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Dafna1 [17]
3 years ago
11

The following graph shows the rates of decay for four parent isotopes. Based on the graph, which parent isotope most likely has

a half-life of 13 billion years?
A

B

C

D

Physics
2 answers:
iren [92.7K]3 years ago
5 0

Just look at the graph, and find a curve that has fallen to
half of its original value 95 = 47.5 in 13 B years.

Do I really hafta tell you which one it is ?

















It's curve ' C ' .
timurjin [86]3 years ago
4 0

The answer is A.                                                            






















































































































jfjffj                                      

             


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Temka [501]

Answer:3,600 Newtons

Explanation:

The net force acting on the car is

3×10^3squared

Newtons.

Force is defined as the product of the mass of the body and its aaceleration,⇒F=ma

Substituting the above given values we get,F=(1500kg) (2.0m /s^2 squared)=3000 N=3×10^3 squared N.

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7 0
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alexgriva [62]

Answer:

8

Explanation:

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A dog is walking at 2m/s and then begins to run at a speed of 6m/s. What is his acceleration if his total travel time is 2 secon
fiasKO [112]
The formula for velocity vf = vi + at

First list your given information

2m/s Is your initial velocity (vi)
6m/s is you final velocity (vf)
2 seconds is your time (t)

Since you want the a for acceleration get a by itself

a = (vf-vi)/t

So a= (6-2)/2

a= 4/2

a=2

Now units

the units for acceleration are m/sx^{2}

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7 0
3 years ago
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Cerrena [4.2K]

Answer: the expanding universe

Explanation:

Hope that helps!

7 0
3 years ago
Two sounds are played for you. The first has a frequency of 196 Hz. The second has a frequency of 392 Hz. Which sound will be "h
kykrilka [37]

Answer:

The second one, the higher the hertz the higher the frequency we hear

Explanation:

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