Answer:
Ro = 7.8 [g/cm³]
Explanation:
According to the principle of Archimedes, the volume of a body immersed in a liquid is equal to the volume displaced by water. That is, in this problem The displacement volume is equal to the new volume minus the original volume.
We now know that density is defined as the relationship between mass and volume.
where:
Ro = density [g/cm³]
m = mass = 78 [g]
Vd = displacement volume [cm³]
Because your brain cant handle all of the information.
Answer:
Part a)
Part b)
Since the radius is decreasing so induced current will increase the flux through the coil
So it would be clockwise in direction
Explanation:
As we know that magnetic flux linked with the coil is given as
now the rate of change in flux is given as
now we know that circumference is decreasing at rate of 15 cm/s
so here we know the length of circumference as
So rate of change in circumference is
final length of circumference at t = 8 s
Part a)
Now the induced EMF is given as
Part b)
Since the radius is decreasing so induced current will increase the flux through the coil
So it would be clockwise in direction
Is earth’s freshwater
Only about 3 percent of Earth’s water is fresh water.
It has increased. More kinetic energy increases the opposing force.