Answer:
Once the weighted end of the pendulum is released, it will become active as gravity pulls it downward. Potential energy is converted to kinetic energy, which is the energy exerted by a moving object. An active pendulum has the most kinetic energy at the lowest point of its swing when the weight is moving fastest.
Explanation:
c. gets warmer.
b. gets colder.
d. turns to ice. Please select the best answer from the choices provided A B C D
Answer: Option (b) is the correct answer.
Explanation:
Density means the degree of compactness, that is, when particles of an object or substance are closer to each other then it is said that density of object is high.
Therefore, when ocean water gets colder then particles of water will gain potential energy and thus they will come closer to each other. Hence, there will be increase in density of ocean water when it gets colder.
We are given that a growing person needs a diet that supplies about 10 MJ of energy per day.
To convert this to energy supplied per second, we can use the following conversion:
1 day = 24 hours/day x 60 minutes/hour x 60 seconds/minute = 86400 seconds
Therefore, the energy supplied per second is:
10 MJ/day = 10,000,000 J/day ÷ 86400 seconds/day = 115.74 J/s
The person's average power is the energy supplied per second, which is:
P = 115.74 J/s ≈ 120 W (rounded to the nearest 10 W)
Therefore, the person's average power is approximately 120 W.
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increase by a factor of 4
decrease by a factor of 2
decrease by a factor of 4
Answer:
Increase by a factor of 4.
Explanation:
The acceleration of a car moving with speed v in a circle of radius R is given by:
Now if we double the speed in the equation above, it becomes . Thus:
Therefore the acceleration is increased by a factor of 4.
circular
longitudinal
latitudinal
Answer:
longitudinal
Explanation: