Amover pushes a 30 kg crate across a level florr with a force of 250 n, but the crate accelerates at a rate of only 5.83 m/s squared because a friction force opposes the crate's motio. what is the magnitude of the force of friction?

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

What will a positive and a negative charge do if they are separated from each other?

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.