The answer for sure is 5 m/s
Answer:
option (c)
Explanation:
mass of iron = 0.10 kg
mass of copper = 0.16 kg
rise in temperature, ΔT = 35°C
specific heat of iron = 450 J/kg°C
specific heat of copper = 390 J/kg°C
Heat by iron (H1) = mass of iron x specific heat of iron x ΔT
H1 = 0.10 x 450 x 35 = 1575 J
Heat by copper (H2) = mass of copper x specific heat of copper x ΔT
H1 = 0.16 x 390 x 35 = 2184 J
Total heat H = H1 + H2
H = 1575 + 2184 = 3759 J
by rounding off
H = 4000 J
Answer:
ion is an electrically charged particle
Explanation:
there are 2 types of ions. anion an cation anion is negatively charged
cation is positively charged
<h2><em>state coulombs law in word</em></h2>
- <em>: a statement in physics: <u>the force of attraction or repulsion acting along a straight line between two electric charges is directly proportional to the product of the charges and inversely to the square of the distance between </u></em><em><u>them</u></em>
<em><u>hope </u></em><em><u>it</u></em><em><u> helps</u></em>
<em><u>#</u></em><em><u>c</u></em><em><u>a</u></em><em><u>r</u></em><em><u>r</u></em><em><u>y</u></em><em><u> </u></em><em><u>on</u></em><em><u> learning</u></em>
Answer
given,
angular acceleration
Assume radius of fan be 1.75 ft
speed of tip P at t = 3
blade at rest at t = 0 s
integrating both side
at t = 3 s
ω = 27.82 rad/s
we know,
v = r ω
v = 27.82 x 1.75
v = 48.69 ft/s
again using formula
integrating both side
at t= 3
θ = 8.54 rev