Consider a vertical plate of dimension 0.25 m × 0.3 m that is at Ts= 90°C...

Consider a vertical plate of dimension 0.25 m × 0.3 m that is at Ts= 90°C in a quiescent environment at ?T?= 20°C. In the interest of minimizing heat transfer from the plate, which orientation, (A) or (B), is preferred? What is the convection heat transfer from the front surface of the plate when it is in the preferred orientation? Evaluate the properties of air at the film temperature.

Determine the convection heat transfer from the front surface of the plate when it is in the preferred orientation, in W.

Expert Solution

samet mamat answered 2 years ago

A person with a mass of 90 kg performs a vertical jump on a force plate....

A person with a mass of 90 kg performs a vertical jump on a force plate. During the initial phase of the countermovement, vertical force is 540 N for 0.234 s. Then the force is increased to 1553 N and stays at that value until the jumper leaves the ground. At what point in time (s), referenced from the initial point of the countermovement, does the person reach the bottom of the movement? Prior to initiation of the countermovement, the...

Ethylene glycol at 40 degree C flows along a heated vertical plate L = 0.5 m...

Ethylene glycol at 40 degree C flows along a heated vertical plate L = 0.5 m long and is maintained at a uniform temperature of 80 degree C. Determine the minimum flow velocity below which the effect of free convection on heat transfer becomes more than 5 percent. (For ethylene glycol take Pr = 50.)

Heat Q5 A vertical flat plate (1.5 m) height and (1 m) width ,with uniform temperature...

Heat Q5 A vertical flat plate (1.5 m) height and (1 m) width ,with uniform temperature (120 oC) one face of this plate expressed to the air with the velocity (6 m/s) to the up direction, the second face expressed to the static air ,the temperature of the air with two side (30oC) . Calculate the heat losses from the plate. The properties of the air at (75 oC),[ ρ=0.998 kg/m3 .Cp=1.009 kJ/kg.oC, υ =2.076 *10-5 m 2 /s ,...

Consider the following hypotheses. Upper H0: p≤0.25 Upper H1: p>0.25 Given that p=0.3, n=110, and α=0.05...

Consider the following hypotheses. Upper H0: p≤0.25 Upper H1: p>0.25 Given that p=0.3, n=110, and α=0.05 answer the following questions. a. What conclusion should be drawn? b. Determine the p-value for this test.

A mass of 0.3 kg hangs motionless from a vertical spring whose length is 1.05 m...

A mass of 0.3 kg hangs motionless from a vertical spring whose length is 1.05 m and whose unstretched length is 0.40 m. Next the mass is pulled down to where the spring has a length of 1.30 m and given an initial speed upwards of 1.9 m/s. What is the maximum length of the spring during the motion that follows?

A mass of 0.3 kg hangs motionless from a vertical spring whose length is 0.88 m...

A mass of 0.3 kg hangs motionless from a vertical spring whose length is 0.88 m and whose unstretched length is 0.48 m. Next the mass is pulled down to where the spring has a length of 1.08 m and given an initial speed upwards of 1.9 m/s. What is the maximum length of the spring during the motion that follows?

Consider the titration of 70 ml of 0.25 M hydrazine, N2H4 titrated with 0.35 M HBr....

Consider the titration of 70 ml of 0.25 M hydrazine, N2H4 titrated with 0.35 M HBr. ( Kb= 1.3 x 10-6). A. Write the reaction equation for above reaction. B. Calculate the volume of HBr required to reach the end point. C. Caculate the pH before addition of any acid. D. Calculate pH after addition of 20 mL of HBrI. E. Caculate pH after addition of 25 mL of HBr. F. Caculate pH at the end point. G. Calculate pH...

Consider 0.25 M solutions of the following salts. For each salt, indicate whether the solution is...

Consider 0.25 M solutions of the following salts. For each salt, indicate whether the solution is acidic, basic, or neutral. basic neutral acidic CsF basic neutral acidic NaCl basic neutral acidic C2H5NH3NO3 basic neutral acidic H2NNH3Cl basic neutral acidic CsNO3 basic neutral acidic RbOCl

Consider the following solutions: Solution 1: 0.100 L of 0.25 M NaCH3CO2 + 0.050 L of...

Consider the following solutions: Solution 1: 0.100 L of 0.25 M NaCH3CO2 + 0.050 L of 0.25 M HCl Solution 2: 0.100 L of 0.25 M HCH3CO2 + 0.050 L of 0.25 M NaOH What is the pH of Solution 1 after adding 4.4 mmol of strong base? What is the pH of Solution 2 after adding 4.4 mmol of strong base?

7. Consider the following scenario: • Let P(C) = 0.2 • Let P(D) = 0.3 •...

7. Consider the following scenario: • Let P(C) = 0.2 • Let P(D) = 0.3 • Let P(C | D) = 0.4 Part (a) Find P(C AND D). Part (b) Are C and D mutually exclusive? Why or why not?C and D are not mutually exclusive because P(C) + P(D) ≠ 1 .C and D are mutually exclusive because they have different probabilities. C and D are not mutually exclusive because P(C AND D) ≠ 0 .There is not enough...

Question