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