Some are fuel,chemicals,plastics,asphalt,and road oil.
The reason is because the molecules didnt come togeather around that time
Answer:
Explanation:
Effort x effort distance = load x resistance distance
effort distance = 8 m ,
load = 2000N
resistance distance = 1/2 m = 0.5 m
Putting the values in the equation above
effort x 8m = 2000N x .5
effort = 2000 x 0.5 / 8
= 125 N
force required = 125 N .
Speed (v) = wavelength (λ) x frequency (f)
If speed is constant and frequency is reduced by factor of 3, you will need to increase wavelength by the same factor so that your changes reduce out.
Answer is A.
The question is incomplete. The complete question is:
A 500-turn coil with a 0.250 m2 area is spun in the Earth’s 5.00 × 10−5 T field, producing a 12.0 kV maximum emf. (a) At what angular velocity must the coil be spun? (b) What is unreasonable about this result? (c) Which assumption or premise is responsible?
Answer:
ω=1.92 × 106 rad/s
Explanation:
Emfo= 12.0×10^3 V
N= 500 turns
A= 0.250 m^2
B= 5.00×10^-5
ω=??????
From
Emfo= NABω
ω= Emfo/NAB
ω= 12.0×10^3/500×0.250×5.00×10^-5
ω=1.92 × 106 rad/s
b) This angular velocity is unreasonably high, it is very much higher than a value that can be obtained for any mechanical system.
c) The unreasonable assumption or premise that a peak voltage as high as 12.0kV may be obtained.
