A 14.0 kg sled is pulled with a 28.2 N force at a 51.0° angle, across ground where uk= 0.124. What is the total force acting on the sled?

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.

When doing scientific research ,the sources used should be ?