4 years ago

The flow of ____ forms the physical basis for electric charge.

Physics

1 answer:

andriy [413]4 years ago

7 0

Answer:

electrons

Explanation:

electrons are the only subatomic particle that flow

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when an object slides over a smooth horizontal surface, how does the force of friction depend on the surface area of blocks that

Marina CMI [18]

Answer: with a greater surface area, there will be a greater force of friction

Explanation:

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3 years ago

2001240Determine the specific kinetic energy of a mass whose velocity is 40 m/s, in kJ/kg.

guapka [62]

Answer:

The specific kinetic energy of a mass is 0.8 kJ/kg

Explanation:

Given that,

Velocity = 40 m/s

Specific kinetic energy is the kinetic energy per unit mass.

We need to calculate the specific kinetic energy

Using formula of specific kinetic energy

$K.E=\dfrac{\dfrac{1}{2}mv^2}{m}$

$K.E=\dfrac{v^2}{2}$

Put the value into the formula

$K.E=\dfrac{40^2}{2}$

$K.E=800\ J/kg$

We know that,

1 kJ = 1000 J

or, 1J=0.001 KJ

The specific energy is

$K.E=800\times0.001$

$K.E=0.8\ kJ/kg$

Hence, The specific kinetic energy of a mass is 0.8 kJ/kg

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3 years ago

_________statistics are measures that summarize the characteristics of a sample

Tamiku [17]

Answer:

Explanation:

Descriptive statistics statistics are measures that summarize the characteristics of a sample.

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3 years ago

How do accelerating objects act

Nitella [24]

Explanation:

They speed up, slow down, or change direction.

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3 years ago

Read 2 more answers

Electromagnetic waves travel at a speed of 3.0 x 108 m/s. A radio station transmits waves

Sophie [7]

Answer:

1.2×10⁶ Hz

Explanation:

Applying,

v = λf............. Equation 1

Where v = speed of wave, λ = wavelength, f = frequency.

make f the subject of the equation

f = v/λ............... Equation 2

From the question,

Given: v = 3.0×10⁸ m/s, λ = 2.5×10² m

Substitute these values into equation 2

f = 3.0×10⁸/2.5×10²

f = 1.2×10⁶ Hz

6 0

3 years ago