Answer:
50 cubic cm
Explanation:
As the water displaces 50 cubic centimeters the amount of water that must leave the container for it to be able to be dropped into it is also 50 cubic as the water which was in its place must have gone somewhere.
Answer:
charge will be equal to
Explanation:
We have given mass of the particle m = 1.45 gram = 0.00145 kg
Acceleration due to gravity ![g=9.8m/sec^2](https://tex.z-dn.net/?f=g%3D9.8m%2Fsec%5E2)
Electric field E = 700 N/C
Electric force will be equal to
, here q is charge and E is electric field
For particle to be stationary this force must be equal to force due to gravity , that is mg force
So qE = mg
![q=\frac{mg}{E}=\frac{0.00145\times 9.8}{700}=2.03\times 10^{-5}C](https://tex.z-dn.net/?f=q%3D%5Cfrac%7Bmg%7D%7BE%7D%3D%5Cfrac%7B0.00145%5Ctimes%209.8%7D%7B700%7D%3D2.03%5Ctimes%2010%5E%7B-5%7DC)
So charge will be equal to
Explanation:
When a person is standing still, the forces acting on them (weight force pulling down and normal force pushing up) are equal and opposite, so the net force is balanced. So the person will continue to be at rest, unless the net force becomes unbalanced.
When a person falls with a parachute, the forces acting on them (weight force pulling down and air resistance pushing up) are equal and opposite, so the net force is balanced. So the person will continue to fall at the same speed until the net force becomes unbalanced.
For this case we have that by definition, the density of a body is given by:
ρ![= \frac {M} {V}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%20%7BM%7D%20%7BV%7D)
Where:
M: It is the mass of the body
V: It is the volume of the body
So the correct option is:
"mass divided by volume"
Answer:
mass divided by volume
ρ=![\frac {M} {V}](https://tex.z-dn.net/?f=%5Cfrac%20%7BM%7D%20%7BV%7D)
Answer: The correct explanation is 2.
Explanation: The warm air is less dense (it expands) and thus it is lighter than the cold air so it will rise up to the floor. Therefore, when you place the heater on the floor it will warm the cold air which would then rise and be replaced by more cold air which would again get warm and rise and so on until the room is heated. This means that the correct explanation is 2.
On the other hand, if you put the heater at the ceiling, it will warm the cold air near the ceiling which would stay up there (it is lighter than the cold air under it). This means that the only way for the heat to spread from this ceiling level warm air to the lower levels is via conduction which is slow.