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3 years ago

Answers to question 2,3,4

Physics

2 answers:

tino4ka555 [31]3 years ago

8 0

2 is B, and 3 is c and 4 is c I hope this helps because I’ve had this before

Sati [7]3 years ago

5 0

Answer:

OMG

these are sooooooo hard

Explanation:

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Where is the epicenter (it's about earthquakes)

sweet [91]

Answer:

The epicenter is the point on the earth's surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins.

<h2><u>PLEASE MARK ME BRAINLIEST, PLEASE</u></h2>

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3 years ago

Read 2 more answers

Suppose you hit a steel nail with a 0.500-kg hammer, initially moving at 15.0 m/s and brought to rest in 2.80 mm. How much is th

katrin [286]

Complete Question

Suppose you hit a steel nail with a 0.500-kg hammer, initially moving at 15.0 m/s and brought to rest in 2.80 mm. How much is the nail compressed if it is 2.50 mm in diameter and 6.00-cm long.What Average force is excreted on the Nail

Answer:

$F=2*10^{4}N$

Explanation:

From the question we are told that:

Mass $m=0.500kg$

Initial Velocity $V=15.0m/s$

Distance $x=2.80mm=>0.00280m$

Diameter $d=2.50mm=>0.00250m$

Length $l=6.00cm=>0.6m$

Generally the equation for Force is mathematically given by

$F=\frac{mv^2}{2d}$

$F=\frac{0.500*15^2}{2.80*10^{-3}}$

$F=2*10^{4}N$

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3 years ago

What happens when a candle burns?

slega [8]

Answer:

oxygen is used up is the answer

Explanation:

These vaporized molecules are drawn up into the flame, where they react with oxygen from the air to create heat, light, water vapor (H2O) and carbon dioxide (CO2).

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3 years ago

A 2.1 cm length of tungsten filament in a small lightbulb has a resistance of 0.067 ω. find its diameter. the resistivity of the

kkurt [141]

The resistance of an ohmic material is given by
$R= \frac{ \rho l}{a}$
where l is the length and a is the cross sectional area. For a circular wire, this area is that of a circle:
$R= \frac{\rho l}{ {d^2} } \frac{4}{\pi}=\frac{5.6\times10^-8 \times0.021m\times4}{\pi d^2} = \frac{1.497\times 10^-9}{d^2}$
Then solving for diameter, d:
$d^2=\frac{1.497\times 10^-9}{0.067}=2.235\times10^-8$
$d=0.1495mm$

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4 years ago

Building a mass transit system is likely to have which of the following effects

iren2701 [21]

Well pollution will most likely go down since people won't be driving in there own cars<span />

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3 years ago