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zloy xaker [14]
2 years ago
9

Which of the following statements about Australian football is TRUE?

Physics
2 answers:
LUCKY_DIMON [66]2 years ago
5 0

Answer:

B.

Goals are scored by kicking the ball through goalposts.

Explanation:

kiruha [24]2 years ago
4 0

I don’t now the answer sorry
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Which statement best defines an electric field?
Shkiper50 [21]
A region around a charged particle or object within which a force would be exerted on other charged particles or objects
5 0
3 years ago
2. A bus drove 8 meters East, then turned to drive 8 meters North, then 2 meters
Sphinxa [80]

Answer:

Long question good luck:)

Explanation:

3 0
2 years ago
The diagram shows a ballistic pendulum. A 200 g bullet is fired into the suspended 4 kg block of wood and remains embedded insid
adoni [48]

Question

What was the initial momentum of the bullet before collision?

Answer:

10 Kg.m/s

Explanation:

Momentum is a product of velocity of an object in m/s and its mass in kgs hence numerically expressed as p=mv where p is momentum, v is velocity and m is mass. Substituting m for 0.2 kg and v for 50 m/s then p=0.2*50=10 kg.m/s

5 0
3 years ago
A star is moving away from an observer at 1% of the speed of light. At what wavelength would the observer find an emission line
Ivan

Answer:

  λ = 5940 Angstroms

Explanation:

This is an exercise of the relativistic Doppler effect

        f’= f  √((1- v / c) / (1 + v / c))

Where the speed in between the strr and the observer is positive if they move away

Let's use the relationship

         c = λ f

         f = c /λ

We replace

              c /λ’ = c /λ  √ ((1- v / c) / (1 + v / c))

              λ = λ’ √ ((1- v / c) / (1 + v / c))

Let's calculate

             v = 0.01 c

             v = 0.01 3 10⁸

             v=  3 10⁶ m / s

             λ = 6000 √ [(1- 3 10⁶/3 10⁸) / (1+ 3 10⁶/3 10⁸)]

             λ = 6000 √ [0.99 / 1.01]

             λ = 5940 Angstroms

6 0
3 years ago
A container is filled to a depth of 25.0 cm with water. On top of the water floats a 32.0-cm-thick layer of oil with specific gr
den301095 [7]

Answer:

the answer is 32.0-25.0=7

Explanation:

the absolute pressure at the bottom of the container is 7

6 0
2 years ago
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