Answer:
14.3kg
Explanation:
Given parameters:
Quantity of heat = 149000J
Change in temperature = 5.23°C
specific heat of the ice = 2000J/kg°C
Unknown:
Mass of the ice in the bag = ?
Solution:
The heat capacity of a substance is given as:
H = m c Ф
H is the heat capacity
m is the mass
c is the specific heat
Ф is the temperature change;
since m is the unknown, we make it the subject of the expression;
m = H/ mФ
m = = 14.3kg
The kinetic energy and potential energy are the two types of the mechanical energy. The generators are used to produce electricity, which is basically the electrical energy. Hence, the generators convert kinetic energy (mechanical energy) into the electrical energy which is supplied to our homes.
Hence, the correct answer is: Mechanical energy to the Electrical energy
Molten rock material wells up from the underlying mantle into the gap between the diverging plates and solidifies into oceanic crust, thereby creating new ocean floor. At the deep-sea trenches, two plates converge, with one plate sliding down under the other into the mantle where it is melted.:)
The process is called condensation , as molecules in a gaseous state lose energy and become liquid. Condensation commonly occurred when a vapor is cooled and/or compressed to its saturation limit when the molecular density in the gas phase reaches its maximal threshold.