A scalar quantity is a quantity that has magnitude only but no direction, while a vector quantity is a quantity that has both magnitude and direction:
Let's go through the choices:
Displacement: you can move from one point to another towards east, west, north,....etc. This means that displacement has both magnitude and direction. (vector)
Time: time has no direction whatsoever. (scalar)
Velocity: velocity is mass*acceleration. The acceleration can be towards any direction. Your velocity can be towards any direction. Since acceleration is vector, therefore, velocity is also a vector quantity.
Force: a force can push a body right, left,...etc. This means that the force has a direction as well as a magnitude. (vector).
Based on the above, the scalar quantity is:
(B) Time
It has to be oxygen as it has a charge of -2 and magnesium has a charge of +2 so when they bond it would be MgO
Answer:
100 g
Explanation:
We know the concentration is 200 g/L.
Convert 500mL to L: 500mL/1000mL = 0.5 L
Now, multiply this by 200 to cancel out the L units and get grams:
200 g/L * 0.5 L = 100 g
Thus, the answer is 100 grams.
Hope this helps!
Answer:
yes
Explanation:
The five senses: sight, hearing,
taste, smell, and touch can be extended with instruments
