A rigid tank contains hydrogen and has a volume of 4.1 ft³. It is initially at 87°F and 1,072 psia. Hydrogen then leaks from the tank until it is 76°F and 158 psia. How much heat transfer occurred into the tank, in Btu. Answer negative if heat left the tank.

There are 2 types of Fiber-reinforced composite material. Continuous (aligned) and discontinuous(random or aligned)
If we have aligned composite, how can we know it is discontinuous? And what is difference with random discontinuous?

Explain how Tesla, with the success of the upcoming Cybertruck, will disrupt the truck industry in terms of how trucks are manufactured and how they look.

There is an airfoil with a 3ft chord length for a small remote controlled aircraft. The lift coefficient is C = 0.59 and the pitching moment coefficient at a quarter chord length is C_m,c/4 = -0.032 for a landing spped of 45 ft/s at sea-level std conditions

a) Calculate the lift per unit span (in lbf/ft)

b) Calculate the moment about the quarter chord position per unit span

c) Calculate the moment about the leading edge per unit span

d) If the weight of this small aircraft is 76 lb, what is the wing span required

'Dynamical Similarity of Turbulent Motion'

Topic related Fluid Mechanics

I need Data related to this topic, with proper concepts .
Thank-you

When a sprinter is attempting to perform an all-out sprint as seen in the panel above, in order to maximize their linear velocity they will flex the knee more during the initial portion of the swing phase than the knee would naturally flex during this phase. This alters the moment of inertia of the leg in a way that ultimately leads to increased linear velocity of the foot at the instant before foot strike. Describe the steps in this process. 1) Define moment of inertia, and describe how it changes as the knee goes through exaggerated flexion during the swing phase. 2) Describe what effect this change has on the angular velocity of the leg about the hip through the swing phase. 3) How is the angular impulse altered about the hip, and what relationship does this have to the change in angular velocity?

A reversible heat engine operates between two reservoirs at temperatures

700

°C

푎푛푑

50

°C

.

The engine drives a reversible refrigerator which operates between reservoirs at temperatures

of

50

°C

푎푛푑

−

25

°C

. The heat transfer to the engine is 2500 KJ and the net work output of the

combined engine refrigerator plant is 400 KJ.

i)

Determine the heat transfer to the refrigerant and the net heat transfer to the reservoir

at

50

°C

ii)

Reconsider (i) above given that the efficiency of the heat engine and the COP of

the refrigerator are each 45%

of their maximum possible values

Q/ explain various Air Cargo scheduling Problems (ACSP) with examples taking any imaginary route/data of your choice.

A U- tube manometer is used to measure the pressure of oil of specific gravity 0.85 flowing in a pipe line. It is left end is connected to the pipe and right –limb id open to the atmosphere. The center of the pipe is 100 mm below the level of mercury (specific gravity =13.6) the right limb .if the difference of mercury level in the two limbs is 160 mm. determine the absolute pressure of the oil in the pipe.

1. A round composite bar is used to conduct heat. It is held at 600K at one end and 1000K at the other end but all other surfaces are insulated. The two end pieces of the bar are Stainless Steel (AISI304), and the middle piece is Copper. The length of each piece of the bar is 0.2m (total length is 0.6m) and the diameter is 0.07m. Generate an x-y plot of the temperature distribution along the center axis of the bar (plot T vs x). Select your own values for T₁ and T_2. Assume zero contact resistance between the sections.
2. Solve this problem by hand and provide a plot of the temperature distribution for the composite bar. Include your hand calculations in your deliverable. You can use equation editor or include a photo of your paper if your handwriting is tidy and the picture is properly cropped

Solid desiccant air dehumidifier systems are widely used to supply dry air for many industrial processes. As humid atmospheric air flows through the system, the water vapor in the air is adsorbed by the desiccant material, resulting in dry air leaving the system. Inlet air velocity and tekperature are observed as predominant parameters that influence the outlet conditions of the air. Consider a cylindrical air channel with a length of 1 meter and an inner diameter of 20 mm, as a representative of a dehumidifier system. The wall of the channel is made of silica powder material with a thickness of 0.2 mm. Air enters the channel at T_i = 30°C and 10 m/s. Heated air is forced to flow over the entire channel so that it could provide a constant inner surface temperature, T_s,i of 60°C. Determine,

i. the exit air temperature of the channel, T_e, ^oC

ii. the rate of heat transfer, and

iii. the outer surface temperature of the channel, T_s,o, ^oC.

Evaluate the air properties at a bulk mean temperature of 40°C

B- For design of a car suspension system, what type of vibrational system you would choose (over damped, under damped, critical damped) and why (bring 2 reasons for your selection)?

C- For design of an office door stopper system, what type of vibrational system you would choose (over damped, under damped, critical damped) and why (bring 2 reasons for your selection)?

Crude oil of specific gravity (0.75) is flowing through a pipe. The pipe has a diameter of 100 mm and 50 mm at the sections 1 and 2 respectively. The velocity of crude oil at the section 1 is 550 cm/s. The   section 1 is 3000 mm and section 2 is 2000 mm above the datum. If the pressure at the section 1 is 0.2 N/mm², find the intensity of pressure at section 2?