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3 years ago

Why are more serial killers found in develop nation than somewhere else?

1 answer:

4 0

If your talking about the US it’s because we have much more open records than other countries. If the US has higher murder rates then other countries then best believe that we have more serial killers too.

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A flask containing argon gas is connected to an closed-ended mercury manometer. The closed end is under vacuum. If the mercury l

iogann1982 [59]

Answer:

230 torr

Explanation:

Given that

P = 230 mm of Hg

If argon gas and mercury is in equilibrium position then the pressure on the both side will be same .

As we know that

1 torr = 1 mm of Hg

So the pressure of the argon will be 230 torr .

Unit conversion

1 torr = 1 mm of Hg

1 bar = 100 KPa = 10⁵ Pa = 10⁵ N/m² = 0.1 MPa = 0.1 x 10⁶ Pa

5 0

3 years ago

The half-life of uranium-235 is 713 million years. Suppose a rock originally had 26 grams of uranium-235. A geologist had the ro

BlackZzzverrR [31]

Answer:

<h3>2139 Million years</h3>

Explanation:

Half life of a material is the time required for the material to decay into half of initial amount.

initially there is 26 grams of uranium-235, and the final amount is 3.25 gram

ratio between initial and final amount = $\frac{26}{3.25} = \frac{1}{8}$

now it is clear that the material have halved 3 times from initial condition

number of half lives passed = 3

number of half lives passed can also be found using the equation

no of half lives = $log_{2} \frac{R_{0} }{R}$

where $R_{0}$ is the initial amount of material and R is the final amount

∵ Number of half lives = $log_{2} \frac{26 }{3.25}$

= 3

So, age of rock = half-life X number of half-lives passed

=713000000 X 3

= 2139000000

=2139 Million Years

7 0

3 years ago

What are the key differences between stored and conservation of energy?

Irina18 [472]

Stored energy=energy that is stored and may not be used, conservation of energy= saved energy that you can use for other things.

7 0

3 years ago

If a lion covers 110 meters in 5 seconds, at what speed is the lion running?

dolphi86 [110]

V = $\frac{D}{t}$

= $\frac{110}{5}$
= 22 m/s

5 0

4 years ago

A 5.00 l tank contains helium gas at 1.50 atm. what is the pressure of the gas in mmhg?

Mama L [17]

To calculate for the pressure of gas in mm Hg, we simply need to use a conversion factor.

We know that 1 atm is equal to 760 mm Hg therefore:

P = 1.50 atm * (760 mm Hg / 1 atm)

P = 1,140 mm Hg

<span>Answer: D</span>

6 0

3 years ago