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4 years ago

About how long does it take ocean water to travel around a gyre?

1 answer:

4 0

The Gulf Stream, for example, has an average speed of 4 mph, or 100 miles/day, or 3600 miles/year, in round numbers. A complete circuit around the Atlantic is 8 or 10 thousand miles, which would take around 3 years on a raft.

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You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the rea

KonstantinChe [14]

Answer : The half-life of this substance will be, 45 minutes.

Explanation :

First we have to calculate the value of rate constant.

Expression for rate law for first order kinetics is given by:

$k=\frac{2.303}{t}\log\frac{a}{a-x}$

where,

k = rate constant = ?

t = time passed by the sample = 90.3 min

a = initial amount of the reactant = 400

a - x = amount left after decay process = 100

Now put all the given values in above equation, we get

$k=\frac{2.303}{90.3min}\log\frac{400}{100}$

$k=1.54\times 10^{-2}\text{ min}^{-1}$

Now we have to calculate the half-life of substance, we use the formula :

$k=\frac{0.693}{t_{1/2}}$

$1.54\times 10^{-2}\text{ min}^{-1}=\frac{0.693}{t_{1/2}}$

$t_{1/2}=45min$

Therefore, the half-life of this substance will be, 45 minutes.

4 0

3 years ago

Is the visible light color spectrum a small segment of the electromagnetic spectrum?

VMariaS [17]

Answer:

Yes

Explanation:

The visible light color spectrum only makes up a small segment of the EM spectrum

7 0

3 years ago

A jet engine pushes air at high velocity toward the rear of the plane. Thrust is created moving the plane forward. Which stateme

Lapatulllka [165]

The air pushes the engine with an equal force in the opposite direction.
Whenever force is used there is an opposite yet equal affect.

5 0

3 years ago

If an element has 7 electrons how many of them will be in the 2nd energy level

inna [77]

Well first you can not go to the 2nd energy level without the first so the first takes up 2 electrons leaving you 5 electrons and the recommended amount is 8 electrons so you would have 5 electrons left

8 0

4 years ago

Read 2 more answers

Error found in a variable inertia bar experiment bar

Reil [10]

Answer: ok so u have to add the variable interia by the experiment bar to get ur total

Explanation:

6 0

3 years ago

Read 2 more answers