The normal force acts ________________________ to the surface and the friction force act _______________ to the surface.

Answer:

C.) The slinky particles move up and down

Explanation:

Transverse Wave-

A wave that has a disturbance perpendicular to the wave motion

Hello! This is the correct answer! Have a blessed day! :)

If you are in K12, please review the lesson! :)  It will give you some very helpful definitions!  I hope this helped!

The characteristics of the traveling waves we can find the correct answer for the movement of the particles in the transverse wave is:

The traveling wave movement is a way of transmitting energy without mass movement, it is formed by two movements united, an oscillatory movement and a displacement movement, there are two possibilities:

In both cases, the matter particles are oscillating around their equilibrium position and the wave is the one that has a displacement movement.

Let's review the claims:

a) False. The particle has an oscillatory motion, it does not have a net displacement

b) False. The movement is oscillatory

c) True. As the wave is transversal, the oscillatory movement from top to bottom.

In conclusion using the characteristics of the traveling waves we can find the correct answer for the motion of the particles in the transverse wave is:

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The correct statement is (a) Only the momentum of the marbles is conserved.

When the marbles are pressed together and released, the spring between them exerts a force that causes them to move apart. As they move away from each other, the internal potential energy stored in the spring is converted into kinetic energy of the marbles. Since no external forces are acting on the system, the total momentum of the marbles is conserved throughout their motion.

However, the mechanical energy of the marbles is not conserved. The initial potential energy stored in the compressed spring is transformed into the kinetic energy of the marbles as they move apart. Therefore, the mechanical energy of the system (spring and marbles) changes as they separate.

So, only the momentum of the marbles is conserved in this scenario.

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Answer:

these organs make up four fifth's of it's body, and gives the electric eel ablity to generate two types of electric organ discharges:low voltage and high voltage

Answer:

15000000 m

Explanation:

From the question,

Speed (S) = Distance(d)/Time(t)

S = d/t....................... Equation 1

Make d the subject of the equation

d = St..................... Equation 2

Given: S = 50 km/s = 50000 m/s, t = 5 minutes = 5*60 seconds = 300 seconds

Substitute these values into equation 2

d = 50000(300)

d = 15000000 m

Hence the skier travels 15000000 m

The increase in efficiency for each degree Fahrenheit rise in temperature is approximately 0.0167, or 1.67%.

To find the increase in the efficiency for each degree Fahrenheit rise in temperature, we first need to convert the temperature change from Celsius to Fahrenheit. We can use the formula:

°F = (9/5) * °C + 32

where °F is the temperature in Fahrenheit and °C is the temperature in Celsius.

Next, we need to calculate the increase in efficiency for a 1-degree Celsius rise in temperature. Let's call this increase "x". We know from the problem statement that the efficiency increases by 3 percent for each degree Celsius rise in temperature, so we can write:

x = 3%

x = 0.03

Now, to find the increase in efficiency for a 1-degree Fahrenheit rise in temperature, we can use the chain rule of differentiation to convert the rate of change in Celsius to the rate of change in Fahrenheit. The chain rule states that:

(dy/dx)_a = (dy/dt)_a / (dx/dt)_a

where (dy/dx)_a is the rate of change of y with respect to x at a particular point a, (dy/dt)_a is the rate of change of y with respect to t at point a, and (dx/dt)_a is the rate of change of x with respect to t at point a.

In this case, we want to find the rate of change of efficiency (y) with respect to temperature in Fahrenheit (x). We know the rate of change of efficiency with respect to temperature in Celsius (t), which is x, and we can use the formula for converting Celsius to Fahrenheit to find the rate of change of temperature in Fahrenheit with respect to time, which is:

(dx/dt)_a = (9/5)

So applying the chain rule, we get:

(dy/dx)_a = (dy/dt)_a / (dx/dt)_a

= 0.03 / (9/5)

= 0.0167

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Answer: The time, t, is approximately 1.57 seconds

Explanation:

The data we have from the question;

Displacement = 2.0 meters

Acceleration due to gravity on the moon = 1.62

Initial velocity = 0 m/s

We can use the second equation of motion for this one;

S = ut + 1/2at²

Where:

- S is the displacement.

- u is the initial velocity.

- a is the acceleration.

- t is the time measured in seconds.

We are now ready to substitute;

2 = 0(t) + 1/2(1.62)t²

==> 2 = 0 + 0.81t²

==> 2/0.81 = 0.81t²/0.81

==> \(\sqrt{2.47}\) = \(\sqrt{t ^{2}\)

==> The time, t, is approximately 1.57 seconds

Hope this helped! Have a good day :D

The layers that make up the upper mantle are the following.

We conclude that the lithosphere and the asthenosphere are the layers that make up the upper mantle. The new lithosphere is being created at oceanic ridges due to plate tectonics. Yes, planet Earth is getting larger constantly.

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Answer: The layers that make up the upper mantle are the following.

The lithosphere and the asthenosphere.

The lithosphere and the asthenosphere are the layers that make up the upper mantle.

The rocky outer part of the Earth is called the lithosphere.

It is very rigid, solid, and it is not as hot as the other parts.

According to scientists, its thickness is about 90 to 100 kilometers from the surface of the earth.

The layer of the Earth that moves the lithospheric plates is called the asthenosphere.

Lithospheric plates are 60 miles long on average and are composed of continental crust.

Explanation: edge 2020

Depolarization refers to the change in electrical potential across a cell membrane, specifically reducing the negative charge inside the cell.

                   Depolarization is a change in the electrical potential across a cell membrane, such as a neuron or muscle cell. It involves a reduction in the negative charge inside the cell, leading to less negative or even positive membrane potential.

                   This change is primarily caused by the influx of positive ions, particularly sodium ions, through voltage-gated ion channels in response to a stimulus. Depolarization is crucial for generating and transmitting action potentials, the electrical signals neurons use to communicate.

                  When depolarization reaches a threshold, it triggers an action potential, allowing the electrical signal to propagate along the cell.

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Given:

The given value is \((1.0004)^{\frac{1}{2}}\).

To find:

The value of the given expression by using the Binomial approximation.

Explanation:

We have,

\((1.0004)^{\frac{1}{2}}\)

It can be written as:

\((1.0004)^{\frac{1}{2}}=(1+0.0004)^{\frac{1}{2}}\)

\((1.0004)^{\frac{1}{2}}=1+\dfrac{1}{2}\times 0.0004\)      \([\because (1+x)^n=1+nx]\)

\((1.0004)^{\frac{1}{2}}=1+0.0002\)

\((1.0004)^{\frac{1}{2}}=1.0002\)

Therefore, the approximate value of the given expression is 1.0002.

Answer:

d) All the above

Explanation:

Therefore, as all of the physical quantities have the same SI units, the answer is d) all of the above.

The value 159,000 J equals the total mechanical energy of the coaster car at this point. The 3rd option is the correct option.

In the physics mechanical energy (M.E) at a point in space =P.E (potential energy)+k.E(kinetic energy). Mechanical energy of a body is a constant in a scenario, all the changes that are observed is either in P.E or K.E, if one increase with x J the other will decrease with x J ,thus their sum or mechanical energy remain constant.

Given in the problem P.E is 27,000 J and K.E is 132,000 J on adding we found that their sum is 159,000 J, so the sum of these energies represent the Mechanical energy of the rollar coaster.

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The amount of metal in a closed cylindrical can that is 10 cm high and 4 cm in diameter if the metal on the top and the bottom is 0.1 cm thick and the metal on the sides is 0.05 cm thick is 8.8 cm.

The formula for calculating the volume of a cylinder is given below.

V = πr^2 h

Get the differential of the volume as shown:

dV = V/ h dh + V / r dr

V/ h = πr^2

V/ h  = 2  πr h

Now, the differential becomes

dV =  πr^2dh +  2πrh dr

Given the following parameters

dh = 0.1 + 0.1 = 0.2 cm

dr = 0.05 cm

h = 10 cm

r = 4 cm

Substituting the values in the above equation, we get

dV = 3.14(2)^2(0.2)  + 2(3.14)(2)(10)(0.05)

dV = 2.512 + 6.28

dV = 8.792 cm

dV = 8.8 cm

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If h equals 50 km/sec/mpc, then a galaxy with a radial velocity of 50,000 km/sec will have a distance of about 1 mpc is false.

The formula used to calculate the distance to a galaxy based on its radial velocity is given by Hubble's Law: v = H0 × d

where v is the radial velocity of the galaxy, H0 is the Hubble constant, and d is the distance to the galaxy.

In this case, the radial velocity is given as 50,000 km/sec, and if we assume the value of the Hubble constant (H0) to be 50 km/sec/Mpc, we can rearrange the equation to solve for the distance:

d = v / H0 = 50,000 km/sec / 50 km/sec/Mpc = 1,000 Mpc

Therefore, a galaxy with a radial velocity of 50,000 km/sec would have a distance of 1,000 Mpc, not 1 Mpc. Hence, the statement is False.

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For waves moving at a constant wave speed, the particles in the medium do not accelerate. This is because the particles oscillate around their equilibrium positions, transferring energy through the medium without causing any net acceleration. The constant wave speed ensures that the energy transfer is uniform and the particles continue their oscillations without any changes in their overall motion.so, this statement is true

When waves move at a constant speed, the particles in the medium do not accelerate. This is because the energy of the wave is simply transferred from one particle to the next, causing them to oscillate back and forth around their equilibrium position. However, it's important to note that the amplitude of the wave may change as it propagates through the medium, which could cause the particles to move more or less than they were before. But overall, the speed of the wave remains constant, and the particles in the medium do not experience any net acceleration.
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When evaluating the CTS you need to consider the total resistance of 1.020 ohms. Here option A is the correct answer.

The total resistance to consider when evaluating the CTs is given by the sum of the resistance of the CT, the wires, and the relay.

The resistance of the wires can be calculated using the formula R = r * L, where r is the resistance per unit length (0.001 ohms/ft) and L is the total length of the wires (100 ft * 2 = 200 ft).

Plugging in the values, we get:

Rwires = 0.001 ohms/ft * 200 ft = 0.200 ohms

The total resistance to consider is then:

Rtotal = RCT + Rwires + Rrelay

Rtotal = 0.800 ohms + 0.200 ohms + 0.020 ohms

Rtotal = 1.020 ohms

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The claim can be Cosmetics, hygiene, and cleaning product emissions may be dangerous.

Evidence 1: Effect of Air Quality

Volatile organic compounds (VOCs), including formaldehyde, benzene, and toluene, can be found in a variety of cosmetic, hygiene, and cleaning goods. These VOCs have the potential to evaportate and cause indoor air pollution.

Environmental impact is evidence number two

Cosmetics, hygiene, and cleaning goods can have a detrimental environmental impact during manufacturing, usage, and disposal. Microplastics and certain chemicals are among the substances present in these items that may find their way into rivers and endanger aquatic life.

Evidence 3: Worker health effects

Occupational health risks can be present for workers who manufacture and produce hygiene, cleaning, and cosmetic items.

Reasoning: It is clear from the research that emissions from cosmetic, hygiene, and cleaning goods have the potential to be harmful.

Thus, this way, harmful are the emissions from cosmetics, hygiene, and cleaning products.

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Answer:the specific heat is the measure of how much heat per unfit mass required to raise the temperature by 1 degrees Celsius.the formula is given as Q= cm T where

Q= the amount of heat added

C= specific heat of a substance

T= change in temperature in degrees Celsius

Q=(4186 j/kg degrees Celsius (.109 kg) (8.93- degrees Celsius)=4974.53J

Explanation:

The mass of the copper coin placed in 101g of water is 135.3g.

The mass of the copper coin can be calculated using the following expression:

Since; Q = mc∆T

Where;

mc∆T (water) = mc∆T (copper)

According to this question;

COPPER METAL:

WATER:

101 × 4.18 × 8.39 = (0.385 × m × 68)

3542.09 = 26.18m

m = 3542.09 ÷ 26.18

m = 135.3g

Therefore, the mass of the copper coin placed in 101g of water is 135.3g.

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The graph that corresponds to 0.1 s in one complete cycle is graph D.

option D is the correct answer.

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.

From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;

Period = 1 s / 10

Period = 0.1 s

From the graphs, the only option that has one complete cycle in one second is option D.

Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.

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The velocity is  17.5 m/s.

Momentum is a measure of an object's motion and is defined as the product of its mass and velocity. It is a vector quantity, meaning it has both magnitude and direction.

Momentum of the snowmobile = 222 kg * 24.21 m/s.

= 5374.62 Kgm/s

Velocity of the other snowmobile = 5374.62 Kgm/s/306.3 kg

= 17.5 m/s

Thus we observe that the momentum can be used to obtain the velocity of the object we have here. In physics, momentum is a vector quantity, meaning it has both magnitude and direction.

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The momentum of the system before the collision 255 g⋅m/s.

In this case, the mass of the first cart is 250 grams, the velocity of the first cart is 0.42 m/s, the mass of the second cart is 500 grams, and the velocity of the second cart is 0.30 m/s.

The momentum of the first cart is:

momentum = 250 g × 0.42 m/s = 105 g⋅m/s

The momentum of the second cart is:

total momentum = 105 g⋅m/s + 150 g⋅m/s = 255 g⋅m/s

Therefore, the total momentum of the system before the collision is 255 g⋅m/s.

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Answer: I think D. Mass!

Explanation: I hope this helps and I hope everyone has a good day/Friday&weekend^^

The distance a waves covers in a certain length of time is known as its wave speed. The following equation relates wave speed to both wave frequency and wavelength: Wavelength x Frequency equals speed.

The vertical density and tension v=FT can be used to determine the wave's speed. According to the formula v = FT, the stress would have to be raised by a ratio of 20 if the utilized was to grow by a number of the almost 20.

Tension is the force that is sent through a cable, string, or wire whenever two opposing forces pull on it. Along the full length of the wire, the tensile stress pulls energy equally only on the bodies at the ends.

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The work done in stretching the spring from its natural length to 10 inches beyond its natural length is 112 lb·in.

The work done in stretching a spring is given by the formula:

\(\[ W = \frac{1}{2} k (x_f^2 - x_i^2) \]\)

In this case, the spring is stretched 4 inches beyond its natural length, so the initial displacement is 4 inches. The force required to hold the spring at this displacement is 16 lb. We can use Hooke's Law to find the spring constant:

\(\[ k = \frac{F}{x_i} = \frac{16 \, \text{lb}}{4 \, \text{in}} = 4 \, \text{lb/in} \]\)

Now, we can calculate the work done in stretching the spring to 10 inches beyond its natural length:

\(\[ W = \frac{1}{2} (4 \, \text{lb/in}) \left( (10 \, \text{in})^2 - (4 \, \text{in})^2 \right) = 112 \, \text{lb·in} \]\)

Therefore, the work done in stretching the spring is 112 lb·in.

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All living organisms are mainly composed of the elements: Oxygen, Carbon, Hydrogen, Nitrogen, Phosphorus.

The correct answer choice is option c.

Living organisms are those things that has life. They include plants and animals. Living organisms be it plants or animals are composed of important elements such as carbon, oxygen and others.

However, there are certain characteristic features which living organisms possess. Some of these characteristics of living things are as follows:

Other characteristics of living organisms are:

In conclusion, we can now confirm from above the explanation given above that living things are made up of certain elements.

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Answer:

electric cars

Explanation:

although electric cars are more expensive, you will save money on rhe gass bill because you won't need to pay for gas. they also make less harmful toxins for the earth

The correct answer of terrestial weather:

The solar insolation in the visible and infrared regions of the solar electromagnetic spectrum is much more than the energy that space weather occurrences release into the troposphere and stratosphere. Despite claims to the contrary, there may be some connection between the Earth's climate and the 11-year sunspot cycle. There is no proof of this. For instance, it has frequently been suggested that the Maunder minimum, a 70-year period almost devoid of sunspots, is correlated to a cooler climate, but these correlations have vanished after further research. Changes in cosmic ray flux are hypothesized to affect how much cloud formation occurs.

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The percentage of weight that should be in front of the trailer is 60%

According to the GMC Trailering Guide, to get the right trailer tongue weight, you should concentrate about 60% of the load evenly on the front half of the trailer. 60% of the trailer load should be in front of the axle and 40% behind it. This ensures the correct weight of the tongs and prevents the trailer from rocking. Weight distribution should be as efficient as possible by placing 60% of the weight in the front of the trailer and 40% in the rear. There are some additional safety precautions to consider. 

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Our galaxy's spiral arms include many high-mass O and B stars, which are scarce elsewhere.

The Scutum-Centaurus arm and the Carina-Sagittarius arm of two spiral arms have tangent points inside the Sun's orbit around the Milky Way's centre. By counting the stars close to the tangent point, it would be possible to determine whether these arms have more stars than the Galactic disc on average density. The remaining arms have too much gas but not too many ancient stars. [201] In December 2013, scientists discovered that the Milky Way's four-arm spiral shape is accurately described by the distribution of young stars and star-forming regions. As a result, the Milky Way seems to have four spiral arms when gas and young stars are present and two spiral arms when ancient stars are present. Uncertainty surrounds the cause of this apparent mismatch.

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Based on the observation that the hairs on Xander's arms are lying flat against his skin, it is likely that his internal body temperature is around 37°C or 98.6°F.

This response of the body, known as piloerection or goosebumps, occurs when the body is trying to dissipate heat. Piloerection is a physiological response in which tiny muscles, called arrector pili muscles, contract, causing the hairs on the skin to stand up. In animals, this response helps in trapping air and creating a layer of insulation. In humans, however, the effect is not as significant due to reduced hair coverage. Nevertheless, the hairs lying flat against the skin create a larger surface area, which aids in heat dissipation. When the body temperature rises above the normal range, the body initiates mechanisms to release excess heat. One such mechanism is vasodilation, in which the blood vessels near the skin's surface dilate, allowing more blood to flow and release heat through radiation. Additionally, sweating occurs to help cool the body through evaporation. In contrast, when the body temperature drops below normal, vasoconstriction occurs, reducing blood flow to the skin's surface and conserving heat.

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