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hodyreva [135]
2 years ago
11

how many kilograms off mercury would fill a 5litre container if the density of mercury is 13.6grams per cm3

Physics
1 answer:
Sidana [21]2 years ago
7 0

Answer:

68kg

Explanation:

1 cm^3 is the same as 1 mL and there are 5000mL in 5L

Therefore if the density is 13.6g/mL we multiply 13.6 by 5000 to get the amount of grams required = 68000g which is 68kg

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How does the mass of an object affect the outcome when an unbalanced force acts on it?
Verdich [7]

Answer:

The magnitude of acceleration is reduced.

Explanation:

Force is defined as push or pull

The force is said to be<em> balance force  </em>if the force are equal in size but opposite in direction. ie the object does not move or move with constant speed.

The force are to be<em> unbalanced force </em>if the force cause change in motion. ie the object has force greater than zero and has acceleration.

According to <em>Newton second law of motion </em>, acceleration depends on force acting on the object and mass of object.

     F=ma

     a=\frac{F}{m}

When unbalanced force act on the mass of object it reduces magnitude of acceleration without changing the direction.

6 0
3 years ago
A car travels at a speed of 40 m/s for 29.0 s;<br>what is the distance traveled by the car?
lianna [129]

Answer: 1160 m

Explanation:

Speed = distance / time. Plug in 40 m/s for speed and 29 s for time in order to get the distance, 1160 m.

8 0
2 years ago
What is the difference between transverse and longitudinal waves?
nataly862011 [7]
<span> Displacement of the medium perpendicular  to the direction of propagation of the wave. that would be your answer</span>
8 0
3 years ago
Read 2 more answers
PLZ HELP
Nadya [2.5K]

1) The mass of the continent is 3.3\cdot 10^{21}kg

2) The kinetic energy of the continent is 1683 J

3) The speed of the jogger must be 6.57 m/s

Explanation:

1)

The continent can be represented as a slab of size

d=5850 km = 5.85\cdot 10^6 m

and depth

t = 35 km = 3.5\cdot 10^4 m

So its volume is

V=d^2 t = (5.85\cdot 10^6)^2(3.5\cdot 10^4)=1.20\cdot 10^{18} m^3

We also know that the density of the continent is

\rho = 2750 kg/m^3

Therefore, we can calculate its mass as:

m=\rho V=(2750)(1.20\cdot 10^{18})=3.3\cdot 10^{21} kg

2)

The kinetic energy of the continent is given by

K=\frac{1}{2}mv^2

where

m is its mass

v is its speed

We have already calculate its mass, while the speed is

v = 3.2 cm/year

We have to convert into SI units first, as follows:

v=3.2 \frac{cm}{year} \cdot \frac{1}{100 cm/m} \cdot \frac{1}{(365 d/y)(24h/d)(60min/h)(60 s/min)}=1.01\cdot 10^{-9} m/s

The mass is

m=3.3\cdot 10^{21} kg

So, the kinetic energy of the continent is

K=\frac{1}{2}(3.3\cdot 10^{21})(1.01\cdot 10^{-9})^2=1683 J

3)

Here we have a jogger having the same kinetic energy of the continent, so

K=1683 J

And the kinetic energy of the jogger can be expressed as

K=\frac{1}{2}mv^2

where

m = 78 kg is the mass of the jogger

v is his speed

We can therefore re-arrange the equation to find the speed of the man, and we get:

v=\sqrt{\frac{2K}{m}}=\sqrt{\frac{2(1683)}{78}}=6.57 m/s

Learn more about kinetic energy:

brainly.com/question/6536722

#LearnwithBrainly

8 0
2 years ago
Henry was given this cool toy for his birthday, he can use it to tell how fast someone is moving at that moment in time. The toy
Jobisdone [24]
Speed, the toy can calculate a persons speed
6 0
3 years ago
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