Answer:
- She’s A Biochemist
- She’s An Accomplished Space Chef
- She holds the record for most time spent in a space station for an American astronaut — of any gender.
- She became the first woman to command the International Space Station twice.
- She made apple pie out of tortillas
Answer:
Fire/Flame resistant clothing and aprons
Explanation:
Individuals working with or around welding equipment are usually required to wear Fire/Flame resistant clothing and aprons which are designed to protect the user from various types of hazards including heat, fires
, burns
, and sometimes radiation. In this scenario, it would protect the individual from the welding sparks that are produced when welding, which tends to fly all over the place and can catch fire in some cases. These clothes will prevent that from happening.
Explanation:
Strengthening is the method to improve the strength of material because different type of material property requires for different requirement .Some times requires more ductility,some time requires more strength.
When impurities are mixed with the pure metal then the strength of metal will increases and this is called the strengthening of metal.
The methods of strengthening are as follows
1.Solid solution strengthening and alloying
2.Work hardening
3.Transformation hardening
4.Grain boundary strengthening
5.Precipitation hardening
Answer:Discrete system are those system which change the state at the discrete point of time and continuous system are those which have state change at continuous period of time.
Explanation:
- The major difference between discrete and continuous system is that, discrete system has state change over a discontinuous time period whereas the change of state in continuous system is over a continuous time period .
- Variations can be found in the discrete system signal but in continuous system variation cannot be found input and output signal.
- Example:-
Discrete system:-employees reporting at office at different time like
9:10am, 9:15am etc
<u> Continuous system</u>:-the water flow over a dam in particular quantity
