Birds cause a lot of damage to airplanes every year. To study this problem, the U. S. Air Force invented a chicken cannon. Air Force scientists use the cannon to shoot chicken bodies at airplanes in controlled tests. Then they analyze the damage the chicken bodies caused. Evaluate this model. In what way do you think it is helpful? What are some of its limitations?

specific latent heat of fusion, lf, of a substance is defined as the amount of heat required to change a unit mass of the substance from solid to liquid state, without any change in the temperature.

explanation:

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.