What is determined by calculating the slope of the position vs time graph?.

Since we assume that the entire lower surface of the bed makes contact with the floor it will exert 1.18*10^4 N of force.

Solution:

Find the volume of water filling the mattress:

V = (2.00 m)(2.00 m)(0.300 m)

   = 1.20 m^3

M = pV = (1000 kg/m^3) (1.20 m^3) = 1.20*10^3 kg

weight of the bed

Mg = (1.20*10^3) (9.8 m/s^2) = 1.18*10^4 N

The force perpendicularly applied to an object's surface divided by the area over which it is dispersed is known as pressure. The pressure as compared to the surrounding air pressure is known as gauge pressure. To express pressure, a variety of units are employed.

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Answer:

Explanation:

Allison can measure the mass of the rock by using a scale. An electronic beam balance will be able to give her the mass of the rock to a fairly accurate degree.

To go about measuring the volume of the rock, an indirect approach has to be adopted since the rock is not regular in shape.  Allison would have to adopt a principle that explains that the volume a solid body displaces when immersed in a pool of liquid, is directly equal to the volume of the solid itself.

This means that if the stone is placed in a beaker of water containing an already measured volume of water, the increase in the volume of the water when the stone is immersed is equivalent to the volume of the stone.

Answer:

B . 68.7 N

Explanation:

Given in the question that;

Force = 22 N

Mass = 7.0 kg

Velocity = 4.0 m/s

Gravitational force is the weight of wooden block , calculated as mass times acceleration due to gravity.

F= m* a

F= 7 * 9.81

F= 68.67 N

F= 68.7 N

The given statement is true because the light from two different flaslihgts do not produce interference pattern because it's incoherent.

Answer:

Its A

Explanation:

Thats because federalists wanted to take away rights. But the fathers wanted to definitely ensure that each person had equal rights and liberty.

Answer:

it is called fluid friction.

A football is kicked at a velocity of 15m/s at an angle of 25 to the horizontal. Calculate:

a) total flight time. 1.29s

b) the maximum height. 2.05m

c) the range of the ball. 17.58m

Velocity defines the route of the movement of the body or the object. speed is basically a scalar quantity. speed is basically a vector amount. it is the rate of exchange of distance. it is the fee of trade of displacement.

Range - The extent to which or the bounds among which variant is feasible: the variety of steel expenses; a huge variety of styles. the quantity or scope of the operation or motion of some thing: inside variety of imaginative and prescient. the gap to which a projectile is or can be dispatched through a weapon.

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Answer:

The material is called a Lubricant.

Hope it helps! ☺️

Answer:

Here is the answer. Hope this helps you!

Explanation:

Average velocity is the sum of initial and final velocity divided by 2. I t is the same as total Displacement divided by total time. Average velocity is calculated when the body is in non-uniform motion (also when total displacement and time is not given). The formula is as follows:

u + v/2 = \(v_{av}\)

Average velocity = Average speed

during motion in a straight line. therefore, the above mentioned formula can be used for calculating average speed as well, when the direction is one and only the same, that is, during motion in a straight line. The S.I unit remains the same-

m/s.

Since velocity is vector, average VELOCITY is also vector. However, Average SPEED is scalar as speed is scalar. both can be equal only when the distance = displacement and when they are following the same direction of motion.

Answer:

We can use Coulomb's law to solve this problem:

F = k * q1 * q2 / r^2

where F is the force between the two charges, k is Coulomb's constant (k = 9 x 10^9 N m^2 / C^2), q1 and q2 are the magnitudes of the charges, and r is the distance between them.

We know the force F, the distance r, and the magnitude of one of the charges q1. We can rearrange the equation to solve for the magnitude of the other charge q2:

q2 = F * r^2 / (k * q1)

Substituting the values we have:

q2 = (250 N) * (0.15 m)^2 / (9 x 10^9 N m^2 / C^2 * 6.5 x 10^-5 C)

Simplifying:

q2 = 8.65 x 10^5 C

Therefore, the magnitude of the other charge is 8.65 x 10^5 C.

Answer:

tura paulo

Explanation:

sry if im wrong ;)

Answer:

i believe the answer is 2.44140625 grams remaining

Answer:

4.88g

Explanation:

We must first calculate how many half-life there are in 18 hours, knowing that each half life takes 2 hours.

18/2 = 9 Half life

Now, knowing this we can calculate the number of grams by applying 9 times the half life.

2500/2= 4.88 grams

Which means that after 18 hours there are 4.88 grams.

The correct answer of branch circuit conductors can be protected by a circuit breaker with a rating no greater than should be 125 amps.

What Size Wire Do We Need for My Breaker?

The accepted system for this measurement is AWG. A smaller wire size is indicated by a greater number in the wire gauge scale, which runs from high to low.

The circuit conductors between the outlet and the final overcurrent device protecting the circuit are referred to as branch circuits (s).

The circuit conductors between the outlet and the final overcurrent device protecting the circuit are referred to as branch circuits (s). If the conductors are on the load side of the final branch circuit overcurrent device, even conductors for a circuit rated at 1000 amps are a branch circuit.

The branch-circuit conductors that supply loads other than those listed in 210.3 and other than the cooking appliances covered by 210.19 must have an ampacity sufficient for the loads served and must not be lower than 14 AWG.

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Answer:

To calibrate a thermometer is to mark a thermometer so that you can use it to measure temperature accurately. A fixed point is a standard degree of hotness or coldness such as the melting point of ice or boiling point of water.

The tension in the horizontal portion of the rope is 39.24 N.  In a system of two blocks connected by a rope passing over two frictionless pulleys, the tension in the rope is the same throughout the rope.

We can use this fact to solve for the tension in the horizontal portion of the rope.

Let T be the tension in the horizontal portion of the rope, as shown in the figure. The weight of each block is given by mg, where m is the mass of each block and g is the acceleration due to gravity. The net force acting on each block is the tension in the rope pulling it up, minus the weight pulling it down:

For the block on the left: T - mg = ma

For the block on the right: T - mg = ma

where a is the acceleration of the system.

Since the blocks are not moving, the acceleration of the system is zero, so we can solve these two equations for T:

T = mg

Substituting m = 4 kg and g = 9.81 m/s^2, we get:

T = (4 kg)(9.81 m/s^2) = 39.24 N

So the tension in the horizontal portion of the rope is 39.24 N.

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Most historians believe that the American presidency was a weak institution until the early twentieth century due to several factors, with the strong presidencies of Andrew Jackson and Abraham Lincoln being exceptions that proved the rule.

Some key reasons include the intent of the Founding Fathers, the limited scope of federal government, and the balance of power among branches.
The Founding Fathers designed the presidency with the intent of avoiding a monarchical or dictatorial system. They sought to create a balanced government with separated powers to prevent an individual from gaining too much authority. Consequently, the early presidency was designed to be relatively weak compared to other branches of government.
Moreover, during the early years of the United States, the federal government's scope was limited. State governments held much more authority, which also contributed to the perception of a weak presidency. Most issues were handled at the state level, and the president's role was mainly to coordinate and represent the nation as a whole.
Additionally, the balance of power among the three branches of government was intended to maintain a check on the presidency. Congress, particularly the Senate, held significant authority and was seen as a counterbalance to the executive branch. The judiciary also played a crucial role in maintaining this balance.
Despite these factors, the presidencies of Andrew Jackson and Abraham Lincoln stand out as exceptions. Jackson's assertiveness in areas such as vetoing legislation and pursuing a strong central government, as well as Lincoln's leadership during the Civil War, demonstrated that a strong presidency could exist within the American system. These examples paved the way for a more powerful presidency in the twentieth century.

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The surface temperature of Betelgeuse is 3,500 K.

Betelgeuse is a red supergiant and one of the brightest stars in the night sky. It is a relatively young star, estimated to be about 10 million years old and is located about 640 light years away from Earth. It is one of the largest stars known and is about 1,000 times larger in radius than our Sun.

Its outer atmosphere has a temperature of about 3,500 K, which is much hotter than the Sun's surface temperature of 5,778 K. The high temperature of the outer atmosphere is due to the fact that Betelgeuse is a red supergiant. In comparison to other stars, red supergiants are among the hottest due to their large surface areas. Betelgeuse is an important star in astronomical studies because of its size and brightness.

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Based on Newton's laws of motion, we can make some general observations about the motion of the object and the forces acting on it.

Newton's first law states that an object at rest will remain at rest and an object in motion will remain in motion at a constant velocity unless acted upon by an external net force.

In other words, if the net force acting on an object is zero, its motion will be uniform and unchanging.

Newton's second law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

In other words, the greater the net force acting on an object, the greater its acceleration will be, and the greater its mass, the smaller its acceleration will be for the same net force.

From the motion diagram at point C, we can observe that the object is moving to the right with a constant velocity, as indicated by the equally spaced dots and arrows.

Therefore, the net force acting on the object must be zero, according to Newton's first law.

Based on this information, we can eliminate any situations that involve a non-zero net force acting on the object.

This includes situations where the object is accelerating or experiencing a net force in a different direction than its motion, such as situations involving FG or CF.

Therefore, the situation that corresponds to the motion shown in the motion diagram at point C must involve a zero net force acting on the object and motion in the same direction as the net force.

Additional information or context may be needed to identify which situation corresponds to this motion.

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Answer:

hgeusugusuisdgfisyhdfygsdyfiusdgoWEGBDSFGVSI

Explanation:

Si

Explanation:

6x+12=48

6x=48-12

6x=36

x=6

From Coulomb's law, the sets of charges of +2 C and -2 C, and +2 C and +2 C are experiencing the strongest forces, both with a magnitude of 36 N.

The strength of the electrostatic force between two charges depends on the magnitudes of the charges and the distance between them, as given by Coulomb's law. The larger the magnitude of the charges and the smaller the distance between them, the stronger the force.

A fundamental characteristic of matter called charge describes how it interacts with magnetic and electric fields. It is commonly measured in coulombs (C), can be positive or negative, and can also be zero.

Protons and electrons are examples of subatomic particles that have electric charge.

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Answer: Different types of fuels have varying compositions and release different amounts of pollutants when burned. Here are some common types of fuels and the pollutants associated with them:

Fossil Fuels:

a. Coal: When burned, coal releases pollutants such as carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter (PM).

b. Petroleum (Oil): Burning petroleum-based fuels like gasoline and diesel produces CO2, SO2, NOx, volatile organic compounds (VOCs), and PM.

Natural Gas:

Natural gas, which primarily consists of methane (CH4), is considered a cleaner-burning fuel compared to coal and oil. It releases lower amounts of CO2, SO2, NOx, VOCs, and PM.

Biofuels:

Biofuels are derived from renewable sources such as plants and agricultural waste. Their environmental impact depends on the specific type of biofuel. For example:

a. Ethanol: Produced from crops like corn or sugarcane, burning ethanol emits CO2 but generally releases fewer pollutants than fossil fuels.

b. Biodiesel: Made from vegetable oils or animal fats, biodiesel produces lower levels of CO2, SO2, and PM compared to petroleum-based diesel.

Renewable Energy Sources:

Renewable energy sources like solar, wind, and hydropower do not produce pollutants during electricity generation. However, the manufacturing, installation, and maintenance of renewable energy infrastructure can have environmental impacts.

It's important to note that the environmental impact of a fuel also depends on factors such as combustion technology, fuel efficiency, and emission control measures. Additionally, advancements in clean technologies and the use of emission controls can help mitigate the environmental impact of burning fuels.

By knowing how intensity relates to distance, we will see that at 4 meters of the engine the intensity is 80.

The sound spreads in a solid angle like all waves, so the intensity of the sound will decrease with the distance squared, this means that:

\(I = \frac{P}{4*pi*r^2}\)

Where P is the sound power, we know that when the student is at 8m from the engine, the intensity measured is 20 (it does not tell the units) so we have:

\(20 = \frac{P}{4*3.14*(8m)^2} \\\\P = 20*4*3.14*(8m)^2 = 16,078.8 m^2\)

Now, if you move 4 meters closer to the engine, your new position will be:

r = 4m

Then we have:

\(I = \frac{16,078.8 m^2}{4*3.14*(4m)^2} = 80\)

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Answer:

80 is the answer! 100% CORRECT!

Explanation:

~Hope this helps! :)

Answer:

The circus performer falls back down to the ground

Explanation:

The question parameters are;

The initial velocity of the circus performer = 21 m/s

The angle in which the performer launches himself = 75° towards the platform

The height of the platform above the ground = 20 m

The horizontal distance of the platform from the springboard = 15 m

The vertical motion of the circus performer is given by the following projectile motion relation;

y = y₀ + v₀·sinθ₀t-1/2·g·t²

Where;

y = Height reached by the circus performer

y₀ = Initial height of the the circus performer (the springboard) = 0 m

v₀ = Initial velocity of the the circus performer = 21 m/s

θ₀ = The angle with which the circus performer launches himself = 75°

t = The time of ,light of the circus performer

g = The acceleration due to gravity

Therefore, when the height is 20 m, we have;

20 = 21*sin(75)*t - 1/2*9.81*t²

Which gives;

21*sin(75)*t - 1/2*9.81*t² - 20 = 0

Factorizing using a graphing calculator, gives;

t = 1.623 or t = 2.513

Therefore, the circus performer passes the 20 m mark twice, in his motion, where the first time is when he is on his way up while the second time is when he is on his way down

The horizontal motion of the circus performer is given by the following projectile motion relation;

x = x₀ + v₀*cos(θ₀)* t

Where;

x₀ = The initial position of the circus performer in relation to the final position = 0

Plugging in the value of t when y = 20, we get;

x = 21×cos(75)×1.623 = 8.82 m, which is less than the 15 m platform distance from the spring board

Checking the other time value, we have;

x = 21×cos(75)×2.513 = 13.66 m which is also less than the 15 m platform distance from the spring board

Therefore, the circus performer misses the platform and falls back down to the ground.

Answer: a fuse wire is a wire of high resistance and low melting point.

Answer:

Acceleration, a = 2.38m/s²

Explanation:

Given the following data;

Mass = 1.01 kg

Force = 2.4N

To find the acceleration;

Force is given by the multiplication of mass and acceleration.

Mathematically, Force is;

\( F = ma\)

Where;

Making acceleration (a) the subject, we have;

\(Acceleration, a = \frac{F}{m}\)

Substituting into the equation, we have;

\(Acceleration, a = \frac{2.4}{1.01}\)

Acceleration, a = 2.38m/s²

Therefore, the magnitude of the acceleration of the ball at the time of the crash is 2.38 meters per seconds square.

Hi there!

We can use the work-energy theorem to solve.

Recall that:
\(E_i = E_f\)

The initial energy equals the final energy (Conservation of Energy). However, we must take into account energy dissipated due to friction in this instance.

The energy lost due to friction is equivalent to the work done by friction. Recall the following:

The work due to a force is:
\(W = F \cdot d \\\)

Since the displacement is in the same direction as the force, the dot-product becomes Fd.

The work due to friction then becomes:

\(W_f = \mu mgdcos\theta\)
The work due to friction is SUBTRACTED from the initial potential energy.

Initial energy = GPE = mgh

Final energy = KE

Therefore:

\(\boxed{mgh - \mu mgdcos\theta = KE}\)

The measure of the amount of friction existing between two surfaces is known as the coefficient of friction.

When you find a coefficient of friction, you’re calculating the resistance to motion at the interface of two surfaces of similar or dissimilar materials.

The power of this friction force depends on the materials that are pressing against one another. For instance, a steel bar will slide much more easily on a sheet of ice than on a slab of concrete. In these examples, the steel-on-ice combination has a much lower coefficient of friction.

Friction can wreck a piping system if it is unchecked. Reducing a pipe’s coefficient of friction is an important way to preserve metal.

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