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2 years ago

Nonmetals are usually _____ which means that they evaporate easily.

Physics

2 answers:

maw [93]2 years ago

7 0

Answer

4.volatile

Explanation

Volatile substances are substances that are can evaporate easily. The chemical definition of volatile substance is one that can boil at low temperatures and change from liquid to gas easily.

From choices given in the question, the correct answer is 4.volatile

steposvetlana [31]2 years ago

3 0

The answer to this question is that non metals are volatile. Volatile means evaporating easily. Non metals have the characteristics and properties of being brittle and poor conductors of heat and electricity. Non metals are also good oxidizing agents and physically they may be in liquid, solid or gas state. Examples of non metals are carbon, sulfur, argon, neon, and hydrogen.

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What is the unit for electrical power?

Vaselesa [24]

Answer:

The answer is Watt

Explanation:

Electricity is measured in Watts and kilowatts

Electricity is measured in units of power called Watts, named to honor James Watt, the inventor of the steam engine. A Watt is the unit of electrical power equal to one ampere under the pressure of one volt. One Watt is a small amount of power.

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3 years ago

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lys-0071 [83]

Comes in pairs
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2 years ago

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solmaris [256]

Answer:

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2 years ago

Frim the castle wall 20 m high shot an arrow. The initial speed of the bow is 45 m/s directed 40 degrees above horizontal. Find

True [87]

Answer:

Range of arrow = 225.09 meter

Final horizontal velocity = 34.47 m/s

Explanation:

We have equation of motion $s=ut+\frac{1}{2} at^2$ , where u is the initial velocity, t is the time taken, a is the acceleration and s is the displacement.

Considering the vertical motion of arrow ( up direction as positive)

We have u = 45 sin40 = 28.93 m/s, s = -20 m, a = acceleration due to gravity = $-9.8m/s^2$ .

$-20=28.93*t-\frac{1}{2} *9.8*t^2\\ \\ 4.9t^2-28.93t-20=0$

t = 6.53 seconds or t = -0.63 seconds

So time = 6.53 seconds.

Considering the horizontal motion of arrow

u = 45 cos 40 = 34.47 m/s, t = 6.53 s, a = $0m/s^2$

$s=34.47*6.53+\frac{1}{2} *0*6.53^2\\ \\ s=225.09m$

So range of arrow = 225.09 meter

Horizontal velocity will not change , final horizontal velocity = 34.47 m/s.

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3 years ago

What is a physical property of matter

lyudmila [28]

ANSWER: B

EXPLANATION: There are four natural states of matter: Solids, liquids, gases and plasma. The fifth state is the man-made Bose-Einstein condensates. In a solid, particles are packed tightly together so they don't move much.

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2 years ago