Questions asked
Which of the following compounds are strong electrolytes? I. Benzene, C6H6 II. CsOH III. NH4NO3 IV. HCIO4 I only II only IV only II and III only II, III, and IV only
Question 7 (1 point) ? Saved A small electrical motor inside a toy truck moves 4 wheels each 0.20 kg at a speed of 3.3 m/s for 2.1. What is the power put out by the motor? 0.032W 0.11 W 0.017 W 2.1 W
2. Use the graph of $f$ to state the value of each quantity, if it exists. If it does not exist, explain why. (6pts) $\lim_{x\to -5^+} f(x) =$ $f(-5) =$ $\lim_{x\to -3^-} f(x) =$ $\lim_{x\to -1^-} f(x) =$ $f(-3) =$ $\lim_{x\to -1^+} f(x) =$ $\lim_{x\to 1^-} f(x) =$ $\lim_{x\to 2^-} f(x) =$ $\lim_{x\to 4^-} f(x) =$ $f(4) =$
For the series below calculate find the number of terms $n$ that must be added in order to find the sum to the indicated accuracy. $\sum_{n=1}^{\infty} \left( \frac{(-1)^n 3}{n^{1.4}} \right)$ $|error| < 0.0001 n = $
A long solid copper rod carries a current whose density $J$ varies with distance from the axis $r$ according to the function $J = \frac{1.5 \times 10^8}{\pi} r$ Determine the strength of the magnetic field as a function of $r$ within the rod.
Determine the 3-dB BW required for a Gaussian pulse shaping filter to produce a 0.5 GMSK with a peak frequency deviation of 50 kHz.
Find \frac{f(x + h) - f(x)}{h} f(x) = 4x - 12 A. 4 B. -4h C. 3 D. 12
Question 7 Given this circuit, if $V_{cc} = 10V$, $R_1 = 10K$, $R_2 = 20K$, $R_B = 100K$, $R_L = 470\Omega$ $\beta = 100$, what would $I_B$ be? 77.5 mA 77.5 $\mu A$ 94 mA 0 mA 94 $\mu A$
2. Suppose that the rref of an augmented matrix of a linear system results as \begin{bmatrix} 1 & 0 & 1 & 1 & 3 \\ 0 & 1 & 0 & 2 & 1 \\ 0 & 0 & 0 & 0 & 0 \end{bmatrix} (a) What are the leading variables? (b) What are the free variables? (c) What is the corresponding system of equations in terms of the free variables. (d) Write the solutions in vector form.
Problem 3. Determine the force in members BC, BE, and EF of the truss shown. Use the method of sections.
