Answer:
d. usually neutral
Explanation:
The overall charge of an ionic compound is usually neutral.
There is no net charge on the compound formed by an ionic bond due to the electrical stability that is derived from this bond association.
In an ionic bond, a metal transfers some of its electrons to a non-metal. The metal is electropositive and the non-metal is electronegative.
Therefore, the result is that two ions are produced which attracts each other with an electrostatic force.
Answer:
Ns = 293 turns
Explanation:
The magnetic field of a solenoid is given as follows:
B = μ₀NI/L
where,
B = Magnetic Field = (40.5 Gauss)(1 T/10000 Gauss) = 4.05 x 10⁻³ T
μ₀ = Permeability of Free Space = 4π x 10⁻⁷ T/Am
N = No. turns in solenoid = ?
I = Current = 0.05 A
L = Length = 10 cm = 0.1 m
Therefore,
4.05 x 10⁻³ = (4π x 10⁻⁷ )(N)(0.05)/0.1
N = (4.05 x 10⁻³)/(6.28 x 10⁻⁷)
N = 6446 turns
Now, we use turns ratio formula for transformer:
Np/Ns = Vp/Vs
where,
Np = No. of turns in primary coil = 6446 turns
Ns = No. of turns in secondary coil = ?
Vp = Primary Voltage = 220 V
Vs = Secondary Voltage = 10 V
Therefore,
6446 turns/Ns = 220 V/10 V
Ns = 64460 turns/220 V
<u>Ns = 293 turns</u>
Answer:
I think it is gas.
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Answer:
9.8N
Explanation:
Here we can get gravitational acceleration according to the place where object is placed by bellow equation
g = GM/R²
g - Gravitational Acceleration
G - Gravitational constant (6.67×10-11)
R - Distance ( Radius )
g = 6.67 × 10-11 × 1024 /(6.37×106)²
g = 9.8 m/s²
There for
Weight = Mass × Gravitational acceleration
= 1×9.8
= 9.8 N