10. A 975-kg car accelerates from rest to 26.7 m/s in a distance of 120 m. What is the magnitude of the average net force acting on the car?A) 740 NB) 2900 NC) 91 ND) 1300 NE) 7900 N

The displacement of a car moving with a constant velocity of 9.5 m/s in a time interval between 3 seconds to 5 seconds is 19 meters.

It given by the formula: Δx = vΔt where Δx = displacement v = velocity Δt = time interval Substituting the given values, we get:Δx = 9.5 m/s × (5 s - 3 s)Δx = 9.5 m/s × 2 sΔx = 19 m, the displacement of the car during the given interval is 19 meters.

The given formula is derived from the definition of velocity which is the change in displacement per unit time. Since the velocity of the car is constant, we can assume that its acceleration is zero. Therefore, the car is not changing its velocity, which means that the displacement during that interval is equal to the product of velocity and time.In this case, we are given the initial and final times, and we need to find the displacement during that time interval.

The difference between the two times is 2 seconds. Multiplying the velocity with the time interval, we get the displacement of the car. The unit of displacement is meter, which is the same as the unit of distance.

Know more about displacement  here:

https://brainly.com/question/29769926

#SPJ11

Many students leaving a crowded room and entering a vacant hallway could serve as a model of diffusion (option D).

The transfer of molecules from a location of higher concentration to a region of lower concentration is referred to as diffusion. Many students leaving a crowded room and entering a vacant hallway could serve as a model of diffusion (option D). A specific event or circumstance is described or shown using a model. The area with higher concentration in this instance is the packed room. The area with lower concentration is the unoccupied hallway. The students are the molecules. Diffusion is also implied by their transition from the busy room to the empty hallway.

Learn more about concentration here-

https://brainly.com/question/11548591

#SPJ4

The alpha particles are capable of alternating the mass and atomic numbers in the atoms which is responsible for transmutation. This occurs in nuclear reacting.

Learn more about radiation:

https://brainly.com/question/12494464

To find the Thevenin voltage (VTh) without using Kirchhoff's voltage law (KVL) or Kirchhoff's current law (KCL), we can apply the voltage divider rule. The voltage divider rule states that the voltage across a resistor in a series circuit is proportional to its resistance.

In Figure 8-82, we need to determine the current through the load RL. To do this, we first find the Thevenin voltage (VTh) which is the open-circuit voltage across the load terminals. Here's how we can find it using the voltage divider rule:

Identify the two resistors in series: The 5.6 kQ resistor and the 15 kQ resistor.
Calculate the total resistance (RT) of the series combination: RT = 5.6 kQ + 15 kQ = 20.6 kQ.
Identify the resistor across which you want to find the voltage: In this case, it is the 15 kQ resistor.
Apply the voltage divider rule: \(VTh = (R2 / (R1 + R2)) * VSource\).
  - Substitute the values: \(VTh = (15 kQ / (5.6 kQ + 15 kQ)) * 32 V\).
  - Simplify the expression:\(VTh = (15 kQ / 20.6 kQ) * 32 V\).
  - Calculate VTh:\(VTh ≈ 23.44 V\).
Therefore, the Thevenin voltage (VTh) is approximately 23.44 V.
To know more about Thevenin voltage visit:

https://brainly.com/question/31989329

#SPJ11

False. Norton's Theorem states that any two-terminal source can be reduced to an equivalent current source in parallel with an equivalent resistance, not an equivalent shunt resistance, simplifying complex electrical networks.

Norton's Theorem states that any two-terminal source can be reduced to an equivalent current source in parallel with an equivalent resistance, not an equivalent shunt resistance. This theorem is a fundamental concept in electrical circuit analysis and provides a powerful tool for simplifying complex networks.

When applying Norton's Theorem, the original two-terminal network is replaced by a Norton current source (IN) connected in parallel with a Norton resistance (RN). The Norton current source represents the current that would flow through a short circuit connected across the terminals of the original network, while the Norton resistance represents the resistance seen by the short circuit.

The equivalent resistance is determined by removing all independent sources (voltage or current sources) from the original network and calculating the resistance across the terminals. The equivalent current source is then calculated by short-circuiting the terminals and determining the current flowing through the short circuit.

By utilizing the Norton equivalent circuit, complex networks can be simplified, allowing for easier analysis using standard circuit techniques. It is important to note that the equivalent resistance is in parallel, not shunt, with the Norton current source.

Learn more about Norton's Theorem

brainly.com/question/30701412

#SPJ11

According to APICS (Association for Supply Chain Management), the record accuracy for A items should ideally be at least 95-99%. A items are considered high-priority inventory items that require close management and accurate record keeping due to their significant impact on the company's financial performance and overall supply chain efficiency.

The APICS (The Association for Operations Management) recommends that item records be accurate to within.98%. This indicates that a minimum of 98% accuracy is required for the physical inventory count to match the recorded inventory count. In order to effectively manage your inventory, cut down on waste, and prevent stockouts or overstocking, you must achieve high record accuracy.

According to APICS (The Association for Operations Management), the record accuracy for items should be at least 98%. This means that the physical inventory count should match the recorded inventory count at a minimum of 98% accuracy. Achieving high record accuracy is essential for effective inventory management, reducing waste, and avoiding stockouts or overstocking.

To know more about Supply Chain Management click here:

https://brainly.com/question/30436508

#SPJ11

Answer:

El Ninos and La Ninas. Translation: The Boys and The Girls

Explanation:

Given

Mass of one of the object is doubled and the distance between the object is doubled.

To find

What happens to the gravitational force

Explanation

The gravitational force is directly proportional to the masses and inversely proportional to the distance between them

Keeping all other parameters constant,

So when the mass doubles and the distance doubles we have,

Conclusion

A. The gravitational force becomes half as great.

To calculate the average current delivered by the defibrillator, we need to use the formula I = Q/t, where I is the current, Q is the charge, and t is the time. In this case, we know that the capacitor completely discharges in 2.5 ms, which is equivalent to 0.0025 seconds. We also know that the charge on the capacitor is given by Q = CV, where C is the capacitance and V is the voltage.

Average Current (I_avg) = Charge (Q) / Time (t)

First, we need to find the charge (Q) using the formula:

Q = Capacitance (C) × Voltage (V)



Once you have the values for capacitance (C) and voltage (V), you can calculate the charge (Q) and then use it to find the average current (I_avg) using the formula mentioned earlier.

Learn more about average here : brainly.com/question/24057012

#SPJ11

The mechanical advantage of a pulley is the ratio of the output force to the input force.

For example, if a pulley is used to lift a weight of 100 pounds, and the input force is 10 pounds, then the mechanical advantage is 10:1 (100/10).

This means that for every 10 pounds of input force, the pulley can lift 100 pounds of weight. The mechanical advantage of a pulley is determined by the number of strands of rope that are used in the pulley system. The more strands of rope, the higher the mechanical advantage will be.

To know more about pulley here

https://brainly.com/question/13752440

#SPJ4

The percentage yield is a measure of how efficiently a chemical reaction produces the expected product. In this case, the expected product was 2.63 g, but only 2.45 g was isolated. To calculate the percentage yield, you need to divide the actual yield (2.45 g) by the theoretical yield (2.63 g), and then multiply by 100 to convert to a percentage.

The equation for percentage yield is:

% Yield = (actual yield / theoretical yield) x 100

In this case, the calculation would be:

% Yield = (2.45 g / 2.63 g) x 100 = 93.14%

Therefore, the percentage yield is 93.14%. This means that only 93.14% of the expected product was obtained in the reaction. The remaining 6.86% was lost due to various factors such as incomplete reaction, loss during transfer or filtration, or errors in measurement.

In conclusion, calculating the percentage yield is an important step in assessing the efficiency of a chemical reaction. It helps to identify the factors that affect the yield and optimize the conditions to maximize the product output.

to know more about chemical reaction click this link

brainly.com/question/22817140

#SPJ11

Using the work done relation, the value of force is 25 Newton.

When a force is applied along a displacement, "work" in physics refers to the energy that is transported to or away from an object. The following situations include work: relocating a table. a door being pulled and pushed. Walking. raising a stone.

The work W that a force F traveling across a distance x exerts on an object is calculated using the formula W=Fs. If the object is moving in the opposite direction from how we expect it to, we add a minus sign.

Work done is equal to displacement times force.

50J = force × 2

f=50/2

Force = 25 Newton.

To learn more about work done from given link

https://brainly.com/question/28199162

#SPJ1

Answer:

yes

Explanation:

It would take only 0.018 seconds or 18 milliseconds for the nerve impulse to travel from the man's toe to his brain.

The nerve impulse is an electric signal that passes through the nerve fibres. It travels quickly through the body at a speed of about 100 m/s. This means that it would take less than a second for the impulse to travel from the man's toe to his brain. In order to calculate the time it would take for the nerve impulse to travel from the man's toe to his brain, we can use the equation:

Time = Distance / Speed Here, the distance is the length of the man's body from his toe to his brain, which is approximately 1.8 meters. The speed of the nerve impulse is 100 m/s.

Substituting these values into the equation, we get: Time = 1.8 m / 100 m/s Time = 0.018 s

Therefore, it would take only 0.018 seconds or 18 milliseconds for the nerve impulse to travel from the man's toe to his brain.in order to calculate the time it would take for the nerve impulse to travel from the man's toe to his brain, we can use the equation:

Time = Distance / Speed. Here, the distance is the length of the man's body from his toe to his brain, which is approximately 1.8 meters. The speed of the nerve impulse is 100 m/s. Nerve impulses are an essential part of the body's communication system. They allow the brain to send signals to different parts of the body, and vice versa. These impulses travel very quickly through the body, which is why we are able to react quickly to different stimuli. The speed of the impulse depends on various factors, such as the diameter of the nerve fibre and the presence of myelin sheaths. The presence of myelin sheaths speeds up the conduction of the impulse, as it helps the impulse to jump from one node of Ranvier to the next. This is known as saltatory conduction. The speed of the impulse is also affected by different diseases, such as multiple sclerosis. In this condition, the myelin sheaths are damaged, which slows down the conduction of the impulse.

it takes only 0.018 seconds or 18 milliseconds for the nerve impulse to travel from the man's toe to his brain. The speed of the impulse depends on various factors, such as the presence of myelin sheaths and the diameter of the nerve fibre. Different diseases can also affect the speed of the impulse.

To know more about Distance visit:

brainly.com/question/13034462

#SPJ11

Answer:

When a net force acts on a body it produces acceleration in body the magnitude of tries acceleration is directly proportional to the net force acting and inversely proportional to the mass of the body

Mathematical form

F=ma

Explanation:

I hope it will help you

Answer:

The speed of the comet at the surface of the star is approximately 1,208,694.7 m/s

Explanation:

Question parameter obtained online; The mass of the star, M = 5 × 10³¹ kg

Explanation;

The given mass of the comet, m = 2 × 10⁸ kg

The initial velocity of the comet, v → 0

The distance of the comet from the star, d = 700,000,000 km

The gravitational potential at d = G·M·m/d

The kinetic energy of the comet, K.E. = m·v²/2

The kinetic energy of the comet at d = m·(0)²/2 = 0

The gravitational potential at the surface of the star, R = G·M·m/R

The kinetic energy of the comet at the surface of the star, R = m·(v)²/2 = 0

Where;

M = The mass of the star = 5 × 10³¹ kg

\(M_{Sun}\) = The mass of the Sun = 1.989 × 10³⁰ kg

M/\(M_{Sun}\) = 5 × 10³¹/(1.989 × 10³⁰) ≈ 25

G = The universal gravitational constant = 6.67430 × 10⁻¹¹ N·m²/kg²

R = The radius of the star

Therefore, we have;

m·(0)²/2 - G·M·m/d = m·v²/2 - G·M·m/R

∴ v = √((G·M·m/R - G·M·m/d)×2/m) = √(2·G·M(1/R - 1/d))

Therefore; v = (2 × 6.67430 × 10⁻¹¹ × 5 × 10³¹ × (1/R - 1/700,000,000,000))

v = 81696389149.1×√(1/R - 1/700,000,000,000).

The speed of the comet at the surface of the star, v = 81696389149.1×√(1/R - 1/700,000,000,000)

The mass radius relationship is given as follows;

\(\dfrac{R}{R_{Sun}} = 1.30 \times \left(\dfrac{M}{M_{Sun}} \right)^{\dfrac{1}{2} }\)

\(R = R_{Sun} \times 1.30 \times \left(\dfrac{M}{M_{Sun}} \right)^{\dfrac{1}{2} }\)

The radius of the Sun = 696,340,000 M

∴ R ≈ 696,340,000 × 1.3 × √(25.14) = 4538865694.76

R = 4538865694.76 m

v = 81696389149.1×√(1/4538865694.76 - 1/700,000,000,000) ≈ 1208694.7  m/s

Answer:

x J = (1500 kg)(29 m/s)(y m/s)

Explanation:

x J = (1500 kg)(29 m/s)(y m/s)

To know that a 1500 kg car is moving at 29 m/s is not enough.

The value of x depends on y. You’re missing a number of meters and a quantity of ‘per seconds’ somewhere in your problem statement and you need to find them in order to solve the problem

The increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.

Kinetic energy of a particle is directly proportional to its temperature.

A ball initially at rest acquires kinetic energy when an external force is applied to it. As the person strikes the ball with a bat, the ball gains momentum which increases its kinetic energy of the ball.

Temperature on the other hand, is the measure of the average kinetic energy of a particle. Consequently, as the kinetic energy of the ball increases, the temperature of the ball increases as well.

Thus, we can conclude that the increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.

Learn more here: https://brainly.com/question/18833622

Answer:

This must be harder than it appears or I'm missing something, but as far as I know y=5

Explanation:

The requried formulas for the position as a function of time,
(i) For Ironman, \(y_i(t) = y_i + v_i * t + (1/2) * a t^2\)
(ii) For warhead, \(y_{w(t)} = y_{wi} + v_{wi} * t + (1/2) * (-g) t^2\)

Let's denote the initial position of Iron Man as \(y_i\) and the initial velocity as \(v_i\). The initial position of the warhead is assumed to be at the same location as Iron Man initially.

(i) Iron Man's position as a function of time:

The formula for the position as a function of time for Iron Man can be obtained using the equations of motion:

\(y_i(t) = y_i + v_i * t + (1/2) * a t^2\)

(ii) The warhead's position as a function of time:

The warhead's position as a function of time can be calculated using the same equations of motion. However, since the warhead is falling downward with an initial velocity of 50 m/s, the initial position of the warhead should be negative (below Iron Man's initial position).

Let's denote the initial position of the warhead as \(y_{wi}\) (negative value) and the initial velocity as \(v_{wi}\) (negative value). The warhead's acceleration is the acceleration due to gravity in the downward direction.

Using the same equation as above:

\(y_{w(t)} = y_{wi} + v_{wi} * t + (1/2) * (-g) t^2\)

Learn more about the function of time here:

https://brainly.com/question/33260773

#SPJ4

The correct answer is A, the brake pedal.

Before starting the engine, it is essential to ensure that the car is in a stationary position. Placing your foot on the brake pedal helps to keep the car stationary and prevent any accidental movement. It is a safety measure that must be followed at all times. Placing your foot on the accelerator pedal is not recommended as it could cause the car to move unexpectedly and potentially result in an accident. Placing your foot on the floor is also not recommended, as it does not serve any purpose in terms of safety or starting the engine. Therefore, the correct answer is A, the brake pedal, which is the standard practice recommended by car manufacturers and driving instructors.

To learn more about  brake pedal : brainly.com/question/4579413

#SPJ11

Answer:

Vx = u*cos θ

Explanation:

where ,

θ = angle of projection with X - axis(horizontal)

u = initial velocity of projectile

Vx = velocity of projectile with respect to x-axis

The CG is located 99.76 inches aft of the datum.

To determine center of gravity (CG), we need to use formula:

CG = (Σ(weight x arm))/Σ(weight)

where Σ(weight x arm) is sum of  weight times arm for each component, and Σ(weight) is sum of all weights.

Weight of pilot and passengers = 380.0 lb

Arm of pilot and passengers = 64.0 in

Weight of fuel = total weight - empty weight - weight of pilot and passengers = 1875.0 - 1495.0 - 380.0 = 0 lb

Arm of fuel = 96.0 in

Calculate the CG:

CG = (1495.0 x 101.4) + (380.0 x 64.0) + (0 x 96.0) / (1495.0 + 380.0 + 0) = 99.76 in aft of datum

To know more about center of gravity, here

brainly.com/question/20662119

#SPJ4

Answer:

Dark matter is the term astronomers use to describe material in the universe that does not emit or reflect light and is, therefore, invisible.

Explanation:

Stars, nebulae, and galaxies are examples of luminous objects in the sky. However, luminous matter appears to make up only a small fraction of all the matter in the universe, perhaps only up to 10 percent.

Mechanical efficiency considers the ratio between the energy expenditure of exercise and option B. Energy output.

Mechanical efficiency is an exercising term that describes the ratio of labor output to work input for the duration of the bodily hobby. The more efficaciously you pass with the least quantity of attempt expended, the greater your mechanical efficiency.

Mechanical gain is the ratio of load to attempt, i.e., Output force to enter force. efficiency is the ratio of labor completed by way of a machine to the work completed on the system, i.e., Output paintings to enter work. The extra efficiently you pass with the least amount of effort expended, the extra your mechanical efficiency. A degree of mechanical performance is specifically important to athletes whose purpose is to improve sports overall performance.

Learn more about Mechanical efficiency here:-https://brainly.com/question/1279216

#SPJ4

Answer:

Explanation:

A wooden table with a mass of 10 kg was set on a wooden floor and pushed with a force of 10N to the table, however, it did not move due to friction.

Because the force of friction was greater than the force given to the object, it did not move.

To move the box, the force applied should be more than 10N

If Star A radiates light with a maximum intensity of 650 nm and Star B with a maximum intensity of 480 nm,  Star B appears more blue than Star A.

Blackbody radiation refers to the radiation emitted by an object due to its temperature. The intensity of this radiation depends on the temperature and the wavelength of the emitted light. In the case of the two stars, Star A radiates light with a maximum intensity of 650 nm and Star B with a maximum intensity of 480 nm.

The visible range of the electromagnetic spectrum is between 400-750 nm. Since Star A has a maximum intensity at 650 nm, it means that it emits red light with a wavelength longer than 650 nm. On the other hand, Star B has a maximum intensity at 480 nm, which means that it emits blue light with a wavelength shorter than 480 nm.

Therefore, Star B appears more blue than Star A.

To learn more about black body radiation https://brainly.com/question/12531332

#SPJ11

Answer:

When manufacturers refer to a blade being hollow ground, they are referring to the face of the teeth. If you were to stand the blade in such a way as to make a tooth horizontal to the floor, the face of the tooth would be slightly “hollow” like a bowl. This provides a sharper cutting surface to the material being cut, rather than the typical 90 degree sharpened saw tooth. The resulting tooth geometry provides for an extremely accurate and clean cut. However, the tradeoff is that these blades become dull much easier t…

Explanation:

The graphs display the function solution y = ex and three numerical solutions -Euler, Improved Euler, and Runge-Kutta- at different intervals. The Relative Deviation on the right measures the difference between the numerical solutions and the exact function solution.

The analysis of each set of graphs involves comparing the numerical solutions (Euler, Improved Euler, and Runge-Kutta) with the exact function solution y = ex. The Relative Deviation provides an indication of how closely the numerical solutions approximate the exact solution.

To analyze each set of graphs, follow these steps:

By examining the graphs and assessing the Relative Deviation, one can analyze the accuracy and performance of the numerical solutions -Euler, Improved Euler, and Runge-Kutta- in approximating the exact function solution y = ex at different intervals or iterations.

Learn more about Euler here: brainly.com/question/31821033

#SPJ11