what is a way for scientists to find out about the internal parts of life science specimens

The equivalent measurement of 11.5 milliamperes is 11.5 x 10⁻³ amperes.

The rate of flow of charge per unit cross - sectional area is called electric current. Mathematically -

i = dq/dt

From this -

dq = i dt

∫dq = ∫i dt

Q = it

Current is measured in amperes and is a Tensor quantity.

Given is a circuit that measured a current of 11.5 milli amperes.

Now, the current in milli amperes is used to give the measurement of small amount of current. One milliampere of current is equivalent to -

1 mA = (1/1000) A = 10 ⁻³ A

So, in order to calculate the total current in amperes, we will multiply 11.5 milliamperes by 10 ⁻³ as follows -

11.5 milliamperes [mA] = 11.5 x 10⁻³ amperes[A]

Therefore, the equivalent measurement of 11.5 milliamperes is 11.5 x 10⁻³ amperes.

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The alpha particle experience electric repulsive force forces on the alpha particle could cause this motion.

The nuclear positive charge would exert an electric repulsive force on an alpha particle if it were outside the nucleus, giving it a significant electric potential energy as indicated. According to the slope of the potential energy curve, it would be subject to the inverse square law Coulomb force.

These substances are also known as alpha emitters as a result. The symbol for an alpha particle is typically the Greek letter alpha, after which it is named. Prior to the discovery of beta particles and gamma rays, it was the first form of nuclear radiation.

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Given,

The velocity of the spaceship in as observed by an observer at the earth, v=0.75c

The time interval as observed by the observer on the earth, t₁=2.5 s

The time elapsed in the ship's frame of reference is given by,

On substituting the known values,

Thus the time elapsed for an observer in the spaceship is 3.79 s

The boly pulls on the sign with a force of 60N, according to the magnitude formula f=MxA.

Magnitude means essentially "distance or amount" in the perspective of physics. In terms of motion, it shows the relative or absolute size, direction, or movement of an object. It is employed to describe something's size or scope. Magnitude in physics generally refers to a quantity or quantity.

The magnitude scale, which measures an earthquake's size, is unchanged by distance from the event. Nevertheless, strength reflects the level of rocking brought on by an earthquakes at a specific location and diminishes with distances from the epicentre.

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The mass of the object that has a density of 15g/cm³ and a volume of 3cm³ is 45g.

The density of a substance is the measure of the mass of matter contained by a unit volume. It can be calculated as follows:

Density = mass ÷ volume

This means that the mass can be calculated by multiplying the volume by the density of the substance.

According to this question, an object has a density of 15g/cm³ and a volume of 3cm³. The mass can be calculated as follows:

Mass = 3cm³ × 15g/cm³

Mass = 45g

Therefore, 45 grams is the mass of the object.

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The mass of the substance is 14.58g.

Solution:

Heat  ΔQ = 350J

Initial temperature  T = 10°C

Final temperature [tex]T^{1}[/tex] = 30°C

Change in temperature:  

ΔT = [tex]T^{1}[/tex] - T

= 30 - 10

=  20°C

Specific heat: 1.2 J/g°C

The mass of a substance:

ΔQ = mcΔt

m = ΔQ/cΔt

= 350/1.2 x 20

= 14.58 grams.

Molecular weight is the sum of the average masses of the atoms in the molecules of a substance. It is calculated by adding together the atomic masses of the elements in the substance each multiplied by the index of the molecular formula whether stated or implied. The mass of 1 mole of a substance in 1 gram is called the molar mass.

Find the atomic weight of each element in the formula multiply it by the number of atoms of that element in the compound, and add it to all other elements. This gives the mass in grams of one mole of the molecule. The molar mass of a substance is the mass in grams of one mole of that substance. This mass is the atomic mass of the chemicals that make up the substance, expressed in atomic mass units AMU.

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Answer:

14.58 g or 15 g

Explanation:

The acceleration of the system is 4.6 m/sec² and tension in the rope is 290 N.

The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is acceleration.

Given in the question two masses each of mass 30 kg and 20 kg a boy pull them with force of 500 N in opposite to that there is force of 196 N on 20 kg mass and frictional force 73.5 N on 30 kg mass net force is given as 230.5 N and total mass is 50 Kg .

So, acceleration = 230.5/ 50

                        a = 4.61 m/sec²

And tension on the rope is 290 N.

The acceleration of the system is 4.6 m/sec² and tension in the rope is 290 N.

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A1 = F1 / M

A1 = 5.6 / 2.7 = 2.074 m/s²

A2 = F2 / M

A2 = 1.2 / 2.7 = 0.444 m/s²

Therefore, total acceleration = A1 + A2 = (2.074 + 0.444)m/s²

                                                               = 2.518 m/s²

calculating acceleration using mass and force:

It can be summed up by the following equation: force (N) = mass (kg) x acceleration (m/s2). When a result, an object with constant mass will accelerate directly as force is applied. When two objects of different masses are subjected to the same force, the heavier object accelerates more slowly than the lighter object.

When a physical influence called force is imparted to an item, the object accelerates in the direction the force was applied from. The quantity of substance a thing contains is expressed by its mass, which is expressed in kilograms. The rate at which an object's velocity along the same straight line as the unbalanced force changes is known as its acceleration.

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The kinetic energy of the car is 300,000J

Kinetic energy is the energy of motion.

The formula for kinetic energy is given as [tex]K.E = \frac{1}{2} mv^{2}[/tex]

where m = mass of object , v = speed of object.

An object having some speed and mass will have kinetic energy while an object at rest will not have any kinetic energy since the speed of object at rest is zero.

Since at rest speed is zero, an object has kinetic energy only when it is in motion.

From the question,

m = 1,500kg

v = 20m/s

K.E = (1/2) x 1,500 x 20 x 20

K. E = 300,000J

The car now possess a kinetic energy of 300,000J

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Two valance electrons are occupied by б-bond and four valance electrons occupy π- bonds.

Sigma and pi bonds are types of covalent bonds that differ in the overlapping of atomic orbitals. Covalent bonds are formed by overlapping the atomic orbitals.

Generally, all single bonds are sigma bonds. They can be formed via the following combination of atomic orbitals.

During the formation of pie bonds, the axes of the atomic orbitals are parallel to each other whereas the overlapping is perpendicular to the internuclear axis.

Pi bonds are generally weaker than sigma bonds.

Therefore there are two valance electrons in б-bonds and four electrons in π-bonds.

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According to the picture Vector A and Vector B is shown. After the subtraction the vector difference will be Vector A-Vector B are shown in the picture below. We are using the triangle law for this question.

Vector is a quality that shows that shows that a physics term has two main characteristics. It has value and direction both. The addition and subtraction is not usual for this quantity. It has some specific rules to add and subtract.

Vector is a quantity which have value and direction both. So its subtraction is not going to happen in regular algebraic ways. It has some specific laws. It has mainly two laws that we use,

In these two laws we use the triangle law to subtract the two vectors. Vector A which direction was in fourth quadrant an Vector B which direction is in first quadrant.

After the subtraction we got that the third and the resultant vector was shown in a manner in the picture that makes a perfect triangle.

So according to the discussion we got that, after using the triangle law of subtraction the (Vector A-Vector B) are shown in the picture below.

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The force would be F0=9×F1

Solution

The equation describing the attractive force between two masses (m) separated by a distance (r) is known as Sir Isaac Newton's universal law of gravitation (F=Gmm/r²)

By putting the values given in the question -

F0= Gm1m2÷r²

F1=Gm1m2÷(3r)²

By dividing F0 and F1 we get -

F0=9×F1

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a)The image is attached to the question

b) The weight is 9310 N

c) The normal force is -9310 N

d) The net force is 8110 N

Let s recall that action and reaction are equal and opposite. This implies that the normal force and the weight of the object are the same in magnitude but opposite in direction. Given this, we can now answer the question as shown.

b) The weight of the car is obtained from 950 kg * 9.8 m/s^2 = 9310 N

c) The normal force on the car = -9310 N

d) The force on the car that allows it to go up the hill is the net force which is obtained from ;

9310 N - 1200 N = 8110 N

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I agree with Katelyn's statement

Netwon's first law of motion states that an object will remain at rest or in uniform motion except acted upon by an external (unbalanced) force.

When balanced forces are acting on an object in motion, the object maintains its speed and direction.

This means that balanced forces do not change the speed and direction of an object in motion. We can say that the object is in equilibrium. It either remains at rest or in uniform motion.

Therefore, I agree with Katelyn's statement

By using combined gas law,

P₁V₁/T₁ = P₂V₂/T₂

Boyle's Law, Gay Lussac's Law, and Charles Law are all combined into the Combined Gas Law. According to the Combined Gas Law, a gas's pressure, volume, and temperature must be constant.

The combined gas law's equation is therefore PV/T = K, where P is pressure, T is temperature, V is volume, and K is a constant. To compare two sets of circumstances in one substance, one can modify the combined gas law's formula.

The combined gas law combines the provisions of the Charles, Gay-Lussac, and Boyle laws. It is a combination of the first three laws that were discovered. According to these rules, one thermodynamic variable is related to another while keeping the other variables constant.

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If point 0 is in equilibrium. P and Q values, respectively. 30% Q 10v3N equals 20√3N and 10N

A state of a system in which neither its state of motion nor its internal energy state changes over time It is a state of equilibrium between opposing forces or actions that can be static (as in a body acted on by forces with a zero resultant) or dynamic (as in a reversible chemical reaction when the rates of reaction in both directions are equal).

When a particle's net external force is zero, the particle is said to be in equilibrium. Using Newton's First Law of Motion, we can say that the particle is either at rest or in uniform motion.

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Sir Isaac Newton's three laws of motion are manifested in nearly every activity of everyday life including traffic accidents. From flying birds to racing cars these laws of motion are everywhere. In fact, nearly 99% of all activity in our physical world is usually governed by these laws.

Newton's laws of motion are very important when engineers design airplanes sports equipment cars train toys and more. This article describes Newton's three laws of motion in car accidents. Newton's first law of motion states that when an object is in motion, it will move at the same speed and in the same direction, or if it is at rest, it will continue to move until acted upon by an external force. In other words, objects have a natural tendency to continue doing what they were doing until they respond.

In the absence of an external force, a moving object maintains its original state of motion or remains stationary.  This law is usually called the law of inertia. Newton's second law of motion states that an object subjected to a force experiences an acceleration such that the force is equal to the mass times the acceleration. Mathematically this is expressed as . In other words, the force exerted during a collision is proportional to the mass of the colliding vehicle. This means that the more force a car collides with the more force it applies which means more destruction. The opposite is also true If the mass of the colliding vehicle is less, less force will be applied and there will generally be less destruction.

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The cooperate strategy that represents this is vertical integration.

A corporate strategy is a long-term plan with specific objectives for a business. Although each goal's objective may vary, the main aim of a corporate strategy is to advance the business.

Vertical integration is a tactic that enables a business to streamline operations by directly controlling different stages of the production process instead of depending on outside suppliers or contractors.

Instead of outsourcing these operations, a business might achieve vertical integration by acquiring or forming its own manufacturers, distributors, and retail outlets. However, due of the significant initial capital expenditure needed, vertical integration may be deemed risky with potential drawbacks.

Therefore, vertical integration is the cooperative method that represents "A big appliance maker that has been buying electronic controls from a supplier decides to design and build the controls in-house."

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Answer:

Al

Explanation:

From periodic table: Aluminum

Since the student constructs a catapult that fires a ping pong ball horizontally, the thing that the student do to make the ping pong ball stay in the air longer is to stretch the rubber bank longer before shooting the ball.

Rubber bands serve as the ping pong catapult's power source. Rubber bands are stretched when the catapult arm is pulled back, which causes them to store potential energy.

Rubber bands constrict as soon as the catapult's arm is released, converting their potential energy into the kinetic energy or motion energy of the ping pong ball as it soars through the air. The kinetic energy of an object is determined by its mass (how much weight it has) and velocity (how fast it is going).

Therefore, The heavier object will have more kinetic energy when two things are travelling at the same speed. The object travelling more quickly will have greater kinetic energy if the two objects have the same mass but are moving at different speeds.

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Voltage amplifiers use a voltage input signal and a current output signal. This statement is false.

A voltage amplifier uses a voltage input and a voltage output.

In an electric circuit, the job of a voltage amplifier is to amplify the high input voltage as compared to the low input voltage.

In general, transistor function as voltage amplifiers in a circuit and are used to increase the power, voltage, and current of a signal.

Generally, these amplifiers are used in audio devices and equipment, radio and television broadcasting, wireless communications, and so on.

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The speed of the block after the 2,60 m is determined as 6.38 m/s.

The work done on the block is calculated by applying the principle of Newton's second law of motion to determine the net work done on the block as shown below.

W = F(net)d

where;

F(net) = Fcosθ - Ff

where;

F(net) = 50 cos(30) - 4.2

F(net) = 39.1 N

The speed of the block is calculated by applying the principle of work energy theorem.

K.E = W

¹/₂mv² = F(net)d

mv² = 2F(net)d

v² = [2F(net)d] / m

v = √[2F(net)d] / m]

v = √[2 x 39.1 x 2.6] / 5]

v = 6.38 m/s

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If a hypothetical planet has a radius 2.0 times that of the earth but has the same mass, then the acceleration due to gravity near its surface would be one-fourth of the acceleration due to gravity of the earth.

It can be defined as the force by which a body attracts another body toward its center as the result of the gravitational pull of one body and another.

As given in the problem, a hypothetical planet has a radius 2.0 times that of the earth but has the same mass.

Gravity = GM / R²

            = GM / ( 2R )²

         g' = g / 4

Thus, the acceleration due to gravity near its surface would be one-fourth of the acceleration due to the gravity of the earth.

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The month with the most cost of heating is January followed by February and then December, mainly the winter months when the temperature is extremely cold.

The cost of energy usage is the amount of money spent to purchase or usage energy in a given time period.

The cost of energy usage increases as more and more energy is consumed or usage in heating, cooking, production, etc.

From the given bar graph, we can conclude that the cost of heating the certain house increases in the following months;

January  - $55

February - $49

March - $40

December  - $42

Thus, the month with the most cost of heating will have the tallest bar when compared to other months.

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Apply Boyle's law:

P1 V1 = P2 V2 =P3 V3 = P4 V4

(33.3)(100) = P4 ( 12.5 )

3330 = 12.5 P4

3330/12.5 = P4

P4 = 266.4 kPA

Answer:

A. 266.4 kPa

Answer:

See below

Explanation:

NET forward force =  175 + 125 -140 -120 = 40N

F = ma

40 = 75 * a

a = 40 / 75 = .53 m/s^2   to the right (? <===if they are pulling to the right)

If the pole's height is "h," then the firefighter will experience a net downward force of F = mg - frictional mg-1 force.

Work done to bring him down equals F x h = 1014 x h because F = 93 x 9.8 - 810 = 9114 - 810 = 101.4N.

This is going to become his kinetic energy.

Therefore, 1 mu 2 2 equals 101.4 h, where V = 3.4 m/s, 2x93 X(3.4)2 equals 101.4 h, and h = (933.43.4) / (2x101.4) equals 5.3 m.

Kinetic energy is the power a thing has as a result of motion. Applying a force is necessary if we want to accelerate an object. We must exert effort in order to apply a force. Once the job is finished, energy is transferred to the item, which then moves at a new, constant speed.

The force produced when two surfaces slide against and touch one another is referred to as frictional force. There are a few things that affect the frictional force: The surface texture of these forces and the amount of force pressing them together have the biggest impact.

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Answer:

See below

Explanation:

1/4 d / 2  = time for 2 m/s

3/4d  / 3  = time for 3 m/s

total distance / total time = average speed :

d / [  1/4 d  / 2 m/s   +  3/4 d/ 3 m/s ]     <=====simplify ( 'd' goes away)

1 / [ 1/4 / 2    + 3/4 / 3 ]   =   2  2/3 m/s

Work must be done on the particle to cause it to move to the right at 33 m/s  is 5.54 J

What is work done?

When we apply force "F" to a block, the body moves with some acceleration or, additionally, its speed increases or decreases depending on the direction of the force. The system's kinetic energy changes as speed increases or decreases. Since we are aware that energy cannot be created or destroyed, it must be changed into another form. This perspective refers to it as completed work. When negative energy is finished, the energy declines, and when positive energy is finished, the energy rises. Now, we'll see how to gauge the amount of work done.

Work Done on a Particle:

The change in a particle's kinetic energy is what is referred to as work done on a particle. The particle has an initial kinetic energy if it is originally moving. However, there is also a change in the particle's kinetic energy if its direction of travel changes.

u=29m/s

v=43m/s

from work- energy theorem

W=change in K.E

= 1/2mv^2 -1/2mu^2

= 1/2m(v^2 - (-u)^2)

=0.5*0.011*(43*43-29*29)

W=5.54 J

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