Answer:
618.03 J
Explanation:
Potential energy can be calculate using the following formula.
PE=m*g*h
where m is the mass, g is the acceleration due to gravity and h is the height.
In this situation, we have a 3 kilogram rock on a 21 meter high cliff. Therefore, the mass is 3 kg and the height is 21 m.
On Earth, the acceleration due to gravity is 9.81 m/s^2.
m=3 kg
h=21 m
g=9.81 m/s^2
Substitute these values into the formula.
PE=3*9.81*21
Multiply all the numbers together
PE=63*9.81
PE=618.03
The potential energy is 618.03 kg m^2/s^2, or 618.03 Joules
Answer:
The dryer evaporate 200 - 24.74 kg of water per hour
To remove 1kg of water it need 3000 K J
So to remove, 175.26 Kg
it need 5.257x
KJ of heat per hour.
Explanation:
In one hour, the amount of sugar entering = 1000 kg
w.b moisture content is defined as,
weight of water / weight of water + weight of dry
/
+
x 100
+
= 1000 kg when entering
it has 20% moisture content when entering
= 0.2 x 1000 = 200 kg
when leaving it has 3% moisture content then weight of dry material
= 1000 - 200 = 800 Kg
= 0.03
= 0.03
= 0.03 x
+ 0.03 x 800
= 24.74 kg
When leaving the dryer, the crystals has total weight of the water = 24.74 kg per hour.
The dryer evaporate 200 - 24.74 kg of water per hour
To remove 1kg of water it need 3000 K J
So to remove, 175.26 Kg
it need 5.257x
KJ of heat per hour.
Answer:
Explanation: The end of the magnet that points towards the south is called the north-seeking end or the south pole of the magnet.
Answer:
A=0.80
Explanation:
a=2×100/time^2. a=2×100/15.86^2. = a=0.80