A chemical substance, element or compound. Homogeneous mixtures are complex and not easily broken down.
Answer:
5.625km/h
Explanation:
We are given that
Distance between home and market, d=2.5 km
Speed, v1=5km/h
Speed, v2=7.5 km/h
We have to find the average speed of the man over the interval of time 0 to 40min.
Time,
Using the formula
1 hour =60 min
Distance traveled by man in 10 min with speed 7.5 km/h=
Therefore,
Total distance covered=2.5+2.5/2=3.75 km
Time=40 min=40/60=2/3 hour
Average speed=
Average speed=
Answer:
All atoms are magnetic; they have charges moving around within them. For a macroscopic object made of atoms to be a magnet, the atoms' magnetic fields in it have to align with each other. This will create a large scale magnetic field around the object.
They would weight 69N on the moon's surface.
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Answer: Protons
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The proton is a subatomic particle with a positive elemental electric charge equal in absolute value and opposite sign to that of the electron. This is due to the action of the electromagnetic force.
This particle was made known by Ernest Rutherford in the twentieth century (specifically in the year 1918).
It should be noted that protons are classified within the category of baryons which are subatomic particles formed by three quarks.