Answer:
Explanation:
The heat required to change the temperature of steam from 125.5 °C to 100 °C is:
The heat required to change the steam at 100°C to water at 100°C is;
The heat required to change the temperature from 100°C to 0°C is
The heat required to change the water at 0°C to ice at 0°C is:
The heat required to change the temperature of ice from 0°Cto -19.5°C is:
The total heat required to change the steam into ice is:
b)
The time taken to convert steam from 125 °C to 100°C is:
The time taken to convert steam at 100°C to water at 100°C is:
The time taken to convert water to 100° C to 0° C is:
The time taken to convert water at 0° to ice at 0° C is :
The time taken to convert ice from 0° C to -19.5° C is:
Answer:
Option B
Explanation:
The electrons flow from negative terminal of a battery to the positive terminal because as the charge of electron is negative, it will get repelled by the negative terminal of the battery
Conventional flow actually assumes that the current flows out of the positive terminal, through the circuit and into the negative terminal of the battery
It actually says that direction of flow of current is in opposite direction to the direction of flow of electrons
The direction of current will not change even a resistor is placed in the circuit and it generates a potential difference across the resistor
But the current tries to move in such a way in which there will be less resistance to the flow
Answer:
The second one
Explanation:
The second one is joining so it is the one which belongs to X, first one belongs to Z
Answer: 2.4×10^-3 v/m
Explanation: distance between plates of capacitor (d) =5.0×10^-3m
Potential difference between plates (v) = 12v
Force on electronic charge (f) = 3.8×10^-16 N
Strength of electric field (E) =?
The formulae that relates potential difference, eoectiic field strength and distance between plates is given as
v = Ed
By substituting the parameters, we have that
12 = E × 5.0×10^-3
E = 12/ 5.0 × 10^-3
E = 2.4×10^-3 v/m
His weight depends on where he is, because
Weight = (mass) x (gravity in the place where the mass is) .
For example:
-- If this man is on Mars, his weight is (110 kg) x (3.7 m/s²) = 408 Newtons
-- If he is on the Moon, his weight is (110 kg) x (1.6 m/s²) = 176 Newtons
-- If he is on Earth, his weight is (110 kg) x (9.8 m/s²) = 1,078 Newtons
-- If he is in a spacecraft coasting from one to another, his weight is zero.
