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Akimi4 [234]
3 years ago
7

Which information can be determined using half-life?

Physics
1 answer:
Firlakuza [10]3 years ago
4 0

In,radioactive decay,the half-life is the length of time after which there is a 50 percent chance that an atom will have undergone nuclear decay.It varies depending on the atom type and isotope,and is usually determined experimentally.

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Calculate the mass of an object with a density of 102.5 g/mL and volume of 375 mL.
AveGali [126]

Answer:

38,437.5

Explanation:

Density(d)= 102.5g/ml

Volume (v)=375ml

Mass(m) = ?

D =m/v

102.5= m/375

102.5*375=m

38,437.5=m

therefore Mass = 38,437.5g/ml.

6 0
4 years ago
A car travels at a speed of 55 km/hr and slows down to 10 km/hr in 20 seconds. What is the acceleration?
WITCHER [35]

Answer:

b

Explanation:

3 0
3 years ago
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If the frequency of wave is 400 Hz and its
agasfer [191]

Answer:

D) 1000 m/s

Explanation:

wavelength = \frac{velocity}{frequency}

You have the wavelength and frequency, you just need to solve for velocity. You can do this by multiplying each side of the equation by frequency.

Hope this helps.

8 0
4 years ago
a canoe is floating down a river with a velocity of 35 meters per minute when it suddenly approaches a waterfall. if the waterfa
vampirchik [111]
From Newton's law v^2 = u^2 + 2as where a is the acceleration and s is the distance.  
But to go any further, we need to know how fast the vehicle is accelerating 
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 So in one minute acceleration = (35 / 60) / 60 = 0.0097 ms/2. The first
experession in bracket is the initial velocity, u, in metres per seconds. 
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 v^2 = 0.3398 + 0.5826 = 0.9224
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3 0
3 years ago
How do we know the light inside the fridge turns off if we never see it turn off?
mariarad [96]

Answer:

They are automated to turn off when you shut the door but if you leave it open barely enough or climb into the fridge yourself you can see that it turns off.

Explanation:

6 0
3 years ago
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