Question

a spherical raindrop evaporates at rate proportional to surface area radius origanally was 3 mm and 1 hr later it has been reduced to 2 mm .find expression for radius of raindrop at any time t ...... answer nhi aata to "sry bro idk answer mat likhna " nhi aata to mat likh kuch​

Answer 1

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A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle.