Physics The force of friction between two surfaces will increase if: A layer of lubricant is kept between the two surfaces The two surfaces are pressed harder Air gap is created between the two surfaces Irregularities on both the surfaces are removed A layer of lubricant is kept between the two surfaces The two surfaces are pressed harder Air gap is created between the two surfaces Irregularities on both the surfaces are removed ANSWER DOWNLOAD EXAMIANS APP
Physics Rolling friction is caused by ________ Gravity Non-elastic effects Buoyancy Power dissipation Gravity Non-elastic effects Buoyancy Power dissipation ANSWER DOWNLOAD EXAMIANS APP
Physics In a railway track, two rails are joined end to end with a gap in between them because Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Steel can be saved Accidents due to contraction in winter can be avoided Accidents due to expansion in summer can be avoided Air-gaps are necessary for bearing the weight of running train Steel can be saved Accidents due to contraction in winter can be avoided ANSWER DOWNLOAD EXAMIANS APP
Physics Air coolers are more suitable for Hot and dry climate Cool and dry climate Hot and humid climate Cool and humid climate Hot and dry climate Cool and dry climate Hot and humid climate Cool and humid climate ANSWER DOWNLOAD EXAMIANS APP
Physics We feel cool when we sit near the fan, this is because Fan cools surrounding air. We feel cool when air touches the body. Air vapourises the sweat on our body. Fan gives cool air. Fan cools surrounding air. We feel cool when air touches the body. Air vapourises the sweat on our body. Fan gives cool air. ANSWER DOWNLOAD EXAMIANS APP
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