Answer:
B) electrons transferred from sphere to rod.
(2) 1.248 x 10¹¹ electrons were transferred
Explanation:
Given;
initial charge on the plastic rod, q₁ = 15nC
final charge on the plastic rod, q₂ = - 5nC
let the charge acquired by the plastic rod = q
q + 15nC = -5nC
q = -5nC - 15nC
q = -20 nC
Thus, the plastic rod acquired excess negative charge from the metal sphere.
Hence, electrons transferred from sphere to rod
B) electrons transferred from sphere to rod.
2) How many charged particles were transferred?
1.602 x 10⁻¹⁹ C = 1 electron
20 x 10⁻⁹ C = ?
= 1.248 x 10¹¹ electrons
Thus,1.248 x 10¹¹ electrons were transferred
I think it would be A: gold ring
if you were to place all of these on a bed of water, the ring would be the first to sink.
I don't see a table anywhere near here, but I think I can show you how to calculate those quantities.
From your description, I'm picturing two 32-ohm resistors in parallel, connected across a 96-volt battery or other power supply.
In parallel, each resistor has the same voltage across it. So it might be easier
if we begin by considering them separately:
Current through one resistor = V/R = 96/32 = 3 Amperes.
Current through both of them, supplied by the battery = <em>6 Amperes</em>.
Power dissipated by one resistor = I² R = (3)² (32) = 9 x 32 = 288 watts.
Power dissipated by both of them, supplied by the battery = <em>576 watts</em>.
Equivalent resistance as seen by the battery = (32)² / 64 = <em>16 ohms</em>.
<u>Check:</u>
If the battery sees 16 ohms, then the current is V/R = 96/16 = <em>6 Amp</em>.
Power supplied by the battery is (V x I) = 96 x 6 = <em>576 watts</em>.
yay !
<u>Note:</u>
288 watts is a lot of power. You'll need big, expensive resistors,
possibly even immersed in an oil bath, unless your resistors are
coils of resistive wire and you plan on toasting bread with them.
According to the properties you provided, that should be metals.
Answer:
Explanation:
We want to write the equation of displacement (vertical in this case) for accelerated motion, which is . If we take the upward direction as positive, assume it starts from rest and from the ground, and (the units are wrong in the text, if accelerates at that magnitude, it's an acceleration, in particular in ), then we have .
We want to know the time when , so we need to solve , for which we have:
This means it takes 4 seconds for a rocket accelerating at to reach a height of 192m.