Answer:
Explanation:
Mechanical weathering types
Mechanical weathering is the breaking down of rocks into smaller pieces without changing the composition of the minerals in the rock. This can be divided into four basic types – abrasion, pressure release, thermal expansion and contraction, and crystal growth.
Answer:
The math club needs 25 uniforms for girls and 10 uniforms for boys.
Explanation:
To solve this problem we must follow every step of the statement
We raise each of the incognites:
B = boys
G = girls
The first equation:
B + G = 35
And the second equation; using the expression "there are 5 more girls than twice the number of boys in the club".
G = 2*B + 5
Now we replace in the first equation:
B + (2*B+5) = 35
B + 2*B + 5 = 35
3*B = 30
B = 10
and
G = 35 - 10
G = 25
Therefore, the math club needs 25 uniforms for girls and 10 uniforms for boys
<span>Since forces are vector quantities, we must indicate direction using positive and negative values. East will be assigned positive and west will be negative. Friction will act as a negative force since it impedes action. To calculate the net force we sum the vector quantities, as follows. Net force equals 50n which is derived by the following calculation: 300n-220n-30n.</span>
Due to the principle of conservation of energy, the work done by the engine to move the scooter converts into kinetic energy of the scooter:
where M is the combined mass of scooter and rider, and v is the velocity of the scooter. Therefore, we can find the velocity as: