Waves transfer Question 10 options: energy matter density heat

its not heat or density

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

Looking at this barometer, is the air pressure high or low? what type of weather would you expect? high, bad low, bad high, good low, good

It is advised not to hold the thermometer by the bulb while reading it