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question:A side-angle-side triangle has sides of length 2.3 and 9.4 units and an angle of 89 degrees. Determine the locations of the triangle's vertices and the measures of the three interior angles.

answer:To find the locations of the vertices, we can use the Law of Cosines. Let the third vertex be (x, y). Then, we have: 9.4^2 = 2.3^2 + x^2 - 2(2.3)(x)cos(89) x = 9.12852 2.3^2 = 9.4^2 + y^2 - 2(9.4)(y)cos(89) y = 2.24281 Therefore, the vertices of the triangle are (0, 0), (9.63822, 0), and (9.12852, 2.24281). To find the measures of the three interior angles, we can use the Law of Sines. We have: sin(A) / 2.3 = sin(89) / 9.4 A = 0.240921 radians sin(B) / 9.4 = sin(89) / 2.3 B = 1.34733 radians C = 180 - A - B = 1.55334 radians Therefore, the measures of the three interior angles are 0.240921 radians, 1.34733 radians, and 1.55334 radians. Vertices: (0, 0), (9.63822, 0), (9.12852, 2.24281) Angles: (0.240921 radians, 1.34733 radians, 1.55334 radians)

question:Find the Jacobian matrix of the vector-valued function mathbf{r}(x, y, z) = langle sinh(y), log(x+y), e^{y+z^4} rangle.

answer:The Jacobian matrix of mathbf{r}(x, y, z) is given by: J(mathbf{r}(x, y, z)) = begin{bmatrix} frac{partial}{partial x} [sinh(y)] & frac{partial}{partial y} [sinh(y)] & frac{partial}{partial z} [sinh(y)] frac{partial}{partial x} [log(x+y)] & frac{partial}{partial y} [log(x+y)] & frac{partial}{partial z} [log(x+y)] frac{partial}{partial x} [e^{y+z^4}] & frac{partial}{partial y} [e^{y+z^4}] & frac{partial}{partial z} [e^{y+z^4}] end{bmatrix} = begin{bmatrix} 0 & cosh(y) & 0 frac{1}{x+y} & frac{1}{x+y} & 0 0 & e^{y+z^4} & 4z^3 e^{y+z^4} end{bmatrix}

question:Calculate the number of moles of ammonia gas that can be produced from 50.0 grams of nitrogen gas at STP, assuming excess hydrogen gas is present.

answer:Given Data: Mass of nitrogen gas: {eq}{rm{m}} = 50.0;{rm{g}} {/eq}. Given Reaction: {eq}3;{{rm{H}}_2};left( {rm{g}} right) + {{rm{N}}_2};left( {rm{g}} right) to 2;{rm{N}}{{rm{H}}_3};left( {rm{g}} right) {/eq}. To Calculate: The number of moles of ammonia gas produced. The molecular weight of nitrogen gas is 28.014 g/mol. The moles of nitrogen gas can be calculated using the formula given below. {eq}{rm{n}} = dfrac{{rm{m}}}{{{{rm{M}}_{rm{w}}}}} {/eq} On substituting the corresponding values in the above equation, we get, {eq}begin{align*} {rm{n}} &= dfrac{{50.0;{rm{g}}}}{{28.014;dfrac{{rm{g}}}{{{rm{mol}}}}}} &= 1.78;{rm{mol}} end{align*} {/eq} From the reaction stoichiometry, 1 mole of nitrogen gas {eq}left( {{{rm{N}}_2}} right) {/eq} produces 2 moles of ammonia gas {eq}left( {{rm{N}}{{rm{H}}_3}} right) {/eq}. Thus, the moles of ammonia gas produced from 1.78 moles of nitrogen gas can be calculated as shown below. {eq}begin{align*} {rm{Moles}};{rm{of}};{{rm{N}}_2};{rm{gas}} &= 1.78;{rm{mol}};{{rm{N}}_2} times dfrac{{2;{rm{mol}};{rm{N}}{{rm{H}}_3}}}{{1;{rm{mol}};{{rm{N}}_2}}} &= 3.56;{rm{mol}} end{align*} {/eq} Hence, 3.56 moles of ammonia gas can be produced from 50.0 grams of nitrogen gas at STP.

question:How far does a bicyclist travel if they start from rest, accelerate at 4.0 m/s² for 3.0 seconds, and then maintain a constant speed for 20.0 seconds?

answer:Given: - Initial velocity, ( v_i = 0 ) m/s - Acceleration, ( a = 4 ) m/s² - Time with constant acceleration, ( t_1 = 3 ) s - Time with constant speed, ( t_2 = 20 ) s The displacement during acceleration (first 3 seconds) is calculated using the kinematic equation: [ x_1 = frac{1}{2} at_1^2 ] [ x_1 = frac{1}{2} (4)(3)^2 ] [ x_1 = 18 text{ meters} ] The final velocity after 3 seconds is: [ v_f = v_i + at_1 ] [ v_f = 0 + (4)(3) ] [ v_f = 12 text{ m/s} ] The displacement during constant speed (next 20 seconds) is: [ x_2 = v_f cdot t_2 ] [ x_2 = (12)(20) ] [ x_2 = 240 text{ meters} ] Therefore, the total distance traveled by the bicyclist is the sum of ( x_1 ) and ( x_2 ): [ x = x_1 + x_2 ] [ x = 18 + 240 ] [ x = 258 text{ meters} ] So, the bicyclist travels a total of 258 meters.

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