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describe and experiment to compare the rate of respiration of germinating seeds of two different kinds/types using the similiar apparatus ((were were germinating seeds soo u know the tube)) thanks 10 points

A uniform 290 N ladder rests against a perfectly smooth wall, making a 35.0 degree angle with the wall. find the normal force that the floor and the wall exert on the ladder. what is the friction force on the ladder at the floor. please help me. ive been at it for at least an hour and a...