What type of bond is formed if atoms donate electrons to other atoms when the elements are combined?

Answers

Answer 1

Answer: Ionic bond.

In the ionic bond one atom loses one or more electrons, leaving the atom with positive charge, and the other atom accepts those electrons standing with negative charge.

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Convert the term of g from m/s2 to cm/s2

Answers

To convert the acceleration from meters per second squared (m/s²) to centimeters per second squared (cm/s²), you can use the following conversion factor:

1 m = 100 cm

So, to convert from m/s² to cm/s², you need to square this factor because acceleration is in units of length per time squared:

(1 m/s²) = (100 cm/s²)

Therefore, 1 m/s² is equal to 100 cm/s².

If the velocity of blood flow in the aorta is normally about 0.32 m/s, what beat frequency would you expect if 4.40-MHz ultrasound waves were directed along the flow and reflected from the red blood cells? Assume that the waves travel with a speed of 1540 m/s .

Answers

Answer:

The beat frequency is 0.0019 MHz.

Explanation:

Given that,

Velocity = 0.32 m/s

Frequency = 4.40 MHz

Speed of wave = 1540 m/s

We need to calculate the frequency

Case (I),

Observer is moving away from the source

Using Doppler's effect

$f'=(v-v')/(v)f$

Where, v' = speed of observer

Put the value into the formula

$f'=(1540-0.32)/(1540)*4.40$

$f'=4.399\ MHz$

Case (II),

Cell is as the source of sound of frequency f' and it moving away from the observer.

Using formula of frequency

$f''=(v-v_(s))/(v+v_(s))* f$

$f''=(1540-0.32)/(1540+0.32)*4.399$

$f''=4.3971\ MHz$

We need to calculate the beat frequency

$\Delta f= f'-f''$

$\Delta f=4.399-4.3971=0.0019\ MHz$

Hence, The beat frequency is 0.0019 MHz.

The ability of a material to transfer heat or electric current is calledA. conductivity.
B. insulation.
C. porosity.
D. convection.

Answers

the answer is conductivity

The National Grid supplied a house with 18,000,000 J of energy in 1 hour. What was the average current supplied to the house during that hour?

Answers

I got 0.0126, but it feels wrong.

Which of the following is a characteristic of elements A. They are always metals
B. They cannot be divided into simpler substances
C. They break down when reacting with acids
D. They can be altered with and electric current

Answers

Answer:

Explanation:

They are the BASE elements. Cannot make them any simpler.

1. What does it mean to say that sport and play is a 'Universal Language"?

Answers

Answer:

Explanation:

meaning that the way different people from around the world come together to play and converse brings about a universal language.we might not know their language but still through sports that we don't even need to know just play

Sport is a universal language that can bring people together, no matter
what their origin, background, religious beliefs, or economic status. Sports can play a role in improving the lives of whole communities.

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