Its the first one: it supplies radiant energy
Answer:
the fireball flamed dangerously when moving quickly
Explanation:
im prbly wrong idk
Answer:External forces are forces caused by external agent outside of the system. Internal forces are forces exchanged by the objects in the system.
Explanation:or our purposes, we will simply say that external forces include the applied force, normal force, tension force, friction force, and air resistance force. And for our purposes, the internal forces include the gravity forces, magnetic force, electrical force, and spring force.HOPE THIS HELPS!!! ^w^
Answer:
v = 14.32 m/s
Explanation:
According to the principle of conservation of linear momentum, both the momentum and kinetic energy of the system are conserved. Since the two balls are in the same direction of motion before collision, then;
+
= (
+
) v
0.035 × 12 + 0.120 × 15 = (0.035 + 0.120) v
0.420 + 1.800 = (0.155) v
2.22 = 0.155 v
⇒ v = ![\frac{2.22}{0.155}](https://tex.z-dn.net/?f=%5Cfrac%7B2.22%7D%7B0.155%7D)
= 14.323
The velocity of the balls after collision is 14.32 m/s.
Answer:
The radius r of the metal sphere
Explanation:
Electric field,
where Q is the magnitude of the charge, R is the distance from the center of the metal sphere. Whenever the sign of the charge changes, the direction of electric field also changes. Therefore, it's only the the radius r of the metal sphere does not affect the electric field at a distance R from the center of the metal sphere when R>r