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GenaCL600 [577]
3 years ago
9

What is the density of a rock with a mass of 10 grams and a volume of 5 ml

Physics
1 answer:
Talja [164]3 years ago
3 0
Density= mass/volume
So the answer is 2g/ml
Hope this helps!
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Suppose two equal charges of 0.65 C each are separated by a distance of 2.5 km in air. What is the magnitude of the force acting
mafiozo [28]

Answer:

Force between two equal charges will be 608.4 N

Explanation:

We have given charges q_1=0.65C\ and\ q_2=0.65C

Distance between the charges = 2.5 km = 2500 m

According to coulombs law force between two charges is given by

F=\frac{1}{4\pi \varepsilon _0}\frac{q_1q_2}{r^2}=\frac{Kq_1q_2}{r^2}, here K is constant which value is 9\times 10^9Nm^2/C^2

So force F=\frac{9\times 10^9\times 0.65\times 0.65}{2500^2}=608.4N

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3 years ago
Four seismometers stations are the minimum needed to calculate the epicenter of an earthquake.
Marina CMI [18]

"Four seismometer stations are the minimum needed to calculate the epicenter of an earthquake".

Answer: The above statement is False.

<u>Explanation:</u>

  • Seismographs are devices used to measure the movement of earth and it uses a motion sensor named seismometers that are connected with a recording devices.
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  • Three seismometers are used to locate the center point of the earthquake region.  
  • Seismograph displays the damage caused by the earthquake in a graphical data based on the readings observed in the seismometer.
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What are two thing the atmidspere do for us?
Svetach [21]
Keeps everything in balance and keep's the oxygen in place here on earth 
3 0
3 years ago
4cm cubed = ?m cubed
Neporo4naja [7]

Answer:

{ \rm{1 \:  {cm}^{3} =  \frac{1}{100 {}^{3} }  \:  {m}^{3}  }} \\  \\  { \rm{4 \:  {cm}^{3}  =  \frac{4}{1000000}  \:  {m}^{3} }} \\  \\ { \boxed{ \rm{ = 0.000004 \:  {m}^{3} }}}

5 0
2 years ago
A very large magnet applies a repulsive force to a smaller (0.05 Kg) magnet. If the smaller magnet accelerates across a friction
makkiz [27]

Answer:

0.1 N

Explanation:

using F = ma yields 0.1 N.

net

5 0
3 years ago
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