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zloy xaker [14]
3 years ago
10

Which units are used to express sound intensity? Decibels Hertz Volts Amperes

Physics
1 answer:
AnnyKZ [126]3 years ago
5 0
Decibels I think that's the answer
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Drawing a ray diagram for an object far from convex lens requires how many rays?
Crank

Answer

4

Explanation:

four rays can also explain the ray diagram if the object is at infinity

5 0
2 years ago
Models are frequently used in science to assist in the understanding of complex information. Models can include items like a wor
nordsb [41]
B. Three dimensional I’m almost positive
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2 years ago
You are exploring a distant planet. When your spaceship is in a circular orbit at a distance of 630 km above the planet's surfac
Anarel [89]

Answer:

R = 24.3 m

Explanation:

As we know that the orbital speed is given as

v = \sqrt{\frac{GM}{R + h}}

here we know that

v = 5500 m/s

R = 4.48 \times 10^6 m

h = 630 km

now we have

5500 = \sqrt{\frac{(6.6 \times 10^{-11})M}{4.48 \times 10^6 + 6.30\times 10^5}}

M = 2.34 \times 10^24 kg

now acceleration due to gravity of planet is given as

a = \frac{GM}{R^2}

a = \frac{(6.6 \times 10^{-11})(2.34 \times 10^{24})}{(4.48\times 10^6)^2}

a = 7.7 m/s^2

now range of the projectile on the surface of planet is given as

R = \frac{v^2 sin2\theta}{g}

R = \frac{14.6^2 sin(2\times 30.8)}{7.7}

R = 24.3 m

3 0
3 years ago
Why is the earth's magnetic field important for us?
Nataly_w [17]
It protects us from the magnetic/electrical radiation that comes from the sun. High radiation periods coincide with solar storms.
8 0
3 years ago
How many millimeters are 120 meters ? Help ! Please <3
blsea [12.9K]

Answer:

120,000

Explanation:

Millimeters to meters calculation-

Multiply by 1,000.

120 x 1,000 = 120,000.

This is the correct answer and formula.

Hope this helps!

8 0
3 years ago
Read 2 more answers
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