You short-circuit a 9 volt battery by connecting a short wire from one end of the battery to the other end. if the current in the short circuit is measured to be 18 amperes, what is the internal resistance of the battery?

You launch a ball at an angle of 35 degrees above the horizontal with an initial velocity of 38 m/s. What is the horizontal distance the ball will traveling before hitting the ground? [Must show work]

On a frictionless surface, a 32 kg student pushes a 43 kg student. If the 32 kg student slides back at 2.4 m/s, how fast will the 43 kg student be sliding and in what direction?

What is vigorous activity? A any activity or exercise performed most days of the week, preferably daily B any activity or exercise that ranges in intensity from heavy-to-maximum exertion C any activity that ranges in intensity from

You are riding your bike to the mall. You travel the first mile in ten minutes. The last mile takes you 15 minutes. This is an example of: A. Average velocity, B. Positive acceleration, C. Instantaneous speed, or D. Negative acceleration

A car with mass 615 kg drives through an Arby's parking lot. What is the weight of the car? Isn't it just w=mg So, w=615 kg x9.8 m/s^2 w = 6,027 N

The heat energy released or absorbed by a chemical reaction is generally determined by the difference between the energy that

A woman with a mass of * kg is standing on the rim of a large disk that is rotating at an angular velocity of 0.550 rev/s about an axis through its center. the disk has a mass of * kg and a radius of * m.

12. Too much socializing in the workplace can

What magnetic field strength is needed in each magnet to steer protons around the ring with a speed of 4.5 * 107 m/s? Assume that the field is uniform inside the magnet, zero outside.

The parts of a longitudinal wave that are closet together?