In electronics, rectification is the conversion of alternating current (AC) to direct current (DC). This process can be performed by a diode which is an electrical entity that allows current to flow in one direction but not in the reverse direction. An application of rectification is the research-based development of higher frequency rectifiers under terahertz and light frequencies.
OD. A swing moving back and forth
Kinetic energy refers to the energy an object has while it is in motion. The swing is the only moving option.
Answer: 16700 Joules
Explanation:
The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.
![Q=m\times c\times \Delta T](https://tex.z-dn.net/?f=Q%3Dm%5Ctimes%20c%5Ctimes%20%5CDelta%20T)
Q = Heat absorbed = ?
m = mass of sand = 2 kg
c = heat capacity = ![835J/kg^0C](https://tex.z-dn.net/?f=835J%2Fkg%5E0C)
Initial temperature =
= ![40^0C](https://tex.z-dn.net/?f=40%5E0C)
Final temperature=
= ![50^0C](https://tex.z-dn.net/?f=50%5E0C)
Change in temperature ,![\Delta T=T_f-T_i=(50-40)^0C=10^0C](https://tex.z-dn.net/?f=%5CDelta%20T%3DT_f-T_i%3D%2850-40%29%5E0C%3D10%5E0C)
Putting in the values, we get:
![Q=2kg\times 835J/kg^0C\times 10^0C](https://tex.z-dn.net/?f=Q%3D2kg%5Ctimes%20835J%2Fkg%5E0C%5Ctimes%2010%5E0C)
![Q=16700J](https://tex.z-dn.net/?f=Q%3D16700J)
16700 J of energy must be added to a 2-kilogram pile of it to increase its temperature from 40°C to 50°C