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2 years ago

12

A person has driven a car 180 m in 40 seconds. What is the car’s speed?

1 answer:

777dan777 [17]2 years ago

4 0

Answer:

4.5 m/s = 16.2 km/h

Explanation:

The speed is the ratio of distance to time:

speed = (180 m)/(40 s) = 4.5 m/s

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Engineering controls are the physical changes that employers make to the work environment or to equipment that make it safer to

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Answer:

Engineering Controls. The best engineering controls to prevent heat-related illness is to make the work environment cooler and to reduce manual workload with mechanization. A variety of engineering controls can reduce workers' exposure to heat: Air conditioning, Increased general ventilation , Cooling fans , Local exhaust ventilation at points of high heat production or moisture, Reflective shields to redirect radiant heat , Insulation of hot surfaces Elimination of steam leaks , Cooled seats or benches for rest breaks , Use of mechanical equipment to reduce manual work, Misting fans that produce a spray of fine water droplets.

Hope this helped you!

Explanation:

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3 years ago

What is the volicity of a rocket?

Marysya12 [62]

Answer:

7.9 kilometers per second

Explanation:

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2 years ago

Read 2 more answers

If you replace the text value in an associative dimension, the text value will not change when the

Nostrana [21]

Answer:

C

Explanation:

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3 years ago

The total solids production rate in an activated sludge aeration tank is 7240 kg/d on a dry mass basis. It is necessary to maint

snow_lady [41]

Answer:

volume of biological sludge = 28.566 m³ per day

Explanation:

given data

mass of solid = 7240 kg/day

initial moisture content = 78%

solution

here percentage of solid will be

% of solid = 100 - initial moisture content

% of solid = 100 - 78 = 22 %

so that

mass of sludge produced = $\frac{100}{100 - P} M$ kg per day

put her value

mass of sludge produced = $\frac{100}{100 - 78} 7240$ kg

mass of sludge produced = 32909.09 kg

so

specific gravity of sludge = $\frac{\rho sludge}{\rho water }$

and as we know that

$\frac{100}{S sludge} = \frac{solid percentage}{S solid} = \frac{water percentage}{S water}$

$\frac{100}{S sludge} = \frac{22}{2.5} = \frac{78}{1}$

$S sludge$ = 1.152

so that

density of sludge = S sludge × density of water

density of sludge = 1.152 × 1000

density of sludge = 1152 kg/m³

so that

volume of biological sludge = $\frac{mass sludge produce}{\rho sludge}$

volume of biological sludge = $\frac{32909.09}{1152}$

volume of biological sludge = 28.566 m³ per day

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3 years ago

What happens to the odometer reading when a car drives beyond its maximum reading?

Olin [163]

The odometer keeps running after you move beyond its upper limit, but the largest place values cannot be displayed due to overflow error.

8 0

2 years ago