Answer:
Explanation:
Given
Car starts from the state of rest and acquires a velocity of in 6 minutes
Final velocity in m/s is
Using equation of motion
Distance covered in 360 s
Answer
Correct Answer is C (10% of the plant's energy is transferred
Explanation:
Ecosystem
ecosystem is a community where large number of living organisms lives. These living organism are plants, trees, different types of animals, birds etc. These living organism depends on each other for their food.
Their are various levels in ecosystem like producer, primary consumer, secondary consumer and tertiary consumer.
producer like plants produce their food on their own. And primary consumers takes their food from producers.
According to 10% Rule of ecology only 10% energy is passed from one level to another.So 10% of the plant's energy is transferred
Answer:
B
Explanation:
yea it is b im sure
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<h3><u>Answer;</u></h3>
Carbon films
<u>Carbon films</u> fossil formed when an outline of the original organism is formed from left-over carbon.
<h3><u>Explanation;</u></h3>
- <em><u>Carbon films are formed when a think film of carbon is left, forming a silhouette of the original organism. </u></em>This occurs when the oxygen, hydrogen and nitrogen of the organism disappear, leaving a thin layer of carbon a known as distillation or carbonization.
- Carbon fossils are usually black, dark brown or light brown in color, which depends on the type of rock they are pressed upon. They form a two-dimensional shape unlike trace fossils, molds and casts.
Answer:
a) 8.99*10³ V b) 4.5*10⁻² J c) 0 d) 0
Explanation:
a)
- The electrostatic potential V, is the work done per unit charge, by the electrostatic force, producing a displacement d from infinity (assumed to be the reference zero level).
- For a point charge, it can be expressed as follows:
- As the electrostatic force is linear with the charge (it is raised to first power), we can apply superposition principle.
- This means that the total potential at a given point, is just the sum of the individual potentials due to the different charges, as if the others were not there.
- In our case, due to symmetry, the potential, at any corner of the triangle, is just the double of the potential due to the charge located at any other corner, as follows:
- The potential at point C is 8.99*10³ V
b)
- The work required to bring a positive charge of 5μC from infinity to the point C, is just the product of the potential at this point times the charge, as follows:
- The work needed is 0.045 J.
c)
- If we replace one of the charges creating the potential at the point C, by one of the same magnitude, but opposite sign, we will have the following equation:
- This means that the potential due to both charges is 0, at point C.
d)
- If the potential at point C is 0, assuming that at infinity V=0 also, we conclude that there is no work required to bring the charge of 5μC from infinity to the point C, as no potential difference exists between both points.