Physics When a ring of metal is heated what happens to its hole ? It expands or contracts according to its diameter It expands or contracts according to its coefficient of expansion Contracts Expands It expands or contracts according to its diameter It expands or contracts according to its coefficient of expansion Contracts Expands ANSWER DOWNLOAD EXAMIANS APP
Physics In which of the following processes is energy released ? Photosynthesis Respiration Ingestion Absorption Photosynthesis Respiration Ingestion Absorption ANSWER DOWNLOAD EXAMIANS APP
Physics A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance Varies with the increase of depth of the immersion of the iron piece Will increase Will decrease Does not change Varies with the increase of depth of the immersion of the iron piece Will increase Will decrease Does not change ANSWER DOWNLOAD EXAMIANS APP
Physics Conservation of energy refers to the fact that Energy cannot be created or destroyed but can be converted from one form to another The entropy of the universe is always increasing No chemical reaction is 100 percent efficient If you conserve energy you will not be as tired Energy cannot be created or destroyed but can be converted from one form to another The entropy of the universe is always increasing No chemical reaction is 100 percent efficient If you conserve energy you will not be as tired ANSWER DOWNLOAD EXAMIANS APP
Physics Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to: Hysteresis loss alone The heating effect of current alone Both the heating effect of current and hysteresis loss Intense sunlight at noon Hysteresis loss alone The heating effect of current alone Both the heating effect of current and hysteresis loss Intense sunlight at noon ANSWER DOWNLOAD EXAMIANS APP
Physics When a ship enters the sea from a river what will be the effect? It sways It lowers It rises a little It jolts It sways It lowers It rises a little It jolts ANSWER DOWNLOAD EXAMIANS APP
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