the origin, and a +6 nCnC charge is placed on the xx axis at x=1mx=1m. At what position on

svet-max [94.6K]

Answer:

The position on the x axis is 0.32 m.

Explanation:

Given that,

Point charge = 27 nC

Charge = 6 nC

Distance = 1

We need to calculate the distance