Answer:
0.25hr
Explanation:
Given parameters:
Distance = 200km
Time = 2hrs
Now, let us find the rate which is the speed;
Speed =
Insert parameters:
Speed = = 100km/hr
Since the speed of Imamu = 2 x speed of Mosi = 200km/hr
Time taken = = = 0.25hr
Explanation:
Every valid chemical equation must be balanced i.e the same number of atoms must be present on both sides of the equation.
The law of conservation of mass states that "matter cannot be created nor destroyed in a chemical reaction but are transformed from one form to another".
- A chemical equation contains reactants on the left hand side.
- On the right hand side, the products are formed.
- For the reaction to be valid, there must be equal numbers of atoms of any specie on both sides of the equation.
- This way the law of conservation of mass holds true.
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The rain gets evaporated in to water vapor and is returned to the clouds where they go through condensation and then they poud down as rain or A.K.A, Precipitation.
The true option is a) they form a 90 degree angle.
Pythagorean theorem is valid for right triangles, which is what you can form when the two vectors have a 90 degree angle.
Regarding the other options:
b) They are equal in magnitude: this is not a condition because Pythagoream theorem is valid for any magnitude as long as the angle is 90°C.
c) They have the sam directions: false, because if the two vectors have the same directions the magnitud is the sum of the two magnitudes.
d) They are parallel: false for a similar reason that c) taking into account if they have the same direction or are opposed. .
Answer:
True.
Explanation:
Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;
a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.
b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.
Furthermore, the mechanical energy of a physical object or body is the sum of the potential energy and kinetic energy possessed by the object or body.
Mathematically, it is given by the formula;
Mechanical energy = G.P.E + K.E
Mechanical energy that has been ‘lost' to friction isn't really lost. It just is no longer in its mechanical form. This is ultimately in accordance with the law of conservation of energy, which states that energy cannot be destroyed but can only be converted or transformed from one form to another.
Hence, Mechanical energy that has been ‘lost' to friction isn't really lost but converted into heat energy.