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3 years ago

Which of the

Physics

1 answer:

sveticcg [70]3 years ago

4 0

B and E
Explanation: Wavelength can be measure from any point until the wave repeats itself then that’s one wavelength.

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To practice Problem-Solving Strategy 22.1 for electric force problems. Two charged particles, with charges q1=qq1=q and q2=4qq2=

solmaris [256]

Answer:

x₂ = 0.01336

Explanation:

In this exercise we use the translational equilibrium equation

F₁₃ - F₂₃ = 0

F₁₃ = F₂₃

at the point where charge 3 is placed the two electric forces have the same magnitude

let us use the expression of Coulomb's law for the electric force

F₁₃ = ka q₁ q₃ / r₁₃²

F₂₃ = ka q₂ q₃ / r₂₃²

we substitute

k q₁ q₃ / r₁₃² = k q₂ q₃ / r₂₃²

now imprescriptibility suppose that particle 1 is at the origin of the coordinate system, particle 2 is at a distance d = 2.00cm = 2 10-2 m, therefore let's call the distance from particle 1 to particle 3 as x

r₁₃ = x

R₂₃ = d-x

In the exercise we are given the charges for the particle1 q1 = q, for the particle 2 the charge is q2 = 4q the distance between them is d = 2.00cm = 0.0200 m, the value of q = 2.00 nC = 2.00 10⁻⁹ C

let's substitute these values

q₁ / x₂ = q₂ / (d-x)²

let's clear x

(d-x)² = q₂ / q₁ x²

d² - 2dx + x₂ = q₂ /q₁ x²

x² (1-q₂ / q₁) - 2d x + d² = 0

let's substitute the values and solve the quadratic equation

x² (1 - 4q / q) - 2 0.02 x + 0.02² = 0

-3 x² - 0.04 x + 0.0004 = 0

x² + 0.0133 x - 0.0001333 = 0

x = [-0.0133 ±√(0.0133² + 4 0.00013333)] / 2

x = [-0.0133 + - 0.026664] /2

x₁ = -0.01998 m

x₂ = 0.01336 m

Since load 3 must be between charged 1 and 2 the correct answer is

x₂ = 0.01336

4 0

4 years ago

According to the law of conservation of energy,

vodka [1.7K]

According to the law of conservation of energy,

A. an object loses most of its energy as friction

<u>B. the total amount of energy for a system stays the same</u>

Energy is never lost due to the law of conservation

C. the potential energy of an object is always greater than its kinetic energy

D. the kinetic energy of an object is always greater than its potential energy

8 0

3 years ago

Read 2 more answers

What was the major shortcoming of rutherford’s model of the atom?

lisabon 2012 [21]

The major shortcoming of Rutherford's model was that it was incomplete. It did not explain how the atom's negatively charged electrons are distrubuted in the space surronding its positively charged nucleus. A form of energy that exhibits wavelike behavior as it travels through space

7 0

3 years ago

The following images show the four terrestrial planets in our solar system (not to scale). Rank these planets from left to right

Elina [12.6K]

Answer:

Venus, Earth, Mars, Mercury

Explanation:

The atmospheric pressure is determined by the gravitational attraction of the planet over the atmosphere.

Since the gravitational force is defined as:

$F = G\frac{m1m2}{r^{2}}$ (1)

Notice from equation 1, how the gravitational force depends on the masses of the two objects that are interacting and the distance to the square between them.

For this particular case, m1 is the mass of the planet and m2 is the mass of the gasses in the atmosphere. While the r is the distance between those two.

Venus has a more dense atmosphere and than the Earth, so it has a higher atmospheric pressure. The same case can be seen for the Earth and Mars.

Mercury is the one with the lower atmospheric pressure since it has a thin atmosphere as a consequence of his small size.

3 0

4 years ago

Calculate the minimum average power output necessary for a person to run up a 12.0 m long hillside, which is inclined at 25.0° a

Viktor [21]

Answer:

Power, P = 924.15 watts

Explanation:

Given that,

Length of the ramp, l = 12 m

Mass of the person, m = 55.8 kg