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pychu [463]
3 years ago
12

What do you use to light a laboratory burner

Physics
2 answers:
Hunter-Best [27]3 years ago
6 0
A needle valve and collar.
Yuliya22 [10]3 years ago
5 0
The lab burner may be one that burns alcohol or natural gas. In either case, when you're ready to heat something and need to light the burner, a match will do a fine job.
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A 500,000 kg cargo ship is traveling at 75 km/h when its engine is shut off. The magnitude of the frictional force between boat
Ymorist [56]

Answer:1.8 hr

Explanation:

Given

mass of cargo=500,000 kg

initial speed=75 km/h\approx 20.833 m/s

Frictional force=85 v

at t=0 engine is shut off so acquired speed is slowly decreasing

85v=-500,000\frac{\mathrm{d} v}{\mathrm{d} t}

85dt=-\frac{dv}{v}

Integrating both sides

85\int_{0}^{t}dt=-500,000\int_{20.83}^{6.944}\frac{dv}{v}

85t=500,000\ln \frac{1}{3}

t=6462.425 s

t=1.8 hr

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3 years ago
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Root mass
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3 years ago
A sample of a substance has a high density, yet a low particle motion. This sample must be a
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Identify the total number of energy levels that Zn would have
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