A medication given to treat ventricular
tachycardia and ventricular fibrillation

The focal length and image height of the concave mirror is 24cm and 4.5cm respectively. So, the correct options are (C) and (E) respectively.

A concave mirror is defined as a reflective surface that is curved inward and away from the light source to reflect light inward at a focal point. Convex mirror is the image formed by a concave mirror shows different types of image depending on the distance between the object and the mirror.

The focal length of the mirror is :

\(1/f = 1/d_o + 1/d_i\)

where, \(d_o\) and \(d_i\) are distances of object and image respectively

For normal mirror\(d_o = d_i = 8\)

For concave mirror \(d_o = 8; d_i = 12\)

1/f = 1/8 - 1/12 (following sign conventions)

f = 24cm

object height = 3cm

Height of the image is 3*12/8 = 4.5cm

Thus, the focal length and image height of the concave mirror is 24cm and 4.5cm respectively. So, the correct options are (C) and (E) respectively.

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Answer:

batmintan ......

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Thermometer can measure the oral temperature of a child within 25 seconds: C. Tympanic membrane thermometer

The thermometer that can measure the oral temperature of a child within 25 seconds is the tympanic membrane thermometer. This type of thermometer is designed to measure the body temperature by detecting infrared radiation emitted by the tympanic membrane (eardrum).

Tympanic membrane thermometers, also known as ear thermometers, are known for their quick and accurate readings. They have a probe that is gently inserted into the ear canal, and within seconds, the thermometer captures the infrared radiation emitted by the tympanic membrane to determine the body temperature.

Compared to other types of thermometers, such as glass thermometers or electronic thermometers with blue-tipped probes, the tympanic membrane thermometer provides a faster measurement time, making it suitable for measuring the oral temperature of a child who may not stay still for a long period.

It is important to follow the manufacturer's instructions and guidelines for proper usage and accurate readings when using a tympanic membrane thermometer or any other type of thermometer.

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The net force on 2 square inches of the tire is 32 pounds.

The net force on 2 square inches of the tire is determined by the difference between the pressure inside the tire and the pressure outside the tire, multiplied by the area of the tire. We can use the formula:

net force = pressure difference x area

First, we need to calculate the pressure inside the tire. Since the tire pressure gauge reads 30 psi, we can assume that this is the pressure inside the tire.

The pressure outside the tire is given as 14 psi.

The pressure difference is therefore:

30 psi - 14 psi = 16 psi

We can now plug this into the formula:

net force = pressure difference x area

net force = 16 psi x 2 square inches

net force = 32 pounds

Therefore, the net force on 2 square inches of the tire is 32 pounds.

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Answer:

(a) h = 5.1 m

(b) v = 14.13 m/s

Explanation:

(a)

We will use the law of conservation of energy. For this situation it states that:

Loss in Potential Energy of Sphere = Gain in Kinetic Energy of the Sphere

mgh = (1/2)mv²

h = v²/2g   --------------- equation (1)

where,

h = height = ?

v = speed at lowest point = 10 m/s

g = 9.8 m/s²

Therefore,

h = (10 m/s)²/(2)(9.8 m/s²)

h = 5.1 m

(b)

using the equation (1)

h = v²/2g

v = √2gh

where,

v = velocity = ?

g = 9.8 m/s²

h = height = 2(5.1 m) = 10.2 m

Therefore,

v = √[2(9.8 m/s²)(10.2 m)]

v = 14.13 m/s

The height from which the sphere was released is 5.1 m

When the height is doubled, the speed of the sphere becomes 14.14 m/s.

The given parameters:

The height from which the sphere was released is calculated as follows;

\(P.E = K.E\\\\mgh = \frac{1}{2}mv^2\\\\gh = \frac{1}{2}v^2\\\\h = \frac{v^2}{2g}\\\\h = \frac{(10)^2}{2(9.8)} \\\\h = 5.1 \ m\)

When the height is doubled, the speed of the sphere becomes;

\(h = \frac{v^2}{2g} \\\\v^2 = 2gh\\\\v = \sqrt{2gh} \\\\v = \sqrt{2 \times 9.8 \times (2 \times 5.1)} \\\\v = 14.14 \ m/s\)

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Answer:

Explanation:

A compass always (or usually always) points to the magnetic north. If you came in from the south east and got lost, it will point north and you can adjust the way you travel by going 90 off of where the compass points. Keep walking on that line until you hit a place that you recognize and there is no more need for the compass.

Answer: The first thing you have to do is locate east on your compass housing. Turn your compass until you see that east lines up directly with your direction of travel arrow. Quite simply, that is the direction you want to walk. You can do this for any direction.

Explanation:

Of course, I'd be happy to help you with writing a lab report about the reaction between pepper and soap in water. In your report, you can include an introduction that explains the purpose of the experiment, which is to observe the interaction between pepper and soap in water.

Next, describe the materials used, such as pepper, liquid soap, and water. Be sure to mention the specific brands or types of soap used, as this can affect the results. In the procedure section, explain how the experiment was conducted. Start by adding a small amount of pepper to a container of water. Then, introduce a drop of liquid soap into the water and observe the reaction. Note any changes that occur, such as the dispersion of the pepper particles or the formation of bubbles.

In the results section, detail the observations made during the experiment. Describe the appearance of the water before and after adding the soap, and note any changes in the pepper particles. Be specific and include measurements or quantities if applicable. Finally, in the conclusion, summarize the findings of the experiment. Explain whether the soap caused the pepper particles to disperse or settle, and discuss the possible underlying chemical reactions or mechanisms involved. Remember to include any calculations, graphs, or tables if necessary, and cite any sources used.

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An opponent moving at a uniform speed of 4.0 m/s is caught by a hockey player standing on his skates on a frozen pond in 8.20 seconds and distance of  134 metres in that time.

Speed is the amount of distance covered in a given amount of time. It refers to how quickly an object is moving. The magnitude of the velocity vector is a scalar variable called speed. An opponent moving at a uniform speed of 4.0 m/s is caught by a hockey player standing on his skates on a frozen pond in 8.20 seconds and 134 metres in that time. It's unclear where it's going. A higher speed denotes a more rapid pace of movement. Lower speed is a sign of slower motion. If it isn't moving at all, it has no speed.

t = -(-6)+((-6)^2 -(4)(-18^2))^1/2)/2 = 8.20sec

X = 0+1/2(4^2)(8.20^2) = 134m

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Answer:

(c) 250

Explanation:

We can start by analyzing the horizontal and vertical motion of the ball separately. Since the ball is projected horizontally, its initial vertical velocity is 0.

Horizontal motion:

Initial horizontal velocity (Vx) = distance/time = 1 km / 4 s = 250 m/s

Final horizontal velocity (Vx) = same as initial velocity, since there is no horizontal acceleration

Vertical motion:

Initial vertical velocity (Vy) = 0

Vertical acceleration (a) = -9.8 m/s^2 (assuming downward direction as negative)

Time of flight (t) = 4 s

Final vertical velocity (Vy) = Vy + a*t = -9.8 m/s^2 * 4 s = -39.2 m/s

Vertical displacement (h) = Vyt + 0.5at^2 = 0 + 0.5(-9.8 m/s^2)*(4 s)^2 = -78.4 m (negative because the ball is falling below the initial height)

Now, we can use the Pythagorean theorem to find the height of the cliff:

h^2 + d^2 = (78.4 m)^2

h^2 + (1000 m)^2 = (78.4 m)^2

h^2 = (78.4 m)^2 - (1000 m)^2

h^2 = 61344 m^2

h = sqrt(61344 m^2) = 248 m

Therefore, the height of the cliff is approximately 248 m. The closest option is (c) 250.

The final velocity of the rock before hitting the ground is 34.42m/s

Velocity of an object can be said as, the rate of change of displacement with respect to time of an object . Its unit is m/s and it is a vector quantity.

V = Δx/Δt

In here , V is velocity ,  Δx is change in displacement and Δt is change in time of an object.

We are given that,

The rock thrown downward with initial velocity = (-u) = -20m/s

The height of the building before and after hitting the ground = -Δy = -40 m

Therefore , to get the value of the final velocity (v) of the rock before hitting the ground , then the equation of motion cab be written as,

v² = u² + 2a(Δy )

Here , (a) is the acceleration due to gravity and taken negative (-9.81m/s²) due downward direction of the building then putting all the values in above equation of motion ,

v² = (-20m/s)² + 2(-9.81m/s²) (-40m)

v² = 1184.42m/s

v = 34.42m/s

Hence, the final velocity of the rock before hitting the ground would be 34.42m/s .

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The Available options are:

A. Award an indirect free kick to Team B for incidental contact.

B.  Award a direct free kick to Team B.

C.  Allow play to continue as the handling was incidental but issue a caution to the player at the next stoppage of play.  

D.  Allow play to continue.

Answer:

Allow play to continue.

Explanation:

IFAB (International Football Association Board) has approved various means to clarify the issue of handball in foodtball.

Hence, some of the cases include:

1. Should the the ball touches a player's hand/arm immediately from their own head/body/foot or the head/body/foot of another player.

2. the ball touches a player's hand/arm close to their body and has not made their silhouette unnaturally bigger.

3. a player is falling and the ball touches their hand/arm when it is between their body and the ground (but not extended to make the body bigger).

4. Additionally, should the goalkeeper attempt to clear a ball from a teammate but fails, the goalkeeper is allowed to handle the ball.

Hemce, Since a14 who did not see the ball coming and the ball strikes her in the back of the hand as her hand is at her side. the proper call would be to: ALLOW PLAY CONTINUE

As a result, when you raised your speed form 5 km/h into 10 km/h, you increased the kinetic energy from a factor of 4.03.

The energy of motion is kinetic energy, which can be observed in the motion of an object or subatomic particle. All particles & moving objects contain kinetic energy. When something moves, whether it's a person walking, an baseball flying through the air, an piece of bread falling out of a table, or charged particles inside an electric field, it has kinetic energy.

Radiant, thermal, acoustic, electrical, and mechanical kinetic energy are the five main categories.

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Answer:

62400 cm

Explanation:

1 m = 100 cm

624m = 62 400 cm

Answer:

Vf = Vi + a t       fundamental equation

-60 m/s= Vi - 9.8 m/s^2 * 6 sec      taking upward direction as positive

Vi =58.8 m/s - 60  m/s = -1.2 m/s   so the coin was initially thrown downward

As a check take the downward direction as positive

Vf = 1.2 m/s + 58.8 m/s = 60 m/s  

Answer:

When displacement vectors are added, the result is a resultant displacement. But any two vectors can be added as long as they are the same vector quantity. If two or more velocity vectors are added, then the result is a resultant velocity. If two or more force vectors are added, then the result is a resultant force.

In the painting "Let My People Go" by Aaron Douglas:

1. Limited palette.

2. The colors used in the work of art are low-key (shades)

3. The light source in the work of art appears to be coming from the top left corner of the painting. The shadows are located on the right side of the objects and figures, creating a sense of depth and dimension.

4. The artist used asymmetrical balance in the painting.

5. The emphasis in the work of art is on the central figure, who is depicted with arms outstretched and appears to be leading the people.

6. The size of the objects and figures in the work of art varies. However, they are not life size and should be described as small.

"Let My People Go" is a painting by Aaron Douglas that was created in 1935. The painting depicts a scene from the biblical story of Moses leading the Israelites out of slavery in Egypt.

In the painting, Aaron Douglas uses his signature style of African American modernism, incorporating geometric shapes, silhouettes, and a limited color palette.

The central figure, presumably representing Moses, is depicted with arms outstretched, appearing to lead the people. Other figures in the painting seem to be looking up to the central figure, possibly seeking guidance or inspiration.

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Answer:

0.70 g/cm3

Explanation:

Step 1 : weight ball to get the mass,

step 2 : measure the ball to find the length,

step 3 : multiply the length three times to calculate the volume,

step 4 : divide the mass with the volume to get the density.

Answer: 0.73

Explanation:

Our atmosphere is transparent to solar radiation, but it traps the energy that causes the greenhouse effect because the solar energy absorbed by Earth is reradiated as longer-wavelength radiation.

The atmosphere is transparent to incoming solar radiation, which is mostly visible light and short-wavelength radiation. However, the Earth absorbs some of this solar radiation and heats up.

The Earth then radiates this heat energy back out to space as longer-wavelength radiation, mostly in the form of infrared radiation. The greenhouse gases in the atmosphere, such as carbon dioxide and water vapor, are able to absorb this longer-wavelength radiation and trap some of the heat energy in the atmosphere, causing the greenhouse effect.

Hence, this is why the atmosphere is transparent to solar radiation but traps the energy that causes the greenhouse effect.

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Answer:

Volleyball was invented in 1895 by William G. Morgan, physical director of the Young Men's Christian Association (YMCA) in Holyoke, Massachusetts.

Answer:

Explanation:

540

Answer: 1. flushing the toilet,

               2. oil popping in a pan,

                3. the clicking of a mouse on a computer,

Explanation: Lu-.v u

The weather that is least likely to occur when a cold air mass moves in and overtakes a warm front in the presence of a low-pressure system is clear skies ( D ).

When a cold air mass moves in and overtakes a warm front in the presence of a low-pressure system, it is called as occluded front. During this the colder air is pushed beneath the warmer air. Depending on the direction of occlusion, it can be of two types of of occluded fronts such as

During occluded fronts the possible weather conditions are

Therefore, the weather that is least likely to occur with these conditions is clear skies ( D ).

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Answer:

W = 1750 N

Explanation:

Given that,

A shopper in a supermarket pushes a cart with a force of 35 N directed parallel to the ground.

We need to find the work done by the shopper on the cart as the shopper moves along a 50.0 m length.

Let W is the work done. As the force is parallel to the ground, angle between force and distance is 0 degrees.

W = Fd

W = 35 N × 50 m

= 1750 N

So, the work done by the shopper on the cart is 1750 N.

The work done on the puck is -25 J, after  3 seconds, the puck comes to a stop and has no more kinetic energy.

Work done is described  as the amount of force needed to move an object a certain distance.

The work-energy principle states that the work done on an object is equal to the change in its kinetic energy.

The change in kinetic energy is:

ΔK = Kf - Ki = 0 - 25 = -25 J

Note that the  negative sign indicates that the kinetic energy of the puck decreased.  

W = ΔK = -25 J

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Kinematics is the branch of classical mechanics concerned with the study of motion, rather than the forces causing that motion. This statement is false.

Kinematics is a fundamental branch of physics that focuses specifically on describing and analyzing the motion of objects, independent of the forces acting upon them. It deals with concepts such as position, velocity, acceleration, and time.

By studying these quantities, kinematics provides a framework for understanding how objects move and how their motion can be mathematically described.  However, forces and their effects on motion are not directly addressed in kinematics.

That aspect falls under the domain of dynamics, another branch of classical mechanics that investigates the causes of motion. Therefore, kinematics is primarily concerned with the description and mathematical representation of motion, rather than forces and their effects.

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Answer:

True

False

False

True

True

True

False

True

True

Explanation:

The marking of the question with respect to true or false is as follows:

The different parts of the earth's surface involve the structure of the earth which is divided into four major components: the crust, the mantle, the outer core, and the inner core. Each layer has a unique chemical composition, and physical state, and can impact life on Earth's surface.

Earth's crust is divided into two types: oceanic crust and continental crust. The transition zone between these two types of the crust is sometimes called the Conrad discontinuity.

The thickness of different layers of Earth's surface may significantly include, Crust - 5 to 70 km thick, Mantle - 2,900 km thick, Outer Core - 2,200 km thick, and Inner Core - 1,230 to 1,530 km thick.

Therefore, the marking of the question with respect to true or false is well mentioned above.

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Answer:

Telescope, Probware, etc,..

Answer: probeware

Explanation:

the answer is probeware

if you mean by the options,

A. a ruler

B. a thermometer

C. a beaker

D. probeware

U₂ = 0 V. The lamp (L₂) is short circuited, meaning that there is no resistance between its terminals. As such, the voltage across its terminals must be zero.

Resistance is a concept in physics that measures the opposition to the flow of electric current, heat, light, sound, or any other form of energy or matter. It is the measure of how much an object, material, or system resists the flow of electric current, heat, light, sound, or any other form of energy or matter.

a) U₂ = 0 V. The lamp (L₂) is short circuited, meaning that there is no resistance between its terminals. As such, the voltage across its terminals must be zero.

b) U₁ = 12 V. Since the generator is providing a constant voltage of 24 V across its terminals, the voltage across the terminals of (L₁) will be half of this, i.e. 12 V. As the lamps are identical, the current I' through the circuit will also be 0.6 A.

c) (L₁) may burn out due to the large amount of current it is carrying. If the current is too high, it may exceed the rated capacity of the lamp and lead to its failure.

d) (L₁) does not burn out because the circuit includes a fuse. The fuse is designed to break the circuit in the event of an excessive current, thus protecting the lamp from burning out. When the fuse blows, the circuit is broken and the lamp will be off.

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