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3 years ago

I need help... What is Torque?

Engineering

2 answers:

faust18 [17]3 years ago

8 0

Answer: a force that causes something to rotate

Explanation:

Vitek1552 [10]3 years ago

7 0

Answer:

a twisting force that tends to cause rotation

Explanation:

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Evaluate the required thickness of styrofoam for the freezer compartment in the previous problem when the inside wall is exposed

expeople1 [14]

Answer:

Evaluate the required thickness of styrofoam for the freezer compartment in the previous problem when the inside wall is exposed to air at -10°C through a surface coefficient of 16 W/m2 · K and the outer wall is exposed to 33°C air with a surface coefficient of 32 W/m2 · K. Determine the surface temperatures for this situation.

Explanation:

6 0

3 years ago

tech A says that a Hall-effect sensor can be used in an electronic ignition system. Tech B says that an optical-type sensor can

Alex

Answer:

Both Tech A and Tech B are correct.

Explanation:

The Hall effect sen sensor are used to control displacements and rotations of various body components of the vehicles, engine vibrations , and the ignition system

The optical-type sensor converts rays of light into electronic signals. It measures the quantity physically of which the translates to a form that is understandable or readable by an instrument. An optical sensor is larger part of a system that integrates light sources, a device for measuring and the optical sensor, which therefore is usually connected to an electrical trigger.

6 0

3 years ago

Forced air at T= 25ºC and V= 12 m/s is used to cool electronic elements on a circuit board. One such element is a chip, 4 mm ×4

tia_tia [17]

Answer:

The surface temperature of the chip 39.99°C

Explanation:

Assumptions

1. Steady state condition.

2. Power dissipated within the chip is lost by convection across upper surface only.

3. Chip surface is isothermal

4. The average heat transfer coefficient for the chip surface is equivalent to the local value x - L

Properties: from table. See attachment (4)

See attachment for complete solution to the problem

i had problem submitting the answer in the answer box

8 0

3 years ago

Need help with this question pls help.

lys-0071 [83]

The first one is that she’s studying

5 0

3 years ago

: The interior wall of a furnace is maintained at a temperature of 900 0C. The wall is 60 cm thick, 1 m wide, 1.5 m broad of mat

Snowcat [4.5K]

Answer:

Heat is lost at the rate of 750 J/s or W

The thermal resistance is 1 K/W

Explanation:

interior temperature $T_{2}$ = 900 °C

wall thickness t = 60 cm = 0.6 m

width = 1 m

breadth = 1.5 m

thermal conductivity k = 0.4 W/m-K

outside temperature $T_{1}$ = 150 °C

heat through the wall = ?

The area of the wall A = w x b = 1 x 1.5 = 1.5 m^2

Temperature difference $dt$ = $T_{2}$ - $T_{1}$ = 900 - 150 = 750 °C

note that $dt$ is also equal to 750 K since to convert from °C to K we'll have to add 273 to both temperature, which will still cancel out when we subtract the two temperatures.

To get the heat that escapes through the wall, we use the equation

Q = Ak $\frac{dt}{t}$

substituting values, we have

Q = 1.5 x 0.4 x $\frac{750}{0.6}$ = 750 J/s or W

Thermal resistance $R_{t}$ = $\frac{dt}{Q}$

$R_{t}$ = 750/750 = 1 K/W

7 0

3 years ago