Multiple point of origin & pour pattern
Answer:
The correct option is;
(c) 64W
Explanation:
Here we have the Coefficient Of Performance, COP given by

The heat change from 23° to 6°C for a mass of 10 kg/h which is equivalent to 10/(60×60) kg/s or 2.78 g/s we have
= m·c·ΔT = 2.78 × 4.18 × (23 - 6) = 197.39 J
Therefore, plugging in the value for
in the COP equation we get;
which gives

Since we were working with mass flow rate then the power input is the same as the work done per second and the power input to the refrigerator = 63.674 J/s ≈ 64 W.
The power input to the refrigerator is approximately 64 W.
Answer:
Use some Glue.. . . Aluminium is not magnetic, so your magnet can't sticl to aluminium without using Glue. You cannot get a magnet to stick to aluminum, no matter how hard you try. Aluminum is diamagnetic, which means it repels a magnetic field.
Explanation:
Hope It Help
brainliest please
B.
how electric charges can be used to create a magnetic field
(how I know, just took it, the test I mean)
Answer:
(A) Kinetic energy will be 577.7 j
(b) Factor by which kinetic energy will change is 4
Explanation:
We have given mass of the athlete m = 65.5 kg
He has a speed of 4.20 m/sec
So v = 4.20 m/sec
(a) Kinetic energy is given by 
(B) Now he wishes to doubles his speed So now speed = 4.20×2 = 8.40 m/sec
Now kinetic energy is 
So the factor by which kinetic energy will change