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3 years ago

Which is an example of radiation? Check all

Physics

2 answers:

vampirchik [111]3 years ago

8 0

Answer:

Explanation:

Examples are;

Ultraviolet light from sun.

Heat from a stove burner.

X-ray from an x-ray machine.

Alpha particle emit from a radio active decay of uranium.

Sound waves from your stereo.

Microwave from micro oven.

ultraviolet light from a black light.

Gamma radiations from a supernova.

AND MANY MORE.

USPshnik [31]3 years ago

6 0

Answer:

The answer to the following question is actually A.

Explanation:

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A substance is soluble in water. It is added into the water and dissolves. More solute continues being added until it reaches a

Sophie [7]

Answer:

option D

Explanation:

also to add.... there exists a solubility equilibrium between solid solute and the solution.

4 0

4 years ago

The starter motor of a car engine draws a current of 140 A from the battery. The copper wire to the motor is 4.20 mm in diameter

GenaCL600 [577]

Answer:

(a)106.4C

b)0.5676mm

Explanation:

(a)To get the charge that have passed through the starter then The current will be multiplied by the duration

I= current

t= time taken

Q= required charge

Q= I*t = 140*0.760 = 106.C

(b) b. How far does an electron travel along the wire while the starter motor is on?(mm)

diameter of the conductor is 4.20 mm

But Radius= diameter/2= 4.20/2=

The radius of the conductor is 2.1mm, then if we convert to metre for consistency same then

radius of the conductor is 0.0021m.

We can now calculate the area of the conductor which is

A = π*r^2

= π*(0.0021)^2 = 13.85*10^-6 m^2

We can proceed to calculate the current density below

J = 140/13.85*10^-6 = 10108303A/m

According to the listed reference:

Where e= 1.6*10^-19

n= 8.46*10^28

Vd = J/(n*e) = 10108303/ ( 8.46*10^28 * 1.6*10^-19 ) =0.0007468m/s=0 .7468 mm/s

Therefore , the distance traveled is:

x = v*t = 0.7468 * 0.760 = 0.5676mm

7 0

3 years ago

What is the main purpose of the organ system shown above?

jeka94

C provides support for the body

7 0

3 years ago

Read 2 more answers

When electrical is "used by a light bulb", what really happens to energy

Paha777 [63]

It gets converted from one form to other forms.

The great thing about the incandescent light bulb ... the original kind,
invented by Thomas Edison ... is that it can take electrical energy and
instantly turn it into light energy and heat energy. So you can use the
bulbs in your house to see at night without burning candles or oil, and
you can even use them in your chicken coop to keep the chickens warm.

I used one a few years ago when I found a tiny abandoned baby possum under the bush in my front yard. The poor thing was almost frozen. I put
it in a box with a few of my old T-shirts, and put an incandescent light bulb
under the box to keep it warm. In the morning, I took it to a wildlife rescue place on the lake-shore here in Chicago. They told me that the baby would
not have survived without the heat overnight. And three months later, they
sent me an email saying that my baby possum had grown big and strong,
and that they took him to the forest preserve and released him in the wild.

That was a rare occasion. We don't actually use light bulbs for heat too
much any more, so it's considered wasted energy in light bulbs. We have
better ways to generate heat now, and for light, we're changing to devices
that run cool and make a lot more light with the same amount of electrical
energy ... like fluorescent tubes, CFL curly bulbs, and LED bulbs. The
incandescent bulb is going away.

But the principal is still the same ... convert electrical energy into light energy.

8 0

3 years ago

Suppose you are driving a car around in a circle of radius 212 ft, at a velocity which has the constant magnitude of 43 ft/s. A

Elanso [62]

To solve this problem we will apply the concepts related to dynamic equilibrium. The vertical component of the tension is equivalent to the centripetal Force while the horizontal component of the tension is equivalent to the weight, therefore we will have the two equations,

$Tsin\alpha = \frac{mv^2}{r}$