Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. For a solid to change to a liquid, matter must absorb energy from its surroundings.
Answer:
Tungsten wire is used as the filament in light bulbs. It glows white-hot as current passes through it.
Tungsten is used in light bulbs because its high <u>RESISTANCE</u> converts electric energy into light and heat.
Explanation:
J.J. Thomson discovered the electron, leading to the Plum Pudding model
The motion of the football that is being kicked follows a projectile path and is parabolic in shape. It has a maximum height of meters and the angle with respect to the ground is degrees. The maximum height is the highest position vertically that the ball could reach. From the equations of an object in a projectile motion, we use the equation <span>(V*sin20)^2 = 2gh in order to solve for velocity, V. We do as follows:
</span><span>((V) (sin(20)))^2 = 2gh
(V^2) (0.342^2) = 92.12
V = √ (92.12 / 0.342^2)
V = 28.06 m/s
</span>The initial velocity of the kick would be 28.06 m/s.
