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2 years ago

Is there a sound loud enough to kill a person ?

Physics

2 answers:

Svetllana [295]2 years ago

7 0

Yes, In space I believe go to the NASA website and search your question there.

shepuryov [24]2 years ago

6 0

In space there is. Items such as a supernova will instantly end your life.

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A 210 Ohm resistor uses 9.28 W of

IgorLugansk [536]

Resistance=R=210Ohm
Power=9.28W=P

Current=I

$\boxed{\sf P=I^2R}$

$\\ \sf\longmapsto I^2=\dfrac{P}{R}$

$\\ \sf\longmapsto I^2=\dfrac{9.28}{210}$

$\\ \sf\longmapsto I^2\approx0.04$

$\\ \sf\longmapsto I\approx\sqrt{0.04}$

$\\ \sf\longmapsto I\approx\sqrt{\dfrac{4}{100}}$

$\\ \sf\longmapsto I\approx\dfrac{\sqrt{4}}{\sqrt{100}}$

$\\ \sf\longmapsto I\approx\dfrac{2}{10}$

$\\ \sf\longmapsto I\approx0.2A$

4 0

2 years ago

Review 1: A plane is located x = 40 miles (horizontally) away from an airport at an altitude of h miles. Radar at the airport de

-Dominant- [34]

Explanation:

Let h is the height of the plane above ground. x is the horizontal distance between the ground and the airport. Let s(t) is the distance between the plane and the airport. So,

$s(t)^2={h^2+x^2}$ ...........(1)

Given, h = 4, x = 40 and s(t) = -20 mph

Differentiate equation (1) wrt t

$2s(t)s'(t)=2x(t)x'(t)$

$x'(t)=\dfrac{s(t)s'(t)}{x(t)}$

When x = 40, $s(t)=\sqrt{40^2+4^2}=40.19\ m$

$x'(t)=\dfrac{-240s(t)}{x(t)}$

$x'(t)=\dfrac{-240\times 40.19}{40}$

$x'(t)=-241.14\ m/s$

So, the speed of the airplane is 241.14 m/s. Hence, this is the required solution.

8 0

2 years ago

Water is returned from earth’s surface to the atmosphere by

Tems11 [23]

Answer:

Evaporation

Explanation:

Evaporation is a form of mass tranfer phenomena where by water are moved from the earth surface into the atmosphere as vapours,it is path of the water cycle a decription of the path moved by land water until it turns into rain, humidity,air and temperature are factors that influence evaporation though evaporation can happen at all temperature

4 0

2 years ago

How many Sig Figs (Significant Figures) are in each number? 5070.0 870.064080

nlexa [21]

∑ Hey, Lethality ⊃

Answer:

5070.0 has 5 significant figures

870.064080 has 9 significant figures

Explanation:

Given:

How many Sig Figs (Significant Figures) are in each number?

5070.0

870.064080

Solution:

-------------------------------------------------------------------------------------------------------------

5070.0

5070.0 has 5 significant figures ( 5 , 0 , 7 , 0 , and 0 )

Number of significant figures: 5

-------------------------------------------------------------------------------------------------------------

870.064080

870.064080 has 9 significant figures ( 8, 7 ,0,0, 6,4,0,8 and 0 )

Number of significant figures: 9

-------------------------------------------------------------------------------------------------------------

xcookiex12

8/23/2022

5 0

11 months ago

What is the string theory.

Leno4ka [110]

String the·o·ry
noun
a cosmological theory based on the existence of cosmic strings.

7 0

2 years ago

Read 2 more answers