3 years ago

As global population ______

Physics

1 answer:

Sedbober [7]3 years ago

6 0

Answer:

As global population a.) <u>increases</u> food production must a.) <u>increase</u>.

Example:

More people means more food must be produced.

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What is the acceleration of a 12kg box being pushed with 60N of force?

Mazyrski [523]

60/12 =5m/s^2
Force/mass

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3 years ago

The noise from a power mower was measured at 104 dB. The noise level at a rock concert was measured at 121 dB. Find the ratio of

UkoKoshka [18]

Based on the calculations, the ratio of the intensity of Ir to Ip is equal to 50.12.

<h3>How to find the ratio of the intensity?</h3>

Let the intensity of the power mower be Ip.

Let the intensity of the rock music be Ir.

Mathematically, sound intensity level can be calculated by using this formula:

$\beta = 10 log(\frac{I}{I_{ref}} )$

<u>Where:</u>

I is the intensity of the sound.

Making I the subject of formula, we have:

I = Io × $10^{\frac{\beta }{10} }$

For Ip, we have:

Ip = Io × $10^{\frac{104 }{10} }$

Ip = Io × $10^{10.4}$

For Ir, we have:

Ir = Io × $10^{\frac{121 }{10} }$

Ir = Io × $10^{12.1}$

Now, we can find the ratio of the intensity:

Ir/Ip = Io × $10^{12.1}$ /Io × $10^{10.4}$

Ir/Ip = $10^{12.1}$ / $10^{10.4}$

Ir/Ip = $10^{12.1 -10.4}$

Ir/Ip = $10^{1.7}$

Ir/Ip = 50.12.

Read more on sound intensity here: brainly.com/question/17062836

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8 0

2 years ago

A car moving at 44 km/ h skids 16 m with locked brakes. How far will the car skid with locked brakes at 110km/ h

svp [43]

Answer:

100 m

Explanation:

44 km/h = 12.2 m/s

110 km/h = 30.6 m/s

Given:

Δx = 16 m

v₀ = 12.2 m/s

v = 0 m/s

Find: a

v² = v₀² + 2aΔx

(0 m/s)² = (12.2 m/s)² + 2a (16 m)

a = -4.67 m/s²

Given:

v₀ = 30.6 m/s

v = 0 m/s

a = -4.67 m/s²

Find: Δx

v² = v₀² + 2aΔx

(0 m/s)² = (30.6 m/s)² + 2 (-4.67 m/s²) Δx

Δx = 100 m

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3 years ago

Help me plzzz I need answers

soldier1979 [14.2K]

Answer:

i think it is B

Explanation:

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3 years ago

What is the energy (in mev) released in the alpha decay of 239pu?

qwelly [4]

Answer:

When Pu-239 releases an alpha particle, it loses 2 protons and 2 neutrons so it becomes U-235.

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3 years ago