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Damm [24]
3 years ago
6

A giant log float on a lake while a tiny grain of sand sinks to the bathroom. Explain why a heavy object like the log floats whi

le a very light grain of sand sinks?
Physics
2 answers:
Evgen [1.6K]3 years ago
8 0

Answer:

the heavy log can float on water coz it has a regular shape but the grain of sand sinks coz it has an irregular shape

ella [17]3 years ago
7 0

Answer:

Because the log is hollow or is less dense

Explanation:

If a log has little density, it will float. While sand is dense and completely solid, so it will sink.

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How does heat reach to us from the sun<br><br><br>​
patriot [66]

Answer:

heat reaches to us from the sun through radiation since there is no medium in space, radiation is the major wat heat travels in space.

6 0
4 years ago
The area of a piston of a force pump is 8 X 10⁴m². What force must be
prisoha [69]

Answer:

Force of 37.44 * 10^{8} Kgm/s^2 must be  applied to the piston to raise oil to a height of 6.0 m

Explanation:

As we know,

Pressure is the force per unit area

Or P = \frac{F}{A}

Force = P * A

Pressure is the product of density, gravitational constant and height

P = 780 * 10 * 6

Force

= P * A\\= 780 * 10*6*8*10^4\\= 37.44 * 10^{8}Kgm/s^2

5 0
3 years ago
A car goes from 0 to 100 km/hr in 10 seconds. What is its acceleration
makvit [3.9K]

Answer:

a= 2.7 m/s^2

Explanation:

acceleration: a

speed: V

Vf = final speed

Vi= initial speed (initial = beginning)

100 km/hour --> m/s

divide the speed value by 3.6

100/3.6= 27.8 m/s

a = \frac{final speed - initialspeed}{time}

a= \frac{Vf - Vi}{t} \\

a= \frac{27-0}{10}

a= \frac{27}{10}

a= 2.7 m/s^2

6 0
3 years ago
The IMA is always smaller than the AMA.<br><br> True<br> False
VMariaS [17]
Best answer must be false. Because the IMA it doesn't have always stay smaller than the AMA. Hope it helped you!
6 0
4 years ago
The Greek scientist who concluded that the sun is the center of the solar system, and that the Earth revolves around the Sun, wa
statuscvo [17]

Answer:

<em>a. Aristarchus</em> was the Greek scientist who concluded that the sun is the centre of the solar system, and that the Earth revolves around the Sun

Explanation:

<em>Aristarchus</em> was a Greek scientist who studied astronomy. He concluded that the sun is the centre of the solar system, and that the Earth revolves around the Sun (that it was Heliocentric).

6 0
4 years ago
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