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Svetllana [295]
2 years ago
12

Can someone please answer this, ill give you brainliest Would be very appreciated.

Physics
1 answer:
Whitepunk [10]2 years ago
6 0

Answer:

frost wedging

Explanation:

When glaciers melt and the rock beneath is weathered and broken down, this is called frost wedging.

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Tungsten, W-181, is a radioactive isotope with a half life of 121 days. If a medical lab purchases 24 kg of W-181, how much will
luda_lava [24]

1 year = (365 / 121) = 3.02 half-lifes.  Let's call it 3 .

The amount of radioactive isotope remaining after 3 half-lifes is

(1/2) x (1/2) x (1/2) = 1/8 

A year after the medical lab received the 24 kg of W-181, 
there will still be 24 kg of stuff in the container. 
But only 3 kg of it will still be W-181.  The other 21 kg will be
whatever substances W-181 becomes when it decays.

Sadly, even the 3 kg of good stuff won't be usable anymore ...
it'll be thoroughly mixed with the 21 kg of junk.  It would be harder
and more expensive to try and separate them than to buy a new
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8 0
3 years ago
Read 2 more answers
Pls helpp!! Write a fictional story that takes place in a world without gravity.
kirza4 [7]

Answer: Once upon a time there was a world without gravity. Billy Bob was sitting at home and his dad went to get some milk. But when he stepped out he floated away. Billy Bob never saw his dad again. The end.

Explanation:

6 0
3 years ago
On Earth, a scale shows that you weigh 490 N. What is your mass?
vesna_86 [32]
A 50 kg

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5 0
2 years ago
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A conducting loop in the form of a circle is placed perpendicular to a magnetic field of 0. 50 t. If the area of the loop decrea
Kisachek [45]

The induced emf in the loop is  -1500 μ V or  - 0.0015 V  .

According to the question

A conducting loop in the form of a circle is placed perpendicular to a magnetic field of 0. 50 t.  

i.e

Magnetic field (B) = 0. 50 T

Area of circle or loop = \pi r^{2}  

Now,

The area of the loop decreases at a rate of 3. 0 × 10⁻³ m/s

i.e

dA = 3. 0 × 10⁻³ meter²

dt = 1 sec  

As per the formula of Induced e.m.f in the loop

emf is dependent on number of turns of coil, shape of the coil, strength of magnet and speed with which magnet is moved. Emf is independent of resistivity of wire of the coil.

e=-B*\frac{dA}{dt}

where A is the area of the loop.

Now ,

Substituting the values in the formula

e=-B*\frac{dA}{dt}

e= - 0.50 *\frac{ 3 * 10^{-3}}{1}    

e = - 0.0015 V

OR

e = -1500 * 10⁻⁶ V

e =  -1500 μ V

Negative just signifies emf will such be induced that current induced will oppose change in magnetic field though it

To know more about induced emf here:

brainly.com/question/16764848

#SPJ4

5 0
2 years ago
Which of the following is NOT a vector quantity?
lora16 [44]

Answer:

D

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Acceleration has both magnitude and direction. because velocity is vector quantity

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potential energy= mgh

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5 0
2 years ago
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