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Physics
The ratio of Earth’s orbital angular momentum (about the sun) to its mass is 4.4x10¹⁵m²/s. The area enclosed by Earth’s orbit approximately ………. m².
Chemistry
How can the following reaction be made to proceed in toward direction? B(OH)₃ + NaOH NaBO₂ + Na[B(OH)₄] + H₂O (a) addition of borax (b) addition of cis 1, 2 diol (c) addition of Na₂HPO₄ (d) addition of trans 1, 2 diol
Mathematics
If r, s, t are prime numbers and p, q are two positive integers such that lcm (p, q) = r² s⁴ t², then the number of ordered pairs (p, q) is (a) 225 (b) 224 (c) 248 (d) 255