Viewed Questions
The process of a protein folding from an inactive unfolded structure to the active folded structure can be represented by the following equation: $$ \text { unfolded protein } \rightleftharpoons \text { folded protein } $$ (c) At what temperature would the ratio of unfolded protein to folded protein be $1: 5 ?$ The values of $\Delta H^{\circ}$ and $\Delta S^{\circ}$ for the folding of the protein lysozyme are: $$ \begin{aligned} \Delta H^{\circ} &=-280 \mathrm{~kJ} / \mathrm{mol} \\ \Delta S^{\circ} &=-790 \mathrm{~J} / \mathrm{mol} \cdot \mathrm{K} \end{aligned} $$ (a) Calculate the value of $\Delta G^{\circ}$ for the folding of lysozyme at $25^{\circ} \mathrm{C}$. (b) At what temperature would you expect the unfolding of lysozyme to become favorable?
An organic compound A contains $40.66 \%$ C. $23.72 \% \mathrm{N}$ and $8.53 \%$ H. The compound also contains oxygen. Determine the empirical formula of the compound. The molecular mass of $\mathbf{A}$ is 59.07 What is its molecular formula?
The bent rod has a mass of $2 \mathrm{kg} / \mathrm{m}$. If it is released from rest in the position shown, determine its initial angular acceleration and the horizontal and vertical components of reaction at $A$
The girl has a mass of 40 kg and center of mass at $G$ If she is swinging to a maximum height defined by $\theta=60^{\circ}$ determine the force developed along each of the four supporting posts such as $A B$ at the instant $\theta=0^{\circ} .$ The swing is centrally located between the posts.
Questions asked
Penny Riley
Numerade educator
1. Wind is blowing in from the garage door with the dimensions of 2,1x3,0 m, at a speed of 5 m/s according to the Figure 1. Determine the average velocity V through the two 1,2x1,0 m V V 1.0 m 1.0 m 5,0m 5 m/s 3,0 m 30" 6,7m Figure 1. Problem 1
A fan has a bladed rotor of 0.3m outside diameter and 0.1m inside diameter and runs at 2000 rpm. The width of the rotor blades is 30mm from blade inlet to outlet. The flow rate is 0.20 m3/s and the absolute velocity of the air at blade inlet, 𝑉 , is purely radial. The blade discharge angle is 1 30° measured with respect to the tangential direction at the outside diameter of the rotor. A) What would be a reasonable blade inlet angle (measured with respect to the tangential direction at the inside diameter of the rotor) ? B) Find the power to run the fan, when the fluid is air with density of 1.23 kg/m3.
Block A with mass m is lifted using the motor and pulley system shown. For point B on the cable vB=0 at t=0.Power to the motor is increased such that vB=β where β is a positive constant. a) Draw the free body diagram for A b) Write the equation of motion for block A C) Write the compatibility equation between sA and sB. D) What is the tension in the cable at t=5 seconds.
the airplane travels in a straight path with an acceleration described by the graph. At time t=, s=i=0 A)contruct the v-s graph? b)what is the acceleration at s=15m c)what is the acceleration at s=15m d) what is the velocity at s = 150 m
Sam Stansfield
1. The chessboard has 8x8 squares. Put 1 grain of rice in the firstecond, four in the third, 8 in the next, then 16 and always double the amount in the next. How many grains are there in the last square? 2.How many pieces are there in total on the chessboard of the previous task? 3. The volume of one grain of rice is about 5mm³. If the grains of rice from the previous task are piled on top of a chessboard in a pyramid whose walls have an inclination of 450, how big a chessboard is needed? 4. If the rice grains from the previous tasks were stored in a spherical container, what would be the radius of the sphere? 5. If the container were a cube, what would be the length of its side?
The picture shows a typical test piece used in the tensile test of polymers (dimensions are in etc.). Below is also the force/strain graph given by the polymer material \( X \) in the tensile test A) Calculate the yield strength of material \( X \) B) Calculate the Young's modulus of the material \( X \). C) What can you conclude from the morphology and glass transition temperature of material X. justify NOTE: For calculations, you should make some estimates from the graph
Lien Le
Carson Merrill
5. The chessboard has 8x8 squares. Put 1 grain of rice in the first square, two in the second, four in the third, 8 in the next, then 16 and always double the amount in the next. How many grains are there in the last square? 6. How many pieces are there in total on the chessboard of the previous task? 7. The volume of one grain of rice is about 5mm³. If the grains of rice from the previous task are piled on top of a chessboard in a pyramid whose walls have an inclination of 45°, how big a chessboard is needed? 8. If the rice grains from the previous tasks were stored in a spherical container, what would be the radius of the sphere? 9. If the container were a cube, what would be the length of its side? 10. Is the rice good? What about macaroni? By what percentage will they improve if you season them with curry? 11. Solve the equation: (x+3)(x-5)= 0. 12. Solve the equation: x2 - 2x - 15 = 0. Hint: Subtract the parentheses from the previous task.
Gregory Higby
1. The chessboard has 8x8 squares. Put 1 grain of rice in the firstecond, four in the third, 8 in the next, then 16 and always double the amount in the next. How many grains are there in the last square? 2.How many pieces are there in total on the chessboard of the previous task?
Rachel Gore
The chessboard has 8x8 squares. Put 1 grain of rice in the firstecond, four in the third, 8 in the next, then 16 and always double the amount in the next. How many grains are there in the last square?
