What does v or vf stand for? What SI units are used to measure it?

Answers

Answer 1

Answer:

Ventricular Fibrillation

Explanation:

it is measured bpm ( beats per minute ) of the cardiac muscles of the heart in a poor / disorderly working condition.

Answer 2

Answer:

velocity and final velocity (m/s)

Explanation:


Related Questions

Explanation of the Lunar eclipse
● Provide details such as rotation and axis.
● For lunar and solar eclipse describe partial eclipse
and total eclipse. For seasons describe all four seasons.
● Identify the relative position of the sun and earth in each case.
● Use a cause and effect to show how the chosen phenomena
occurs.

Answers

A lunar eclipse occurs when the Moon moves into the Earth's shadow. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned (in syzygy) with Earth between the other two, and only on the night of a full moon.

what does the symbol 'Mg' represent?​

Answers

Answer:

[tex]the \: symbol \: mg \: represent \: magnesium \\ thank \: you[/tex]

Answer:

Magnesium.

I hope it's helps you

PLS HELP PHYSICS
Use the list to answer the question.

potassium, Group 1
calcium, Group 2
iodine, Group 17
neon, Group 18
Which two elements in the list would bond together based on their ionic charges?

(1 point)

potassium and neon

potassium and iodine

calcium and neon

calcium and potassium

Answers

Answer:

It is Potassium and iodine

Every action force has an opposite and equal reaction force. Determine which of these are action/reaction pairs. Check all that apply.​

Answers

Answer:

where are the questions /pairs

Explanation:

Answer:

A girl leans against a wall and the wall pushes on the girl.

A baseball hits a glove and the glove pushes on the ball.

A cat rubs up against a tree and the tree pushes against the cat

Explanation: i finished the question

The brakes on your automobile are capable of slowing down your car at a rate of 4.7 m/s2. (a) If you are going 134 km/h and suddenly see a state trooper, what is the minimum time in which you can get your car under the 90 km/h speed limit

Answers

Answer:

It's should be 7.0m/s.....i hope it helps

After the experiment, scientists organize and (blank) the data.

Does anyone know what goes in the blank? Im doing a crossword puzzle and I need help, please. (/w\)

Answers

Answer:

analyze

Explanation:

What is environment

Answers

Answer:

environment is the situation of the place

Explanation:

i think helping you... have a great day:)

5. A ball with momentum of 16 kg x m/s strikes a ball at rest. What is the total momentum of both balls after the collision? a. -16kg x m/s b. -8 kg x m/s c. 8 kg x m/s d. 16 kg x m/s? help please ​

Answers

Answer:

D. 16 Kgm/s

Explanation:

Let the momentum of the two balls be A and B respectively.

Momentum A = 16 kgm/s

Momentum B = 0 kgm/s (since the ball is at rest).

Total momentum = A + B

Total momentum = 16 + 0

Total momentum = 16 Kgm/s

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

Momentum = mass * velocity

Why are there only two elements in the first period of the periodic table?(1 point)

because the first two elements both start with H and are grouped together

because the next elements have other things in common and they need to be arranged together

because each row increases in atomic mass by a specific number, so anything over five is in the second row

because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits

Answers

Answer:

because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits

There are only two elements in the first period of the periodic table (statement 4) because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by the number of orbits

A period is defined as an interval  required for a cycle to repeat itself.

A period is a horizontal row of the periodic table. Seven periods in the periodic table, with each one beginning from the far left to right.Periods may contain as few as two elements and as many as thirty-two elements. A new period starts when a new number of orbit or principal energy levels begins filling with electrons.

Period 1 has only two elements (hydrogen and helium) as they have electrons in only the 1st energy level or first orbit and each period on the table is organized by the number of orbits or level of energy.

Learn more about periods of the periodic table:

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is a resistor a control device​

Answers

Answer:

A voltage-controlled resistor (VCR) is a three-terminal active device with one input port and two output ports. The input-port voltage controls the value of the resistor between the output ports. VCRs are most often built with field-effect transistors (FETs). Two types of FETs are often used: the JFET and the MOSFET.

Info from Wikipedia :)

hope this helps :D

depending on what resistor is a electronically controlled variable resistors exist, which can be controlled electronically instead of by mechanical action. These resistors are called digital potentiometers. :)

help with the number 2 question​

Answers

Answer:

It is frequently stated that the value of the acceleration due to gravity at the pole is larger than at the equator because the poles are closer to the center of the earth due to the earth's oblateness. ... The measured value is larger because the earth's density is not uniform but increases toward the center.

Answer:

as explained that poles have more gravitational

force (9.83m/s^2) as the poles of earth is nearer to the center because it is flat at poles

but certainly at equator is having less gravitational force (9.78m/s^2) as it is Farr from centre of earth because it is bulgded at equator.

hence, poles have more gravitational force as co.pared to that of equator.

hope this helped you

any confusion the comment it.

A 12.0 V battery has as 80.0 Ohm
resistor attached. How much
current flows through the circuit?
(Unit = A)

Answers

Potential difference=V=12VResistance=80ohm=RCurrent be I

Using ohms law

[tex]\\ \sf\longmapsto \dfrac{V}{I}=R[/tex]

[tex]\\ \sf\longmapsto I=\dfrac{V}{R}[/tex]

[tex]\\ \sf\longmapsto I=\dfrac{12}{80}[/tex]

[tex]\\ \sf\longmapsto I=0.15A[/tex]

A wombat runs south in a straight line with an average velocity of 5 m/s for 4
minutes and then with an average velocity of 4 m/s for 3 minutes in the same
direction.
What is the wombats total displacement?
What is the average velocity during that time?

Answers

We have that

The wombats total displacement is

[tex]d_t=2100m[/tex]

The average velocity during that time is

[tex]v_{avg}=5m/s[/tex]

From the question we are told that:

initial Velocity [tex]V_1=5m/s[/tex]

initial Time [tex]T_1=4min=>240sec[/tex]

Final Velocity [tex]V_2=4m/s[/tex]

Final time  [tex]T_2=3min=>180sec[/tex]

a)

Generally, the equation for displacement is mathematically given by

d_t=(Initial +final) displacement

Where

initial displacement

[tex]d_1=V_1*t_1\\\\d_1=5*240[/tex]

[tex]d_1=1200m[/tex]

Final displacement

[tex]d_2=V_2*t_2\\\\d_2=5*180[/tex]

[tex]d_2=900m[/tex]

Therefore

[tex]d_t=(Initial +final) displacement[/tex]

[tex]d_t=1200+900[/tex]

[tex]d_t=2100m[/tex]

b)

Generally, the equation for Average velocity is mathematically given by

[tex]v_{avg}=\frac{d_t}{t_1+t_2}[/tex]

[tex]v_{avg}=\frac{2100m}{240+180}[/tex]

[tex]v_{avg}=5m/s[/tex]

in conclusion

The wombats total displacement is

[tex]d_t=2100m[/tex]

The average velocity during that time is

[tex]v_{avg}=5m/s[/tex]

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classify the animal hydra and plant mustard with two characters of each​

Answers

Answer:

Mustard seeds, both white and brown, are nearly globular in shape, finely pitted, odourless when whole, and pungent-tasting

Image result for character of hydra

Introduction: Hydra are inconspicuous freshwater relatives of corals, sea anemones and jellyfish. All are members of the phylum Cnidaria, characterized by radially symmetrical bodies, presence of stinging tentacles and a simple gut with only one opening (gastrovascular cavity)

Explanation:

Hydra are a genus of small, fresh-water organisms that are classified under the phylum Cnidaria.the classification of mustard is

Dicotyledons

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write down the atomic numbers of nitrogen and sodium ?​

Answers

Answer:

Nitrogen is 7, sodium is 11

Answer:

[tex]nitrogen = 7 \\ atomic \: number \: of \: sodium = 11 \\ thank \: you[/tex]

plese help me if u know

Answers

Answer:

The velocity is uniform (unchanging) from A to B

The velocity increases from O to A

The velocity is decreasing from B to C and C to D

Acceleration is zero from A to B because the velocity is constant

The object starts to move at O and stops at D

If a diver displace water with a weight of 500N what is the upthrust on the diver?​

Answers

Answer:

500 N

Explanation:

Natural bouyency will keep the diver in the same place, no matter what the mass of gfs. This means if the diver is displacing with a weight of 500 N, the upthrust will also be 500 N.

Upthrust on the diver will be 500 N

What is Upthrust?

It is the force exerted by a fluid on an object in upward direction .

 

Since , Upthrust = weight  of the liquid displaced by a submerged part of the body

so, Upthrust = mg         where m = mass of the body and

                                                  g = acceleration due to gravity

It is given weight of water displaced = 500 N

hence , Upthrust on the diver will be 500 N

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Explain ALL THREE of Newton’s Laws in your own words.

Answers

Explanation:

(1) Every object moves in a straight line unless acted upon by a force. (2) The acceleration of an object is directly proportional to the net force exerted and inversely proportional to the object's mass. (3) For every action, there is an equal and opposite reaction.

What do you think the disadvantages of nuclear energy are nabilne fa​

Answers

Answer:

1 . Environmental impact. Although nuclear power plants release zero carbon emissions, nuclear power still has a substantial impact on the environment, mainly through mining and water discharge. ...

2. Water intensive. ...

3.Risk of nuclear accidents. ...

4.Radioactive waste. ...

5.Non-renewable.

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which kind of energy does a bullet fired from the gun poseess? How is this energy stored?​

Answers

Answer:

Explanation:

The type of mechanical energy possessed by bullet fired from gun is kinetic energy which is an energy possessed by an object in motion. Thus, the same energy is possessed by a moving bus

if brittany is investigating how fast brian will react to three different sounds , what is the dependent variable in the experiment

Answers

Answer:

Dependent variable- how fast is the time that Brian will react.

Explanation:

Dependent variable - a variable that you can not manipulate and the one that is being observe.

[tex]\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}[/tex]

2. A force of 20N acts on a particle of mass 2 Kg and displaces it by 5m at an angle 30°. What is the work done? a) 40J ) b) 50 J c) 100J​

Answers

Mass is not required

Force=F=20NAngle=30°Displacement=s=5m

[tex]\\ \rm\longmapsto W=Fscos\Theta[/tex]

[tex]\\ \rm\longmapsto W=20(5)cos30[/tex]

[tex]\\ \rm\longmapsto W=100\times \dfrac{\sqrt{3}}{2}[/tex]

[tex]\\ \rm\longmapsto W=50\sqrt{3}J[/tex]

Answer:

[tex]we \: have \\ w = fs \cos( \alpha ) \\ f = 20n \\ m = 2kg \\ s = 5m \\ \alpha = 30 \\ \\ then \: w = 20 \times 5 \times \cos(30) \\ 100 \cos(30) \\ = 100 \frac{ \sqrt{3} }{2} \\ = 50 \sqrt{3} \\ = 86.6 \: joule\\ thank \: yo[/tex]

eo *Write any two uses of good condutor of heat​

Answers

any two uses of good conductor of heat are

aluminium, cooper, metal are good conductor of heat and they are used for making utensils.

gold, silver, are also good conductor of heat they are used for making jewelleries.

true or false

the bounciness of a ball changes with temperature

true
false ​

Answers

Answer:

False

Explanation:

This depends on how much air is in the ball, I think

Work out
1. A father and daughter are sitting on a seesaw that is 2 meters long. the father has a weight of 600N and the daughter has a weight of 150N. Calculate where the father has to sit to balance the child who is sitting on the other side.

Answers

the father has to sit 0.5meter away from the kid because he is a 3/4 heavier that the kid

all the distances from the curved surface are measured from the:
a) pole
b) centre of curvature
c) focus
d) radius of curvature
plz reply

Answers

Pole is the answer.

Actually when we measure, we use metre scale and thread. But since option doesn't have it, so Pole is the answer . Because all curved surfaces has a pole . So, we can directly measure around it.

Hope it helps you

if rechargeable cell is being charged from a source of EMF the EMF of cell during charging is
A. always equal to its terminal potential difference
B. always greater than its terminal potential difference
C. always less than its terminal potential difference​
D. either equal or less than its terminal potential difference

Answers

Answer:

a

Explanation:

I think bec. I am in small school

a) A car accelerates uniformly at 3.7 m s⁻² as it passes a stationary road train. The initial speed of the car is 30 m s⁻¹, and it reaches the speed limit of 130 km h⁻¹ as it passes the front of the cab. Calculate the length of the road train. Give your answer to 3 significant figures. include units in your answer.
b) The braking distance of a road train travelling at 15 m s⁻¹ is 70 m. Assuming that the same deceleration is applied at all speeds, calculate the braking distance of a road train travelling at 25 m s⁻¹

Answers

(a) The length of the train is 54.6 m

(b)  The braking distance of the road train is 194.44 m

The given parameters:

acceleration of the car, a = 3.7 m/s²

initial velocity of the car, u = 30 m/s

final velocity of the car, v = 130 km/h = 36.11 m/s

To find:

the length of the train

The length of the train is the distance travelled by the car

The distance traveled by the car is calculated as:

[tex]v^2 = u^2 + 2as\\\\2as = v^2 - u^2\\\\s = \frac{ v^2 - u^2}{2a} \\\\where;\\\\s \ is \ the \ distance \ travelled \ by \ the \ car\\\\s = \frac{(36.11)^2 - (30)^2}{2\times 3.7} \\\\s = 54.585 \ m\\\\s \approx 54.6 \ m[/tex]

Thus, the length of the train is 54.6 m

(b) The braking distance of a road train travelling at 25 m s⁻¹

[tex]a = \frac{v_1^2}{2s_1} = \frac{v_2^2}{2s_2} \\\\Given;\\\\s_1 = 70 \ m\\\\v_1 = 15 \ m/s\\\\v_2 = 25 \ m/s\\\\s_2 = ?\\\\2s_2v_1^2 = 2s_1v_2^2\\\\s_2 = \frac{ 2s_1v_2^2}{2v_1^2} \\\\s_2 = \frac{s_1v_2^2}{v_1^2} \\\\s_2 = \frac{70\times 25^2}{15^2} \\\\s_2 = 194.44 \ m[/tex]

Thus, the braking distance of the road train is 194.44 m

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2000 Pieces of paper are used everyday at a local school. Each piece of paper is 600cm^2. Convert the area of all the paper used in one day to m^2. The answer is 120 m^2 someone please help me understand this with dimensional analysis?

Answers

here u go, u can use simple dimension analysis to solve this question! :)


A small dog is 10 kg on the surface of the Earth. What is the
dog's weight, in N, on the moon?

Answers

Answer:

4 kg

Explanation:

because when you go the moon you lose 6 times your weight because of the gravitational pull

Answer:

16.3333333 newtons

Explanation:

on earth it would 98 newtons

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