9.46 Air enters the compressor of an ideal cold air-standard Brayton cycle at 100 kPa, 300 K, with a mass flow rate of 6 kg/s. T
1 answer:
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Answer:
5.5g of ice melts when a 50g chunk of iron at 80°C is dropped into a cavity
Explanation:
The concept to solve this problem is given by Energy Transferred, the equation is given by,
Where,
Q= Energy transferred
m = mass of water
c = specific heat capacity
Temperature change (K or °C)
Replacing the values where mass is 50g and temperature is 80°C to 0°C we have,
Then we can calculate the heat absorbed by m grams of ice at 0°C, then
How Q_1=Q_2, so
Then 5.5g of ice melts when a 50g chunk of iron at 80°C is dropped into a cavity
Answer:
(A) The spring constant is <u>98 N/m.</u>
(B) The period of oscillation is <u>0.635 s.</u>
Explanation:
Given:
Mass of the body is,
Extension length of the spring is,
Now, let 'k' be the spring constant.
The force acting on the body is due to gravity only and is equal to its weight.
So, weight of the body is given as:
Now, we know that for a spring-mass system, the net force acting on the body is equal to the product of the spring constant and extension length. Therefore,
Hence, the spring constant is 98 N/m.
(B)
Period of oscillation of a body of spring-mass system in SHM is given as:
Plug in the given values and solve for period 'T'. This gives,
Therefore, the period of oscillation is 0.635 s.