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Ber [7]
3 years ago
13

"The wave" is a particular type of pulse that can

Physics
1 answer:
scoray [572]3 years ago
4 0

Answer:

t = 36π seconds

Explanation:

For resolving this problem, we are going to consider a representative stadium of the United States. The Mercedes-Benz Stadium located in Atlanta, Georgia has an average radius of 90 m.

Then, its circumference measures:

L = 2πr

L = 2π(90)

L = 180π m

First, we estimate the wave's velocity: the average width of an person is 0.5 m, then the velocity is:

v = x/t

                 Where x: person's width

                             t: time

v = 0.5/0.1 = 5 m/s

The time required for the pulse to make one circuit around the stadium is:

t = x/v = 180π/5 = 36π seconds

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Jeff’s father is installing a do-it-yourself security system at his house. He needs to get a device from his workshop that conve
LekaFEV [45]

<u>Answer:</u>

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<u>Explanation:</u>

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A negative charge moves in a direction opposite to that of an electric field. What happens to the energy associated with the cha
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Answer:

There is a decrease in the potential energy and a relative increase in the kinetic energy of the charge.

Explanation:

The direction of the electric field and that of the force acting on a positively charge particle is same while in case of a negative charge the force acts in the opposite to that of the electric field field.

When the negative charge moves in the direction opposite to that of the electric field then work is done on the charge and is thus positive which means the potential energy associated with the charge reduces and is stored in the vicinity of the field while there is a relative increase in the kinetic energy of the charge.

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A smart phone charger delivers charge to the phone, in the form of electrons, at a rate of -0.75. How many electrons are deliver
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Answer:

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Solution:

According to the question:

The rate at which the charge is delivered is given by:

\frac{dQ}{dt} = - 0.75

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\int_{0}^{Q}dQ = - 0.75\int_{0}^{27 min} dt

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Thus

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n = 7.59\times 10^{21}

8 0
3 years ago
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