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3 years ago

Which of the following is the most important factor in determining an element’s place in the periodic table?

Physics

2 answers:

Ivanshal [37]3 years ago

7 0

It’s A Bc I took the test

umka21 [38]3 years ago

5 0

A give brainliest answer plz

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The maximum speed at which a patch of the surface moves during a vibration is 4.5 m/s . What is the amplitude of the vibration,

frutty [35]

Answer:

a) Angular frequency, w = 0.0184 rad/s

b) Amplitude of vibration = 245 m

Explanation:

a) Angular frequency, w = 2πf

f = 1/T, T = 5.7 minutes = 5.7 × 60 = 342 s

f = 1/342 = 0.00292 Hz or 0.00292/s

w = 2π (0.00292) = 0.0184 rad/s

b) Amplitude of simple harmonic motion,

displacement of simple harmonic motion, x(t) = A cos (wt-Φ)

A = amplitude

v = dx/dt = - Aw (sin (wt - Φ)

Velocity amplitude of simple harmonic motion = Amplitude × angular frequency

Amplitude = (velocity amplitude)/(angular frequency) = 4.5/0.0184 = 245m

Hope this Helps!!!

7 0

3 years ago

What type of energy results in a flow of electrons?

Genrish500 [490]

Electrical energy, a form of kinetic energy results in a flow of electrons.

<u>Explanation: </u>

Any kind of energy related to flow or motion of objects or particles falls under the category of kinetic energy. When an object undergoes motion or flow, it will exhibit velocity leading to kinetic energy, or energy utilized from the force applied for the motion.

In this case, the electrons will flow between the molecules due to the electric current supplied to it leading to the electrical energy, the flow of electrons generate current in opposing direction to the flow of electrons. Thus, current can be produced due to the flow of electrons on applying electrical energy.

4 0

4 years ago

train travels 1/4of its total distance over half of its time with a constant velocity of 5m/s. calculate the average velocity

Katarina [22]

Let D be the total distance (say in meters) traveled by the train and T the time (say in seconds) it takes to do so. (Assume the train moves in a straight line in only one direction.) Then the average velocity of the train as it covers this distance is

v (ave) = D/T

We're told the train can traverse a distance of D/4 in a matter of T/2 seconds if it moves at a speed of 5 m/s. This means

D/4 = (5 m/s) (T/2)

⇒ 5 m/s = 1/2 D/T

⇒ v (ave) = D/T = 10 m/s

3 0

3 years ago

Which of the following describes a physical change? A. A marshmallow burns over an open flame. B. Icicles melt from a rooftop. C

AnnZ [28]

Answer:

Explanation:

Icicles melt from a rooftop

5 0

3 years ago

What is hemispheric specialization?

Ludmilka [50]

It is the study of cognitive functions.

4 0

3 years ago