Something that goes round in circles could have a high speed but zero average velocity.
Answer:
m = 7000 - 500 = 6500 g
ρ = m/v = 6500 gm / 500 cm³ = 1.3 g/cm³
The paint brush floats because its density is less than that of the paint and has displaced its weight in the paint.
Explanation:
Answer:
Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. Renewable resources are replenished naturally and over relatively short periods of time. The five major renewable energy resources are solar, wind, water (hydro), biomass, and geothermal.
Explanation:
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Answer:
Explanation:
While mass is falling downwards there is no frictional loss so here we can use mechanical energy conservation
So change in gravitational potential energy = gain in kinetic energy of the system
for uniform cylinder we will have
now we have
now we have
Answer:
Explanation:
From the question we are told that:
Mass
Initial Velocity
Final Velocity
Generally the equation for Work-done is mathematically given by
W=\triangle K.E
Therefore