Ask question

Ask question

All categories

3 years ago

5

Two small plastics balls are hanging on silk threads, 50 mm from each other. The charges on the balls are indicated 1.3.1 Calcul

ate the magnitude of the force that the balls iniatially exert on each other

1 answer:

Nastasia [14]3 years ago

5 0

I calculated the magnitude of the force that the balls imitially exert to each other

You might be interested in

An incandescent bulb is supplied with

Serga [27]

Answer:

Efficiency = 5%

Explanation:

Given that,

Supplies energy to the bulb = 100 J

Transferred energy by the bulb = 5 J

We need to find the efficiency of the bulb. It can be given by "

$\eta=\dfrac{\text{useful energy out}}{\text{useful energy in}}\times 100\\\\=\dfrac{5}{100}\times 100\\\\=5\%$

So, the efficiency of the bulb is 5%.

8 0

3 years ago

A 36,287 kg truck has a momentum of 907,175 kg • m/s. What is the trucks velocity.

Airida [17]

Momentum = Mass x Velocity

Put the values where they belong and solve for Velocity.

In this case, since Mass is being multiplied by Velocity, to solve for be Velocity you would divide both sides by Velocity. The velocity will equal the momentum divided by the mass.

4 0

4 years ago

An audio engineer takes decibel readings at distances of r1 = 13 m and r2 = 24 m from a concert stage speaker during a sound che

N76 [4]

Answer

given,

Distance for decibel reading

r₁ = 13 m

r₂ = 24 m

When the engineer is at r₁ reading is β₁ = 101 dB

now, Calculating the Intensity at r₁

Using formula

$\beta = 10 log(\dfrac{I}{I_0})$

I₀ = 10⁻¹² W/m²

now inserting the given values

$101= 10 log(\dfrac{I}{10^{-12}})$

$10.1= log(\dfrac{I}{10^{-12}})$

$\dfrac{I}{10^{-12}}= 10^{10.1}$

$I =10^{10.1} \times 10^{-12}$

I = 0.01258 W/m²

now, calculating power at r₁

P₁ = I₁ A₁

P₁ = 0.01258 x 4 π r²

P₁ = 0.01258 x 4 π x 13²

P₁ = 26.72 W

7 0

3 years ago

Does both the independent variable and the dependent variable affect each other?

lubasha [3.4K]

No. The DEPENDENT variable is the only one that DEPENDS on
the other one.

The INdependent variable doesn't depend on anything; it doesn't
change until YOU change it.

3 0

3 years ago

Solids in which the atoms have no particular order or pattern are called

posledela

Answer:

Amorphous solids are composed of atoms or molecules that are in no particular order. Each particle is in a particular spot, but the particles are in no organized pattern. Examples include rubber and wax. Crystalline solids have a very orderly, three-dimensional arrangement of atoms or molecules

Explanation:

8 0

3 years ago