Show that one ampere is equivalent to a flow of 6.25*10^18 elementary charges

Answers

Answer 1

Answer: It's not. It's equivalent to the transfer of that many elementary charges every second .

The elementary charge (charge on an electron) is

1.60 x 10⁻¹⁹ coulomb / electron.

The number of electrons in a Coulomb is the reciprocal of that number.

6.25 x 10⁻¹⁸ electrons / Coulomb.

There's the number. 1 Coulomb per second is called 1 Ampere.

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List the characteristics properties of all waves. at what speed do electromagnetic waves travel in a vacuum
Leon sees a poster that shows a lake in front of a snow-capped mountain. The mountain appears upside down in the lake. Which best explains why the image of the mountain appears in the lake?A.The surface of the lake is smooth.B.The surface of the lake is transparent.C.The surface of the lake is polished.D.The surface of the lake is rough.
What makes us human?
A slingshot is used to launch a stone horizontally from the top of a 20.0 meter cliff. The stone lands 36.0 meters away.a. At what speed was the stone launched?b. What is the speed and angle of impact?
A uniform Capillary tube closed at one end Contain dry air trapped by a thread of mercury 8.5x10 m long when the tube was held horizontally, the length of the air Column 5.0X10^2 Wher it held verti cally with the closed end downward the length was 4.5x10^2m Determine the value of atmospheric pressure take g=10m/s, density of mercury (1.36×10^4kg/m)

Which types of radioactive decay cause the parent nucleus to become a different element or isotope (and thus are useful for radioactive dating)? Group of answer choices Alpha decay Beta decay Gamma decay Both alpha and beta decay Both beta and gamma decay All three: alpha, beta, and gamma decay

Answers

Answer: alpha decay and beta decay cause the parent nucleus to become a different element.

Explanation:

Alpha decay : It is a radioactive decay in which nucleus emits an alpha particle and turns into different atomic nucleus. During alpha decay, an atom loses 2 protons and 2 neutrons.

$_Z^A\textrm{X}\rightarrow _(Z-2)^(A-4)\textrm{Y}+_2^4\alpha$

Beta decay is defined as the process in which beta particle is emitted. In this process, a neutron gets converted to a proton and an electron.Thus a different element is produced.

$_Z^A\textrm{X}\rightarrow _(Z+1)^A\textrm{Y}+_(-1)^0\beta$

Gamma decay : In this process, the unstable nuclei transformed into stable nuclei by releasing gamma rays along with beta or alpha decay.The same element is produced.

$_Z^A\textrm{X}^*\rightarrow _Z^A\textrm{X}+_0^0\gamma$

The leaning tower of Pisa is about 56 meters tall. A ball released from the top takes 3.4 seconds to reach the ground. The final velocity of the ball before it hits the ground is 33 meters/second. Assuming that the ball experienced a constant acceleration throughout this descent, calculate the magnitude of the acceleration

Answers

Answer:The magnitude of the acceleration is $9.70 m/s^2$

Explanation:

Final velocity of the ball falling down ,v = 33 m/s

Initial velocity of the ball ,u= o m/s

Time taken by the ball to reach the ground ,t = 3.4 seconds

Acceleration of the ball during the fall = a

Using first equation of motion:

$v=u+at$

$33 m/s=0 m/s+a(3.4 s)$

$a=(33 m/s)/(3.4 s)=9.70 m/s^2$

The magnitude of the acceleration is $9.70 m/s^2$

The acceleration of the ball would be around 9.1666667m/s
To work this out use this formula

acceleration = distance*velocity/distance*time

An electric kettle. The input energy is 10 Joules. The useful output energy is heat 9Joules. Wasted energy is sound 1 Joules.

Answers

Answer:

Efficiency = 90 %

Wasted energy = 10 %

Explanation:

Since we have the input energy and useful output energy of the electric kettle, the only thing we are required to calculate here is its efficiency. This is gotten from

E = useful output energy/input energy × 100

E = 9/10 × 100 = 90 %

The percentage of wasted energy is

W = wasted energy/input energy × 100

W = 1/10 × 100

W = 10 %

How does the scientific process generally begin?

Answers

Answer : To develop a scientific process is a big task. Initially the scientist or the interested researcher may start with the following steps;

a) Start with an Unsolved question;

b) Conduct experiments;

c) Analyse from the observations of the experiments

d) From the conclusions create an theoretical hypothesis;

e) Check for reproducibility of the test results.

f) Write a thesis and submit to a scientific community.

There are several approaches. The most favourable one (in my opinion) is this one:
1. Asking a question
2. Doing a research (how to answer this question)
3. Creating a hypothesis (NOT a thesis!)
4. Experimenting (to prove the hypothesis)
5. Analysing results from the experiment
6. Writing a thesis

Which temperature corresponds to standard temperature as 0 degrees Celsius? a. 273 K b. 100 K c. 32 K d. 0 K

Answers

Answer:

A.) 273 K

Explanation:

Standard temperature, often referred to as standard room temperature, is defined as 0 degrees Celsius (0°C). To convert this temperature to Kelvin (K), you can use the following formula:

K = °C + 273.15

So, to find the temperature in Kelvin corresponding to 0 degrees Celsius:

K = 0°C + 273.15 = 273.15 K

Therefore, the temperature corresponding to standard temperature as 0 degrees Celsius is:

a. 273 K

A meterstick moves toward you at speed 0.60c. What length do you measure for the meterstick?

Answers

-- IF the meter stick is oriented perpendicular to the direction from
it to you, then it appears 1 meter long to you, but very very skinny.
The Lorentz contraction only applies in the direction of motion.

-- If the length of the meter stick is pointing toward you, then . . .

L = L₀ √ (1 - v²/c²)

= √ (1 - 0.36)

= √ (0.64) = 0.8 meter .

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