Answer:
The speed of the plane before the collision is 12.6 m/s.
Explanation:
Let us get some things clear first.
The drone is hovering <em>stationary</em> at an altitude of 11.3 m, which means its velocity is zero. Furthermore, after the collision the two aircraft are stuck together and <em>move east at an altitude of 11.3 m</em>, which means their velocity has no vertical component because if it had their altitude would have changed.
The law of conservation of momentum says that
.
where and .
Since <em>(the drone is hovering stationary)</em>, and <em>(the aircraft are stuck together),</em> we have
Thus, the speed of the plane prior to the collision is 12.6 m/s.
Metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock.
Answer:
Explanation:
None of the other answers matter but the right answer which A. Silicon has an outer shell of 4. Carbon can connect with 4 elements because of its outer shell. CH4 is the simplest example. But C2H6 is also possible.
H H
H - C - C - H
H H
There are 4 connections to the outside world for the Carbon (C) on the left.
It has 3 hydrogens connected on to it and one of its connecting electrons goes with the other carbon on the right.
Silicon can do the same thing.
why was my answer taken off? There is no way to show evidence for this but ig I can explain. The electrical energy is what is used to power the radio so it works, then the energy is used to catch radio waves which makes sound energy. So the answer is C, electrical energy to sound energy
Answer:
both technicians
Explanation:
parts of a machine that move against themselves need to be lubricated to reduce friction and heating in the system.
since friction causes heating and wearing away of parts, it is important to lubricate them.
engine bearings move against themselves, because the teeth on one moves another