<span> Uniform chemical composition
Solid
Crystalline structure </span>these are the characteristics of minerals
Answer:
Because there's buoyancy force
Explanation:
What is wrong here is that he assumes that gravity is the only force affecting the weight of the balloon on the scale here. In reality there's also buoyancy force which lifts the full blown balloon upwards.
A better type of container would be an air tank where its volume does not change when it's empty and when it's full of air.
Answer:
Zero
Explanation:
Work done is given by multiplying force and distance moved. The distance is moved both positive and negative and it's equal distance. Since force used is the same hence work
W=F*d+ (F*-d)=0
Therefore, total work done is zero
Answer:
If the force applied is larger than 185.2 N, yes.
Explanation:
In order to move the table, the pushing force must be larger than the frictional force. The frictional force is given by:

where
is the coefficient of static friction
is the mass of the table
is the gravitational acceleration
Substituting,

So, we are able to move the table if we push with a force larger than 185.2 N.
Answer:
a = 1600 m / s²
Explanation:
For this exercise we use the kinematics relations,
v² = v₀² + 2 a x
where v₀ is the initial velocity of the bullet, which as part of rest is zero, for the distance (x) we can assume that the gases accelerate along the entire trajectory of the cannon x = 2m
a = 
let's calculate
a =
a = 1600 m / s²