[20+30times0],[+1=?]

20 + 30xx0 + 1 =?

If 10 times of 10th term is equal to 20 times of 20th term of an A.P. Find its 30th term.

Find the entropy increment of v = 2.0 moles of an ideal gas whose adiabatic exponent gamma = 1.30 if, as a result of a certain process, the gas volume increased alpha = 2.0 times while the pressure dropped beta = 3.0 times.

Number of significant digits in 2^(20) times 3^(5) is ( log_(10)2 =0.30 , log_(10)3 =0.4771 ).

A wave travelling along a string is described by, y(x,t) = 0.005 sin ( 80.0x - 3.0 x). In which the numerical constants are in SI units ( 0.005m, 80.0 rad m^(-1) , and 3.0 rad s^(-1) ) . Calculate (a) the amplitude , ( b) the wavelength , and (c ) the period and frequency of the wave. Also,calculate the displacement of the wave. Also, calaculate the displacement y of the wave at a distance x = 30.0 cm and time t =20s ?

If A=[(2,0),(3,0)],B=[(0,0),(1,2)],C=[(0,0),(3,4)] then

A train leaves station A at 9 : 20 am and reaches the station B at 1 : 30 pm. The time taken by the train is

A train leaves station A at 9:20 am and reaches the station B at 1 : 30 pm. The time taken by the train is