Is it possible to have 400m distance and yet zero for displacement? Please explain by using an example.

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Answer 1

Answer: Yes, If you travel in a circle that has a circumference of 400 m and you complete that four hundred metres you will end up in the same spot. Imagine a 400 m race track. You complete 1 lap you end up where you started, hence no displacement, but you have traveled 400 m

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Which statement best describes one main idea of Of Plymouth Plantation?

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The correct answer for this question is this one: "The Pilgrims found themselves in a hostile environment with only their religious faith to sustain them." This is the best statement that best describes one main idea of Of Plymouth Plantation.

Amusement parks are a great place to see Newton's laws of motion in action. Choose your favorite ride and describe the parts of the ride that illustrate each of Newton's laws of motion.

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I can't choose your favorite ride for you.

Which of the following energy sources is in no way derived from the Sun?A) nuclear energy B)tidal energy C) wind energy D) petroleum

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Tidal, wind, and oil energy are derived from the sun. Nuclear isn't.

A.) nuclear energy. is the answer

How can a cyclist minimize friction as he or she rides?A.by increasing the weight of the bike
B.by increasing the trend on his or her tires
C.by decreasing the air resistance
D.by decreasing aerodynamic design

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The answer would be B. All the other answers would add friction.

The answer is C. by decreasing the air restistance. Hope this helps...

Which of the following is NOT true? a. The higher the moment of inertia, the greater the resistance to changes in angular velocity. b. The higher the moment of inertia, the slower something will roll down an incline. c. The lower the moment of inertia, the easier it is to change the angular velocity. d. The lower the moment of inertia, the slower something will roll down an incline.

Answers

Answer:

Explanation:

The moment of inertia is the integral of the product of the squared distance by the mass differential. Is the mass equivalent in the rotational motion

a) True. When the moment of inertia is increased, more force is needed to reach acceleration, so it is more difficult to change the angular velocity that depends proportionally on the acceleration

b) True. The moment of inertia is part of the kinetic energy, which is composed of a linear and an angular part. Therefore, when applying the energy conservation theorem, the potential energy is transformed into kinetic energy, the rotational part increases with the moment of inertia, so there is less energy left for the linear part and consequently it falls slower

c) True. The moment of inertial proportional to the angular acceleration, when the acceleration decreases as well. Therefore, a smaller force can achieve the value of acceleration and the change in angular velocity. Consequently, less force is needed is easier

Final answer:

d. The lower the moment of inertia, the slower something will roll down an incline - this is the option that is NOT true. Objects with lower moments of inertia roll down inclines faster, not slower because they resist changes to their rotation less.

The correct statement that is NOT true among the provided options is: d.

Explanation:

The correct statement that is NOT true among the provided options is: d. The lower the moment of inertia, the slower something will roll down an incline.

The moment of inertia, often denoted by 'I', is essentially the rotational equivalent of mass for linear motion. It is a property of a body that measures its resistance to angular acceleration, which is its change in angular velocity.

a. True - The higher the moment of inertia, the greater the resistance to changes in angular velocity, because a body with a larger moment of inertia (mass concentrated farther from the axis of rotation) requires more torque to change its rotational speed.
b. True - The higher the moment of inertia, the slower something will roll down an incline. This is because an object with a greater moment of inertia will resist rolling down the incline more than one with a lower moment of inertia.
c. True - The lower the moment of inertia, the easier it is to change the angular velocity, as there is less mass resisting the change in rotation.

However, the claim in statement d is not correct as per the principles of rotational motion in physics. An object with a lower moment of inertia would actually roll down an incline faster, not slower, given the same amount of gravitational potential energy, since it has less resistance to changes in its rotational motion.