6. A jet plane is cruising at 340 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 3.4 km, the jet is moving with a speed of 400 m/s. What is the jet's acceleration,

Answer:

1/2 m v^2 = m g h       speed of pendulum related to change in potential energy

v^2 = 2 g h

v^2 = 2 * 9.8 m/s^2 * .65 m = 12.7 m^2 / s^2

v = 3.57        max speed attainable by pendulum

v^2 = 2 g * .25       speed attainable when falling thru .25 m

v^2 = 4.9 m^2/s^2

v = 2.21 m/s speed of pendulum after falling thru .25 m

The evolution of a gas, precipitate formation, color change, temperature change, and state change are significant aspects of chemical reaction.

A chemical reaction occurs when one or more substances completely transform into another one or more substances. It can exhibit one or more characteristics, such as a state change, color change, gas evolution, temperature change, precipitate development, etc. The majority of our energy is produced by chemical reactions. Many different types of materials are tested, identified, and studied using chemical reactions.

Combustion reaction, decomposition reaction, neutralization reaction, redox reaction, precipitation or double-displacement reaction, and synthesis reaction are some of the numerous types of reactions.

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What are the characteristics of chemical reactions?

Answer:

2413

Explanation:

If your on Acellus 2413 is what you want to put in

(c) T. The period of oscillation remains unchanged even when the mass of the bob is increased to 4.0m.

The period of oscillation of a simple pendulum is primarily determined by its length (l) and the acceleration due to gravity (g). The mass of the bob does not play a significant role in the oscillation period. The formula for the period of a simple pendulum is given by:
T = 2π √(l/g)
In this scenario, the mass of the bob is initially m, and the period is T. When the mass of the bob is replaced by one with mass 4.0m, the formula for the period remains the same since the mass does not influence the period:
T' = 2π √(l/g)
Comparing the initial period (T) and the new period (T'), we can see that both formulas are identical, which means the period remains the same:
T = T'
Hence, the correct answer is (c) T. The period of oscillation remains unchanged even when the mass of the bob is increased to 4.0m.

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ANSWER

The problem cannot be determined or solved

EXPLANATION

This is the information we have:

• initial speed, v0 = 28 m/s

• acceleration, a = 2 m/s^2

We have to find:

• final speed, v

• final position, x

To find the final speed of an object we'd use the following formula:

And to find the distance an object traveled we'd use:

Note that for both we need to find how long the object was moving. In this problem, we don't have that information so we cannot determine the final speed or the distance the car traveled.

For example, the speed and distance at t = 2 seconds is not the same as at t = 20 seconds. Ideally, the car could keep speeding up indefinitely at the same acceleration.

Therefore, witht he given information the problem cannot be solved

Answer:

friction

air drag

every thing that opposes the motion affects kinetic energy

Explanation:

kinetic energy is a energy which is increase with increase in motion and potential energy is energy stored while the object is at rest

potential energy ∝ 1/(kinetic energy)

as kinetic energy increases potential energy decreases

The electrostatic pressure on the surface of a conductor can be written as the force per unit area due to the electrostatic repulsion of charges on the surface. This pressure is evenly distributed on the surface of the conductor and depends on the magnitude and distribution of the charges on the surface.

Conductors have the unique property of allowing charges to move freely on their surfaces, which is why they can be used in electrical circuits to transport charges.

The electrostatic pressure on the surface of a conductor can be written as:
Electrostatic pressure (P) = (1/2) × (ε₀ × E²)

where:
- P is the electrostatic pressure
- ε₀ is the vacuum permittivity (approximately 8.85 × 10⁻¹² C²/N·m²),
- E is the electric field strength at the surface of the conductor.

In a conductor, the electric charges distribute themselves on the surface in such a way that the electric field inside the conductor is zero. This distribution of charges creates an electrostatic pressure on the surface of the conductor, which can be calculated using the above formula.

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The total mechanical energy of the bicyclist is 1400 J, obtained by adding her potential energy of 720 J and kinetic energy of 680 J. The correct answer is option B.

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Answer:

4000 J

Explanation:

x * .125  = 500

x = work input   =   500 / .125 = 4000 J

According to Fleming's left-hand rule, the direction of the force is parallel to the directions of the magnetic field and current.

Here, the current is flowing upward while the magnetic field is to the right (opposite to the flow of electron). When a charge particle moves through the magnetic field, a force known as the magnetic force is exerted on the charge particle. The magnetic force acts perpendicular to the velocity at every time when a charged particle moves perpendicular to a uniform magnetic field, causing the particle to proceed on a circular path with a constant velocity v. As a result, although the direction of the velocity changes, its magnitude does not.

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The speed of a sound wave will increase if the temperature of the medium rises. (A)

Temperature affects the density of the medium through which a sound wave travels, which modifies the speed of sound. Put simply, the speed of sound in a given medium will increase as its temperature increases. Since temperature affects the speed of sound, the wavelength also varies. The wave's frequency doesn't change when it moves from one place to another. Since the speed of sound is proportional to the product of the wavelength and the frequency, a change in temperature will cause a shift in the wavelength of sound waves even if the frequency stays the same.

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If a truck has a linear acceleration of 1.85 m/s² and the wheels have an angular acceleration of 5.23 rad/s², the diameter of the truck's wheels   0.71 m.

Linear acceleration refers to the time rate of change of linear velocity, whereas angular acceleration refers to the time rate of change of angular velocity. This is the primary differential between linear and angular acceleration. Simply said, changes in an object's linear velocity with respect to time are represented by changes in linear acceleration.

The angular acceleration can be deduced immediately from the concept of α =ΔωΔt because the ultimate angular velocity and time are both provided.

The link between linear acceleration (a) and rotational acceleration is expressed as a = r×α . When the angular acceleration increases, so will the linear acceleration's strength. Increased wheel angular acceleration, for instance, denotes an accelerated vehicle.

Linear acceleration is the uniform acceleration caused by a moving body moving along a straight line. There are three equations that are essential in linear acceleration, depending on parameters like start and terminal velocities, displacements, times, and acceleration.

Given :

linear acceleration a = 1.85 m/s²

angular acceleration α  = 5.23 rad/s²

radius r = a/ α  = \(\frac{1.85}{5.23}\) = 0.354 m

diameter  d = 2r = 2 × 0.354 = 0.71 m

diameter of the wheels is  0.71 m.

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The frequency shift is 188.2 kHz.

The frequency shift, also known as the Doppler shift, can be calculated using the formula Δf/f = v/c, where Δf is the frequency shift, f is the original frequency (21.0 GHz), v is the velocity of the car (68.0 mph), and c is the speed of light.

First, we need to convert the velocity of the car from mph to m/s, which is 30.28 m/s. Then, we can plug in the values and solve for Δf.

Δf/f = v/c
Δf/21.0 GHz = (30.28 m/s)/c
Δf = (21.0 GHz)(30.28 m/s)/c
Δf = 188.2 kHz

This information can be used by the police to determine the speed of the car and potentially issue a speeding ticket.

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The approach to development least likely to result in sprawl is: C. high-density multi-use development.

Sprawl is characterized by the spread of low-density, single-use development over a large area, often in a decentralized pattern. This type of development is typically associated with automobile-dependent land use patterns and long commuting distances, which contribute to traffic congestion, air pollution, and a variety of other negative environmental and social impacts.

High-density multi-use development, on the other hand, typically involves compact, mixed-use development patterns that encourage walking, biking, and public transit use. This type of development is designed to minimize the need for automobile travel and to create more walkable, livable communities.

Leapfrog development, commercial (strip) development, and low-density single-use development are all types of development patterns that are more likely to contribute to sprawl than high-density multi-use development.

Therefore the correct option is C.

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Answer:

Gravitational

Explanation:

When studying atoms, scientists can ignore the  gravitational force between charged particles that make up the atoms because it is many millions of times smaller than other forces in the atom.

Answer:

Gravitational

Explanation:

The percent of decrease is calculated as 31.25%. To calculate the percent decrease, we need to find the difference between the original price and the reduced price, divide that difference by the original price, and then multiply by 100.

Given: Original price: $8.00
and reduced price: $5.50

1. Find the difference: $8.00 (original price) - $5.50 (reduced price) = $2.50
2. Divide the difference by the original price: $2.50 ÷ $8.00 = 0.3125
3. Multiply by 100 to get the percentage: 0.3125 × 100 = 31.25%

So, the difference: $8.00 - $5.50 = $2.50

Hence, percent decrease: ($2.50 ÷ $8.00) x 100% = 31.25%

So, the percent of decrease in the price of the batteries is 31.25%.

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Answer:

The beat frequency is always equal to the difference in frequency of the two notes that interfere to produce the beats. So if two sound waves with frequencies of 256 Hz and 254 Hz are played simultaneously, a beat frequency of 2 Hz will be detected. ... These sounds will interfere to produce detectable beats.

Explanation:

To determine the pressure at a given depth within a fluid, you can use the hydrostatic pressure formula:

\(P = p_0 + pgh\)

The pressure at a distance of 40 cm below the surface of the liquid is approximately 111,325 Pascal (Pa).

where:

P is the pressure at the given depth,

P₀ is the pressure at the surface of the fluid (usually atmospheric pressure),

ρ is the density of the fluid,

g is the acceleration due to gravity, and

h is the depth below the surface.

Given:

Density (ρ) = 2500 kg/m³

Acceleration due to gravity (g) = 10 m/s²

Depth (h) = 40 cm = 0.4 m

Assuming the pressure at the surface (P₀) is atmospheric pressure, we can calculate the pressure at the given depth as follows:

\(P = p_0 + pgh\)

P = P₀ + (2500 kg/m³)(10 m/s²)(0.4 m)

Since we are assuming atmospheric pressure at the surface, P₀ is approximately 1 atmosphere, which is equivalent to 101,325 Pa.

P = 101,325 Pa + (2500 kg/m³)(10 m/s²)(0.4 m)

P ≈ 101,325 Pa + 10,000 Pa

P ≈ 111,325 Pa.

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Answer:

F = 9/5 C + 32     conversion from C to F

F = 9/5 * F/5 + 32

25 F = 9 F + 800

16 F = 800

F = 50  

Check:

C = 5/9 ( F - 32)  = 5/9 (50 - 32) = 10  as requested

Q = c m change in temp

Q = 1 cal/gm-deg C * 500 gm * 45 deg C = 22,500 calories

50 Fahrenheit heat required.

Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy  between physical systems.

F = 9/5 C + 32     conversion from C to F

F = 9/5 * F/5 + 32

25 F = 9 F + 800

16 F = 800

F = 50

The answer is 50 Fahrenheit.

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Answer:

As a substance freezes, its particles lose some of their freedom of motion and become more orderly.

Explanation:

Answer:

They get closer and slow down

Explanation:

Answer:

Explanation:

2 min 20 sec = 140 sec .

In 40 sec  one round

In 140 sec 140 / 40 round = 3.5 round .

That means the boy will be positioned at the diametrically opposite corner of the square path .

side of square path = 15 m

length of diameter = 15√2

= 21.21 m

Displacement of boy is 21.21 m .

They have a limited supply in nature, therefore if they are used excessively, they will become exhausted.

Today, we recognise that using fossil fuels has a negative impact on the environment. Fossil fuels produce and utilise local pollutants, and their continued use permanently alters the temperature of our entire world.

Wastes from combustion sources are those that result from carbon pollution (i.e., coal, oil, natural gas). Included in this are all ash and particles taken out of the flue gas.

The fossile fuel is limited in nature. So, it should not waste energy from fossil fuels.

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The ball will rise back to a height equal to the initial height multiplied by the amount of kinetic energy it had before it started to ascend again (1-fraction of energy lost).

All of the ball’s kinetic energy must be dissipated when it strikes the ground. The bounce increases with potential energy, kinetic energy, and kinetic energy alone, thus the more energy that returns to the ball and gives it more power to spring back into the air, the higher the bounce.

The height from which a ball is dropped, the material of the ball (and, if it is inflated, the pressure at which it is inflated), and the material of the surface from which the ball bounces determine the height to which it will rebound.

If you are measuring the height of the ball from its bottom to the ground, the radius of the ball doesn't actually matter.

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Answer: yes

Explanation:

filling it up

Explanation:

They are the foundation of classical mechanics.

A hypothesis is a speculative explanation that may be tested by more research. A theory is a well-supported explanation for observed phenomena. A scientific law is a summary of the relationship between variables. A regulated way of evaluating a hypothesis is an experiment. A significant feature shared by a scientific hypothesis, theory, and rule is that they are all founded on observations. A scientific observer notices a phenomena and attempts to explain what they saw.

The terms “IF” and “THEN.” Are frequently used in hypothesis writing. “If I do not study, then I will fail the test.” For example. Your independent and dependent variables are reflected in the “if” and “then” statements. Your theory should be related to your

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18902.4 J kinetic energy just before it strikes the ground.

The energy an item has as a result of motion is known as kinetic energy. A force must be applied to an item in order to accelerate it. We must put forth effort in order to apply a force. After the job is finished, energy is transferred to the item, which then moves at a new, constant speed.

Given that,

mass (m) = 18.3 kg

height (h) = 105.4 m

Thus, Potential energy (P.E) = mgh

or, P.E = (18.3) ×(9.8) ×(105.4)

or, P.E = 18902.4 J

Kinetic energy (K.E) = Potential energy (P.E)

or, Kinetic energy (K.E) = 18902.4 J

Thus, 18902.4 J kinetic energy needed just before it strikes the ground.

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Soles of boots that are designed to protect workers from electric shock are rated to pass a maximum rms current of 1.0 ma when connected across an 18000 v ac source. the minimum allowed resistance of the sole to protect workers from electric shock is 18,000,000 Ω.

To determine the minimum allowed resistance of the sole for worker protection from electric shock, we can use Ohm’s Law and the given specifications. Ohm’s Law states that the current passing through a resistor is equal to the voltage across it divided by its resistance.

In this case, the maximum rms (root mean square) current is given as 1.0 mA (milliamperes), and the voltage across the sole is 18,000 V (volts). We can convert the current to amperes by dividing by 1,000, which gives us 0.001 A.

Applying Ohm’s Law, we have:

I = V / R

0.01 A = 18,000 V / R

0.02

To find the minimum allowed resistance ®, we rearrange the equation:

R = V / I

R = 18,000 V / 0.001 A

R = 18,000,000 Ω (ohms)

Therefore, the minimum allowed resistance of the sole to protect workers from electric shock is 18,000,000 Ω.

This high resistance value is necessary to limit the current flow through the worker’s body to a safe level, preventing electric shock. The resistance of the sole helps to restrict the amount of current that can pass through it, reducing the risk of harm to the worker.

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