Use the following formula and information to find the depth of the seafloor.

Depth = 1/2 * T * 1500

Where T is two-way travel time in seconds, depth is in meters, and 1500 is speed in meters per second.

What is the depth of the seafloor if two-way travel time is 2.62 seconds?

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The month which has an average daily temperature of around 41 degrees is May. Hence, option A is the correct.

A thermometer is a device used to gauge a system's temperature. In a broad variety of activities, including as industry, science and research, and medical treatment, temperature measuring is crucial.

Galileo Galilei, an Italian mathematician, and physicist, is largely credited with developing the thermometer. In his device, constructed in 1592, a glass vessel's inversion caused the air inside to expand or contract, which in turn altered the amount of liquid that was half-filled into the vessel's long, accessible neck.

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Electric current can be produced in a wire by simply moving a magnet into or out of a wire coil. Option A is correct.

According to Faraday's law of electromagnetic induction, the rate of change of magnetic flux link with the coil is responsible for generating emf in the coil to result in the flow of amount of current .

The phenomenon of inducing voltage by changing the magnetic field around a conductor will be Electromagnetic Induction.

So in order to increase the current, we need to increase the EMF;

so we can increase it by;

1) Increasing the number of turns

2) Increase the area of the loop

3) By moving the magnet faster

Hence, option A is correct.

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Answer:

Below

Explanation:

The basic law here is :

V = IR

  = 250 (25) = 6250  V

It is the true statement, that if we double the force acting on a body, the acceleration will double.

In terms of both speed and direction, acceleration is the rate at which velocity varies over time. Acceleration refers to the change in speed or direction of an item or point travelling straight forward. Due to the constant change in direction, motion on a circle accelerates even while the speed is constant. Both impacts help to accelerate all other types of motion.

In order to be a vector quantity, acceleration must have both a magnitude and a direction. As a vector quantity, velocity is also. A time interval's velocity vector change divided by that interval's duration is the definition of acceleration.

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To calculate the experimental gravitational acceleration from the average (mean) time of fall, we can use the equation:

g = (2h) / (t^2)

Where:

g is the gravitational acceleration,

h is the height from which the object is dropped, and

t is the average time of fall.

Let's assume that the height from which the object is dropped is h = 1 meter and the average time of fall is t = 2 seconds.

Substituting these values into the equation, we have:

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

g = 2 / 4

g = 0.5 m/s^2

Therefore, the experimental gravitational acceleration calculated from the average time of fall is approximately 0.5 m/s^2.

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Answer:

See below

Explanation:

Filling in the definitions:

acceleration

vector quantity

deceleration

time

slope

zero

positive

Answer:9700 N

Explanation: i js know

Answer:

B

Explanation:

The wording of this question leaves a lot to be desired.  The way it reads, it should be 60J., but I'm almost certain that is not the intended answer.

The answer looks like it should be 100J of some kind. It's worded in such a way that it does 80 J of work on the surroundings and in addition, releases another 20 joules in the form of heat. It doing this, the system should be losing 100 Joules so the answer should be B.

There are no guarantees here. That is just my best proposal.

Explanation:

a. " for every action there is an equal and opposite reaction".

b. The electric fan does not stop moving just after the switch turns off because of rational inertia force.

c. The force applied to first vehicle is 120N.

d. In my view it doesn't support the law of conservation of momentum. Momentum of 1 and 2 object before the collision is equal to the total momentum of two object after collision.

A simple machine that is a flat surface set at an upward angle sloping at any point less than a 90 degree angle is called an inclined plane.

A sloping surface makes up an inclined plane, which is utilized to lift heavy objects. The mechanical advantage of the plane is that less force is needed to drive an item up the slope than is necessary to lift its weight (discounting friction).

As a tool for lifting or lowering a load, an inclined plane, sometimes referred to as a ramp, is a flat supporting surface that is slanted at an angle from the upward direction with one end higher than the other.

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Both the average and instantaneous velocities well be same over the given interval if the acceleration is zero.

Instantaneous velocity is the rate of differential change of displacement with respect differential change in time. Mathematically -

v = dx/dt

Given is the acceleration of a school bus over a given time interval as zero.

For acceleration over a given time interval to be zero, it must be ensured that the the velocity of the object should remain constant. Mathematically-

a = (v - u)/(t₂ - t₁)

For acceleration [a] = 0, v = u. Therefore -

a = 0

The instantaneous velocity for zero acceleration between the time interval t₁ to t₂ will be equal to initial velocity only -

dx/dt = u          

This will be the instantaneous velocity and is equal to (u) at any instant.

Now -

dx = u dt

Integrating both sides, we get -

∫dx = ∫u dt

x = ut

Therefore, the average velocity will be =

v(avg) = x/Δt = ut/Δt

Now -

t = Δt for any specific time interval. Therefore -

v(avg) = ut/t = u

This is the average velocity and it is equal to (u).

Therefore, both the average and instantaneous velocities well be same over the given interval if the acceleration is zero.

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Answer:

Decreasing the angle to 10

Explanation:

Edge 2020

Answer:

stress tension tensile strength

Explanation:

The maximum stress which a material can withstand when it is pulled apart is its: stress tension tensile strength.

At the middle of his jump, Ukrainian Sergei Bubka had a mass of 79.8 kJ.

The amount of matter in a particle or object is represented by its mass, which is denoted by the symbol m. In the International System (SI), the kilogram serves as the default unit of mass (kg).

The resistance of the body to acceleration (change of velocity) when a net force is applied is known as inertia, and inertia may be measured experimentally using mass.

h=6.13 meters, mg=9.81 m/s2,

PEg= 4.80 ×10^3J

We will use the equation for gravitational potential energy and rearrange it to solve for mass because the mass is unknown.

PEg = mgh as a result.

PEg/gh = mass

mass = 4.80 ×10^3 / 9.81 x 6.13

79.8 kJ / mass.

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0.08 gram mass of magnesium oxide will be formed.

Mass is an intrinsic property in the mass of a body. It was the  traditionally believed to the  be related to the quantity of matters in the  physical body, until it is  discovery of the atom and  particle in physics.

Mass is quantitative measure of inertia a fundamental quantity of all matters.

2Mg + O 2→2MgO

Molar mass of Mg =24 g

Molar mass of MgO =40 g

No. of moles of O2=6.022×10^20/6.022×10^23

=0.001 mole of O2

No. of moles of Mg=0.486/24

=0.02 moles  of Mg

As moles of O 2

​ are less than 0.01, O 2

 is limiting reagent and it is  0.002 moles of MgO is formed.

⇒0.002×40=0.08 g of MgO

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A wave's period is the amount of time it takes for two crests to pass one wavelength apart at a certain location.

The formula for wave period is wavelength divided by velocity since the periods indicate that a wave's period is the inverse of its frequency. The frequency of a wave is measured in 1/s, often known as Hertz, whereas the period of a wave is measured in seconds (s) (Hz).

Each wave, period is typically expressed in seconds. Speed (V) divided by wavelength (V) yields the period (T) (S). Divide the length by the speed, for instance, 12 m divided by 6 m/s = 2 s to determine the period of a wave with a speed of 6 m/s and a wavelength of 12 m.

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When a stone is thrown straight upward and at the top of its path, its velocity is momentarily zero. The acceleration at that point is equal to the acceleration due to gravity, which is approximately 9.81 m/s².

Why is the acceleration at the top of its path due to gravity? The acceleration of the stone is due to gravity because gravity is the only force acting on it at that point. As the stone moves upward, gravity slows it down until it comes to a complete stop at the top of its path. At that point, the stone changes direction and begins to fall back to the ground under the influence of gravity. Therefore, the acceleration at the top of its path is equal to the acceleration due to gravity.

What is the formula for acceleration due to gravity?

The formula for acceleration due to gravity is: a = GM/r²

Where: a = acceleration due to gravity, G = gravitational constant, M = mass of the object attracting the stone (in this case, the mass of the Earth), r = distance between the stone and the center of the Earth (radius of the Earth in this case)

However, in most cases, we can use the average value of acceleration due to gravity, which is 9.81 m/s². This is because the acceleration due to gravity is almost constant at the surface of the Earth.

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At a distance of 2 cm from the axis of a straight conductor conducting current, the magnetic field is 12mT.

A straight conductor's magnetic field lines are concentric circles centred on the conductor. By employing the right hand thumb rule, one may determine the direction of magnetic field lines.

With increasing distance, a wire's magnetic field gets weaker. The electric field from a point charge is proportional to the inverse square of the distance, whereas the magnetic field is conversely

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The main factor that determines the stages of a star after the main sequence is the star mass. Depending on the mass, stars will develop as average stars -low mass- or giant stars -high mass-.

The star cycle is the sequence of changes that a star undergoes throughout its existence

Stars are born from the nebula, which is dust and gas particles condensation due to the gravity effect in the interstellar clouds.

These stellar clouds collapse and compose smaller regions, each of which later contracts and compose the stellar cores. This is a more advanced level of condensation.

Stelar cores are protostars that contract and increase their temperature until nuclear reactions occur. Hydrogen is converted into Helium and the new star gets born.

This new star is in its main sequence, which is the equilibrium point between gravity and nuclear fusion, which helps the star keeps stable as long as the fuel lasts.

Stars spend most of their lives in the main sequence until all hydrogen turns into helium and there is no more fuel left.

At this point, the star is a subgiant, and its core begins its contraction, increasing the star's temperature.

The star increases in size and luminosity, turning into a giant.

After the subgiant stage, the star enters a giant phase. The star can reach a size up to 100 times its current size.

When the core reaches a certain temperature, helium turns into carbon.

The following events depend on the star mass.

When average-sized stars run out of fuel, the red giant begins to disintegrate, losing its outer layers and exposing its core, which will become a white dwarf.

When fuel is over in the star, the gravitational collapse produces an explosion originating the supernova.

This neutron star is a celestial body that remains as a remnant after the explosion giving rise to a supernova.

In these cases, if the star core has a mass > 3 solar masses, the star collapses into a black hole.

In conclusion, the main factor that determines the stages a star follows after the main sequence is the star mass. Depending on the mass, stars will develop as average stars -low mass- or giant stars -high mass-.

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The safety factor for infinite life is 1.054 (approximately). Hence, option (A) is correct.

The cross-sectional area of the bar can be calculated as\(A = 22 mm x 30 mm = 660 mm²\). The effective area of the bar can be given as \(Ae = (22 x 30) - π/4 (10)²= 660 - 78.54= 581.46 mm²\). The maximum and minimum stresses can be given as:\(σmax = Fmax / Aeσmin = Fmin / Aeσmax = 27 x 10³ / 581.46σmax = 46.469 MPaσmin = -4 x 10³ / 581.46σmin = -6.875 MPa\). Therefore, stress amplitude can be given as,\(σa = (σmax - σmin) / 2σa = (46.469 - (-6.875)) / 2σa = 26.672 MPa\). Using Gerber’s parabolic equation for infinite life, we can write,\((σa / Sut)² + (σm / Sy)² = 1\) where,\(σm = (σmax + σmin) / 2 = (46.469 - 6.875) / 2σm = 19.297 MPa\). Also, we have to use the value of fatigue strength at infinite life (endurance limit). The factor of safety can be calculated as \(FS = Se / σaSe = Sut / (1.355 (1 - (1 / 2) * (Sy / Sut)²))Sy = 0.5 * Su = 0.5 * 500 MPaSy = 250 MPa\). Now, substituting the values in the equation for Se, \(Se = 500 / (1.355 (1 - (1 / 2) * (250 / 500)²))\), Se = 351.57 MPa. The equation for Gerber’s parabolic equation can be written as,\((σa / Sut)² + (σm / Sy)² = 1(σa / 500)² + (19.297 / 250)² = 1(σa / 500)² + 0.295 = 1(σa / 500)² = 0.705σa = ± 333.128 MPa\). Since we cannot consider negative stress,\(σa = 333.128 MPa\). Now, substituting the value of σa in the equation for FS, \(FS = Se / σaFS = 351.57 / 333.128FS = 1.054\). The safety factor for infinite life is 1.054 (approximately). Hence, option (A) is correct.

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Answer:

709.5 cal

Explanation:

masa m de la barra de aluminio = 100 g

temperatura ambiente = 27 ° C

Asumiremos que la barra de aluminio está en equilibrio térmico con el ambiente.

Esto significa que la temperatura inicial de la barra es de 27 ° C

temperatura final a la que la barra debe calentarse = 60 ° C

el aumento de temperatura ΔT será

ΔT = 60 ° C - 27 ° C = 33 ° C

capacidad calorífica específica c del aluminio = 0.215 cal/g°C

Calor C requerido = mcΔT

C = 100 x 0.215 x 33 = 709.5 cal

Answer:

Answer 3: When a balloon goes up higher in the air, its size will increase. Since there's less air in the upper atmosphere, there's less stuff pushing back on the balloon, and hence the pressure is lower, which allows the balloon to expand

Answer: C

Explanation:

As the balloon rises, the gas inside the balloon expands because the atmospheric pressure surrounding the balloon drops. The atmosphere is 100 to 200 times less dense at the float altitudes than on the ground. and as the air is heated inside the balloon it causes it to rise upwards (because it is lighter than the cooler air on the outside). When the pilot needs to bring the balloon down again, he simply reduces the temperature of the air inside the balloon causing it to slowly descend.

Explanation:

direction of electric field is same as that of force experienced by the test charge

Answer:

Comments/Reasoning                                               Calculations/Results

I used the equation for calculating electric field strength. E = F/q

I substituted the values of F and q in the equation to get

this value of E                                                              E= (4.1 x10-1)/(8.5 x10-7)                                                                                                                  

The electric field strength is                                4.8 × 105 newtons/coulomb

Explanation:

edmentum sample answer

The  centripetal force the passenger experience is 30167.52 N

The centripetal force experienced by the passenger can be calculated using the formula:

Fc = (m)(r)(ω^2)

where Fc is the centripetal force, m is the mass of the passenger, r is the radius of the loop, and ω is the angular speed of the roller coaster.

Given:

m = 80 kg

r = 12 m

ω = 3.14 rad/s

Substituting these values into the formula, we get:

Fc = (80 kg)(12 m)(3.14 rad/s)^2

Fc = 30167.52 N

Therefore, the passenger experiences a centripetal force of approximately 30167.52 N when the roller coaster reaches an angular speed of 3.14 rad/s.

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The driving force behind the movement of gas in and out of the blood is the difference in partial pressure between the respiratory gases, primarily oxygen and carbon dioxide. This process, called gas exchange, occurs in the lungs and tissues.

Gas exchange is essential for maintaining homeostasis and supplying oxygen to cells for aerobic respiration while removing carbon dioxide, a waste product. In the lungs, oxygen diffuses from the alveoli (air sacs) into the blood due to a higher partial pressure of oxygen in the alveoli compared to the blood. Simultaneously, carbon dioxide diffuses from the blood into the alveoli as its partial pressure is higher in the blood than in the alveoli. This gas movement happens across the respiratory membrane, a thin barrier that separates the alveolar air and blood in the pulmonary capillaries.

Similarly, at the tissue level, oxygen diffuses from the blood into the cells, where it is needed for cellular respiration. This occurs because the partial pressure of oxygen is higher in the blood than in the tissue cells. In contrast, carbon dioxide produced by cellular respiration moves from the cells into the blood due to its higher partial pressure in the cells compared to the blood. The blood then transports the carbon dioxide back to the lungs for elimination. In summary, the driving force behind gas movement in and out of the blood is the difference in partial pressure of respiratory gases, which allows for essential gas exchange in the body.

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The smallest particle size a scientist can observe using a scanning probe microscope would be a nanometer, therefore the correct answer is option B.

A recognized and accepted standard for measuring other amounts of the same sort is referred to as a unit of measurement. It is predetermined by custom or law.

As given in the problem, we have to find out what is the smallest particle size a scientist can observe using a scanning probe microscope.

1 millimeters = 1 × 10 ⁻³ meter

1 nanometer = 1 × 10⁻⁹  meters

Thus, the smallest particle size a scientist can observe using a scanning probe microscope would be a nanometer, therefore the correct answer is option B.

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Answer:

D.

Driving and talking on any type of cell phone increases the chance of missing traffic signals.

Explanation:

correct on edge2021

Answer:

the answer is d thank me later

Explanation:

Answer:

Ff = M g sin 5       where Ff is the force of friction opposing motion

Ff = .80 kg * 9.80 m/s^2 * .087 = .682 N

(note sin θ = θ     5 / 57.3 = .087 for angles less than about 10 deg)

Answer:

it is transverse wave

I know this because there is crest and trough where as longitudinal wave has compression and rarefraxtion

(a) The function x² - y² is a solution of the wave equation\(ztt = c²(zxx + zyy).\)

(b) The function cos(ct)cos(x) is a solution of the wave equation\(ztt = c²(zxx + zyy).\)

(c) The function cos(ct)sin(y) is a solution of the wave equation\(ztt = c²(zxx + zyy).\)

(d) The function sin(√2ct)cos(x + y) is a solution of the wave equation\(ztt = c²(zxx + zyy).\)

The wave equation ztt = c²(zxx + zyy) describes the behavior of waves in a medium, where z represents the displacement, t represents time, x represents the spatial coordinate in the x-direction, y represents the spatial coordinate in the y-direction, and c represents the wave speed.

To determine if the given functions are solutions of the wave equation, we need to substitute them into the equation and verify if the equation holds true.

(a) Substituting z = x² - y² into the wave equation, we find that the partial derivatives with respect to time and spatial coordinates satisfy the equation, thus making x² - y² a solution.

(b) Substituting z = cos(ct)cos(x) into the wave equation, we again find that the partial derivatives satisfy the equation, confirming that cos(ct)cos(x) is a solution.

(c) Substituting z = cos(ct)sin(y) into the wave equation, we find that the partial derivatives satisfy the equation, indicating that cos(ct)sin(y) is a solution.

(d) Substituting z = sin(√2ct)cos(x + y) into the wave equation, we observe that the partial derivatives also satisfy the equation, demonstrating that sin(√2ct)cos(x + y) is a solution.

Therefore, all four given functions (a), (b), (c), and (d) are solutions of the wave equation \(ztt = c²(zxx + zyy).\)

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