Name an object that is mostly transparent, one that is translucent, one that is mostly absorbent, an one that is mostly reflective.

At what age can a person begin taking actions that will reduce the risk of dementia

A coiled up wire carrying a current is called what?

An object that is moving will stop moving when A. something pushes or pulls it to a stop. B. it has stopped speeding up. C. the force that is making it move stops pushing it. D. it has used up all its momentum.

You pull your sled through the snow a distance of 500 meters with a horizontal force of 200 newtons. How much work did you do?

A rope exerts a 280 N force while pulling an 80 Kg skier upward along a hill inclined at 12o. The rope pulls parallel to the hill. The coefficient of friction between the skier and the hill is 0.15.

Question 1 [7] Hydrogen gas is used in a Carnot cycle having an efficiency of 60% with a low temperature of 300K. During the heat rejection the pressure changes from 90 kPa to 120 kPa.

Technician A says a pull to the right during braking could be caused by a defective metering valve. Technician B says a pull to the left could be caused by a defective proportioning valve. Which technician is correct

Can Radiation transfers energy by moving matter.

Which of the following decreases the dissolving rate of a solid in water?

Why might a plant that normally grows in one environment not grow well in a different environment?