Answer:
39.375 A
Explanation:
To find the induced current, we use the relation
e = -ΔΦ/Δt, where
ΔΦ = change in magnetic flux of the bracelet
Δt = change in time, = 20 ms
Also, Φ = A.ΔB, such that
A = area of the bracelet, 0.005m²
ΔB = magnetic field strength of the bracelet = 1.35 - 4.5 = -3.15 T
ΔΦ = A.ΔB
ΔΦ = 0.005 * -3.15
ΔΦ = -.01575 wb
e = -ΔΦ/Δt
e = -0.01575 / 20*10^-3
e = 0.7875 V
From the question, the resistance of the bracelet is 0.02 ohm, so
From Ohms Law, I = V/R
I = 0.7875 / 0.02
I = 39.375 A
Answer - Liquid to Gas
Liquid to gas is your answer. Remember, particles are hardly moving as a solid, and gradually increase in speed during phase changes. Solid>Liquid>Gas>Plasma
Solid being the slowest, Plasma the fastest.
<em>Hope this helps!</em>
Answer: D) occurs when water is evaporated.
Explanation:
A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.
A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.
a). iron rusts :the chemical reaction occurs by combination of iron with oxygen , thus a chemical change.
b) sugar is heated into caramel. the chemical reaction occurs by decomposition , thus a chemical change.
c) glucose is converted into energy within your cells: the chemical reaction occurs by decomposition , thus a chemical change.
d) when water is evaporated : Only the state changes and thus a physical change and cannot be reversed.
e) when propane is burned for heat: the chemical reaction as propane combines with oxygen to form carbon dioxide and water , thus a chemical change.
Answer:2000J
Explanation: just a formula
W =Fdcos(a)= 100*20*cos(0°)= 2000J
remember that the angle is 0° that is force acting along the movement
This path is called a circuit. Batteries<span> have three parts, an anode (-), a cathode (+), and the electrolyte. ... The chemical reactions in the </span>battery<span> causes a build up of electrons at the anode. This results in an electrical difference between the anode and the cathode.</span>
