Answer:
The movement of continents changes wind patterns and ocean currents.
hope this helps!
Explanation:
The force between two parallel wires carrying currents in the same direction is attractive. It is repulsive if the currents are in opposite directions.
Answer: 0.258 N
Explanation:
As the density of the object is much less than the density of water, it’s clear that the buoyant force, is greater than the weight of the object, which means that in normal conditions, it would float in water.
So, in order to get the ball submerged in water, we need to add a downward force, that add to the weight, in order to compensate the buoyant force, as follows:
F = Fb – Fg
Fb= δH20* 4/3*π*(d/2)³ * g
Fg = δb* 4/3*π*(d/2)³ *g
F= (δH20- δb) * 4/3*π*(d/2)³*g
Replacing by the values of the densities, and the ball diameter, we finally get:
F= 0.258 N
Answer:
• The amount of heat required to melt ice and raise the temperature of water T^oCToC is
Q=mL_f+mc\Delta TQ=mLf+mcΔT
Here m=1.5 kgm=1.5kg
L_f=3.33*10^5 J/kgLf=3.33∗105J/kg is Latent heat of fusion of ice.
c=4186 J/kg.^oCc=4186J/kg.oC is heat capacity of water.
\Delta T=50 ^oC-0^oC=50^oCΔT=50oC−0oC=50oC
So,
Q=(1.50)[3.33*10^5 +(4186)(50)]=8.13*10^5 JQ=(1.50)[3.33∗105+(4186)(50)]=8.13∗105J
