Ahydraulic jack is used to lift a car in order to change a tire. the car exerts a force of 9,800 n toward the ground due to the force of gravity. to begin to lift the car, a hydraulic jack must produce of force. to keep the car in position once it is lifted, the jack must produce of force.

What color of light must blue light mix with to create white light? a. yellow b. white c. blue d. green

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

How does an observation about an object differ from an inference about that object