4.40 .. cp two blocks connected by a light horizontal rope sit at rest on a horizontal, frictionless surface. block a has mass 15.0 kg, and block b has mass m. a constant horizontal force f = 60.0 n is applied to block a (fig. p4.40). in the first 5.00 s after the force is applied, block a moves 18.0 m to the right. (a) while the blocks are moving, what is the tension t in the rope that connects the two blocks? (b) what is the mass of block b?

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.

An object has a weight of 500 on earth what is the mass of this object

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?