Answer:
Average speed
Explanation:
Distance covered = 100 metres
Time taken = 20 seconds
Therefore the speed of the boy is 5m/s
Answer:
Explanation:
We know that at pointed corner of a conductor , charge accumulate ie electric field is maximum . Ar pointed corner , radius of curvature will be least . That is why charge leakage is greatest at pointed corner of a charged conductor.
a ) Electric field will be 26.0 kN/C at the point where radius of curvature is greatest .
b ) So electric field will be 66 kN /C at the point where radius of curvature is smallest .
The acceleration of gravity on the surface of Pluto is
Explanation:
The acceleration of gravity at the surface of a planet is given by the equation:
where
is the gravitational constant
M is the mass of the planet
R is the radius of the planet
For Pluto, we have:
is the mass
is the radius
Substituting, we find its gravitational acceleration:
Learn more about gravity:
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What type of reaction is being shown in this energy diagram
Answer:
Explanation:The four closest to the sun — Mercury, Venus, Earth and Mars — are the terrestrial planets. They have rocky surfaces enclosed by relatively shallow atmospheres.