if i push a box across a carpeted floor and a smooth marble floor why is it easier to push the box on the marble floor

What is the minimum work needed to push a 920-kg car 310 m up along a 6.5 ∘incline? Ignore friction. Express your answer using two significant figures.

Which of the following procedures was done to minimize human error? We let the weight swing 25 times and divided by 25 to get the avg period of one oscillation Why did we plot T2 vs L instead of just T vs L?

Which statement correctly relates science and its influence on society? a) Science can neither solve societal problems nor influence societal decisions. b) Science can solve societal problems, and it can affect societal decisions.

Currents during lightning strikes can be up to 50000 A (or more!). We can model such a strike as a 47500 A vertical current perpendicular to the earth's magnetic field, which is about 12 gauss. a.

Do equal volumes of water have equal weights? Explan your reasoning.

What element has the lowest electronegavity?

Identify two different ways you can make a yellow spotlight for a theater stage

Ian walks 2 km to his best friend's house, then walks 0.5 km to the library. He then makes a 2.5 km walk home. The entire walk took him 3 hours. What is his average speed in km/h? SHOW YOUR WORK!

What would happen if earth gravity suddenly disappeared?

How many layers of material were the roads made of? a. two c. four b. three d. five