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3 years ago

Explain why Didymos B is an ideal asteroid for testing the DART system.

Engineering

1 answer:

Yanka [14]3 years ago

8 0

Answer:

Rhe fact that Didymos B is in orbit around Didymos A makes it easier to see the results of the impact, and ensures that the experiment doesn't change the orbit of the pair around the sun.” After launch, DART would fly to Didymos, and use an on-board autonomous targeting system to aim itself at Didymos B

Explanation:

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What is Geography? pliz help

UkoKoshka [18]

Answer:

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3 years ago

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A chemical process stream enters a shell-and-tube exchanger at a temperature of 200.0°Fand does two passes on the shell side, ex

ikadub [295]

Answer:

a) Decrease

b) Decrease

c) Decrease

d) Decrease

Explanation:

Ti= 200°F ,

Te = 170°F

Area of heat exchanger = $\pi *(2 )* 10$ = 20π

A) when The flow rate of the cooling fluid is increased

Temperature of process stream will decrease and this is because the tube side heat transfer coefficient will increase and this will increase the rate of heat transfer thereby decreasing the temperature of the process stream.

B) when There are 200 tubes that are 1.0-in. OD and 20.0ft long

The temperature of the process stream will decrease and this is because the heat transfer coefficient will increase likewise the heat transfer rate

C) When The number of shell passes is doubled

This will cause an increase in the overall length of the shell, an increase in velocity of constant volumetric flowrate, hence the Temperature of the process steam will decrease as well

D) When The tube material is changed to copper.

Due to the high thermal conductivity of copper when compared to steel , switching to copper will cause a decrease in the temperature of the process steam

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3 years ago

What is a jack plane used for

kolezko [41]

A jack plane is a general purpose woodworking bench plane, used for dressing timber down to the correct size in preparation for truing and/or edge jointing.

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3 years ago

The inverted U-tube is used to measure the pressure difference between two points A and B in an inclined pipeline through which

JulijaS [17]

Answer:

i) 0.610 m or 610 mm

ii) 0.4 m or 400 mm

Explanation:

The pressure difference between the pipes is

a) Air

Pa + πha +Ha = Pb + πhb +Hb

Pa - Pb = π(hb-ha) + Hb-Ha

Relative density of air = 1.2754 kg /m3

Pa - Pb = 1.2754 * 0.4 + (0.3-0.2) = 0.610 m or 610 mm

b) paraffin of relative density of 0.75

Pa - Pb = π(hb-ha) + Hb-Ha

Pa - Pb = 0.75 * 0.4 + (0.3-0.2) = 0.4 m or 400 mm

8 0

3 years ago

In an aligned and continuous carbon fiber-reinforced nylon 6,6 composite, the fibers are to carry 97% of a load applied in the l

Juli2301 [7.4K]

Answer:

a) 0.26

b) 1077 MPa

Explanation:

a) The following equation can be used to determine the volume fraction:

$\frac{F_f}{F_m} =\frac{E_fV_f}{E_m(1-V_f)}$

$\frac{0.97}{1-0.97} =\frac{260V_f}{2.8(1-V_f)}$

$32.3 = \frac{260V_f}{2.8-2.8V_f}$

$V_f = 0.26$

b) Tensile strength can be found by using the following equation:

$\sigma_{cl} = \sigma_m(1-V_f)+\sigma_fV_f = 50*(1-0.26)+4000*0.26 = 1077$ MPa

5 0

4 years ago

Explain why Didymos B is an ideal asteroid for testing the DART system.​

Explain why Didymos B is an ideal asteroid for testing the DART system.