Answer:
C. The concentration of the copper sulfate is too low
Explanation:
Answer:51.44 units
Explanation:
Given
x component of vector is ![-27.3\hat{i}](https://tex.z-dn.net/?f=-27.3%5Chat%7Bi%7D)
y component of vector is ![43.6\hat{j}](https://tex.z-dn.net/?f=43.6%5Chat%7Bj%7D)
so position vector is
![r=-27.3\hat{i}+43.6\hat{j}](https://tex.z-dn.net/?f=r%3D-27.3%5Chat%7Bi%7D%2B43.6%5Chat%7Bj%7D)
Magnitude of vector is
![|r|=\sqrt{27.3^2+43.6^2}](https://tex.z-dn.net/?f=%7Cr%7C%3D%5Csqrt%7B27.3%5E2%2B43.6%5E2%7D)
![|r|=\sqrt{2646.25}](https://tex.z-dn.net/?f=%7Cr%7C%3D%5Csqrt%7B2646.25%7D)
|r|=51.44 units
Direction
![tan\theta =\frac{43.6}{-27.3}=-1.597](https://tex.z-dn.net/?f=tan%5Ctheta%20%3D%5Cfrac%7B43.6%7D%7B-27.3%7D%3D-1.597)
vector is in 2nd quadrant thus
![180-\theta =57.94](https://tex.z-dn.net/?f=180-%5Ctheta%20%3D57.94)
![\theta =122.06^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%20%3D122.06%5E%7B%5Ccirc%7D)
<u> Ohms law: </u> This law relates voltage difference between two points. Mathematically, the law states that V=IR;
Where
V = voltage difference ; in volts
I = Current ; in Amperes
R = Resistance ; in ohms
<u>1. Answer : </u> given that R = 10 ; V= 12 V ; I = ?
From ohms law, I = V/R
= 12/10
= 1.2 Amp.
<u>2. Answer:</u> given that R = 10 ; V= ? ; I = 5
From ohms law, V = IR
= 10×5 = 50 V
<u>3 . Answer:</u> given that R = ? ; V= 120 ; I = 5
From ohms law, R = V/I
= 120/5
= 24 Ω
<u>4 . Answer:</u> given that R = ? ; V= 10 ; I = 20
From ohms law, R = V/I
= 10/20
= 0.5 Ω
<u>5 . Answer:</u> given that R = 480 ; V= 24 ; I = ?
From ohms law, I = V/R
= 24/480
= 0.05 A
<u>6. Answer:</u> given that R = 150 ; V= ? ; I = 1
From ohms law, V = IR
= 1 × 150
= 150 V
ionic compound. The atom that lost the electron becomes a cation, and the atom that gains an electron becomes an anion. The cation and anion bond together because they have opposite charges to form an ionic compound. The question may be looking for just cation or anion, though.