Answer:
The magnitude of the voltage is and the direction of the current is clockwise.
Explanation:
Given that,
Number of turns = 9
Magnetic field = 0.5 T
Diameter = 3 cm
Time t = 0.14 s
We need to calculate the flux
Using formula of flux
Put the value into the formula
We need to calculate the emf
Using formula of emf
Negative sign shows the direction of current.
Hence, The magnitude of the voltage is and the direction of the current is clockwise.
99.0km/h =27.5m/s (this is the initial speed)
The final speed is zero
The distance is 50.0m
Therefore you use the formula:
vfinal²=vinitial²+2ad
a=(vfinal²-vinitial²)/2d
= (0²-27.5²)/(2x50.0)
=-7.5625 or in correct sigdigs -7.56m/s²
Hope this helps!
Astronomers think Jupiter generates its internal heat by contracting, changing gravitational potential energy into thermal energy.
Answer: Option E
<u>Explanation:</u>
The internal heat of Jupiter is primarily the primary heat released during gravitational collapse when its creation occurs. Because of their large dimensions, this giant plant was heavily heated by creating surrounding material on their cores.
The largest planet, Jupiter was the hottest. Part of this warming may still remain on such large planets. In addition, it is possible that this giant, mainly gaseous planets produce heat after they are formed as a result of slow contraction. With such a large mass, even a small shrinkage can generate high heat.
Answer:
D. When a chemical reaction releases energy, it is an example of an endothermic reaction.
Explanation:
"Endo" means within. Therefore, an endothermic reaction releasing energy makes no sense.
p.s.
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