1. during which phase of the moon may a solar eclipse occur? (points : 1)
new moon
first quarter moon
full moon
third quarter moon

question 2. 2. during which phase of the moon may a lunar eclipse occur? (points : 1)
new moon
first quarter moon
full moon
third quarter moon

question 3. 3. which layer of the sun is visible during a total solar eclipse? (points : 1)
photosphere
chromosphere
core
corona
plz

1).  A solar eclipse, if it happens, can only happen at the time of New Moon.

2).  A lunar eclipse, if it happens, can only happen at the time of Full Moon.

3).  The sun's corona is only visible during a total solar eclipse.

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:

energy stored in the capacitor= 9.72 x 10⁻⁴ j

explanation:

the energy stored in the capacitor is given by

e= 1/2 c v²

e= energy stored

c= capacitance= 1.5 µc= 1.5 x 10⁻⁶f

v= potential difference=36 v

so energy stored= e= 1/2 (1.5 x 10⁻⁶) (36)²

energy stored= 9.72 x 10⁻⁴j