Since it a metalloid it has metal and nonmetal properties while the rest of the group are all metals.
1. Answer;
Acceleration is;
-2.46m/s²
Explanation;
The initial velocity is 8.6 m/s, the final velocity = 0 m/s
The time is 3.5 seconds
Using the equation;
V =U + at
but V =0 , -U = at
a = -U/t = -8.6 /3.5
= -2.457 m/s²
= -2.46 m/s² (2 d.p)
2. Answer;
The distance is ;
=15.1 m
Solution;
a = -2.46 m/s², v=0 and U = 8.6 m/s
Using the equation;
V² = U² +2as (where s is the distance)
but v =0, thus, s =U²/2a
= -8.6²/ 2(-2.46)
= -73.96 /-4.92
= 15 .1 m (1 d.p)
Answer: The package appears to fall straight downward
Explanation:
When the package is dropped from the plane (which has constant speed) it will follow a parabolic path. Then, as the plane and the package have the same constant speed in the horizontal component (X component of the movement) and a constant vertical acceleration due gravity, from the plane the package will always be seen below it, falling straight downward (free fall).
This is possible if it is assumed that there are no additional horizontal forces such as air resistance, thus fulfilling Newton's 1st Law of inertia that estates if a body is in equilibrium the sum of all the forces acting on it is equal to zero.
Answer:
3
Explanation:
Applying the formula, we see that the ke gets increased 4 tines.
Explanation:
Porosity is the percentage of spaces,(hollow) within a rock or a material that can contain air or fluid. This can be used in geology( study of rocks), soil mechanics, engineering and pharmaceutics. Industrial CT scanning can be used to test for porosity of a substance. While permeability is the ability of water or other fluids to flow through a rock or material that has spaces ( that is, that are porous). This is also applicable in the fields of chemical engineering and geology.