How high would a 20 kg mass have to be raised to have a gravitational potential energy of 1,000 J?

What two particles in an atom are equal in number

Which type of radio waves have the highest frequency and are used in radar detection? a. microwaves b. x-rays waves c. infrared waves d. gamma rays

What is a transfer a wave

In what way does ocean water move globally? A. Along cold-water currents from the Poles to the equator B. From the cold Western Hemisphere to the warm Eastern Hemisphere C. From high-pressure systems to low-pressure systems D.

A bodybuilder lifts a 10 N weight a distance of 2.5 m. How much energy has the weight gained?

A container, partially filled with water, is resting on a scale that measures its weight. Suppose you place a 200 g piece of wood inside the container filled with water. What happens to the scale reading?

Which is the best analogy of a wave? -A wave is like building a ramp. -A wave is like shaking a hand. -A wave is like water rippling in a pond. -A wave is like knocking down a building.

you can produce a sound by plucking a string or by blowing in a pipe. how are these two ways of producing sound are similar

What would provide specific information about the materials in the equipment used in a certain experiment

The wavelength of sound wave is 30 m. Frequency is 7 Hz. What is the wave speed