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2 years ago

8

What factors affect the speed of a wave? Check all that apply. the amplitude of the wave the energy of the wave the temperature

of the medium the type of wave the type of medium

1 answer:

Lena [83]2 years ago

4 0

Answer:

I believe its 1,2, and 5

Explanation:

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2 years ago

Under which conditions (in terms of kinetic energy) does boiling occur? How is the kinetic energy in the liquid increased?

Simora [160]

Explanation:

Boiling is defined as a process in which vapor pressure of a liquid substance becomes equal to the atmospheric pressure.

During this change liquid and vapors remain in equilibrium and the equation for this change is as follows.

$X(l) \rightleftharpoons X(g)$

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3 years ago

if we react 117 grams of sodium chloride with 340 grams of silver nitrate in a complete reaction what will be the mass, in grams

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2 years ago

The radioactive decay of a certain sample produced 846 disintegrations per minute. exactly 3.00 days later, the rate of decay wa

Margarita [4]

Answer:

$\boxed{\text{1.81 da}}$

Explanation:

1. Calculate the decay constant

The integrated rate law for radioactive decay is 1

$\ln\dfrac{A_{0}}{A_{t}} = kt$

where

A₀ and A_t are the counts at t = 0 and t

k is the radioactive decay constant

$\ln \dfrac{846}{269} = k \times 3.00\\\\\ln3.145 = 3.00k\\1.146 = 3.00k\\\\k =\dfrac{1.146}{3}\\\\k = \text{0.382 /da}\\$

2. Calculate the half-life

$t_{\frac{1}{2}} = \dfrac{\ln2}{k} = \dfrac{\ln2}{0.382} = \text{1.81 da}$

The half-life for decay is $\boxed{\textbf{1.81 da}}$ .

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3 years ago