please help its in science CER, 30 points

To raise the automobile with a hydraulic lift, a force of approximately 19,000 N must be applied to the piston.

In a hydraulic lift, the principle of Pascal's law is applied, which states that pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and the walls of its container. By utilizing this principle, a smaller force applied to a smaller piston can generate a larger force on a larger piston.

In this scenario, the force needed to lift the automobile can be calculated using the formula:

\(\frac{F_{1}}{A_{1}} =\frac{F_{2}}{A_{2}}\)

where \(F_{1}\) is the force applied to the piston, \(A_{1}\) is the area of the piston, \(F_{2}\) is the force generated on the larger piston (required to lift the automobile), and \(A_{2}\) is the area of the larger piston.

Given the radius of the shaft (small piston) as 0.08 m and the radius of the piston as 0.01 m, we can calculate the forces applied and generated as follows:

\(A_{1} = \pi (0.08)^2\\A_{2}= \pi (0.01)^2\)

\(\frac{F_{1}}{A_{1}} =\frac{F_{2}}{A_{2}}\)

Simplifying the equation and substituting the values, we can solve for \(F_{2}\):

\(F_{2}=\frac{F_{1}A_{2}}{A_{1}}\)

Plugging in the values, we find:

\(F_{2}=\frac{F_{1} \pi (0.01)^2 }{ \pi (0.08)^2} \\F_{2}= \frac{F_{1}\times 0.0001}{0.0064} \\F_{2}= 0.015625 \times F_{1}\)

Given that the mass of the automobile is 1520 kg and the acceleration due to gravity is \(9.8 \hspace m/s^{2}\), we can equate \(F_{2}\) to the weight of the automobile:

\(F_{2}= mg\\0.015625\times F_{1}= 1520\times 9.8\)

Solving for \(F_{1}\), we find:

\(F_{1}\approx \frac{1520\times 9.8}{0.015624} \\F_{1} \approx 19072 \hspace N\)

Therefore, a force of approximately 19,000 N must be applied to the piston in order to raise the automobile using the hydraulic lift.

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Answer:

D Hookworm

Explanation:

Answer:

Explanation:

1.B

2.C

3.C

4.B

(1)  While still water is immobile, currents have their momentum.  the correct option is (D). (2) He was among the first to investigate the mechanics of the moving body. The correct option is (C). (3) One is in motion, as both the ball and the racquet add momentum. The correct option is (C). (4) The statement is true. The correct option is (A).

(1)

According to Newton's first law of motion, an object at rest will remain at rest, and an object in motion will continue to move at a constant velocity unless acted upon by an external force. Swimming in a pool (enclosed water) is very motionless, and the swimmer can move through it with little interference from outside forces. In the ocean or in water with a current, however, the water itself is moving, and the swimmer must spend greater effort to overcome the force of the current and make progress.

Hence, the correct option is (D).

(2)

Leonardo DaVinci's work is important for anyone interested in body mechanics since he was among the first to conduct substantial research on human anatomy and the mechanics of the body in action. His anatomical drawings and analyses of muscles and joints provided important insights into how the human body works.

Hence, the correct option is (C).

(3)

Newton's third law of motion states that for every action, there is an equal and opposite reaction. When the tennis ball strikes the racquet, it exerts a force on the racquet, which in turn produces an equal and opposite force on the ball. When the racquet moves, it imparts momentum to the ball, causing it to travel further.

Hence, the correct option is (C).

(4)

Good form becomes a habit when you learn to lift weights with optimal body mechanics. Proper body mechanics in weightlifting reduce the danger of injury while increasing the efficiency and effectiveness of the workout. Good form becomes established in your muscle memory with repeated practice, making it simpler to perform the movements correctly over time.

Hence, the correct option is (A).

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Answer:

2.8

Explanation:

power=work done/time

so, to calculate time

we know,

time(s)=work done(j)/power(w)

=350/125

=2.8

The equation of GPE is mgH, where m is mass, g is gravitational acceleration, and H is the height.

If we're solving for the change in GPE, then:

∆\(U_{g}\) = mg∆H

Input our given values for m and g:

∆\(U_{g}\) = 0.25 * 9.80 * ∆H

The book falls from 2 meters high to 0.5 meters high, so:

∆\(U_{g}\) = 0.25 * 9.80 * (2.0 - 0.5)

∆\(U_{g}\) = 0.25 * 9.80 * 1.5

∆\(U_{g}\) = 3.675 (J)

Adjust for significant figures:

∆\(U_{g}\) = 3.7 (J)

The change in gravitational potential energy was 3.7 (J)

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If one element of a series circuit fails, current ceases to flow completely is accurate.

A circuit is a closed conduct for electricity to travel through and is made up of parts like wires, resistors, capacitors, and transistors that regulate the flow of energy.

The components of a series circuit are connected in a line, the current passes through each one in turn. A broken circuit results from one component failing or being open, which stops the electricity from flowing at all. This is because a series circuit only has one path for the current to go, so if one component breaks down, the circuit as a whole is disturbed.

However, the first claim that series circuits are typically far more difficult to construct than straightforward parallel circuits is untrue. Series circuits just need components connected in a straight line, making them comparatively easy to build. It is also true that in a series circuit, electrons can only flow in one direction.

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Answer:

Help with what??

Explanation:

Explanation:

there is no question to answer..

Maximum heigh: 1.496 m

(This number is not exacte I truncated it)

Explanation:

Data:

mass : m = 0.003 kg

spring constant : k = 220 N/m

amount of compression: x = 2 cm = 0.02 m

heigh : h = ?

accelaratiom due to gravity : g = 9.8ms^-2

Potential Energy : PE = ?

Since you'll be converting the PE to KE, you'll use 2 formulas.

Formulas:

Solution:

The average kinetic energy of the substance's particles is its temperature.

The average kinetic energy of a substance's particles is inversely correlated with that substance's temperature, according to the kinetic-molecular hypothesis.

When a substance is heated, some of the energy received is retained by the particles, while other energy quickens the motion of the particles. The material's temperature increases as a result of this.

The average kinetic energy of a substance's particles is directly proportional to the substance's temperature. These particles must move more quickly as the temperature rises because their mass is constant.

Lowering the system's temperature causes a decrease in a particle's kinetic energy.

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In order to find the magnitude of the electric field at the origin, you need to use the equation E = q/4πεr², where q is the charge, ε is the permittivity of space, and r is the distance from the origin.

To calculate the electric field, you must first determine the charge of the particle, then determine the distance to the origin, and finally, use the equation to calculate the magnitude of the electric field.

Once you have the magnitude of the electric field at the origin, you can then use it to explore the behavior of other electric fields in the area.

To calculate the magnitude, you must first determine the values of k, q, and r, then plug them into the equation and solve. The resulting answer will be the magnitude of the electric field at the origin.

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If the bottle is dropped from rest at a height of 1.2 m above the ground, it will take about 0.49 seconds for the water bottle to hit the ground by using the equation of motion.

To calculate the time it will take for the water bottle to hit the ground, we need to use the equation for motion under constant acceleration, which is the equation t = (2d/g)(1/2) is derived from the kinematic equation of motion, which relates the distance fallen (d), the initial velocity (vo), the final velocity (vf), acceleration (a), and time (t) in the following way: vf2 = 2a*d + vo2

t = (2*d / g)^(1/2)

where t is the time, d is the distance fallen, and g is the acceleration due to gravity (approximately 9.8 m/s2).

Plugging in the given values, we get:

t = (2 * 1.2 m) / 9.8 m/s^2

t = 0.49 s

So it will take about 0.49 seconds for the water bottle to hit the ground if it's dropped from a height of 1.2 meters above the ground.

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Answer:

The tendency of an object to resist changes in its state of motion varies with mass. Mass is that quantity that is solely dependent upon the inertia of an object. The more inertia that an object has, the more mass that it has. A more massive object has a greater tendency to resist changes in its state of motion.

The given statement, "with the constant liter flow technique the total liters of the gases being delivered (N₂O and O₂) remains constant. the constant O₂ technique is used when trying to keep the liters of oxygen constant." is true because it allows for the accurate titration of anesthetic gases to achieve the desired oxygen concentration.

The constant liter flow technique involves maintaining a constant total flow rate of gases (usually a mixture of nitrous oxide and oxygen) delivered to the patient. The flow rates of each gas may vary depending on the clinical situation, but the total amount of gas delivered remains constant.

In contrast, the constant oxygen technique involves adjusting the flow rates of gases to maintain a constant concentration of oxygen delivered to the patient. This is typically used in situations where it is important to maintain a specific oxygen concentration, such as during surgery or in patients with respiratory conditions.

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Answer:

A transformer that increases the voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a step-up transformer. Conversely, a transformer designed to do just the opposite is called a step-down transformer.

Explanation:

plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz mark me brainliest

Answer:

Newton's first law of motion states that objects state of rest or uniform motion will stay unless acted upon by an external force

Explanation:

Newton's first law of motion is also called the Law of Inertia. Because, it describes the property of inertia of the body. Newton's First Law states that every object continues its state of rest or uniform motion, until or unless it is acted upon by an external force. It means that if an object is in state of rest, it will remain at rest until or unless an external force is not applied to it. Same goes for the state of uniform motion. Hence, the answer will be:

Newton's first law of motion states that objects state of rest or uniform motion will stay unless acted upon by an external force

Answer: Newton's first law of motion states that objects at rest or in motion will stay unless acted upon by a net external force.

Explanation:

Motion is typically described in terms of velocity, acceleration, displacement and time. An object's velocity cannot change unless it is acted upon by a force, as described by Newton's first law also known as inertia. More generally, the term motion signifies any spatial and or temporal change in a physical system.

Many scientists have studied motion and it's properties because of its importance to life. The Italian, Galileo Galile, who lived from 1564 to 1642, did the first systematic study of motion. Also Sir Issac Newton did more detailed work on the study of motion. In his works in motion he came about three different laws.

- Newton's first law: This states that objects at rest or in motion will stay unless acted upon by a net external force.

-- Newton's second law: This states that the force on an object is equal to its mass times its acceleration.

- Newton's third law: This states that for every action there is an equal and opposite reaction.

Answer:

A.

Explanation:

momentum depends on weight and speed

So, the car's speed after it has traveled 25 meters is most nearly 22.36 m/s.

The equation for acceleration is a = (v_f - v_i) / t, where a is acceleration, v_f is final velocity, v_i is initial velocity (in this case, zero), and t is time. We know that a = 10 m/s^2 and we want to find v_f after the car has traveled 25 meters. So we need to rearrange the equation to solve for v_f:

a = (v_f - v_i) / t
10 m/s^2 = (v_f - 0) / t
10 m/s^2 * t = v_f

Now we need to find t. We can use the equation d = v_i * t + 1/2 * a * t^2, where d is distance. We know that d = 25 meters, v_i = 0, and a = 10 m/s^2, so we can plug those values in and solve for t:

25 meters = 0 * t + 1/2 * 10 m/s^2 * t^2
25 meters = 5t^2
t^2 = 5 meters
t = sqrt(5) meters (since t has to be positive)

Now we can plug in t to find v_f:

v_f = 10 m/s^2 * sqrt(5) meters
v_f = 22.36 m/s (rounded to two decimal places)

So the car's speed after it has traveled 25 meters is most nearly 22.36 m/s.
A car initially at rest accelerates at 10 m/s² and travels 25 meters. To find its speed after traveling this distance, we can use the equation:

v² = u² + 2as

where v is the final velocity, u is the initial velocity (0 m/s in this case), a is the acceleration (10 m/s²), and s is the distance traveled (25 m).

v² = 0² + 2(10)(25)
v² = 0 + 500
v² = 500

Now, we'll take the square root of both sides to find the final velocity:

v = √500
v ≈ 22.36 m/s

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Answer:

Explanation:

option 1 - A and B move with the same speed INCORRECT because the lines have different slopes

option 2 - B moves with non-uniform speed  INCORRECT because the line for B is straight

option 3 - A completes his journey early INCORRECT because A ends his journey at about 11:45 after going about 42 km. B finishes his journey at about 11:35.

option 4 - B overtakes A at 11:10 a.m.  CORRECT.  They meet at the 30 km mark at 11:10, which is where the lines intersect.

The Nernst Equilibrium Potential is the potential energy (in mV) when an ion is in electrical equilibrium. The correct option is C.

The Nernst equilibrium potential is a theoretical membrane potential at which the electrical gradient of an ion is precisely counterbalanced by the opposing chemical gradient. For the ion, this means that there is no net flux of the ion through the membrane, and it is at equilibrium.

As a result, this concept defines the voltage at which ion movement would be equal if there were no other forces opposing the movement. For a single ion, the Nernst equilibrium potential may be computed utilizing the following formula:

E ion = (RT/zF) * ln([ion]outside/[ion]inside)

where E ion  represents the Nernst equilibrium potential for an ion, R is the gas constant, T is temperature (in Kelvin), z is the charge of the ion, F is Faraday's constant, and [ion]outside/[ion]inside represents the ion concentration ratio outside/inside the cell.

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We will have the following:

1. 143 g = 0.143 kg:

2. 110 g = 0.110 kg:

3. 410 g = 0.410 kg:

4. 46 g = 0.046 kg:

From this we can see that the given weights do not correspond to any of the values of column B, since the calculations to obtain the values of column B were done using grams, instead of kg, thus those values do not correspond to the unit of force Newtons.

a) The minimum diameter of the copper wire needed to suspend the object without breaking is approximately 0.61 mm.

b) The steel wire stretches by approximately 0.488 mm when the object is hung from it.

To calculate the minimum diameter of the copper wire needed to suspend the object without breaking, we can use the concept of stress and strain. The maximum stress on the wire should not exceed the breaking stress of the material.

a) Copper Wire

The breaking stress of copper is typically around 210 MPa (megapascals) or 210 N/mm².

The weight of the object is given as 72.3 kg. The force exerted by the object due to gravity can be calculated as

Force = mass × acceleration due to gravity

Force = 72.3 kg × 9.8 m/s²

Force = 708.54 N

The cross-sectional area of the wire is related to its diameter by the formula

Area = π × (diameter/2)²

Now, we can calculate the minimum diameter needed using the formula

Stress = Force/Area

Since we want the stress to be below the breaking stress, we can rearrange the formula to solve for the diameter

Diameter = 2 × \(\sqrt{Force/(\pi * Breaking Stress)}\)

Diameter = 2 × \(\sqrt{(708.54 N / (\pi * 210 N/mm²))}\)

Diameter ≈ 2 × 0.305 mm

Diameter ≈ 0.61 mm

Therefore, the minimum diameter of the copper wire needed to suspend the object without breaking is approximately 0.61 mm.

b) Steel Wire

To calculate the amount of stretch in the steel wire, we need to consider Hooke's law, which states that the extension of an elastic material is directly proportional to the applied force.

The diameter of the steel wire is given as 1.88 mm, which is equivalent to 0.00188 meters.

The Young's modulus for steel is typically around 200 GPa (gigapascals) or 200,000 N/mm².

The change in length or stretch of the wire can be calculated using the formula

Stretch = (Force × Length) / (Cross-sectional Area × Young's modulus)

Let's calculate the stretch

Stretch = (Force × Length) / (π × (diameter/2)² × Young's modulus)

Stretch = (708.54 N × 2.77 m) / (π × (0.00188 m/2)² × 200,000 N/mm²)

Stretch ≈ 0.488 mm

Therefore, the steel wire stretches by approximately 0.488 mm when the object is hung from it.

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Answer:

a 15.6voltz

i Hope this helps

La fórmula: P = W/t  ó  W = P x t. donde:

P = potencia

W = trabajo

t = tiempo

Otra fórmula de potencia es: P= I x V

Proceso de carga de un capacitor - condensador

Una fórmula muy importante que también hay que tener en cuenta es: V = q/C que indica que el voltaje es proporcional a la carga que hay en un condensador.

De la fórmula de potencia P= I x V y considerando que la corriente es constante (corriente continua), entonces la potencia es proporcional al voltaje.  Si el voltaje aumenta en forma lineal, la potencia aumentará igual. Ver el siguiente diagrama.

Como la potencia varía en función del tiempo, no se puede aplicar la fórmula W = P x t, para calcular la energía transferida. Pero observando el gráfico, se ve que esta energía se puede determinar midiendo el área bajo la curva de la figura.

Energía Almacenada en un Condensador - Capacitor

El área bajo la curva es igual a la mitad de la potencia en el momento “t”, multiplicada por “t”.

Entonces: W = (P x t) / 2. Pero se sabe que P = V x I. Si se reemplaza esta última fórmula en la anterior se obtiene: W = (V x I x t) / 2, y como I x t = CV = Q, entonces para saber cuanta energía (W) hay en un condensador usamos una de las siguientes fórmulas:

W = (CV2/2) julios

W = (QV/2) julios

W  = (Q2/2C) julios

, donde:

W = Trabajo (Energía) en julios

C = Capacidad en faradios

V = voltaje en voltios en los extremos del condensador

Q = carga del condensador

Answer with the given explanations below: First the given formula that looks like this is: or where:

P = power

W = work

t = time

Next with another given power formula that looks like this is:

This is the charging process of a capacitor - capacitor #1.

Then it's a very important given formula that it must also be taken into account is: which it was indicated that the voltage is proportional to the charge on a capacitor.

In the following below, from the given power formula that looks like this is: and we are considering that the current is the constant (direct current), and then the power is proportional to the voltage. If the voltage increases linearly, the power will increase the same. See the following diagram. (I'm sorry, Yhungbabe, I don't have the diagram to show you in order to refer to the total energy stored in the capacitor because I havenèt learned the energy stored in the capacitor)

Anyway, since the power varies as a function of the time, the given formula that looks like this is: cannot be applied to calculate the energy transferred. But looking at the graph, it seems that this energy can also be determined by measuring the area under the curve of the figure.

This is The Energy Stored in a Capacitor - Capacitor #2.

The area under the curve is equal to the half of the power at time "t", being multiplied by "t".

Then with the given formula below that looks like this is:

But it's known that If this is the last given formula is being replaced in the previous one, we obtain the new given formula that looks like this is: and as another new given formula that looks like this is: there's so to find out how much energy (W) that there's in a capacitor that we use in one of the new given formulas that looks like in the listed below are:

joules

joules

joules  

Now finally where:

W = Work (In The Energy) in Joules

C = Capacity in the farads

V = voltage in the volts at the ends of the capacitor

Q = a capacitor charge

I apologize for the late answer and the replies, so anyway, I use the online language translator in order to translate Spanish to English for you in order to understand my work given below, so, I hope my answer with the given explanation below here is very helpful to your own question about how to calculate the total energy stored in the capacitor with the image has been provided, please mark me as Brainliest and have a great rest of the day! :D

Sincerely,

Jason Ta,

The Ambitious of The Brainly And The Role of The TDSB And WHCI Student of The High School.

The time for the car to drive directly south is determined as 7.15 s.

The time for the car to drive directly south is determined by applying the concept of slope.

slope = Δy/Δx

a = Δv/Δt

Δt = Δv/a

Δt = (26.8)/(3.75)

Δt = 7.15 s

Thus, the time for the car to drive directly south is determined as 7.15 s.

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Answer:

16.96

Explanation:

ax=-3.24

ay=1.58

uiy=-26.8

uix=0.0.0

ufy=0

0=-26.8+1.58t

t=16.96 sec

The talk test can be used to assess :  b. lactate threshold. Talk test is an easy way to measure the relative intensity.

The talk test is one way to measure the relative intensity. If you're doing moderate-intensity activity, then you can talk but not sing during the activity. And if you're doing vigorous-intensity activity, then you will not be able to say more than a few words without pausing for a breath.

Researchers at the University of New Hampshire discovered that the results of the talk test in student volunteers were more closely associated with lactate threshold than with ventilatory threshold.

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Answer:

Solution given:

Wight [W]=500N

gravity [g]=10m/s²

mass[m]=?

we have

W=mg

500=m*10

m=500/10

m=50kg

the mass of the truck is 50kg.

The factor that does not contribute to how urbanization increases the incidence of landslides is Flood control measures prevent river flooding, which increases the incidence of landslides. The correct option is E.

Urbanization can increase the incidence of landslides due to several factors, including the removal of trees and grasses, the construction of roads that alter the permeability of the land, the placement of buildings on slopes that increases the weight on the slope, and the cutting of roads at the base of slopes that increases instability.

Flood control measures such as building dams or levees can reduce the occurrence of river flooding, but they do not directly increase the incidence of landslides. However, these measures may alter the natural drainage patterns of an area, potentially increasing the susceptibility of slopes to landslides.

Therefore, the correct answer is E) Flood control measures prevent river flooding, which increases the incidence of landslides.

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The formula for wavelength is:

wavelength = speed of sound / frequency

In this case, the frequency is 17 Hz and the speed of sound in seawater is 1539 m/s. Substituting these values into the formula gives:

wavelength = 1539 m/s / 17 Hz

wavelength = 90.5 meters

Therefore, the wavelength of the sound is 90.5 meters in seawater.

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Answer:

Explanation:

Given

Weight of box= 25N

When the rope breaks the box will obey the Newton first law, and Accelerates due to free fall, hence the acceleration will be g=9.81m/s^2

so W=F = mg

where.

F=W =is the force pulling objects toward the Earth.

m=  the mass of the object.

g= is the acceleration due to gravity; this number is a constant for all masses of matter.