Solve the following roblems. (9.) A crow bar of length 2 m is used to lift a stone of weight 200 kg. If the fulcrum is set 50 cm apart from the stone, how much effort should be applied to the other end of the crowbar to balance it? ​

When an object is heated it contracts. a. true b. false

According to valence bond theory, which orbitals overlap in the formation of the bond in hf according to valence bond theory, which orbitals overlap in the formation of the bond in hf 2s on h and 2p on f 1s on h and 2s on f 1s on h and 1p on f 1s on h and 2p on f 1s on h and 3p on f

The process of predicting values that extend beyond the range of data points is called absolute value extrapolation interpolation prediction for any given: )