Please help on this one?

Nick’s swimming goggles are made of blue plastic. When he straps them on, he notices that the goggles change the color of the ob

nydimaria [60]

Blue

Absorbs

reflected from

8 0

4 years ago

Read 2 more answers

Suppose you are running late in the morning and drying your hair in the kitchen with the hairdryer plugged into the outlet with

lesantik [10]

Answer:

Explanation:

It is given that Hair dryer , Toaster and coffeepot are working simultaneously with power 1200 W , 700 W and 800 W respectively.

So the total power of system is $P_t=1200+700+800=2700\ W$

it is given that they work properly until toast is on.

By switching on the toast, appliance stop working because it may cause the circuit to break to safeguard the circuit.

Circuit breaker frame are used in home to prevent the short circuit

7 0

4 years ago

Why do faults often occur along plate boundaries?

Slav-nsk [51]

Earthquakes can also occur far from the edges of plates, along faults. Faults<span> are cracks in the earth where sections of a plate (or two plates) are moving in different directions. Faults are caused by all that bumping and sliding the plates do. They are more common near the edges of the plates.</span>

4 0

3 years ago

Nuclear reactions produce huge amounts of energy by transforming tiny amounts of matter. Please select the best answer from the

vitfil [10]

True, nuclear reactions, whether they are fission or fusion depend on generating energy by converting a certain amount of mass by breaking the atom or combining two atoms together.

3 0

4 years ago

Read 2 more answers

A pressure vessel that has a volume of 10m3 is used to store high-pressure air for operating a supersonic wind tunnel. If the ai

Anna71 [15]

Answer:

The mass of air stored in the vessel is 235.34 kilograms.

Explanation:

Let supossed that air inside pressure vessel is an ideal gas, The density of the air ( $\rho$ ), measured in kilograms per cubic meter, is defined by following equation:

$\rho = \frac{P\cdot M}{R_{u}\cdot T}$ (1)

Where:

$P$ - Pressure, measured in kilopascals.

$M$ - Molar mass, measured in kilomoles per kilogram.

$R_{u}$ - Ideal gas constant, measured in kilopascal-cubic meters per kilomole-Kelvin.

$T$ - Temperature, measured in Kelvin.

If we know that $P = 2026.5\,kPa$ , $M = 28.965\,\frac{kg}{kmol}$ , $R_{u} = 8.314\,\frac{kPa\cdot m^{2}}{kmol\cdot K}$ and $T = 300\,K$ , then the density of air is: