6 The list includes six situations. • A book sliding across a table at a constant speed • A ball sitting on a shelf • A can rolling down a ramp • A swing moving back and forth • A car traveling at a constant speed of 15 m/s w • A bird landing on a branch Which objects in the list experience an unbalanced force? F) The book, the ball, and the car G) The ball, the car, and the bird H) The can, the swing, and the bird ) The book, the ball, the can, and the swing

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i think so it’s will be b yes i believe its

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.