While doing a lab, a student found the density of a piece of pure aluminum to be 2.85 g/cm. The accepted value for the density of aluminum is 2.70 g/cm. What was the students percent error?

Where are the magnetic fields stronger near a bar magnet? A) Top B) Center C) Ends D) Bottom

Which of the following is a limited resource, which can take longer to be replenished than it takes to be used up?

What is the amount of electric field passing through a surface called?

What weight of water is displaced by a 100-ton floating ship? What is the buoyant force that acts on this ship?

A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An 810-kg helicopter rises from rest to a speed of 7.0 m/s in a time of 3.5 s.

What is a meat-eater

Use the diagram to answer the question. Number of Chirps per Minute Cricket 15 ° C 20 ° C 25 ° C 1 91 135 180 2 80 124 169 3 89 130 176 4 78 125 158 5 77 121 157 Average 83 127 168 Which statement indicates a reasonable conclusion based on the data

Which is an example of speed?

A very small object with mass 6.90 * 10^-9 kg and positive charge 8.30 * 10^-9 C is projected directly toward a very large insulating sheet of positive charge that has uniform surface charge density 5.90 x 10^-8 C/m^2. The object is initially 0.

How to find the energy of a wave