Answer:
2.5 m/s²
Explanation:
a = ∆v/∆t = (15 m/s)/(6 s) = (15/6) m/s² = 2.5 m/s²
Answer:
350.72 m/s
Explanation:
Formula for velocity of wave is;
v = fλ
Where;
v is speed
f is frequency
λ is wavelength
We are given;
f = 512 Hz
λ = 0.685 m
Thus;
v = 512 × 0.685
v = 350.72 m/s
Chlorine needs to gain one electron and sodium needs to lose one electron
Answer: current I = 1.875A
Explanation:
If the resistors are connected in series,
Then the equivalent resistance will be
R = 6 + 18 + 15 + 9
R = 48 ohms
Using ohms law
V = IR
Make current I the subject of formula
I = V/R
I = 90/48
I = 1.875A
And if the resistors are connected in parallel, the equivalent resistance will be
1/R = 1/6 + 1/18 + 1/15 + 1/9
1/R = 0.166 + 0.055 + 0.066 + 0.111
R = 1/0.3999
R = 2.5 ohms
Using ohms law
V = IR
I = 90/2.5
Current I = 35.99A
M₁V₁ = m₂V₂
<span>KE = ½mV² </span>
<span>½m₁V₁² = 2*½m₂V₂² </span>
<span>m₁V₁ = m₂V₂ </span>
<span>½m₁V₁² = m₂V₂² </span>
<span>m₁/m₂ = V₂/V₁ </span>
<span>m₁/m₂ = 2V₂²/V₁² </span>
<span>V₂/V₁ = √(½m₁/m₂) </span>
<span>m₁/m₂ = √(½m₁/m₂) </span>
<span>squaring</span>
<span>(m₁/m₂)² = ½m₁/m₂ </span>
<span>2m₂m₁² = m₁m₂² </span>
<span>divide by m₁m₂ </span>
<span>2m₁ = m₂ </span>
<span>m₂/m₁ = 2
hope this helps</span>
