In order to completely describe a velocity,
you need a speed and a direction.
I would answer but you have no choices lol
Answer:
yes
Explanation:
this is simple
the horizontal line is adjacent
the vertical line is opposite
recall that cos x=adj/hyp
adj=hyp(cos x)
while opp=hyp(sin x)
Answer:
Resistance, R = 8624.18 ohms
Explanation:
It is given that,
The emf of the circuit,
Capacitance of the capacitor,
Voltage across the capacitor, V = 10 V
Time for which the wipers are to operate. The formula for the voltage across the voltage is given by :
So, the value of resistance used in the charging circuit is 8624.18 ohms. Hence, this is the required solution.
Answer: a) 6.7 ; b) -9.5 * 10^-7 C induced in the dielectric on the positive plate and 9.5 * 10^-7 C induced in the other side of the dielectric close to the negative plate.
Explanation: In order to solve this problem we have to use the formule for two parallel plates capacitor, which is given by:
C= εo*A/d where A and d are the cross section and separation of the plates, respectively.
Aditionally we know that C= Q/ΔV and ΔV = E*d
By uning both expression we have:
C= εo*A/d=Q/ΔV=εo*A/d=Q/E*d then
with a dielectric between the plates, the new C is obtained by multiply by k the initial capacitance.
finally we have
εo*k*A=Q/E
then k= Q/(E*εo*A)= 6.7
In the dielectric is induced oposite charge to each plate of the capacitor, The value of induced charge in the dielectric is the same for the capacitor but with oposite sign.