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Question 17 of 65 Which statement is TRUE regarding mechanical cleaners? Ultrasonic cleaners use the process of impingement to clean endoscopes. Ortho-phthalaldehyde concentrate should not be used in automated endoscope reprocessors. Ultrasonic cleaners work by creating small bubbles that implode on the surface of an instrument. Electrical, battery, and pneumatic devices should be washed using an automated mechanical washer.

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Write the logarithmic equation in exponential form. $\ln\frac{4}{5} = -0.223...$

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Equilateral triangle with the length of each side a = 27 cm, see the picture below. The masses are m₁ = 8.5 kg (located at the origin), m₂ = 8 kg (located along the positive x-direction), and m₃ = 12.5 kg. Find the position of the center of mass of the system. The x-component of the CoM position, XCOM = Units Select an answer The y-component of the CoM position, YCOM Units Select an answer The potential energy of the system, PEG = Select an answer g X Using the CoM position find the gravitational potential energy of the entire system relative to the y = 0 level. Note that PEG = mtot S YCOM, where mtot is the total mass of the system and YCOM is the y-component of the CoM position. Units

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Write the augmented matrix of the system and use it to solve the system. If the system has an infinite number of solutions, express them in terms of the parameter $z$. $\begin{cases} x + 15y - 25z = -33 \ -x + y + 7z = 1 \ -x - 3y + z = 9 \end{cases}$

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3. An electronic siren is emitting sound with power 14.0 W and frequency 2850 Hz when it is dropped off the edge of a tall cliff. The temperature of the air near the cliff is T = 11.5° C. Hint: make sure to account for the travel time of the sound. (a) (10 points) After the siren has been falling for t = 6.24 s, an observer at the top of the cliff will hear what intensity sound in (dB)? (b) (10 points) What frequency sound will the observer hear at this same instant? (c) (5 points) Consider that the base of the cliff was about three hundred meters beneath the observer, and thus also below the instantaneous location of the siren relevant to the questions above. If this cliff base was solid flat rock and reflected sound quite well, would the observer at the top of the cliff hear a beat? Explain why or why not.

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Consider the following system of linear equations. $5x + 22y = -10$ $20x + 29y = -11$ It can also be written in the form $\begin{pmatrix} 5 & 22 \ 20 & 29 \end{pmatrix} \begin{pmatrix} x \ y \end{pmatrix} = \begin{pmatrix} -10 \ -11 \end{pmatrix}$. If you multiply the inverse of $\begin{pmatrix} 5 & 22 \ 20 & 29 \end{pmatrix}$ with the vector $\begin{pmatrix} -10 \ -11 \end{pmatrix}$, the first element of the product will be the value of x and the second element will be the value of y. If the matrix $\begin{pmatrix} 5 & 22 \ 20 & 29 \end{pmatrix}$ has no inverse, then the system has no solutions. Using this instructions solve the given system of equations.

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Simplify the expression.\\ $\frac{p^{-\frac{6}{7}}}{p^{\frac{2}{7}}p^{-\frac{3}{5}}}$

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Directions: Write T if the statement is TRUE and F if it is FALSE. 1. The next terms of a sequence cannot be determined by giving only the first 2 terms and no other information. 2. If the first 3 terms of a sequence are given, then it can be examined as to whether it is an arithmetic sequence or not.

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D. APPLY Write the formula, solution and complete answer from the given problem below. (5 points) 1. The diameter of a circular table is 3m. Find the area. 2. Find the area of the top and bottom of a can of milk whose diameter of 10.8 cm

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A random variable X has P(3.4 < X < 16.6) \geq 35/36. Use Chebyshev's Theorem to find the standard deviation of X. 4.4 3.3 1.1 2.2

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