Ineed with these science questions, leave explanations .

which acid will undergo 100% dissociation when dissolved in water?
a c25cooh
b ch3cooh
c hcl
d hf

a parallel dc circuit has a total current of 4 amperes and a resistance of .5 ohms. if the current is doubled, and the resistance is halved, how many times more is the new power compared to the old power?
a 2
b 4
c 1/4
d 1/2

1.

C) HCL

Explanation:

here HCL is 100% dissolved in the water because electronegativity difference between H and CL is sufficiently high and it will easily dissociate the charge into two ions.

So here correct answer will be

C). HCL

2.

A) 2

Explanation:

Electrical power is defined in terms of current and resistance as

now we will have current is doubled but resistance is halved

so change will be given as

so we have

so here power is doubled

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

inverse v=i*r

nice nice