Blocks A and B, of masses ma and mb are at rest on frictionless surface, as shown above, with block a fixed to the table. Block C of mass mc is suspended by a string that is tied to block b over an ideal pulley. Which of the following gives the magnitude of the force exerted by block a on block b

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