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3 years ago

Plz hurry brainliest guaranteed

1 answer:

6 0

Answer is B raindrops conduct electricity from clouds to the ground.
Lightning is formed when air, water droplets, and even ice crystals rub violently against each other inside a thundercloud, creating two opposite kinds of electrical charge

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Describe the acceleration of your bicycle as you ride it from your home to the store

erik [133]

<span>While you're going to the store, your acceleration changes. Some times it increases your overall speed sometimes it reduces it. Constant acceleration does not occur because it would mean that you would constantly accelerate and eventually go past the store. Even reduction of speed is a type of acceleration in physics. When you reach it, we can then calculate how much your velocity was on average and analyze how changing acceleration would've affected it.</span>

8 0

3 years ago

A force F with arrow applied to an object of mass m1 produces an acceleration of 3.10 m/s2. The same force applied to a second o

Bas_tet [7]

Answer:

(a) The value of the ratio m₁/m₂ is 0.581

(b) the acceleration of the combined masses is 1.139 m/s²

Explanation:

Given;

The acceleration of force applied to M₁, a₁ = 3.10 m/s²

The same force applied to M₂ has acceleration, a₂ = 1.80 m/s²

Let this force = F

According Newton's second law of motion;

F = ma

(a) the value of the ratio m₁/m₂

since the applied force is same in both cases, M₁a₁ = M₂a₂

$\frac{m_1}{m_2} = \frac{a_2}{a_1} \\\\\frac{m_1}{m_2} = \frac{1.8}{3.1} \\\\\frac{m_1}{m_2} = 0.581$

(b) the acceleration of m₁ and m₂ combined as one object under the action force F

F = ma

$a = \frac{F}{M} \\\\a = \frac{F}{m_1 + m_2} \\\\a = \frac{F}{0.581m_2 + m_2}\\\\a = \frac{F}{1.581m_2}$

$But, m_2 = \frac{F}{a_2} \\\\a = \frac{F}{1.581m_2} = \frac{F*a_2}{1.581F} \\\\a = \frac{a_2}{1.581} \\\\a = \frac{1.8}{1.581} = 1.139 \ m/s^2$

Therefore, the acceleration of the combined masses is 1.139 m/s²

5 0

3 years ago

True or false Water is a solute in moist air

Advocard [28]

Answer:

True

Explanation:

8 0

2 years ago

Read 2 more answers

A person hums into the top of a well (tube open at only one end) and finds that standing waves are established at frequencies of

S_A_V [24]

Answer:

Explanation:

The resonance in a tube that is open at one end and closed at the other, we can find it because in the closed part you have a node and in the open part you have a belly, so for the fundamental frequency you have ¼ Lam, the different resonances are:

Fundamental λ = 4L

3 harmonica λ = 4L / 3

5 Harmonica λ = 4L / 5

General harmonica λ = 4L / (2n-1) n = 1, 2, 3

Let's apply this equation to our case

The speed of sound is given by

v = λ f

λ = v / f

Let's look for wavelengths

λ₁ = 40.6 / 343 = 0.1184 m

λ₂ = 67.7 / 343 = 0.1974 m

λ₃ = 94.7 / 343 = 0.2761 m

Since the wavelengths are close we can assume that it corresponds to consecutive integers, where for the first one it corresponds to the integer n

λ ₁ = 4L / (2n-1)

λ₂ = 4L / (2 (n + 1) -1) = 4L / (2n +1)

λ₃ = 4L / (2 (n + 2) -1) = 4L / (2n + 3)

Let's clear in the first and second equations

2n-1 = 4L / λ₁

2n +1 = 4L / λ₂

Let's solve the system of equations

4L / λ₁ + 1 = 4L / λ₂ -1

4L / λ₂ – 4L / λ₁ = 2

2L (1 / λ₂ - 1 / λ₁) = 1

1 / L = 2 (1 / λ₂ -1 / λ₁)

1 / L = 2 (1 / 0.1974 - 1 / 0.1184)

1 / L = 2 (5,066 - 8,446) = -6.76

L = 0.1479 m

3 0

3 years ago

Can someone help me on how to do this?

Galina-37 [17]

Explanation:

Recall that

$1\:\text{micron} = 1\:\mu\text{m} = 10^{-6}\:\text{m}$ so the speed of the bacterium is

$v = \dfrac{6.82×10^{-6}\:\text{m}}{3.5\:\text{s}} = 1.9×10^{-6}\:\text{m/s}$

Next, we convert this speed to km/hr. Recall that

$1\:\text{km} = 1000\:\text{m}$

$1\:\text{hr} = 60\:\text{minutes} = 3600\:\text{s}$

Therefore,

$1.9×10^{-6}\:\dfrac{\text{m}}{\text{s}}×\left(\dfrac{1\:\text{km}}{1000\:\text{m}}\right)×\left(\dfrac{3600\:\text{s}}{1\:\text{hr}}\right)$

$= 6.8×10^{-6}\:\text{km/hr}$

8 0

2 years ago