Answer:
Explanation:
Hi!
In a (x, y) coordinate representation, the two forces are:
The sum of the two forces is:
The angle to x-axis is calculated using arctan:
The magnitude is:
Answer:
make the child walk by itself
Explanation:
duh
Answer:
A. Underground coal mining is dangerous because of possible tunnel collapse and possible methane gas explosions.
Explanation:
Dangers of underground coal mining include asphyxiation, methane gas poisoning, tunnel collapse and explosions of methane gas, a highly flammable gas. Methane explosions occur since this gas is a byproduct of coal. This explosion can cause tunnel collapse.