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4 years ago

Wat's the definition of microwave spectroscopy

Physics

1 answer:

ivann1987 [24]4 years ago

6 0

Answer:

Microwave spectroscopy is the spectroscopy method that employs microwaves, i.e. electromagnetic radiation at GHz frequencies, for the study of matter

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A human services professional has worked with a particular client for a couple of years. The client

zhuklara [117]

Answer:

Respect the client’s decision

Explanation:

just took the test

4 0

3 years ago

Sally Sizzle builds a circuit by connecting three resistors in oarallel with a 9v battery. The current in this curvuit is 3.6 am

Sergeeva-Olga [200]

Answer:

The new resistor has resistance of 9Ω.

Explanation:

The effective resistance of three resistance is

$(1). \: \: \frac{1}{R_e} = \frac{1}{R_1}+ \frac{1}{R_2}+ \frac{1}{R_3}$ .

we know the the circuit with 9V battery has current of 3.6A; therefore, $R_e$ must be

$V = IR_e$

$R_e = \dfrac{V}{I} = \dfrac{9V}{3.6A}$

$R_e = 2.5\Omega$ ,

which means

$\frac{1}{2.5\Omega } = \frac{1}{R_1}+ \frac{1}{R_2}+ \frac{1}{R_3}$

$\boxed{0.4\Omega^{-1} = \frac{1}{R_1}+ \frac{1}{R_2}+ \frac{1}{R_3} .}$

Now, Sally wants to connect another resistor in parallel so that the current becomes 4.6A. The resistance required for that is

$R_{new} = \dfrac{9V}{4.6A}$

$R_{new} = 1.957 \Omega$ .

which means the 4th resistor $R_4$ must satisfy the equation

$(2), \: \: \frac{1}{1.957\Omega} = \frac{1}{R_1}+ \frac{1}{R_2}+ \frac{1}{R_3}+\frac{1}{R_4} ,$

and since

$\frac{1}{R_1}+ \frac{1}{R_2}+ \frac{1}{R_3} =0.4\Omega^{-1},$

equation (2) becomes

$\frac{1}{1.957\Omega} =0.4\Omega^{-1}+\frac{1}{R_4} ,$

which we solve for $R_4$ :

$0.511\Omega^{-1} =0.4\Omega^{-1}+\frac{1}{R_4} ,$

$0.111\Omega^{-1} = \dfrac{1}{R_4}$

$\boxed{R_4 = 9\Omega}$

Thus, the resistance of the new resistor is 9 ohms.

3 0

4 years ago

The planet Mars has a mass of 6.1 × 1023 kg and radius of 3.4 × 106 m. What is the acceleration of an object in free fall near t

Oksanka [162]

The acceleration due to gravity of Mars is $3.5\ m / s^{2}$

<u>Explanation:</u>

As per universal law of gravity, the gravitational force is directly proportional to the product of masses and inversely proportional to the square of the distance between them. But in the present case, the gravity need to be determined between Mars and the object on Mars. Since the mass of Mars is greater than the mass of any object. Thus,

$\text {Gravitational force of planet}=\frac{G M m}{R^{2}}$

Here, G is the gravitational constant, R is the radius of Mars and M, m is the mass of Mars and the object respectively..

Also, according to Newton’s second law of motion, the acceleration of any object will be equal to the ratio of force exerted on it to the mass of the object.

So in order to determine the acceleration due to gravity of Mars, divide the gravitational force of Mars by mass of object on the surface of Mars.

$Acceleration\ due\ to\ gravity\ of\ mars =\frac{\text {Gravitational force of Mars}}{m \text { of object }}$

$Acceleration\ due\ to\ gravity\ of\ mars =\frac{G M m}{R^{2} \times m}=\frac{G M}{R^{2}}$

$\text { Acceleration due to gravity of mars }=\frac{6.67259 \times 10^{-11} \times 6.1 \times 10^{23}}{3.4 \times 3.4 \times 10^{12}}=\frac{40.703 \times 10^{12}}{11.56 \times 10^{12}}$

$\text { Acceleration }=3.5\ \mathrm{m} / \mathrm{s}^{2}$

3 0

3 years ago

Prior to science lab, Maria had been drinking a can of soda. When she walked into the lab she set it down on the hot plate at he

Vesnalui [34]

Answer:

The hypothesis as to what happened to the soda and the air in the can are as follows;

The solubility of air in the soda is high at low temperatures, such that air (carbon dioxide, CO₂) is trapped in the soda and when it is drank, it gives it its fresh taste

By placing the can of soda on the hot plate, drives off the air in the soda such that the space directly above the liquid soda is filled with the original air (carbon dioxide), in the soda

By dipping the soda upside down in the sink half filled with water, the soda is cooled down and the air (carbon dioxide) directly above the surface of the liquid soda is reabsorbed into the liquid soda, such that if the lid of the soda is sealed, the vacuum created by the empty space directly above the liquid soda becomes a region of low pressure and the combined pressure from the atmosphere and the liquid level in the sink, causes the can to immediately crushed (deformed).

Explanation:

8 0

3 years ago

Can someone answer this?

tatiyna

I’m sure gravitation should be at the river sorry if I’m wrong

6 0

3 years ago