If you throw a ball horizontally while standing on roller skates, you roll backward with a momentum that matches that of the ball. will you roll backward if you go through the motions of throwing the ball, but instead hold on to it? explain. assuming you've answered them in terms of momentum conservation, answer them also in terms of newton's third law (or vice versa, if you answered already in terms of newton's third law).

man does not release the ball he will not back down

Explanation:

When you throw a ball we must define a system for the analysis, if we form a system formed by the ball and the pitcher, the forces that develop are internal, so the total amount of movement does not change,

        p₀ = pₙ

This implies that before the launch none had movement po is zero, so

       pₙ = 0

       m1v1 + m2 v2 = 0

       m1 v1 = m2 v2

Where index 1 is used by the pitcher and two for the ball, from this expression we see that the man receives a quantity of movement of equal magnitude than the ball that in the opposite direction.

If in the case that the man does not release the ball he will not back down because in the end the two are subject and the ball will stop

 To perform an analysis of the same problem using the third ce Newton law, when the thrower exerts a force on the ball (action), it exerts a force of equal magnitude on the man, but in the opposite direction, notice that each force is exerted on a different body so they cannot be added. This law also explains the throwback of the pitcher.

Now if the pitcher does not release the ball the two forces exist, but when the ball stops two other forces will be formed in the opposite direction that cancel the first ones, so neither of them will move

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.

so here is the information for current research:

-nrel's geothermal analysts, scientists, and engineers perform a full range of research from developing advanced methods of locating and accessing geothermal resources to exploring innovative technologies to extract and produce clean energy from the heat of the earth

and here is the information for the technology of geothermal energy:

-it's clean and sustainable

-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

-almost everywhere, the shallow ground or upper 10 feet of the earth's surface maintains a nearly constant temperature between 50° and 60°f (10° and 16°c)

-geothermal heat pumps can tap into this resource to heat and cool buildings

-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

-in the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system

-in the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger

-the heat removed from the indoor air during the summer can also be used to provide a free source of hot water