The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project?
Options: Robert Oppenheimer, James B. Conant, Leslie R. Groves, Vannevar Bush
Options: directly elected by the people on the basis of universal adult franchise, elected by the members of the state legislative assemblies, elected by the members of the state legislative councils, elected by the members of the state legislative councils and state legislative assemblies
Options: when the bowler bowls out three batsman with three successive balls, when the batsman intercepts the ball with his leg or any part of his body between the wicket, when the batsman, while hitting the ball, strikes his own wicket with his bat or body and is declared out, None of the above
Options: the period in which the moon completes an orbit around the earth, the period in which the moon completes an orbit around the earth and returns to the same positions in the sky, the period of rotation of moon, None of the above
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
Options: work done in rolling is more than in lifting, work done in lifting the stone is equal to rolling it, work done in both is same but the rate of doing work is less in rolling, work done in rolling a stone is less than in lifting it