2075 Set A Q.No. 106 A Carnot engine has 40% efficiency with a sink at 10°C. By how many degrees should the temperature of the s
2 answers:
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Initially, the magnetic field intensity is B=5.0 mT=0.005 T, so the magnetic flux throug the wire loop is
Initially, the magnetic field intensity is B=5.0 mT=0.005 T, so the magnetic flux throug the wire loop is
Answer:
the time it will take the element to decay to 1.9 g is 34.8 mins.
Explanation:
Given;
half life of Nitrogen, t = 10 min
initial mass of the element, N₀ = 20 g
final mass of the element, N = 1.9 g
The time taken for the element to decay to final mass is calculated as follows;
time (min) mass remaining
0 ----------------------------------20 g
10 mins ------------------------- 10 g
20 mins ------------------------- 5 g
30 mins -------------------------- 2.5 g
40 mins --------------------------- 1.25 g
Interpolate between 2.5 g and 1.25 to obtain the time for 1.9 g
30 min ------------------------- 2.5 g
x ----------------------------------- 1.9 g
40 min -------------------------- 1.25 g
Therefore, the time it will take the element to decay to 1.9 g is 34.8 mins.
Answer:
And solving for F we got:
And replacing we got:
And if we want the mass we can solve from this formula:
With g=9.8 m/s^2 the gravity
Explanation:
For this case we can find the total area of the 4 tires and we got:
Now we know that the total pressure is:
And then we can find the weight with from this formula:
And solving for F we got:
And replacing we got:
And if we want the mass we can solve from this formula:
With g=9.8 m/s^2 the gravity