What is suspension?​

Answer:

2.05×10⁶ N

Explanation:

Force = pressure × area

F = (1.52×10⁴ Pa) (135 m²)

F = 2.05×10⁶ N

The total force the bottom of the tank needs to support is calculated using the formula for pressure which is Pressure = Force / Area. By rearranging this formula to get Force = Pressure x Area, and substituting the given values, we find that the total force is 2.052 x 106 Newtons.

The subject of this question is from the field of Physics and it revolves around concepts of fluid pressure and force. The student is asked to calculate the total force exerted on the bottom of a water tank due to the pressure of the water above it. In physics, we know that pressure is defined as the force applied perpendicular to the surface of an object, per unit area. Mathematically this can be represented as Pressure = Force / Area. If we rearrange this equation to find Force, it transforms into Force = Pressure x Area.

Given in the question, the Pressure (P) is 1.52 x 10⁴ Pa and Area (A) is 135 m². Substituting these values into the equation gives us : Force = 1.52 x 104 Pa x 135 m² = 2.052 x 10⁶ N. Therefore, the bottom of the tank must support a force of 2.052 x 10⁶ Newtons.

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Answer: 13 Hz

Explanation:

The frequency [tex]f[/tex]  of a wave is expressed as:  

[tex]f=\frac{1}{T}[/tex]  

Where [tex]T[/tex] is the period of the wave

If we are told the period is 0.077 s, then its frequency is:

[tex]f=\frac{1}{0.077 s}[/tex]  

[tex]f=12.98 Hz \approx 13 Hz[/tex]  

For this case we must do a conversion from pounds to grams. By definition we have to:

1 pound equals 453,592 grams.

So:

[tex]3010 lb * \frac {453.592} {1} \frac {g} {lb} = 1,365,311.92\ grams[/tex]

If we divide we get the number of portions:

[tex]\frac {1,365,311.92} {28} = 48,761.14[/tex]

Thus, we have approximately 48,761 servings of sugar candy.

ANswer:

48,761 servings of sugar candy.

Final answer:

To find the number of servings, the weight of the biggest piece of fudge created (3010 lbs) was converted to grams, yielding 1,365,312.92 grams. Dividing this by the recommended serving size of 28 grams gives a total of 48,761.89 servings.

Explanation:

To calculate the number of servings in the biggest piece of fudge ever created that weighed 3010 lbs, we first need to convert the weight from pounds to grams, because the recommended serving size of fudge is given in grams (28g).

1 pound is equivalent to 453.592 grams. Therefore, we need to multiply the total weight in pounds by this conversion factor:

3010 lbs × 453.592g/lbs = 1,365,312.92 grams

Now that we have the weight of the fudge in grams, we can divide it by the recommended serving size:

1,365,312.92 grams ÷ 28 grams/serving = 48,761.89 servings

Therefore, the biggest piece of fudge ever created had 48,761.89 servings.

fMRI technology allows researchers to analyze brain activity by tracking blood flow changes related to neural activity. It can identify selected sentences that a person reads in a scanner, but it cannot predict Alzheimer's, diagnose most mental illnesses, or read private thoughts at a distance.

Current functional magnetic resonance imaging (fMRI) technology enables researchers to observe and analyze changes in the brain's activity over time by tracking blood flow and oxygen levels. fMRI is utilized for a variety of medical and psychological assessments. It is highly effective at mapping brain function and determining the functioning of various regions involved in thought and motor control. Specifically, fMRI can measure changes in blood flow associated with neural activity and can thereby generate a detailed map showing the most active parts of the brain during a given task.

Answering the student's multiple-choice question, among the provided options, fMRI technology can c. Identify selected sentences that a person reads in a scanner. The ability to predict the development of Alzheimer's, diagnose most forms of mental illness, or read a person's private thoughts at a distance is not explicitly achievable with the current fMRI technology.

Answer:

This atom doesn’t satisfy octet rule

Explanation:

To satisfy octet rule the outermost shell should have 8 electrons. This is called octet electronic configuration which makes the atom stable. When participating in chemical reactions atoms tend to lose or gain electrons or share electrons like in a covalent bond all to achieve the octet configuration.

In this atom there are three shells and 11 electrons in total. Maximum number of electrons that can be present in the first shell is two and in this atom the first shell contains that maximum electrons. The second can contain maximum 8 electrons. In this atom the second shell is fully filled with 8 electrons.

For octet rule to be satisfied the outermost shell or the valence shell should contain 8 electrons. But in this atom the outermost shell has 1 electron. This means that the atom doesn’t satisfy octet rule. In order to obtain the octet configuration it should lose 1 electron.

Answer:

Answer

Explanation:

Sample Response: No, it does not, because the octet rule says that an atom needs to have eight electrons in its valence shell to be stable. The exceptions are hydrogen and helium, which need only two electrons. This atom has only one electron.

Answer:

[tex]2.1875 ms^{-2}[/tex]

Explanation:

Newton's second law: [tex]F=ma[/tex] Let's substitute and solve for whatever is left behind:[tex]7.0N= 3.2kg *a[tex]a =\frac {7.0}{3.2} \frac{N}{kg} = 2.1875 \frac{kg\frac{m}{s^2}}{kg}=2.1875 \frac{m}{s^2}[/tex]

The value of acceleration of the airplane is [tex]2.19 \;\rm m/s^{2}[/tex].

Given data:

The mass of propeller model is, m = 3.2 kg.

The net force on the propeller model is,  F = 7.0 N.

Apply the Newton's second law, which says that the applied force on an object is equal to the product of mass of object and acceleration of object, caused due to applied force.

Then the expression is,

[tex]F = m \times a[/tex]

here, a is acceleration.

Solving as,

[tex]7 = 3.2 \times a\\a=2.19 \;\rm m/s^{2}[/tex]

Thus, the required value of acceleration of the propeller model is [tex]2.19 \;\rm m/s^{2}[/tex].

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Answer:

12

Explanation:

x = 5 (t − 2) + 6 (t − 2)²

x = 5t − 10 + 6 (t² − 4t + 4)

x = 5t − 10 + 6t² − 24t + 24

x = 6t² − 19t + 14

Velocity is the derivative of position with respect to time:

v = dx/dt

v = 12t − 19

Acceleration is the derivative of velocity with respect to time:

a = dv/dt

a = 12

The particle's acceleration is constant at 12 (use appropriate units).

Answer:

3. 3.5 s

Explanation:

The position of traveller A is given by the equation:

[tex]x_A(t) = \frac{1}{2}a t^2[/tex]

where

[tex]a = 6 m/s^2[/tex] is the acceleration of A

t is the time measured from when A started the motion

The position of traveller B instead is given by

[tex]x_B(t) = u_B (t-2) + \frac{1}{2}a(t-2)^2[/tex]

where a (acceleration) is the same as traveller A, and

[tex]u_B = 20 m/s[/tex]

is B's initial velocity. We can verify that the formula is correct by substituting t=2, and we get [tex]x_B=0[/tex], which means that B starts its motion 2 seconds later.

Traveller B overtakes traveller A when the two positions are the same, so:

[tex]x_A = x_B\\\frac{1}{2}at^2 = u_B (t-2) + \frac{1}{2}a(t-2)^2\\\frac{1}{2}at^2 = u_B t - 2u_B +\frac{1}{2}at^2 +2a-2at\\u_Bt-2at = 2u_B-2a\\t=\frac{2u_B-2a}{u_B-2a}=\frac{2(20)-2(6)}{20-2(6)}=3.5 s[/tex]

Answer:

C. 1.4 m/s

Explanation:

Energy is conserved:

Initial energy = final energy

At P, the pendulum has only gravitational potential energy.

At Q, the pendulum has only kinetic energy.

PE = KE

mgh = ½mv²

v = √(2gh)

Given h = 0.1 m:

v = √(2 × 9.8 m/s² × 0.1 m)

v = 1.4 m/s

Answer:

1.4

Explanation:

Answer: 9.9 seconds

Explanation:

that's just how long it takes

To hit the ground it takes approximately 3.19 seconds for the rock to hit the ground when dropped from a 55-meter cliff.

To calculate the time it takes for the rock to hit the ground when dropped from a certain height, we can use the kinematic equation for free fall:

ℎ = 1/2 gt2

Where:

h is the height of the cliff (55 m in this case).

g is the acceleration due to gravity ( 9.8 m/s2 approximately on the surface of the Earth).

t is the time we're trying to find.

Rearranging the equation to solve for t:

t =[tex]\sqrt{ 2h / g}[/tex]

​Plugging in the values:

t =[tex]\sqrt{ 2(55)m / 9.8m/s²}[/tex]

Calculating this:

t≈3.19s

So, it takes approximately 3.19 seconds for the rock to hit the ground when dropped from a 55-meter cliff.

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Answer:

-9.8 m/s²

0 m/s

Explanation:

Average acceleration is the change in velocity over change in time.

a = Δv / Δt

a = (-9.8 m/s − 9.8 m/s) / 2.0 s

a = -9.8 m/s²

Average velocity is the change in position over change in time.

v = Δx / Δt

v = (0 m − 0 m) / 2.0 s

v = 0 m/s

In terms of Physics, the ball's average acceleration is 0 m/s² and the average velocity is also 0 m/s due to the ball returning to its initial position, making the total displacement 0.

The subject of this question is Physics and it would be typically asked at the High School level.

(a) The ball’s average acceleration during the entire journey can be determined by the equation for motion which is: a = Δv/Δt. Here, Δv (the change in velocity) is 0 as the ball starts and ends at the same speed (it just changes direction, which is not considered in average acceleration), and Δt is the time it takes for the journey, which is 2.0 seconds. Therefore, a=0/2.0 = 0 m/s².

(b) The average velocity of an object is the total displacement (total distance travelled in a specific direction) divided by the amount of time taken to travel this distance. In this case, the ball returns to the starting point, making the total displacement 0. Therefore, the average velocity is 0/2.0 = 0 m/s.

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Answer:

the liquid acid

Explanation:

This because electrolytes are supposed to be in a liquid form.

Answer:

Liquid Acid

Explanation:

The wet cell battery implies that it has an liquid inside.

The Copper and the Zinc are also the  compounts that will react in the battery as the semi-reactions implies:

Cu2+(aq) + 2e- --> Cu0

Zn2+(aq) + 2e- --> Zn0

The electrolyte is a substance present in the battery that will help the electricity to flow to the ion of interest and will not participate in the reaction, the acid should work as the electrolyte in this case.

Answer:

The refraction of light at the surface of water makes ponds and swimming pools appear shallower than they really are.

Explanation:

so its just the refraction of light at the surface

Answer:

The refraction of light at the surface of water makes ponds and swimming pools appear shallower than they really are. If you look at a stick that is poking into some water at an angle the stick looks bent because of refraction. The bottom of the stick seems to be nearer the surface of the water than it really is.

Explanation:

It will take 0.75 s for a charge of 15 C to flow through the wire.

The quantity of electricity flowing through a wire is related to current and time according to the following equation:

Where

Q is the quantity of electricity

I is the current

t is the time

With the above formula, we can calculate the time taken for the 15 C to flow through the wire. This can be obtained as follow:

Quantity of electricity (Q) = 15 C

Current (I) = 20 A

Q = It

15 = 20 × t

Divide both side by 20

[tex]t = \frac{15}{20}\\\\[/tex]

Therefore, it will take 0.75 s for a charge of 15 C to flow through the wire.  

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Answer:

the mirror is 12 cm away from the image

Explanation:

Answer:

distance of image = 12 cm

Explanation:

For plane mirror the perpendicular distance of object from the mirror must be same as that of perpendicular distance of image from the mirror

As we know here that object is 3 cm high

But the distance of object from mirror is 12 cm

So here the image will be virtual and it will form at 12 cm distance behind the mirror.

So here image will form behind the mirror at same distance that is the distance of object from the mirror.

Friction converts kinetic energy into heat energy as surfaces in contact oppose each other's motion, resulting in an increase in the system's thermal energy. The correct answer is: heat.

Friction changes the energy of an object from kinetic energy to heat energy. When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into heat. This conversion occurs because the force of friction acts against the motion, causing the surfaces to heat up due to the energy transfer.

Kinetic energy is the energy which a body possesses by virtue of being in motion. However, when there is kinetic friction, the irregularities on the two sliding surfaces interact to convert some of the mechanical energy into thermal energy, which is the energy stored in the motion of atoms and molecules that make up a material. The heat energy can raise the thermal energy of the system, resulting in an increase in temperature of the objects involved.

Answer:

290

Explanation:

Average acceleration is the change in velocity over change in time.

First, find the velocity by taking the derivative of position.

v(t) = dx/dt

v(t) = 38t + 21t²

At t = 3 and t = 9:

v(3) = 303

v(9) = 2043

So the average acceleration is:

a = Δv / Δt

a = (2043 − 303) / (9 − 3)

a = 290

Use appropriate units.

Answer:

The amount of water entering the earth through precipitation is equal to the amount of water leaving earth through transpiration.

Explanation:

Rates of precipitation and evaporation vary widely according to regions and seasons. But in a global scale the rates are equal. Thus the total amount of earth’s water maintains its constancy even though there is a continuous change in forms of water.

Evaporation and transpiration are the forms in which Water leaves the earth and it returns to the earth in various forms of precipitation like rain, snow, dew, fog etc. This water then reaches ocean and land. The water that reaches the land flows as surface run off into rivers and water bodies or seep into the ground replenishing the ground water table.

The water cycle is a balanced system that allows water to circulate between the earth's oceans, atmosphere, and land. Water leaves the earth through evaporation/sublimation, reenters the atmosphere, condenses, and falls back to the earth through precipitation. The amount of water returning to the earth matches the amount leaving it, maintaining equilibrium.

The water cycle, also known as the hydrological cycle, is a continuous process by which water circulates between the earth's oceans, atmosphere, and land. This cycle involves several key stages such as evaporation/sublimation, condensation/precipitation, and surface runoff/snowmelt.

Firstly, water from the land and oceans enters the atmosphere through evaporation or sublimation, where it condenses into clouds. This condensation ultimately falls back to the earth's surface as precipitation, such as rain or snow. Therefore, the amount of water returning to the earth through precipitation equals the amount of water leaving the earth through evaporation.

Once the water hits the earth, some of it may infiltrate into the soil or enter freshwater bodies. In most natural terrestrial environments, rain encounters vegetation before it reaches the soil surface. Some of this water evaporates immediately from the surfaces of plants in a process known as evapotranspiration.

After precipitation, water may travel over the surface as runoff into various bodies of water, eventually reentering the ocean, thus completing the cycle. In conclusion, the water cycle is a balanced system with the water leaving and coming back to the earth in similar quantities.

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Measuring spoons are used when measuring less than 1/4 cup

We can see here that measuring spoons are used when measuring less than 1/4.

Measuring spoons are used when measuring less than one tablespoon or teaspoon of an ingredient. These spoons are designed to provide accurate measurements for small quantities of dry or liquid ingredients used in cooking and baking. Measuring spoons typically come in sets, with the most common sizes being 1 tablespoon (tbsp), 1 teaspoon (tsp), 1/2 teaspoon, 1/4 teaspoon, and sometimes 1/8 teaspoon.

When recipes call for precise measurements of ingredients, especially in baking, measuring spoons are essential to ensure the right balance of flavors and the desired outcome of the dish. They are particularly useful when dealing with potent or costly ingredients, as small variations in quantities can significantly impact the final result.

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Answer: saturn

Explanation:

Answer: The amount of air gradient.

Explanation:

Answer:

Pretty sure the answer is air gradient

Explanation:

Answer:

The correct answer is plastic.

Explanation:

To keep sandwiches cold as long as possible by putting them in a cooler the best material is plastic. The plastic is a thermal insulator used for different uses. One of them is to maintain the temperature in closed containers. Metal and aluminum allow the temperature to flow more easily and glass is not a suitable material for building the cooler.

Have a nice day!

Answer: 90 m/s

Explanation:

For this situation we will use the following equations:

[tex]y=V_{o}t+\frac{1}{2}at^{2}[/tex] (1)  

[tex]V=V_{o} + at[/tex] (2)  

Where:  

[tex]y=200 m[/tex] is the height of the model rocket at 4 s

[tex]V_{o}=10 m/s[/tex] is the initial velocity of the model rocket

[tex]V[/tex] is the velocity of the rocket at 4 s

[tex]t=4 s[/tex] is the time it takes to the model rocket to reach 200 m

[tex]a[/tex] is the constant acceleration due gravity and the rocket's thrust

Firstly, from equation (1) we have to find [tex]a[/tex]:

[tex]200 m=(10 m/s)(4 s)+\frac{1}{2}a(4 s)^{2}[/tex] (3)  

[tex]a=20 m/s^{2}[/tex] (4)  

Now we have to substitute this value of [tex]a[/tex] in (2):

[tex]V=10 m/s + (20 m/s^{2})(4 s)[/tex] (5)  

Finally:

[tex]V=90 m/s[/tex] This is the rocket's final velocity

Answer:

D: m² (square meters, area)

Explanation:

Derived units are a combination of SI base units.  m² is the only option that's a combination of base units (meters times meters).

Answer:

C. It must be less than 60 J

Explanation:

The work going into the machine is the product of the force and distance:

W = Fd

W = (30 N) (2 m)

W = 60 J

The work out of the machine is less than this due to the frictional losses.

Answer:

C. It must be less than 60 J

Answer:

Average velocity of the particle is[tex]-2.4 m/s[/tex]

Explanation:

Average velocity is defined as the total velocity divided by the total time. It is given  by the equation[tex]v_av= \frac{displacement}{(total time taken)}[/tex]

In the given problem the particle starts from origin, travels [tex]12.8 m[/tex] and then reverses direction and travels till [tex]-9.23 m[/tex] within a total time of [tex]3.8 seconds.[/tex]

Displacement is defines as the shortest distance between initial and final point.  

Here displacement = [tex]- 9.23 m[/tex]

total time=[tex]3.8 s[/tex]

[tex]v_av=-9.23/3.8=-2.4 m/s[/tex]

Answer:

B) grams

The SI unit for mass is grams.

Answer:

The answer is grams

Explanation:

Answer:

2780 meters

Explanation:

First, convert km/hr to m/s.

87.1 km/hr × (1000 m / km) × (1 hr / 3600 s) = 24.2 m/s

160.0 km/hr × (1000 m / km) × (1 hr / 3600 s) = 44.4 m/s

Given:

v₀ = 24.2 m/s

v = 44.4 m/s

a = 0.250 m/s²

Find: x

v² = v₀² + 2a (x − x₀)

(44.4 m/s)² = (24.2 m/s)² + 2(0.250 m/s²) (x − 0 m)

x = 2780 m