Adrop of blood is discovered at a crime scene. in order to determine if it is human blood, the forensic investigator performed the precipitin test using "anti-human antibodies from a rabbit. the sample coagulates. what origin is the sample from? a) cat b) dog c) human d) rabbit

Explain in physical terms how a microwave oven works. what would happen when you put a conductor in the microwave oven? explain.

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.