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3 years ago

Ways to stop pollution

Physics

1 answer:

Ghella [55]3 years ago

3 0

Answer:

on days when high particle levels are expected, take these extra steps to reduce pollution:

Explanation:

1) reduce the number of trips you take in your car.

2) reduce or eliminate fireplace and wood stove use.

3) avoid burning leaves, trash, and other materials.

4) avoid using gas-powered lawn and garden equipment.

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An acorn falls from an oak tree. You note that it

Vaselesa [24]

Answer:9.8 m/s²

Explanation:

It was going at 9.8m/s² as this is the acceleration of an object due to gravity

when an object falls it accelerates at a consant and uniform speed which is 9.8m/s²

6 0

3 years ago

What happens to a liquid beyond its certain temperature

Natalka [10]

Answer: what do you mean ''beyond certain temperature'', Do you mean ask in cooling the liquid down or heating the liquid up?

Explanation:

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2 years ago

Imagine you are sitting on a surfboard in the ocean, waiting to catch a big wave. When the ocean is still, you are sitting at a

aliina [53]

B. What is the frequency

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3 years ago

What's the real power of a purely resistive circuit in which the RMS voltage measures 80 volts and the RMS current measures 5 am

Nat2105 [25]

Answer:

D.400 watt

Explanation:

B/c Pave=IrmsVrms
Pave=(5)(80)
Pave=400 watt

where Pave = average power

Irms=RMS current &

Vrms=RMS voltage

7 0

2 years ago

At a distance of 8 m, the sound intensity of one speaker is 66 dB. If we were to place 3 speakers in a circle of radius 8 m, wha

ludmilkaskok [199]

Answer:

dβ = 70. 77 dβ

Explanation:

The intensity of sound in decibels is

dβ = 10 log I/I₀

let's look for the intensity of this signal

I / I₀ = 10 dβ/10

I / I₀ = 3.981 10⁶

the threshold intensity of sound for humans is I₀ = 1 10⁻¹² W / m²

I = 3.981 10 ⁶ 1 10⁻¹²

I = 3,981 10⁻⁶ W / m²

It is indicated that 3 cornets are placed in the circle, for which total intensity is

I_total - 3 I

I_total = 3 3,981 10⁻⁶

I_total = 11,943 10⁻⁶ W / m²

let's reduce to decibels

dβ = 10 log (11,943 10⁻⁶/1 10⁻¹²)

dβ = 10 7.077

dβ = 70. 77 dβ

3 0

3 years ago