You hold a 4.0-\({\rm kg}\) computer. Determine the magnitude of the torque exerted on your forearm about the elbow joint caused by the downward force exerted by the computer on the forearm. Let the distance between the center of mass of the computer and your elbow joint be 0.25 \({\rm m}\). Ignore the mass of the arm.

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?