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3 years ago

A certain material has a mass of 565 g while occupying 50 cm3 of space. What is this material?

Physics

1 answer:

EastWind [94]3 years ago

8 0

<u>Answer:</u>

Lead

<u>Explanation:</u>

To get the density of the material, the formula would be:

mass divided by volume which is given by $d = \frac { m } { v }$ .

Here in this problem, we are given a mass of $565 g$ which occupies a volume of $50 cm^3$ .

So plugging the data in the above formula to find the density:

Density = $\frac { 565 } { 50 } = 11.3$

From the table, we can see that the material is Lead which has a density of 11.3c/cm^3.

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John and Caroline go out for a walk one day. This graph represents their distance from home.

vivado [14]

Answer:

C) They walked in one direction, then they were still, then they walked in the opposite direction.

Explanation:

John and Caroline go out for a walk one day. This graph represents their distance from home.c According to the graph they walked with almost same in both the direction.

First they walked in one direction and travel 30 meter in same direction then they were still for some time. Then they walked in the opposite direction for 30 meter. They walked in both the direction with approximately equal speed.

Thus, Option C is correct.

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3 years ago

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A hockey puck is set in motion across a frozen pond. If ice friction and air resistance are neglected, the force required to kee

Gekata [30.6K]

Answer:

Zero

Explanation:

According to Newton's second law, the net force acting on an object is equal to the product between the object's mass and its acceleration:

F = ma

For the hockey puck, there are no forces acting on it during its motion, since ice friction and air resistance are negligible. This means that the net force is zero:

F = 0

But this means that the acceleration is also zero:

a = 0

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3 years ago

Two engines do same work in different time intervals.Which will have more power?

Angelina_Jolie [31]

Answer:

who done work in less time will have more power

Explanation:

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3 years ago

Which chemical equation is unbalanced?

Mashcka [7]

Answer:

b would be the correct answer here

Explanation:

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The diagram shows the path taken by a lost sheep. His owner, Jamil, found him at the end of the path. What was the sheep's displ

vovikov84 [41]

Answer:

The displacement of Jamil's sheep $=5\ km$

Explanation:

Displacement is the shortest journey.

It is also the shortest distance from initial position to final position of an object.

Lets say that the distances covered by the sheep in east $10\ km =AO$ .

The distance covered in south is $= 5\ km=OB$

The distance covered in west is $= 10\ km = BK$

But if we look upon the diagram it goes in a rectangular shape where $AO=BK$ we can say that $AK$ is the shortest distance to reach point $K$ which is the final destination of the sheep,and $BO=AK$ .

So displacement $AK = 5\ km$

The displacement of the sheep $= 5\ km$

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3 years ago