Radiation transfers heat by electromagnetic waves
Answer:
F=50kg
D=5m
W=FD
therefore work done is 250Nm
Answer:
O'B. Good conductor of heat.
Explanation:
Plastic is not a good conductor of heat because it has no delocalized electrons it's surface to transfer heart.
Given Data: Diameter 'd' = 30 cm = 0.3 m Lifting Weight 'W' = mg = 2000*9.81 N = 19,620 N Calculations: Area of the lift 'A' = <span>pi\over4*d^2=pi\over4*0.3^2=0.07 m^2
Thank you for posting your question here at brainly. I hope the answer helps. </span>