The economy of as _____ country is based on dual system. (undeveloped, developing, developed)​

Answer:

false

When iron filings and sulphur powder are mixed, both retain their properties. It means they have not undergone any chemical reaction. Therefore, mixing of iron and sulphur is a physical change.

When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and form ferrous sulphide (FeS). It is a new substance which has properties entirely different from Fe and S.Therefore, heating of mixture of iron and sulphur powder is a chemical change.

Behaviour towards a magnet---Iron filings cling to magnet.No particle attaches to magnet.

Answer:

Answer is False...

Explanation:

When iron filings and sulphur powder are mixed, both retain their properties. It means they have not undergone any chemical reaction. Therefore, mixing of iron and sulphur is a physical change.

When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and form ferrous sulphide (FeS). It is a new substance which has properties entirely different from Fe and S.Therefore, heating of mixture of iron and sulphur powder is a chemical change.

Behaviour towards a magnet---Iron filings cling to magnet.No particle attaches to magnet.

_________course is about operating the aircraft in air. *

Answer 4.None of these

2. Aeronautical engineering

• Aerospace engineering is the number one subject of engineering involved with the improvement of planes and spacecraft.

• Aeronautical Engineering is the technological know-how concerned with the study, layout, and manufacture of flight-successful machines or the strategies of running planes. This path trains an engineer in designing, constructing, studying and trying out of business or navy aircraft, missiles, and spacecraft. Aerospace engineers are chargeable for the research, layout and manufacturing of plane, spacecraft, aerospace equipment, satellites and missiles. They additionally increase new technology in business aviation, protection systems, and area exploration.

What does an Aeronautical Engineer do?

• Aeronautical engineers layout, increase, test, and assist manufacture business and navy planes, missiles, and spacecraft.
• Aeronautical engineers additionally increase and layout notable technology such as supersonic jets, helicopters, area shuttles, satellites and rockets.
• Work performed via way of means of aerospace engineers has made things like rapid mail transport and moon tour possible.
• Aerospace Engineers are running to release an area trip to attain the moon.

Answer:

Leghemoglobin

Explanation:

The nodules appear pink in colour due to the presence of Leghemoglobin which is an iron-containing pigment pink in colour. The pigment is used to scavenge oxygen for the functioning of the enzyme nitrogenase in nitrogen fixation.

Answer:

Correct option is B)

length = 5m = l

phi = 30 degrees

30 * pi/180 = pi/6 * r * a * d l*theta = r*phi

5(theta) = 10 ^ - 3 6

theta = 10 ^ - 3 * (pi/30) = 10 ^ - 1 * (3.14/3) * r * a * d

=(1.04667)*10^ -4 × (180)

=59.9697*10^ -4 *60 m

=0.3598 sec approx0.36

Answer:

Angle of shear is 7.85 x 10-4 radians on the surface. (