A worker drags a crate across the factory floor with 25 N west pulling on a rope tied to the crate horizontally. A 13 N frictional force is making it more difficult. Identify all forces and find the net force.

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

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.