Answer:
24.1 m/s
Explanation:
Using newton's equation of motion,
s = (v+u)t/2 .............................. Equation 1
Where s = distance, v = Final velocity, u = initial velocity, t = time.
making v the subject of the equation,
v = (2s/t)-u........................... Equation 2
Given: s = 3.2 km= ( 3.2×1000) m = 3200 m , t = 3.5 min = (35× 60 ) s = 210 s, u = 6.4 m/s.
substitute into equation 2
v = (2×3200/210)-6.4
v = 24.076 m/s
v ≈ 24.1 m/s
Explanation:
there are 8 atoms of oxygen
adaptations
speciation
genes
Answer:
"Darwin's finches" reside on the Galapagos Islands. Each species has a different type of beak, however, they can all be traced back to one common ancestor. The different beaks are an example of adaptations.
Explanation:
In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the population during that process.
A. Commutator
B. Loop of wire
C. Permanent magnets
D. Battery
PLS HELP
Commutator is part of a motor causes its electromagnet to turn in the same direction consistently, transforming electrical energy into mechanical energy.
Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.
A commutator is a rotary electrical switch in certain types of electric motors and electrical generators.
Commutator is part of a motor causes its electromagnet to turn in the same direction consistently, transforming electrical energy into mechanical energy.
To learn more about energy refer to the link:
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Answer:
A. Commutator
Explanation:
300 J
400 J
1000 J
Answer:
The K.E of the pendulum is, K.E = 200 J
Explanation:
Given data,
The kinetic energy of the bob of the pendulum at the bottom, K.E = 600 J
The potential energy at the height 4 m, P.E = 400 J
According to the conservation of energy, the total energy of the mechanical system should be conserved.
At the bottom of the swing, the entire mechanical energy of the pendulum is purely kinetic. Therefore the total energy
E = P.E + K.E
= 0 + 600 J
= 600 J
Therefore, the total energy of the system, E = 600 J
At height 4 m, the total energy of the system remains the same.
Therefore,
600 J = 400 J + K.E
K. E = 600 J - 400 J
= 200 J
Hence, the K.E of the pendulum is, K.E = 200 J
Potential energy, unlike kinetic, is stored energy. This energy comes from different sources. An object with potential energy also has the ability to produce energy if something triggers it. Example, a charged battery, a car on top of a hill, and capacitors.
Answer:
The Supreme Court decision in Marbury v. Madison established the principle of judicial review. This means that the Supreme Court has the power to declare laws or actions of the executive and legislative branches unconstitutional if they violate the Constitution. The decision was made in 1803 and is considered a landmark case in American law and politics. It established the idea that the judiciary is a coequal branch of government and has the responsibility to interpret the Constitution and ensure that the other branches of government do not exceed their constitutional authority.
Explanation: