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4 years ago

Explain why most metals sink in water

2 answers:

6 0

Answer: The reason why most metal sink is because the is water is pushing the metal down to the ground and which can not be lifted up but the lighter the objects float back to the surface.

Explanation:

Makovka662 [10]4 years ago

6 0

Mass is the answer
The bigger the mass the heavier it is
This applies to all objects
So this answer is a more simplified version

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A boat radioed a distress call to a Coast Guard station. At the time of the call, a vector A from the station to the boat had a

VashaNatasha [74]

Answer:

d = 39.7 km

Explanation:

initial position of the boat is 45 km away at an angle of 15 degree East of North

so we will have

$r_1 = 45 sin15 \hat i + 45 cos15 \hat j$

$r_1 = 11.64 \hat i + 43.46\hat j$

after some time the final position of the boat is found at 30 km at 15 Degree North of East

so we have

$r_2 = 30 cos15\hat i + 30 sin15 \hat j$

$r_2 = 28.98\hat i + 7.76 \hat j$

now the displacement of the boat is given as

$d = r_2 - r_1$

$d = (28.98\hat i + 7.76 \hat j) - (11.64 \hat i + 43.46\hat j)$

$d = 17.34 \hat i - 35.7 \hat j$

so the magnitude is given as

$d = \sqrt{17.34^2 + 35.7^2}$

$d = 39.7 km$

4 0

3 years ago

True or false: the energy that is related to moving parts is called electrical energy

NemiM [27]

False, that would be kinetic energy.

3 0

3 years ago

A homeowner installs an electrical heated mirror into the shower room. When a person has a shower, the heated mirror does not go

galina1969 [7]

This is most likely because a heated mirror will evaporate any water condensation from the shower that tries to accumulate onto it.

6 0

3 years ago

Read 2 more answers

The weight of a girl on the Earth is 340 N, what is her mass on Earth?(g= 10Nkg-1)

kirill [66]

Answer:

34 kg is the answer to the question

4 0

3 years ago

If the western component of the wind is half of the south, what is the angle of the wind with the south?

den301095 [7]

Answer:

This above a triangle that models our situation.

Explanation:

We have a two componens., since we have a western componet and southern component. One travel in a southern direction. and the other travel in the west.

Let the component that travel in the south be the length of a.

According to the problem, the westard component is half of that so let that length be a/2.

Now we must find the angle of the wind in the South.

This means that what is angle that is opposite of the western componet because that angle is the most southward angle. So know we apply the tan property.

$\tan(x) = \frac{opp}{adj}$

Our side opposite of the angle we trying to find is the western component and the side adjacent to it is the southern component. Also remeber since western and Southern negative displacements, we have

$\tan(x) = \frac{ - \frac{a}{2} }{ - a}$

$\tan(x) = - \frac{a}{2} \times - \frac{1}{a} = \frac{1}{2}$

Now we take the arctan or inverse tan of 1/2.

$\tan {}^{ - 1} ( \frac{1}{2} ) = 26.57$

3 0

2 years ago

Read 2 more answers