Science Part 1
science maharashtra board 10th
- What is the speed of light divided by mass? The speed of light divided by mass does not have a specific physical meaning or a commonly used unit in physics. It is not a meaningful quan... 1
- An electric iron of 600 W is operated for 1 hrs daily. What will be the electrical consumption expenses Sure, here is the complete solution with the given information, calculation steps, and final answer: Given: Power of electric iron = 600 W T... 2
- How to convert 20.1741 to 2.02 20.1741 = 20.17 =20.2 {rounding of to nearest number} then it can be = 20.2 and 2.02 x 10 1
- Group and electronic configuration Answer: Elements in the same group of the modern periodic table have the same number of valence electrons, i.e. the same outermost electroni... 1
- What is the weight on mars To find out the weights of five friends on the moon and Mars, we need to first understand how the weight of an object changes in different g... 2
- Explain the term earth gravitational force The term "Earth gravitational force" refers to the force that pulls objects towards the Earth. It's the reason things fall when you drop the... 1
- Weight of the person on the mars Person on Mars would weigh 37.83% its weight on earth. 1
- If the height of a satellite completing one revolution around the earth in T seconds is h1 meter, Time period of the satellite is given as T = frac2π(R+h)^(3/2)√(GM) When the height of the satellite is h₁, it takes T time to revolve aroun... 1
- How much time a satellite in an orbit at height 35780 km above earth’s surface would take Given: Height of the satellite, h = 35780 km = 35.78×10⁶m Let the original mass of Earth be M. Then its new mass M’ will be 4M. ∴ M’= 4×6×10... 1
- If mass of a planet is eight times the mass of the earth and its radius is twice the radius of the earth, what will be the escape velocity for that planet? Correct answer is 22.4 km/s https://youtu.be/JewcniYEVsY 1
- Complete the following table IRNSS Weather study & predict Earth’s observation read in image 1
- Why it is beneficial to use satellite launch vehicles made of more than one stage? The major portion of weight in satellite launch vehicles is contributed by fuel. Thus, vehicles have to carry a large weight of fuel during... 1
- What is meant by satellite launch vehicles? Explain a satellite launch vehicle developed by ISRO with the help of a schematic diagram. A rocket used to carry an artificial satellite to a desired height above the earth's surface and then project it with a proper velocity so t... 1
- Why are geostationary satellites not useful for studies of polar regions? The geostationary satellites orbit above the equator or in equator plane, these satellites can’t fly over the polar regions. Also these sate... 1
- What is meant by the orbit of a satellite? On what basis and how are the orbits of artificial satellites classified? Orbit of a satellite Is its path around the earth. Orbits of artificial satellites can be classified on various basis. On the basis of the a... 1
- What is meant by an artificial satellite? How are the satellites classified based on their functions? A man made object revolving around the earth or any other planet in a fixed orbit is known as artificial satellites. Based on their function... 1
- State with reasons whether the following sentences are true or false a. If a spacecraft has to be sent away from A) If a spacecraft has to be sent away from the influence of earth’s gravitational field, its velocity must be less than the escape velocity... 2
- Fill in the blanks and explain the statements with reasoning: a. If the height of the orbit of a satellite from the earth surface Answer:1: If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will decre... 1
- What is a catalyst ? Write any one reaction which is brought about by use of catalyst ? A catalyst is a substance that changes (usually increases) the rate of a chemical reaction without itself undergoing any permanent chemical... 1
- What is meant by vinegar and gasohol? What are their uses ? Vinegar is a dilute (about 5–8%) solution of acetic acid (ethanoic acid) in water; gasohol is a mixture of petrol (gasoline) and ethanol use... 1
- Give names of three natural polymers. Write the place of their occurrance and names of monomers from which they are formed. Three natural polymers are starch, cellulose and proteins. Natural polymerWhere it occursMonomer StarchStored food in plants: grains (rice,... 1
- Give names of three functional groups containing three different hetero atoms. Write name and structural formula of one example each. Three functional groups with three different heteroatoms: halo (halogen), alcohol (oxygen) and amine (nitrogen). HeteroatomFunctional groupE... 1
- Give any four functional groups containing oxygen as the heteroatom in it. Write name and structural formula of one example each. Four functional groups with oxygen as the heteroatom: alcohol, aldehyde, ketone and carboxylic acid. Functional groupExampleStructural formu... 1
- Saturated hydrocarbons are classified into three types. Write these names giving one example each Saturated hydrocarbons are of three types: straight chain, branched chain and cyclic. Straight chain hydrocarbons: carbon atoms are joined o... 1