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3 years ago

Bromine vapour is heavier than air. even so it's spreads upwards in the experiment above. Why?

Physics

1 answer:

Andrews [41]3 years ago

8 0

Answer:

Bromine is heavier than air in terms of its atomic weight. Look at the periodic table bromine is lower than oxygen, nitrogen, etc. bromine in its gaseous phase will still float in air. This is due to the fact that gaseous bromine takes up a wide volume of space while having little mass.

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Match the layer of Earth with its characteristic.

mote1985 [20]

Answer:

Explanation:

The Asthenosphere -- drives the movement in the plates

It is a weak and flexible part of the upper mantle of the planet Earth.

It is located below the lithosphere. The depth of it is between 200 and 80 kilometers below the surface. It is usually solid but in some regions it is fluid. The temperature dictates the thickness of the Asthenosphere.

The Core -- the hottest layer of the Earth.

The inner Core of the Earth is a layer that's located in the core of it. By definition, it is a rock-hard ball that has the radius of 1,220 kilometers, making it 20% of the Earth's radius and 70% of the Moon's radius. The samples are not discovered. It is believed that it has the composition of iron-nickel infusion along with other elements. The temperature is appx. 5430 °C, which is similar to the temperature of the surface of the Sun.

Mesosphere -- contains the lower mantle

By definition, it comes from the Greek word mesos, which means '' middle ''.

It is the third layer of the Earth. It is located above the stratosphere and below the thermosphere. The higher the altitude, the lower the temperature. It ends in the coldest part of the Earth, Mesopause. And it begins at the Stratosphere.

Lithosphere -- contains the tectonic plates

By the definition, it is also a word that came from the Greek language. It comes from the word '' lithos '' which means '' rocky ''.

It is a hard, outer part of the Earth.

On the planet Earth, it is made out of the crust of the upper mantle. The rocks from the Lithosphere are elastic.

They are two types of Lithosphere -- the oceanic Lithosphere and Continental Lithosphere.

6 0

3 years ago

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The lighting needs of a storage room are being met by six fluorescent light fixtures, each fixture containing four lamps rated a

Amanda [17]

Answer:

amount of energy = 4730.4 kWh/yr

amount of money = 520.34 per year

payback period = 0.188 year

Explanation:

given data

light fixtures = 6

lamp = 4

power = 60 W

average use = 3 h a day

price of electricity = $0.11/kWh

to find out

the amount of energy and money that will be saved and simple payback period if the purchase price of the sensor is $32 and it takes 1 h to install it at a cost of $66

solution

we find energy saving by difference in time the light were

ΔE = no of fixture × number of lamp × power of each lamp × Δt

ΔE is amount of energy save and Δt is time difference

ΔE = 6 × 4 × 365 ( 12 - 9 )

ΔE = 4730.4 kWh/yr

and

money saving find out by energy saving and unit cost that i s

ΔM = ΔE × Munit

ΔM = 4730.4 × 0.11

ΔM = 520.34 per year

and

payback period is calculate as

payback period = $\frac{excess initial cost}{\Delta M}$

payback period = $\frac{32 + 66}{520.34}$

payback period = 0.188 year

8 0

4 years ago

The magnetising current in a transformer is rich in ______________ harmonic?

sukhopar [10]

The magnetizing current in a transformer is rich in 3rd harmonic. This is because harmonics are AC voltages and currents with frequencies that are generally higher.

5 0

3 years ago

How does a seat belt stop your body from moving in a forward motion in a car?

stiks02 [169]

D, when a moving car suddenly stops, your body is still moving forward until the seatbelt stops you.

When things move, there is always friction. It's what makes cars move in the first place. The inside of the car doesn't move, however the wheels on the car are moving at a rapid pace. When the car stops violently, everything inside the car is thrown. The seat belt acts as a safety precaution if an accident happens.

Mark brainliest?

5 0

3 years ago

a motorcycle at a stoplight takes 4.22 seconds to accelerate to 28.0 m/s after thew light turns green. what is its average accel

erik [133]

I think its 6.635 not very sure, sorry if it doesn't help.

7 0

4 years ago

Read 2 more answers