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Elenna [48]
3 years ago
5

The upward force on an object falling through the air is?

Physics
1 answer:
eduard3 years ago
3 0
The thing that pushes the object up while it is falling is air. This force is known as "air resistance". 
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What is an astronomical unit?
Pie
<span>the average distance between the Earth and the Sun</span>
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4 years ago
Read 2 more answers
A. According to theory, the period T of a simple pendulum is T = 2????√ ???? ???? a. If ???? is measured as ???? = 1.40 ± 0.01 m
salantis [7]

Answer:

a)         T = (2,375 ± 0.008) s , b) When comparing this interval with the experimental value we see that it is within the possible theoretical values.

Explanation:

a) The period of a simple pendulum is

         T = 2π √ L / g

Let's calculate

         T = 2π √1.40 / 9.8

         T = 2.3748 s

The uncertainty of the period is

         ΔT = dT / dL ΔL

         ΔT = 2π ½ √g/L   1/g  ΔL

         ΔT = π/g √g/L   ΔL

         ΔT = π/9.8 √9.8/1.4    0.01

         ΔT = 0.008 s

The result for the period is

        T = (2,375 ± 0.008) s

b) the experimental measure was T = 2.39 s ± 0.01 s

The theoretical value is comprised in a range of [2,367, 2,387] when we approximate this measure according to the significant figures the interval remains [2,37, 2,39].

When comparing this interval with the experimental value we see that it is within the possible theoretical values.

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4 years ago
What is consistency paradox​
Mumz [18]

Answer:

Consistency paradox is the observation that a human being’s personality tends to remain the same over time, while their behavior can change in different situations.

Many personality characteristics are relatively constant throughout a person's life, but people can act in all sorts of ways (even ones that seem to be opposite of their personality) in different situations. For instance, even the most even-tempered and easy-going person can be driven to violence when put under enough stress or pressure.

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(a) the principle of aerodynamic convergence

(b) the centripetal force

(c) Conservation of angular momentum

(d) Conservation of kinetic energy

(e) None of these

Conservation of angular momentum

Answer: Option C.

<u>Explanation:</u>

The law of conservation of angular momentum expresses that when no outer torque follows up on an article, no difference in precise force will happen.

The law of conservation of angular momentum expresses that the angular energy of a body that is the result of its snapshot of latency about the hub of revolution and its rakish speed about a similar pivot, can't change except if an outside torque follows up on the framework.

7 0
4 years ago
NEED HELP ASAP!!! Please and thank you
svetlana [45]

Answer:

Always.

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