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kari74 [83]
3 years ago
11

Why a bulb contains coiled wire?​

Physics
1 answer:
LiRa [457]3 years ago
4 0

Answer:

The filament is coiled to give it greater length. If the filament was just a piece of straight wire it would only give out a small amount of light. By curling the wire into a coil, a very long length of wire can be stored in a small space. When electricity flows through the coil it can give out much more light.

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Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially atx1 = 14.7 mm.In this confi
Sladkaya [172]

Answer:

The force magnitude is 1.75 μN acting outward from the origin towards x₂

Explanation:

The given parameters, are;

The location of q₁ = The origin

The location of q₂ = 14.7 mm from q₁

The repulsive force exerted on q₂ by q₁ = 2.62 μN

The location the particle q₂ is located to =  18.0 mm from q₁

By Coulomb's law, we have;

F = k\dfrac{q_1 \times q_2 }{r^2}

Where;

k = Coulomb constant ≈ 8.99 × 10⁹ kg·m³/(s²·C²)

r = The distance between the particles

F = The force acting between the particles

When r = 14.7 mm F = 2.62 μN

∴ q₂ × q₁ = r² × F/k = (14.7×10^(-3))²×2.62×10^(-6)/(8.9875517923^9) ≈ 1.48 × 10⁻¹⁸

q₂ × q₁ = 1.48 × 10⁻¹⁸ C²

When the distance is increased to 18.0 mm, we have;

F = (8.9875517923^9) × 1.4796647 × 10^(-18)/((18×10^(-3))²) = 1.75 × 10⁻⁶ N

∴ F = 1.75 μN.

Therefore;

The force magnitude is 1.75 μN outward from the origin towards  x₂.

8 0
3 years ago
Which type of make sure looks like it is one substance
Doss [256]

D. Homogeneous

These solutions look to be just one solution when combined.

5 0
3 years ago
A toy car, mass of 0.025 kg, is traveling on a horizontal track with a velocity of 5 m/s. If
IrinaVladis [17]

Answer:

1.25 m

Explanation:

This is the vertical height not the distance along the slope.

K=U\\\frac{1}{2}mv^{2} = mgh\\h = \frac{v^{2}}{2g}=\frac{25}{20}=1.25 m

3 0
3 years ago
A 25 N force is applied to a 1.4 kg mass on level ground. If a 5 N frictional force is present between the surface and the objec
Zielflug [23.3K]

Given parameters:

Force applied to the mass = 25N

Mass of the body = 1.4kg

Frictional force  = 5N

Unknown:

Acceleration of the object = ?

Solution:

The net force on the object;

     Fapplied - Frictional force = net force (m x a)

 m is the mass of the body

 a is the acceleration

Input the parameters and solve;

    25 - 5 = 1.4 x a

         1.4a  = 20

             a = \frac{20}{1.4}   = 14.3m/s²

         

The magnitude of the acceleration of the object is 14.3m/s²

8 0
4 years ago
This is the build up of substance such as pesticides in an organism and occurs when an organism absorb a substance at a rate fas
GuDViN [60]

Answer:

which the substance is lost by catabolism and excretion.

Explanation:

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3 years ago
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