How much force will it take to lift a 54n object if it is on a lever that is 19m long on the side the object is on while i push the 9m long side?.

Answer:

289.8 grams.

Explanation:

When the ice cube melts, it absorbs heat from the water in the dog's dish and undergoes a phase change from solid to liquid at 0.00 °C. The heat absorbed by the ice cube can be calculated using the formula:

Q = m * L

where Q is the heat absorbed, m is the mass of the ice cube, and L is the heat of fusion of water (which is 334 J/g). The heat absorbed by the ice cube is then equal to the heat released by the water, which can be calculated using the formula:

Q = m * c * ΔT

where m is the mass of the water, c is the specific heat capacity of water (which is 4.184 J/g·°C), and ΔT is the change in temperature of the water.

Setting the two formulas equal to each other, we get:

m * L = m * c * ΔT

Solving for m, we get:

m = (c * ΔT * m_water) / L

where m_water is the mass of the water in the dog's dish.

Substituting the given values, we get:

m = (4.184 J/g·°C * (27.0 °C - 18.0 °C) * 2500.0 g) / (334 J/g)

m ≈ 289.8 g

Therefore, the mass of the ice cube was approximately 289.8 grams.

The model that correctly represents the product or products of the chemical reaction is the first one. Thus, the correct option for this question is A.

A chemical reaction may be defined as a type of reaction in which one or more substances that are known as the reactants are considerably converted to one or more different substances that are known as the products.

In a chemical reaction, the molecules or atoms of the substance may always remain the same in the reactant or product. That is the mass of the chemical substance may always remain the same. While model 2 and 4 increases the mass of compound A in the given reaction. So, they are eliminated.

Option 3 is incorrect because when you get a product of any chemical reaction, it may never be separated automatically as described in option C.

Therefore, the model that correctly represents the product or products of the chemical reaction is the first one. Thus, the correct option for this question is A.

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Answer:

The stratosphere is responsible for absorbing the most UV radiation.

Explanation:

Hope it will help you:)

The Stratosphere is responsible for absorbing the most UV radiation.

Thus, the Stratosphere is responsible for absorbing the most UV radiation.

Hence, Option B is the correct answer.

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Given :

Steve walks from his house 5 km South then turns east and walks 2 km. Then he walks 9 km North to his older sister's house. She gives him a ride to his friend Fred's house 2 km West.

To Find :

The total distance covered by Steve .

Solution :

We know , distance is the actual measurement space between two points .

Now , total distance travelled by Steve is the sum of all distance travelled .

\(T=5+2+9+2\\\\T=18\ km\)

So , total distance covered by Steve is 18 km .

Hence , this is the required solution .

The distance Steve traveled is mathematically given as

T=18Km

Question Parameters:

Steve walks from his house 5 km South then turns east and walks 2 km.

Then he walks 9 km North to his older sister's house.

Generally, the total distance has Steve traveled is mathematically given as

T=5+2+9+2

T=18Km

In conclusion, because the distance is the measure of space b/w two points the total distance traveled is

T=18Km

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Answer:

Charge quantization is the principle that the charge of any object is an integer multiple of the elementary charge.

Explanation:

Complete Question

The diagram for this question is shown on the first uploaded image

Answer:

\(x = 4.70 \ m\)     ,   \(y = 0.2803 \ m\)

Explanation:

From the question we are told that

     The initial velocity of the arcade ball is  \(u = 7.0 \ m/s\)

     The time taken by the ball to enter the basket is  \(t = 0.95 \ s\)

Generally the x -component of the initial  velocity is  

            \(u_x = 7 * cos (45)\)    

=>         \(u_x = 4.95 \ m/s\)

Generally the y -component of the initial  velocity is  

            \(u_x = 7 * sin(45)\)    

=>         \(u_y = 4.95 \ m/s\)

  Generally the distance x is mathematically represented as

                 \(x = u_x * t\)

=>              \(x = 4.95 * 0.95\)      

=>              \(x = 4.70 \ m\)    

Generally from kinematic equation the distance y is mathematically represented as

               \(y = u_y * t - \frac{1}{2} * g * t^2\)

=>            \(y = 4.95 * 0.95 - \frac{1}{2} * 9.8 * 0.95^2\)

=>            \(y = 0.2803 \ m\)

To turn the clock ahead for daylight saving time, you manage to recall the rather complex system by which you can advance the clock in car,

This skill is an example of your procedural memory.

Which is a type of long-term memory that is responsible for knowing how to do things, also known as motor skills.

Procedural memory is responsible for remembering how to perform a task, such as advancing the clock in your car for daylight saving time.

It is a complex system that involves coordination between different parts of the brain, including the basal ganglia, the cerebellum, and the motor cortex.

Procedural memory is typically acquired through repetition and practice, and is often unconscious, meaning that we don't have to consciously think about how to perform the task.

So, in this case, the skill of advancing the clock in your car is an example of your procedural memory.

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Answer: C

Explanation:

if the mass stays constant, measuring mass would be useless (A is wrong). while the distance is good knowledge, it isnt nessecary in solving for acceleration (which we need to find the force using F=ma). only time is nessecary, since it is used in all kinematics equations. use the one without distance (v=v0+at) (eliminating B) to get a.

Direction is useless, probably common sense

The mixing ratio is 6.

To find the answer, we have to know about the mixing ratio.

                         \(Rh=\frac{w}{w_s} *100\)

where; w is the mixing ratio and w(s) is the saturation mixing ratio.

                                    \(Rh=25\\w_s=24\)

                            \(w=\frac{Rh*w_s}{100} =\frac{25*24}{100}=6\)

Thus, we can conclude that, the mixing ratio is 6.

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The theory drives this teacher's practices is Behaviorist.

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Question:

In a science class, the teacher sets the room up with a variety of objects such as tubs of water, aluminum foil, and clay. The question on the board is: What makes objects float? Students enter the class and, in small groups, explore the materials. make decisions regarding what data to collect. and discuss the data's meaning. Students are urged to think, ask questions, and draw conclusions on their own. What theory drives this teacher's practices? Select one

A. Behaviorist/Behavioral

B. Humanistic

C. Cognitive

D. Nativist/Innatist

The correct option is (A) Behaviorist/Behavioral.

Behaviorist theory informs this teacher's methods.

Who are the behaviorists?

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I understand that the question you are looking for is "In a science class, the teacher sets the room up with a variety of objects such as tubs of water, aluminum foil, and clay. The question on the board is: What makes objects float? Students enter the class and, in small groups, explore the materials. make decisions regarding what data to collect. and discuss the data's meaning. Students are urged to think, ask questions, and draw conclusions on their own. What theory drives this teacher's practices? Select one

A. Behaviorist/Behavioral

B. Humanistic

C. Cognitive

D. Nativist/Innatist"

(1) The magnitude and direction of the average acceleration of the baseball while it is in contact with the bat is 8,000 m/s² east.

(2) The magnitude of the average force the Bat exerts on the ball while they are in contact is 1,120 N.

The given parameters:

The magnitude and direction of the average acceleration of the baseball while it is in contact with the bat is calculated as follows:

\(a = \frac{v- u}{t} \\\\a = \frac{35 - (-45)}{0.01} \\\\a = \frac{80}{0.01} \\\\a = 8,000 \ m/s^2\)

The magnitude of the average force the Bat exerts on the ball while they are in contact is calculated as follows;

\(F = ma\\\\F = 0.14 \times 8,000\\\\F = 1,120 \ N\)

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Electric fields can be visualized by drawing force lines, which give an indication of the direction and strength of the electric field at different points in space.

Force lines, also known as electric field lines or lines of force, are imaginary lines that represent the direction in which a positive test charge would move if placed in the electric field. The lines always point away from positively charged objects and towards negatively charged objects.

The closer the lines are to each other, the stronger the electric field is at that point. The spacing of the lines indicates the strength of the electric field. Therefore, by visualizing the force lines, one can gain an understanding of the nature of the electric field, including its direction, strength, and how it varies in space around charged objects.

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Answer:

recycling aluminum products

Explanation:

I I took this test hope this out and on the test I got this correct

Explanation:

Sound travels from the tour guide to the other of the canyon and then back, thus hearing the echo. The time of 2.0 s represents the time it takes the sound to make a round trip, therefore it takes 1.0 s for the tour guide's voice to reach the other side of the canyon. At 20°C, the speed of sound is 343 m/s therefore the width of the canyon is

\(x = vt = (343\:m/s)(1.0\:s) = 343\:m\)

The canyon in the given question is 340 m wide.

Echo is a reflection of sound that comes to the listener after the direct sound, but with a delay. The delay is inversely proportional to the separation between the source and the listener of the reflecting surface.

To hear the echo, the following conditions must be met:

There must be a minimum of 17 meters between the sound source and the reflecting surface, and there must be at least 0.1 seconds between the original sound and its echo.

Given parameters:

When a tour guide shouts across a canyon, her echo is heard 2.00 s later. That means, in two seconds the sound goes to other wall of canyon and reflected back.

At a temperature of 20 °C, velocity of sound is 340 m/s.

So, the wide is the canyon be = velocity of sound × time/2

= 340 m/s ×2 s/2s = 340 m.

Hence, the wide is the canyon be 340 m.

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Answer: In SI units, G has the value 6.67 × 10-11 Newtons kg-2 m2. The direction of the force is in a straight line between the two bodies and is attractive. Thus, an apple falls from a tree because it feels the gravitational force of the Earth and is therefore subject to “gravity”.

Explanation:

The radius of the circular path of a charged particle moving at right angles to a uniform magnetic field is directly proportional to the magnitude of the particle's momentum.

Hence, the correct option is D.

The radius of the circular path of a charged particle moving at right angles to a uniform magnetic field is directly proportional to the magnitude of the particle's momentum.

Mathematically, we can express this relationship as:

r ∝ p

Where:

r is the radius of the circular path,

p is the momentum of the charged particle.

This relationship can be derived from the equation for the centripetal force experienced by a charged particle moving in a magnetic field, given by:

F = qvB

where:

F is the centripetal force,

q is the charge of the particle,

v is the velocity of the particle,

B is the magnitude of the magnetic field.

Since the centripetal force is also equal to mv²/r, where m is the mass of the particle, we can equate these two expressions:

mv²/r = qvB

Simplifying the equation, we find:

mv = qBr

From this equation, we see that the radius of the circular path (r) is directly proportional to the momentum of the charged particle (mv), which is a product of the mass and velocity.

Hence, the correct option is D.

The given question is incomplete and the complete question is '' To which of the following quantities, the radius of the circular path of a charged particle moving at right angles to a uniform magnetic field is directly proportional ?

A. energy of the particle

B. magnetic field

C. charge of the particle

D. momentum of the particle.''

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Answer:

What is freezing point?

A liquid's freezing point is determined at which it turns into a solid. Corresponding to the melting point, the freezing point often rises with increasing pressure. In the case of combinations and for some organic substances, such as lipids, the freezing point is lower than the melting point. The first solid which develops when a combination freezes often differs in composition from the liquid, and the development of the solid alters the composition of the remaining liquid, typically lowering the freezing point gradually. Utilizing successive melting and freezing to gradually separate the components, this approach is used to purify mixtures.

What is melting point?

The temperature at which a purified substance's solid and liquid phases may coexist in equilibrium is referred to as the melting point. A solid's temperature goes up when heat is added to it until the melting point is achieved. The solid will then turn into a liquid with further heating without changing temperature. Additional heat will raise the temperature of the liquid once all of the solid has melted. It is possible to recognize pure compounds and elements by their distinctive melting temperature, which is a characteristic number.

The difference between freezing point and melting point:

Reference: Berry, R. Stephen. "When the melting and freezing points are not the same." Scientific American 263.2 (1990): 68-75.

Answer:

Explanation:

The mass of the object can be found by using the formula

\(m = \frac{f}{a} \\ \)

f is the force

a is the acceleration

From the question we have

\(m = \frac{147}{9.8} \\ \)

We have the final answer as

Hope this helps you

Answer:

The momentum of the falling apple is transferred to the Earth.

Explanation:

Answer:

conduction i think

Explanation:

Answer:Conduction

Explanation:

If the same force is applied to an object with a small mass, it will experience a greater acceleration due to less inertia and the ease with which it can be accelerated. In contrast, an object with a larger mass will require more force to achieve the same acceleration.

According to Newton's Second Law of Motion, the acceleration of an object is directly proportional to the force applied to it and inversely proportional to its mass. Mathematically, we can express this relationship as:

acceleration = force / mass

Therefore, if the same force is applied to an object with a small mass, it will experience a greater acceleration compared to an object with a larger mass. This is because the smaller mass results in less inertia, meaning it requires less force to cause a given acceleration. In other words, a smaller mass will accelerate more easily when the same force is applied to it. For example, if you apply the same force to a baseball and a bowling ball, the baseball will accelerate much more quickly because it has a smaller mass than the bowling ball. Conversely, if you apply the same force to a truck and a car, the car will accelerate more quickly because it has a smaller mass than the truck.

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Answer:

The acceleration of proton is 5.56 x 10^10 m/s^2 .

Explanation:

initial velocity, u = 0

Electric field, E = 580 N/C

final speed, v = 10^6 m/s

(a) Let the acceleration is a.

According to the Newton's second law

F = m a = q E

where, q is the charge of proton and m is the mass.

\(a= \frac{q E}{m}\\\\a = \frac{1.6\times10^{-19}\times 580}{1.67\times 10^{-27}}\\\\a= 5.56\times 10^{10} m/s^2\)

Answer:

\(E = 6.63\times10^{-11} J\)

Explanation:

We know that energy of a photon

E =hυ = hc/λ

h = planks constant,  = 6.63×10^{-34} J s

υ= frequency of the wave, c= speed of light, = 3×10^8 m/s

λ = wavelength = 3×10^{-15} m

\(E = [6.63\times10^{-34}\times3\times10^8]/3\times 10^{-15}\)

\(E = 6.63\times10^{-11} J\)

Answer:

Technician A is correct

Explanation:

The statement "charging system is needed to keep the battery fully charged and recharge the battery after starting" is correct

from technician's B point of view, that the charging system supplies electrical current needs after engine start is incorrect.

In-fact the charging system is dedicated to the battery alone, the electrical needs of the system is gotten from the battery.

Adults typically have a resting heart rate between 60 and 100 beats per minute. A lower resting heart rate typically indicates improved cardiovascular fitness and more effective cardiac function.

Depending on the individual, a typical resting heart rate ranges from 60 to 100 beats per minute. Your heart can pump more blood with each contraction when it is healthy and functioning at a lower resting heart rate since it doesn't have to work as hard to keep a regular beat.

Your heart rate changes throughout the day depending on your degree of activity and your mood. While sleep can lower heart rate, stress and activity can boost it. When sleeping, a typical heart rate is frequently between 40 and 50 beats per minute (bpm),

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Grand unified force thermodynamically isolated its internal energy as the universe expanded and cooled at an age about.

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The tasks that refraction can be dangerous is when a person is always on a swimming pool that does looks shallower than it was due to the light that is being emitted from the bottom of the pool and thus bends at the surface as  a result of refraction of light and also when a person is Working in the light-production crew.

Two papers from very different parts of the world, Australia and India, published in the late 1990s, emphasized the fact that uncorrected refractive error was a significant contributor to blindness and the primary cause of vision impairment.

Therefore, When the retina is not properly illuminated by the eye, refractive error occurs. It might result in vision blur. If your child exhibits any symptoms of eye issues, you should take them to an eye doctor for a thorough eye examination.

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Answer:

2.04 Meters

Explanation:

Explanation:

what is the colour of our blood

Answer:

Q = Q0exp -t/RC

Explanation:

Q0 initial chage

RC time constant

t time

Answer: the answer is d $19.95

Explanation:

chicken dinner: 6.95 x 3 = 20.85

burger: 5.75

20.85 + 5.75 = 26.6

26.6 divided by 4 (bc theres 4 ppl and the bill needs to be split equally)

26.6/4= 6.65

and since 3 friends are paying him back u gotta do 6.65 x 3 = 19.95