true/false. the blade of the hacksaw is subjected to a pretension force

1 meter per second squared is equivalent to 0.001 kilometer per second squared.

To convert 1 meter per second squared (m/s²) into kilometer per second squared (km/s²), we need to consider the conversion factor between meters and kilometers.

1 kilometer is equal to 1000 meters, so we can use this conversion factor to convert the units.

First, let's convert the acceleration from meters per second squared to kilometers per second squared:

1 m/s² = (1/1000) km/s²

Therefore, 1 meter per second squared is equal to 0.001 kilometer per second squared.

So, 1 m/s² = 0.001 km/s².

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Answer:

i believe the answer is c

Essential amino acids are high biological value proteins (option C).

Biological value is the ratio between the amount of amino acids that can be retained (retention) by the body (for body protein synthesis) with the amount of amino acids that can be absorbed by the small intestine.

The quality of protein is determined by the type and proportion of amino acids it contains. Proteins with high biological value or high quality are proteins that contain all types of essential amino acids suitable for growth.

Proteins that are easily digested (hydrolyzed) by digestive enzymes, and contain complete and balanced amounts of essential amino acids (according to the body's needs), are proteins of high nutritional value.

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One way organisms with similar niches reduce competition when they are found in the same ecosystem is by resource partitioning.

One example of resource partitioning is when two species of birds foraging together feed on different resources; one eats insects on tree trunks while the other eats insects in the outer branches.

Resource partitioning, which helps prevent rivalry in an ecological niche, is the division of scarce resources among species.

Two similar species employ mostly non-overlapping resources as a result of this type of evolution, and as a result, they occupy different niches. Because there is less direct rivalry between the species as a result of this resource partitioning, the species can coexist.

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The switch that adjusts the magnetic field to be either nearly uniform or have a strong gradient will affect the current in the two coils differently.

When the magnetic field is nearly uniform at the center, the current in both coils will remain relatively unchanged. The uniform field will not induce any significant voltage in the coils, so the current will flow through them as usual.

However, when the magnetic field has a strong gradient, the current in the two coils will be affected differently. The rapidly changing field will induce a voltage in the coils according to Faraday's law of electromagnetic induction. This induced voltage will result in a change in the current flowing through the coils. The magnitude and direction of the induced current will depend on the specific characteristics of the coils and the magnetic field gradient.

In summary, the switch that changes the magnetic field from uniform to having a strong gradient will induce a change in the current flowing through the coils due to the induced voltage.

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The acid ionization constant (\(K_{a}\)) for the weak acid HA in the given question for the shared values will be around 0.

We must use the pH and concentration of the acid solution to determine the acid ionization constant (Ka) for the weak acid HA.

The amount to which the weak acid dissociates in water is indicated by the acid ionization constant.

Assumed: pH = 2.93.

HA concentration: 0.190 M.

We will use the following relationship between pH and the number of hydronium ions ( \(H_{3} 0^{+}\) ) to address this issue:

pH equals -log \(H_{3} 0^{+}\)

First, using the provided pH, we must determine the hydronium ion concentration:

\(H_{3} O^{+}\) = \(10^{-pH}\)

\(H_{3} O^{+}\)= \(10^{-2.93}\)

\(H_{3} 0^{+}\) = 7.33 × \(10^{-3}\) M

As we know that HA is a weak acid, it dissociates into its conjugate base

(\(A^{-}\)) and hydronium ions like the following reaction:

\(HA\) ⇄ \(A^{-}\) + \(H_{3} 0^{+}\)

Expression for equilibrium to the above reaction:

\(K_{a\)= (concentration of conjugate base x concentration of hydronium ions)/ concentration of HA

We don't know the concentration of the conjugate base.

But we do know that the solution is very dilute so we can say that the dissociation of the given acid is very less compared to the concentration.

So we can take its value to be 0.

\(K_{a}\) = (0 × \(H_{3} 0^{+}\)) / HA

\(K_{a}\) = 0

So, the acid ionization constant for the given acid will be zero.

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The acid ionization constant (Ka) for the weak acid is \(1.7 * 10^{-3}\).

To calculate the acid ionization constant (Ka), we need to use the pH value and concentration of the weak acid solution. The pH of the solution indicates the concentration of H+ ions, which is related to the concentration of the weak acid and its dissociation.

The pH can be converted to the concentration of H+ ions using the formula: \([H+] = 10^{(-pH).\)

In this case,\([H+] = 10^{(-2.93).\)

Since the weak acid is not completely dissociated, the concentration of the weak acid ([HA]) can be approximated as its initial concentration, which is given as 0.190M.

The dissociation of the weak acid can be represented as follows:

HA ⇌ H+ + A-

The equilibrium expression for the dissociation is \(K_a = [H+][A-] / [HA]\).

Substituting the values into the equation:

\(Ka = (10^{(-2.93)})(10^{(-2.93)}) / 0.190.\)

Calculating the value gives us:

\(Ka = 1.7 * 10^{-3.\)

Therefore, the acid ionization constant (Ka) for the weak acid is approximately \(1.7 * 10^{-3}\).

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The force exerted by the biceps muscle would be equal to the weight of the carton of milk, which is 2.00 kg or 19.6 Newtons of force.

What is the force?

Force is an action that can cause an object to move, stop, or change its direction or shape. It is defined as a vector quantity, meaning it has both magnitude and direction. Forces can be either contact forces, like pushing or pulling, or forces at a distance, such as gravity, electricity, or magnetism.

Assuming the arm is straight out from the body and the length of the arm is 30 cm, the force exerted by the biceps muscle would be approximately 20 Newtons.

In this case, the force is equal to the weight of the carton of milk (2.00 kg) multiplied by the acceleration due to gravity (9.8 m/s2). This gives a force of 19.6 Newtons. Multiplying this force by the length of the arm (30 cm) gives a torque of 588 Nm.

Assuming the biceps muscle can generate a maximum torque of 600 Nm, the force it must exert to hold the carton of milk at arm's length would be 19.6 N x (600 Nm / 588 Nm) = 20 N.

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The total time taken by the mass to travel a total distance of 6A is 3T. This is because the spring-mass system is in simple harmonic motion (SHM).

According to SHM, the mass's deviation from equilibrium is represented by a sinusoidal function that oscillates between +A and -A.

The time it takes for the mass to complete one cycle or return to its starting position is the system's period (T). Given that the mass has moved a total of 6A, it must complete two cycles.

As a result, it will require 2T for the mass to move 2A. The remaining distance of 4A will be covered in another T since the mass oscillates with a T period.

The mass will move 6A's worth of distance in total, requiring 3T.

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Answer:

During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. More neutrons are also released when a uranium atom splits. These neutrons continue to collide with other uranium atoms, and the process repeats itself over and over again.

Explanation:

In nuclear fission the nucleus of an atom breaks up into two lighter nuclei. The process may take place spontaneously in some cases or may be induced by the excitation of the nucleus with a variety of particles (e.g., neutrons, protons, deuterons, or alpha particles) or with electromagnetic radiation in the form of gamma rays. In the fission process, a large quantity of energy is released, radioactive products are formed, and several neutrons are emitted. These neutrons can induce fission in a nearby nucleus of fissionable material and release more neutrons that can repeat the sequence, causing a chain reaction in which a large number of nuclei undergo fission and an enormous amount of energy is released. If controlled in a nuclear reactor, such a chain reaction can provide power for society’s benefit. If uncontrolled, as in the case of the so-called atomic bomb, it can lead to an explosion of awesome destructive force.

Answer:

In nuclear fission, atoms are split apart, which releases energy. All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms. During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation.

Answer:

4 Because Hypothesis sentence always have to be "If" and Then a "then"

Answer:

If this is what your asking?

Explanation:

The concept of time is self-evident. An hour consists of a certain number of minutes, a day of hours and a year of days. ... Time is represented through change, such as the circular motion of the moon around Earth. The passing of time is indeed closely connected to the concept of space

A) To find the total resistance, we need to calculate the equivalent resistance of the resistors in series and parallel. From the given circuit, it seems that R1 and R2 are in series, and R3 is in parallel to the combination of R1 and R2.

The resistance of R1 and R2 in series can be added:

R1 + R2 = 5 Ω + 10 Ω = 15 Ω

The total resistance of R1 and R2 in series is 15 Ω.

The parallel combination of R1, R2, and R3 can be calculated using the formula:

1 / (R1 + R2) = 1 / 15 Ω

Adding R3 in parallel to this combination:

1 / (R1 + R2) + 1 / R3 = 1 / 15 Ω + 1 / 15 Ω = 2 / 15 Ω

Taking the reciprocal of the sum gives the total resistance:

1 / (2 / 15 Ω) = 15 Ω / 2

The total resistance is 7.5 Ω.

B) To find the current, we can use Ohm's Law (I = V / R), where V is the voltage and R is the resistance.

In this case, the voltage across the circuit is given as 1.5 V. Using the total resistance of 7.5 Ω:

I = 1.5 V / 7.5 Ω = 0.2 A or 200 mA

The current flowing through the circuit is 0.2 A or 200 mA.

A) To find the total resistance, we need to calculate the equivalent resistance of the resistors in series and parallel. From the given circuit, it seems that R1, R2, and R3 are in series.

The total resistance is the sum of R1, R2, and R3:

R_total = R1 + R2 + R3 = 50 Ω + 100 Ω + 150 Ω = 300 Ω

The total resistance is 300 Ω.

B) Since all resistors are in series, the current flowing through each resistor will be the same. To find the current, we can use Ohm's Law (I = V / R), where V is the voltage and R is the resistance.

The voltage across the circuit is given as 25 V. Using the total resistance of 300 Ω:

I = 25 V / 300 Ω = 0.0833 A or 83.3 mA (rounded to 3 decimal places)

The current flowing through each resistor is approximately 0.0833 A or 83.3 mA.

C) The voltage across each resistor can be calculated using Ohm's Law (V = I * R), where I is the current and R is the resistance.

Voltage across R1: V1 = I * R1 = 0.0833 A * 50 Ω = 4.165 V

Voltage across R2: V2 = I * R2 = 0.0833 A * 100 Ω = 8.33 V

Voltage across R3: V3 = I * R3 = 0.0833 A * 150 Ω = 12.495 V

The voltage across R1 is approximately 4.165 V, across R2 is approximately 8.33 V, and across R3 is approximately 12.495 V.

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Answer:

267 m

Explanation:

v=λf

v= \(2.99*10^8\)m/s

λ=?

f=\(1.12*10^6\)Hz

\(2.99*10^8=(1.12*10^6)\)λ

λ=267 m

The statement predicts magnetic flux toward being 37.82*10⁻⁷ Wb, 131.73*10⁻⁷ Wb and 131.73*10⁻⁷ Wb

It typically sits between the engine and the ignition module of your car. When the automobile key is turned, solenoids (also known as start solenoids or starter relay) operate by combining big electric pulses from your vehicle's charge with smaller electrical impulses from ignition system.

(a). Flux is given by

Ф= BACosФ

μ₀ηIL² cos0

= 4*π*10⁻⁷*1370*3.11*0.0275²

=  37.82*10⁻⁷ Wb

(b). Here diameter and length are equal

Ф = BACosФ

    = μ₀ηI(π(L/2)²)cos 0

    = 4*π*10⁻⁷*1370*3.11*3.14*(0.028)²

    = 131.73*10⁻⁷ Wb

(c). Here as length is greater than diameter the flux will be same as flux    on solenoid        

Ф = 131.73*10⁻⁷ Wb

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The complete question is-

A single-turn square loop of side L is centered on the axis of a long solenoid. In addition, the plane of the square loop is perpendicular to the axis of the solenoid. The solenoid has 1370 turns per meter and a diameter of 7.70 cm, and carries a current of 5.11 A.

Part A: Find the magnetic flux through the loop when L= 2.75 cm .

Part B: Find the magnetic flux through the loop when L= 5.60 cm .

Part C: Find the magnetic flux through the loop when L= 13.5 cm .

Answer:

67.5

Explanation:

d = (Vo+ v/2)t

d = (150/2)(0.9)

d = 67.5

Answer:

The driver of the Taurus would be able to see a vehicle on top of a 15-foot overpass at a minimum distance of 112.5 feet.

Explanation:

To solve this problem, we need to use the concept of similar triangles. Let's assume that the Ford Taurus is a point, and draw a right triangle representing the Taurus, the overpass, and the vehicle on top of the overpass, as shown below:

          * vehicle

          |

          |

          |

 ---------+-------  overpass

          |

          |

          |

          T   rearview mirror

Let's use h to represent the height of the vehicle on top of the overpass, and d to represent the minimum distance at which the driver can see the vehicle in the rearview mirror. Using similar triangles, we have:

h / d = 17 / (d + L)

where L is the horizontal distance from the Taurus to the base of the overpass. We can solve for d by cross-multiplying and simplifying:

h(d + L) = 17d

hd + hL = 17d

d = hL / (17 - h)

Now, let's substitute h = 17 feet and L = 15 feet (assuming the Taurus is in the middle of the lane), and calculate d:

d = 17 * 15 / (17 - 15) = 255 / 2 = 127.5 feet

Therefore, the driver of the Taurus would be able to see a vehicle on top of a 17-foot overpass at a minimum distance of 127.5 feet.

For a 15-foot overpass, we can repeat the calculation with h = 15 feet:

d = 15 * 15 / (17 - 15) = 225 / 2 = 112.5 feet

Therefore, the driver of the Taurus would be able to see a vehicle on top of a 15-foot overpass at a minimum distance of 112.5 feet.

Answer:

I think it's letter b.

correct me if my answer is wrong.

Initial velocity = \(V_0 = 50\frac{m}{s}\)

Height = H = 100 m

Acceleration due to gravity = g = 10 m/s^2

Time of flight = ?

Angle of projection= θ(theta) = ?

Range attained = ?

A) The Relation between Height and Total time of flight is given by,

                                              \(T = 2(\sqrt\frac{2H}{g})\\\\T = 2( \sqrt\frac{2x100}{10})\\\\T = 2(\sqrt\frac{200}{10})\\\\T = 2(4.47)\\\\T = 8.94 seconds\)

B) Total time of flight is given by,

                                             \(H = \frac{V_0^2Sin^2(theta)}{2g}\\\\100 x2x10 = 50^2Sin^2(theta)\\\\2000 = 2500Sin^2(theta)\\\\\frac{2000}{2500} = Sin^2(theta)\\\\Sin^2(theta)= \frac{4}{5}\\\\\)

Square root on both sides,

                                            \(Sin(theta) = \frac{2}{\sqrt{5}}\\\\theta = Sin^{-1}(\frac{2}{\sqrt{5} })\\\\theta = 63.4 degrees\)  

C) The range attained is given by,

                                           \(R = \frac{V_0^2}{g} xSin2(theta)\\\\R = \frac{50^2}{10} x Sin(2x63.4)\\\\R = 250 x 0.8\\\\R = 200meters\)          

Answer:

a = 6 [m/s²]

Explanation:

To solve this problem we must use the following equation of kinematics

\(v_{f} =v_{o} +a*t\)

where:

Vf = final velocity = 58 [m/s]

Vo = initial velocity = 10 [m/s]

a = acceleration [m/s²]

t = time = 8 [s]

Now replacing:

58 = 10 + (a*8)

58 - 10 = 8*a

48 = 8*a

a = 6 [m/s²]

Answer:

2.64 m/s

Explanation:

Given that a 600 kilogram great "yellow" shark swimming to the right at a speed of 3 meters traveled each second as it tries to get lunch. An unsuspecting 100 kilogram blue fin tuna is minding its own business swimming to the left at a speed of 0.5 meters traveled each second. GULP! After the great "yellow" shark "collides" with the blue fin tuna

Momentum = MV

Momentum of the yellow shark before collision = 600 × 3 = 1800 kgm/s

Momentum of the tun final before collision = 100 × 0.5 = 50 kgm/s

Total momentum before collision = 1800 + 50 = 1850 kgm/s

Let's assume that they move together after collision. Then,

1850 = ( 600 + 100 ) V

1850 = 700V

V = 1850 / 700

V = 2.64285 m/s

Therefore, the momentum of the shark after collision is 2.64 m/ s approximately

Answer:disturbance

A wave is a  disturbance  that carries  energy  from one place to another.

Explanation:

edg2020

Answer:

its disturbance and energy for short

Explanation:

Answer:

mass=force/acceleration

m=10/20

m=0.5kg

Answer:

D. Refracted

Explanation:

At the point when light passes from a less thick to a more thick substance, (for instance passing from air into water), the light is refracted (or bowed) towards the ordinary. The bowing happens on the grounds that light voyages all the more gradually in a denser medium. The answer is D, refracted.

Gas particles can change to solid particles if the temperature decreases.

The state of matter of a substance is determined by its temperature and pressure. When the temperature of a gas decreases, its particles lose kinetic energy and slow down. This decrease in kinetic energy leads to a decrease in the average speed of gas particles.

As the temperature continues to decrease, the particles lose energy and move closer together. At a certain temperature known as the condensation point or the freezing point, the gas particles no longer have enough energy to overcome the intermolecular forces holding them together.

At this point, the gas undergoes a phase transition and changes into a solid. The process of gas turning into a solid is called condensation or freezing, depending on the specific substance.

During condensation, the gas particles arrange themselves in a more orderly and structured manner, forming a solid. The transition from gas to solid involves the release of energy, known as heat of fusion.

In summary, when the temperature of a gas decreases below its condensation or freezing point, the gas particles lose energy, slow down, and eventually come together to form a solid.

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Answer: it’s Nonpolar

Explanation:

Atoms with small differences in their electronegativities are said to form nonpolar covalent bonds.

Answer:

caden

Explanation:

To determine the ratio of turns of the transformer, we can use the principle of conservation of power, which states that power in equals power out in an ideal transformer.

The power input to the hair dryer is:

P = VI = (8 A)(114 V) = 912 W

The power output of the transformer should be the same as the input power, so we can use this equation to find the current in the secondary circuit:

P = VI = (I_s)(237 V)

where I_s is the current in the secondary circuit. Solving for I_s, we get:

I_s = P/V_s = (912 W)/(237 V) = 3.85 A

Now we can use the turns ratio equation to find the ratio of the turns in the transformer:

N_p/N_s = V_p/V_s = (114 V)/(237 V)

where N_p and N_s are the number of turns in the primary and secondary coils, respectively. Solving for N_p/N_s, we get:

N_p/N_s = 0.481

Therefore, the ratio of turns in the transformer should be approximately 0.481.

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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

Answer:

It moves in the direction in which the force is applied from.

Driving behind a large truck on the highway can be intimidating, but it's important to be aware of the truck driver's blind spots to ensure your safety and the safety of others on the road.

Blind spots, also known as "no-zones," are areas around the truck where the driver's visibility is limited. These blind spots are much larger than those of a car, and they extend to the sides, front, and rear of the truck. If you cannot see the driver's face in their side mirror, then you are likely in their blind spot. In addition, if you cannot see the truck's side mirrors, the driver probably cannot see you. To avoid being in a truck's blind spot, it's best to stay a safe distance behind the truck and try to pass it quickly and safely when necessary. Always use your turn signals and make sure the truck driver sees you before making any lane changes. Remember that large trucks also require more space to stop, so avoid cutting in front of them too closely. By being aware of a truck's blind spots and taking extra precautions, you can help keep the roads safe for everyone.

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To determine the current drawn by an incandescent lamp, you can use Ohm's Law, which states that current (I) equals power (P) divided by voltage (V). In this case, the power is given as 100 watts and the voltage is 130 volts. However, the lamp is operated at 110 volts.

To calculate the current, we need to convert the power to the actual operating voltage. We can use the formula P = IV, where P is the power, I is the current, and V is the voltage.
First, let's find the current at 130 volts:
I = P / V
I = 100 watts / 130 volts
I ≈ 0.769 amps
Next, we'll calculate the current at 110 volts:
I = P / V
I = 100 watts / 110 volts
I ≈ 0.909 amps

Therefore, the current drawn by the incandescent lamp when operated at 110 volts is approximately 0.909 amps.

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S, P, D, and f are the four potential subshells in quantum mechanical theories. The angle momentum quantum number, l, is represented by these letters in numerical form.

A subshell is a group of states that make up a shell and are identified by the azimuthal quantum number, l. Subshells s, p, d, and f are represented by the values l = 0, 1, 2, and 3, respectively. The equation 2(2l + 1) states how many electrons can fit into a subshell at once.

The circular routes that electrons take in an atom's shells as they circle its nucleus. (In line with the Bohr Model). The primary quantum number, n, serves as a representation of the shells. Additionally, each shell is divided once more into many subshells.

Four subshells are present: s, p, d, and f.

For instance, the first shell has just one sub-shell, which is s.

There are two sub-shells in the second shell: s and p.There are three sub-shells in the third shell: s, p, and d.The remaining shells are made up of all four subshells: s, p, d, and f.

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