Answer:
(a) more than
Explanation:
Conduction:
Transfer of heat due to direct contact between two mediums at different temperatures, without having any of the bodies traveling. Therefore, conduction heat transfer occurs by the transfer of momentum (molecular) from always the same group of molecules in one medium to another group of molecules in another medium.
Example: Heat transfer INSIDE a solid.
Convention:
Transfer of heat or mass due to at least one traveling medium, where the transfer of momentum is not bounded anymore to the same groups of molecules. Molecules moving to transfer their momentum and keep flowing to the next group, also allowing other molecules behind to do the same. Example: heat transfer by the wind.
Hence, the Mass transfer rate in convection is <u>more than</u> mass transfer in conduction
Electrical resistance is measured by units of ohms.
Answer:
56.44 %
Explanation:
The formula of copper(II) sulfate pentahydrate is 
.
In order to calculate the mass percentage of water in it, we may assume that we have 1 mol of copper(II) sulfate pentahydrate. In general, the mass percentage is a ratio between the mass of a component and the total mass of the compound expressed in percent:
Since we're taking 1 mole of a substance here, we may state that the mass percentage of water will be calculating using molar masses instead:
Notice that we take 5 molar masses of water, as 1 mole of copper(II) sulfate pentahydrate contains 5 moles of water molecules, then:
n = number of peaks passed a particular point = 5
t = time taken by the peaks to pass a particular point = 1 sec
f = frequency of the wave
by definition , frequency is the repetition of an event in a given interval of time.
we know that frequency is given as
f = n/t
inserting the values
f = 5/1
f = 5 Hz
hence the frequency of the wave comes out to be 5 Hz
