Physics It is easier to roll a barrel full of coal tar than to pull it because coal tar is a liquid and it flows in the barrel when it is rolled the rolling friction is much less than the sliding friction more surface area of the barrel is in contact with the road when it is pulled the full weight of the barrel comes into play when it is pulled coal tar is a liquid and it flows in the barrel when it is rolled the rolling friction is much less than the sliding friction more surface area of the barrel is in contact with the road when it is pulled the full weight of the barrel comes into play when it is pulled ANSWER DOWNLOAD EXAMIANS APP
Physics Electrons carry a Neutral Charge Negative Charge Positive Charge Variable Charge Neutral Charge Negative Charge Positive Charge Variable Charge ANSWER DOWNLOAD EXAMIANS APP
Physics A gas thermometer is more sensitive than a liquid thermometer because a gas : Does not change state easily Expands more than a liquid Is easy to obtain Is lighter than liquid Does not change state easily Expands more than a liquid Is easy to obtain Is lighter than liquid ANSWER DOWNLOAD EXAMIANS APP
Physics Should cars have bumpers that collapse under impact? No, since it would be very expensive to get the car repaired Yes, since they help to absorb the impact of a collision and keep the occupants safe No, since the colliding car would then ram into the occupants and kill them Yes, since the offending car should get damaged and pay for the mistake No, since it would be very expensive to get the car repaired Yes, since they help to absorb the impact of a collision and keep the occupants safe No, since the colliding car would then ram into the occupants and kill them Yes, since the offending car should get damaged and pay for the mistake ANSWER DOWNLOAD EXAMIANS APP
Physics The sound produced by a bat is– Ultrasonic Infrasonic Subsonic Audible Ultrasonic Infrasonic Subsonic Audible ANSWER DOWNLOAD EXAMIANS APP
Physics Intensity of any wave is proportional to which of the following? Amplitude Cube of amplitude Square root of amplitude Square of amplitude Amplitude Cube of amplitude Square root of amplitude Square of amplitude ANSWER DOWNLOAD EXAMIANS APP
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