Protons are what charged and electrons are what charged

You then decide to throw another disc to your friend in the tree for fun. If you throw the disc at a speed of 10 m/s and your friend catches it 5.0 m above you, what was the speed of the disc just before your friend catches it

Global climate change has caused ocean temperatures to increase. Which evidence supports this claim? Arctic sea ice now covers a larger portion of the northern waters. Currents that carry plankton are much more stable than in the past.

A sound wave has a frequency of 619 Hz in air and a wavelength of 0.51 m. What is the temperature of the air? Assume the velocity of sound at 0◦C is 335 m/s.

Walking across a carpet is an example of charge being transferred by

Which of the following can only be dual sports? A. Paddleball B. Table tennis C. Racquetball D. Beach volleyball

Noah Formula is in an airplane which is flying at constant speed in a circular course of radius 6500 m, circling O'Hare's airplane prior to landing. Noah observed that the plane completes each round trip in 345 seconds (5 minutes & 45 seconds).

Two pieces of metal with exactly the same mass are placed on a surface in bright sunlight. The temperature of the 1st block increases by 3°C while the temperature of the 2nd increases by 8°C. If the specific heat of the 2nd block is 0.

The correctly balanced equation for H202 - H2O + O, is A) H202 - 2H2O + O2 B) H302 - H20+20, C) 2H, 02 - - 4H20 + 0, D) 2H, 02 - 2H30 + 0,

What happens to the wavelength of a wave if you increase the frequency?

In a transverse wave, the particle motion is what to wave motion? A. perpendicular B. parallel