What causes water to move from the liquid part of the hyrdrosphere to the cyrosphere?

Answer: \(-\frac{1}{2}\times \frac{d[Br^.]}{dt}=+\frac{d[Br_2]}{dt}\)

Explanation:

Rate of a reaction is defined as the rate of change of concentration per unit time.

Thus for reaction:

\(2Br^.\rightarrow Br_2\)

The rate in terms of reactants is given as negative as the concentration of reactants is decreasing with time whereas the rate in terms of products is given as positive as the concentration of products is increasing with time.

\(Rate=-\frac{d[Br^.]}{2dt}\)

or \(Rate=+\frac{d[Br_2]}{dt}\)

Thus \(-\frac{d[Br^.]}{2dt}=+\frac{d[Br_2]}{dt}\)

Answer:

Acceleration would be \(1.96\) times the initial value.

Explanation:

The vehicle is in a centripetal motion as it rounds the circular curve. Acceleration of the vehicle during the motion would be:

\(\displaystyle a = \frac{v^{2}}{r}\),

Where:

In this question, \(r\) stays the same since the vehicle is rounding the same curve. Acceleration of the vehicle would be proportional to the square of velocity.

The new velocity of the vehicle is \((70 / 50)\) times the original one. Hence, the new acceleration would be \((70 / 50)^{2} = 1.96\) times the original value.

The force required to just lift the Y end from the ground is 160 N, this force would not be sufficient to lift the X, as it is less than the reaction force at X.

Mass of the XY road, m = 40 kg

Weight of the road, W = 40×10 = 400 N

length of the rod, l = 5.0 m

Center of gravity is 2.0 m from the X end.

Let the vertical force required is P. Then taking the moment about x-axis.

P × 5 = 400 × 2

P = 160 N

Now, the downward force on X axis, = (400 × 3)/5 = 240 N

As downward force 240 N is more than the vertical force 160 N. So, it will not be sufficient to lift the X-end from the ground.

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Answer:

mass

Explanation:

Mass (M) is the measure of the amount of matter in an object. Mass is measured in grams (g). Mass is measured on a balance by comparing the object against other objects with known masses.

Answer:

Mass is the amount of matter in a substance

Answer:

The differential equation gives the angular velocity as sqrt(k/m) where m = mass of the object = 125/9.8 = 12.755.     Where k = spring constant, pi = 3.14

We are told that the period is 3.56 seconds. But angular velocity = (2*pi)/P     where p (period) = 3.56 seconds.

Equating the two angular velocity expressions gives (2*pi)/3.56 = sqrt(k/12.755)

Solving for k, we get k = 39.73.

Explanation:

Answer:

5m/sec square

Explanation:

because F=M×A

A=F/M

.............................

Answer:

5m/sec square

Explanation:

because force = mass x acceleration

A=F/M

Answer:

yes

Explanation:

Because they have logic duh!!! ;D

that is true. most ppl in general cant resist flattery. some can resist tho,  bc they are smart.

Answer:

let the voltages of the cell be V and R the equivalent resistance of the circuit.

I1=RV∵ only one cell connected  ;

I2=RV+V=R2V∵ two cells connected in series  ;

I3=RV+RV=R2V∵ two cells connected in parallel ⇒ total current is same as sum of the currents due to each.

Now , 

LHS = 3I3I2=3R2VR2V=3(R24V2) 

RHS = 2I3(I1+I2)=2R2V(RV+R2V)=2R2VR3V=3R2therefore, LHS = RHS   

Answer: The answer is C.

Explanation:Just took the quiz

The statement about the relationship between rates of reaction and concentration of reactants true is reactions are slower when there is lower concentration of reactants.

The chemical reaction is the reaction between two reactants which led to the formation of products.

The products are substances which forms after reaction. The reactants are the substances which are original materials.

Oxygen is needed for the reactions that cause artifacts to decay in the ocean.

Some ancient shipwrecks have been well-preserved deep in the ocean.

Reviewing the information in the data table, we conclude that reactions are slower when there is lower concentration of reactants.

Thus, the correct option is C.

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A parallel circuit is described as a type of circuit in which there are several current paths.

A parallel circuit is a type of electrical circuit where two or more components are connected in parallel, and each component has its path for electric current flow. The path is separate from all other parts, and each has the same voltage level. The current divides among each path according to the resistance value of the components in the circuit. Parallel circuits are used in various applications, including lighting in households, street lights, and other electronic devices. In a parallel circuit, the voltage across each component is the same, and the total current in the circuit is equal to the sum of the current flowing in each branch.

A parallel circuit is used in the household and other applications to prevent other electrical devices from overloading and cutting off electrical supply, for example, when several devices are plugged into a power source. In a parallel circuit, the voltage divider circuit can be used to divide the voltage among resistors. This is because the voltage across each component in a parallel circuit is the same, and we can use the equation V = IR to calculate the voltage divider.

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The mean measurements produced by the two types of calipers, micrometer caliper and vernier caliper, are compared to determine if there is a significant difference between them. The significance level chosen for the comparison is alpha=0.01.

To assess the difference between the mean measurements, a paired t-test can be conducted. The null hypothesis (H0) states that there is no significant difference between the means of the two calipers, while the alternative hypothesis (H1) states that there is a significant difference.

Using the given data, the mean measurements for each inspector using the micrometer caliper and vernier caliper can be calculated. Then, the paired t-test can be performed, considering the sample size, means, and standard deviations.

Based on the results of the t-test, if the calculated p-value is less than the chosen significance level (0.01), the null hypothesis can be rejected, indicating that there is a significant difference between the mean measurements produced by the two types of calipers. On the other hand, if the p-value is greater than 0.01, there is not enough evidence to reject the null hypothesis, suggesting that there is no significant difference between the mean measurements.

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The measurements from the Micrometer Caliper and Vernier Caliper can be compared using a paired t-test. This statistical method will test if there is a significant difference in the means with a given significance level (alpha) of 0.01.

To answer this question, we can perform a paired t-test to compare the mean of the measurements from the Micrometer Caliper and Vernier Caliper. A paired t-test is a statistical method used to compare two paired (associated) groups to determine whether there is a significant difference in the means of these groups. The standard significance level (alpha) is typically set at 0.05, but this question stipulates an alpha of 0.01. Based on the results provided, a mean for each type of caliper would be calculated, then the differences between the paired measurements are calculated. Those differences are then used to calculate the t-test statistic. A different t-distribution is used depending upon whether the variances of the two groups are assumed to be equal or not.

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The strength of the magnet pole (option D) will not be affected by the induced electromotive force (e.m.f) when a magnet is in motion relative to a coil.

When a magnet is in motion relative to a coil, it induces an electromotive force (e.m.f) in the coil due to the changing magnetic field. This induced e.m.f. can cause various effects, but it does not directly affect the strength of the magnet pole (option D). Option A, the motion of the magnet, is directly related to the induction of the e.m.f. When the magnet moves, the magnetic field through the coil changes, inducing the e.m.f.

Option B, the resistance of the coil, affects the amount of current flowing through the coil when the e.m.f is induced. Higher resistance can limit the current flow. Option C, the number of turns of the coil, affects the magnitude of the induced e.m.f. More turns increase the induced voltage.

However, the strength of the magnet pole (option D) itself is independent of the induced e.m.f. It is determined by the properties of the magnet, such as its magnetization and magnetic material. The induced e.m.f does not alter the intrinsic strength of the magnet pole.

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Answer:

Explanation:

it is a coal power plant , nuclear power is economical and does not fluctuate as much as wind or solar power.

Unlike coal, it is considered clean in terms of the amount of greenhouse gas emissions produced by the power plant itself, although uranium mining and processing are not without risks and environmental impact

Answer:

1200 N

Explanation:

First, we need to calculate how much time the force was applied. If the stone traveled at 20.0m/s and made a 0.20 cm deep dent, the time is equal to

Where the distance is 0.20 cm = 0.0020 m and the average speed can be calculated as:

Therefore, the time is equal to

Then, the force can be calculated using the following equation for impulse

Where m is the mass, v is the speed and t is the time, so replacing m = 0.012 kg, v = 20 m/s and t = 0.0001 s, we get

So, the average force was 1200 N

During autumn, the storm travels at a speed of 20 m/s, then the average force the car has to exert to stop the damaging hail storm is 1200 N.

A force in physics is an effect that has the ability to modify an object's motion. A bulk object's velocity can vary, or accelerate, as a result of a force. Intuitively, a push or a pull can be used to describe force. Being a vector quantity, a force also has magnitude and direction. The SI unit of newton is used to measure it (N). The letter F symbolizes for force.

As per Newton's second law's original formulation, an object's net force is equal to the speed at which momentum is changing over time.

According to the given information in the question,

Speed, s= 20 m/s

Average speed, s = Distance/Time

s = [v(i) + v(f)] / 2

s = (20 + 0)/2

s = 10 m/s

Now calculate the time,

Time, t = 0.0020/10

t = 0.0002 seconds.

Use the equation for impulse,

f × t = mv

⇒f = mv/t

f= (0.012 × 20)/0.0002

f = 1200 N

Therefore, the force applied is 1200 N.

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The correct option is D, The one of statements concerning a convex mirror is true. The picture might be toward the replicate than one produced with the aid of a plane mirror in its vicinity.

A convex mirror, also known as a diverging mirror, is a curved mirror that bulges outward. Unlike a concave mirror, which curves inward and can focus light to create real images, a convex mirror reflects light outwards and cannot create real images.

Convex mirrors are commonly used in situations where a wide field of view is required, such as in car side mirrors, security mirrors, and in stores to help prevent theft. The bulging surface of the mirror allows it to reflect a wider angle of light than a flat mirror or concave mirror would, making it useful for surveillance and safety purposes. Due to their unique reflective properties, convex mirrors can also produce virtual images that appear smaller and farther away than the actual object being reflected.

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Complete Question: -

Which one of the following statements concerning a convex mirror is true?

a) Such mirrors are always a portion of a large sphere.

b) The image formed by the mirror is sometimes a real image.

c) The image will be larger than one produced by a plane mirror in its place.

d) The image will be closer to the mirror than one produced by a plane mirror in its place.

e) The image will always be inverted relative to the object.

sound in vacuum

Explanation:

because as u turn a vacuum on it make noise instant when u make sound from a solid object it takes a while to do thing starting slow then going fast in different objects

Answer:

No

Explanation:

Some objects gain momentum.

Answer:

B. False

Hope you could understand.

If you have any query, feel free to ask.

Answer:

f = 99.96 N

Explanation:

Weight of Mr. Tracy, W = 85 kg

The coefficient of sliding friction between his socks and the floor is 0.12.

We need to find the force of friction that opposes Mr. Tracy's motion down the hall.

The force of friction is given by :

\(f=\mu mg\\\\f=0.12\times 85\times 9.8\\\\f=99.96\ N\)

So, the required force of friction is 99.96 N.

Answer:

600 km

multiply both

Explanation:

According to the given statement Mrs. Brown's electricity bill for the current month is $5000.00.

To calculate Mrs. Brown's electricity bill for the current month, we need to determine the total number of kilowatt-hours (kWh) she has consumed and apply the corresponding rates.

1. Calculate the electricity usage:

  Current meter reading - Previous meter reading
  20,300 kWh - 17,800 kWh = 2,500 kWh

2. Determine the cost for the first 2000 kWh:

  $1.00/kWh * 2000 kWh = $2000.00

3. Determine the cost for the remaining kWh:

  500 kWh * $3.50/kWh = $1750.00

4. Add the fuel adjustment charge:

  $0.50/kWh * 2500 kWh = $1250.00

5. Calculate the total bill:

  $2000.00 + $1750.00 + $1250.00 = $5000.00


To calculate the electricity bill, we first find the difference between the current and previous meter readings.

In this case, Mrs. Brown used 2,500 kWh.

For the first 2000 kWh, the cost is $1.00 per kWh, resulting in a charge of $2000.00.

For the remaining 500 kWh, the cost is $3.50 per kWh, totaling $1750.00.

Additionally, a fuel adjustment charge of $0.50 per kWh is added to the bill. This amounts to $1250.00.

Finally, we add up all the charges to get the total bill, which is $5000.00.

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Answer:

Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth's lithosphere—split apart from each other. ... As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense

Explanation:

hope it helps stay safe

Answer:

Magma comes out of the rift valley.

Magma cools to rock and hardens.

Rock is pushed away as new rock is formed at MOR.

Oceanic crust and continental crust meet at the trench.

Oceanic crust bends down under the continental crust.

Gravity pulls rock towards mantle.

Rock melts to mantle.

Explanation:

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The following is a legitimate radioactive decay because both charge and mass number are conserved:

²¹²/₈₄Po = ²⁰⁸/₈₂Pb + ⁴/₂He.

Radioactivity, also known as radioactive decay, is a phenomenon in which certain atomic nuclei are spontaneously transformed into other atomic nuclei. Radioactive decay is a type of spontaneous decomposition that occurs when an unstable atomic nucleus emits particles, energy, or electromagnetic waves as a result of nuclear rearrangement.

Radioactivity is an extremely essential phenomenon in nuclear physics and is used in a variety of applications, including medicine, energy generation, and industrial processing. Gamma rays, beta particles, and alpha particles are examples of radiation that are released by radioactive materials.

In general, radioactive decay happens when an atomic nucleus emits alpha particles, beta particles, or gamma rays, resulting in the transformation of one nucleus into another. The equation is used to represent the process. Both the mass number and the charge must be conserved in radioactive decay. Alpha decay, beta decay, and gamma decay are the three forms of radioactive decay. Alpha decay, beta decay, and gamma decay are examples of radioactive decay that are common.

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Answer:

It demonstrates that the narrator is surrounded by nature.

Explanation:

Walt Whitman's "Crossing the Brooklyn Ferry" is a free verse poem written about the speaker's return trip on a ferry. He talks about his daily commute on the Brooklyn ferry, like the other commuters, and how they all share the same experience.

The given lines are from the very first stanza of the poem. The speaker repeats "face-to-face" when talking about nature. He sees the "flood-tide below" and the "clouds" high in the sky. This repetition demonstrates that he is surrounded by nature, amidst the throng of people around him. This shows the speaker's attitude of seeing the beauty of nature in any way he can, despite the bustle of commuting from Brooklyn to Manhattan.

Thus, the correct answer is the second option.

Answer:

B

Explanation:

edge 2023

The thing that waves travel through is called a medium.

A medium can be any substance or material that allows waves to propagate or travel through it.

There are different types of waves such as mechanical waves and electromagnetic waves, and each of them requires a specific type of medium to travel through.

Mechanical waves, such as sound waves, require a physical medium to travel through, which means they need a substance like air, water, or solids to propagate. As the waves travel through the medium, the particles of the medium vibrate and transfer energy from one particle to the next.

Electromagnetic waves, such as light waves and radio waves, do not require a physical medium and can travel through a vacuum or empty space. These waves are made up of electric and magnetic fields that oscillate perpendicular to each other and move at the speed of light.

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Hooke's law allows to find the results for the questions about the spring are:  

    a) The spring constant is: k = 75 N / m

    b) The elongation is: x = 0.08 m

Hooke's law states that the restoring force in a spring is proportional to the elongation of the spring from its equilibrium position.

             F = - k x

Where f is the force, k is the spring constant, and x is the displacement.

a) Indicate that the elongation is 0.04 m and the applied force is 3N.

           \(k = \frac{F}{x}\)  

           k = \(\frac{3}{0.04}\)  

           k = 75 N / m

b) They ask the extension of the spring when a force of 6 N is applied.

         \(x= \frac{F}{k}\)  

          x = \(\frac{6}{75}\)  

          x = 0.08 m

In conclusion using hooke's law we can find the results for the questions about the spring are:  

    a) The spring constant is: k = 75 N / m

    b) The elongation is: x = 0.08 m

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