The geocentric theory states that the center of the universe is

Yes the formula of resistivity is:

[tex]R=\dfrac{\rho l}{A}[/tex]

Where [tex]\rho[/tex] is relativistic resistance with units [tex]\dfrac{\Omega}{m}[/tex], each metal has different relativistic resistance you must find the relativistic resistance of your material using the table of relativistic resistances.

[tex]l[/tex] stands for the length of a wire.

[tex]A[/tex] stands for the area of the wire. Usually it is equal to [tex]\pi r^2[/tex] because.

So now we have data [tex]A=1cm^2[/tex] but nothing else was specified so we are unable to calculate anything.

Hope this helps.

r3t40

Answer:

Your answer is going to be 1 cm.

Explanation:

Answer:

The maximum speed that the truck can have and still be stopped by the 100m road is the speed that it can go and be stopped at exactly 100m. Since there is no friction, this problem is similar to a projectile problem. You can think of the problem as being a ball tossed into the air except here you know the highest point and you are looking for the initial velocity needed to reach that point. Also, in this problem, because there is an incline, the value of the acceleration due to gravity is not simply g; it is the component of gravity acting parallel to the incline. Since we are working parallel to the plane, also keep in mind that the highest point is given in the problem as 100m. Solving for the initial velocity needed to have the truck stop after 100m, you should find that the maximum velocity the truck can have and be stopped by the road is 18.5 m/s.

Explanation:

Using principles from physics, specifically the energy conservation principle and trigonometry, you can determine that the maximum speed a truck could be going and still be stopped by the emergency exit—even with negligible friction—is roughly 18.56m/s or 66.81km/h.

In physics, when a vehicle goes up a slope, two main forces tend to stop the vehicle: gravity and friction. In this problem, we are asked to ignore friction, so that only gravity will slow down the vehicle. Given that that the velocity of the truck at the end of the emergency exit has to be zero, we should use the energy conservation principle because work done by gravity equals the initial kinetic energy of the truck. Since work done by gravitational force equals mass (m) * gravitational acceleration (g) * height (h), and initial kinetic energy equals 0.5 * mass (m) * velocity^2 (v^2), we have m * g * h = 0.5 * m * v^2 (with v being the maximum velocity). Then, we can calculate the height using trigonometry because we know the angle and the length of the slope. So, h = 100m * sin(10) = 17.36m. Plug h into the equation above and solve for v gives  v = sqrt(2 * g * h). With g = 9.8m/s^2,  v = sqrt(2 * 9.8m/s^2 * 17.36m) = 18.56m/s or 66.81km/h.

https://brainly.com/question/32490774

#SPJ2

Answer:

2 m/s and -2 m/s

Explanation:

The object travels with an angle of

60.0°

with the positive direction of the y-axis: this means that it lies either in the 1st quadrant (positive x) or in the 2nd quadrant (negative x).

If it lies in the 1st quadrant, the value of vx (component of v along x direction) is:

[tex]v_x = v cos \theta = (4.0 m/s) cos 60.0^{\circ}=2 m/s[/tex]

If it lies in the 2nd quadrant, the value of vx (component of v along x direction) is:

[tex]v_x = -v cos \theta = -(4.0 m/s) cos 60.0^{\circ}=-2 m/s[/tex]

Projectile motion refers to an object in motion in the air, affected only by gravity. Attributes of such motion include gravity pulling the object down, inertia propelling it forward, and a parabolic trajectory resulting from these forces.

Projectile motion describes the movement of an object thrown or projected into the air and is influenced solely by gravity, which is the only force acting upon it accelerating the object downwards. The aspects that describe this motion include the following: Gravity acts to pull the object down, the object's inertia carries it forward in the direction it was thrown, and the path of the object is indeed curved due to the gravity acting on it. Option A and D

An object in projectile motion does not move in a straight path (therefore, option B is incorrect), and the forward velocity of the object is not 0 m/s as it has initial velocity in the horizontal direction (thus, option C is also incorrect). The combination of the forward motion and the acceleration due to gravity results in a parabolic trajectory, which signifies a two-dimensional motion.

Answer:

B. Slow down to the speed that allows you to have complete control of your vehicle.

Explanation:

Your life is very important, and driving at the same speed as others or even closely behind could endanger your life. Being directly behind someone else, if they stop immediately you will hit them because you can't stop fast enough. If something feels unsafe never continue doing it.

Answer:

B.  slow down to the speed that allows you to h ave complete control of  your vehicle.

Explanation:

You can also reduce the risk of external factors by slowing down and keeping a safe distance from the vehicle in front of you.

Answer:

1.11×10⁶ J

Explanation:

75 mi/hr × (1609.34 m / mi) × (1 hr / 3600 s) = 33.5 m/s

4345 lbf × (1 lbm / lbf) × (1 kg / 2.2 lbm) = 1975 kg

KE = 1/2 mv²

KE = 1/2 (1975 kg) (33.5 m/s)²

KE = 1.11×10⁶ J

The kinetic energy of the automobile weighing 4345lb and with a speed of 75mph is 1.1077 × 10⁶J

Given the data in the question;

[we convert from pound to kilogram]

[ we convert from miles per hour to meter per second]

Kinetic energy; [tex]K.E = ?[/tex]

We know that, Kinetic Energy ( K.E ) is a form of energy that a matter possesses by reason of its motion.

It is directly proportional to the mass of the matter and to the square of its velocity.

That is; [tex]K.E = \frac{1}{2} mv^2[/tex]

To find the Kinetic Energy, we simply substitute our given values into the equation

[tex]K.E = \frac{1}{2}\ * 1970.859kg\ *\ ( 33.528m/s)^2\\\\K.E = 1107747.69 kg.m^2/s^2\\\\K.E = 1.1077 * 10^6 J[/tex]

Therefore, the kinetic energy of the automobile weighing 4345lb and with a speed of 75 mph is 1.1077 × 10⁶J

Learn more; https://brainly.com/question/6883026

Answer:

8,000 miles and for 2 years

Explanation:

from May 14, 1804, to September 23, 1806, from St. Louis, Missouri, to the Pacific Ocean and back Lewis and Clark traveled. They traveled nearly 8,000 miles (13,000 km). There expedition was called Corps of Discovery.

Hope this helps:)

If it does please mark brainliest :D

-A.Hazle

Hello There!

All life on Earth exists in a region called the biosphere.

The biosphere is known as the global sum of all ecosystems. It's called the "zone of life"

Answer:the bioshpere

Explanation:

Final answer:

Using Hooke's Law and the spring constant calculated from the initial scenario, the length of the spring when a 3.0 kg mass is suspended from it will be 17.5 cm.

Explanation:

The question involves calculating how much a spring will stretch under a certain weight, which can be addressed using Hooke's Law and the concept of spring constants in physics. We are given a scenario in which a spring stretches an additional 5 cm (from 10 cm to 15 cm) when a 2.0 kg mass is hung from it. To determine how long the spring will be when a 3.0 kg mass is suspended from it, we first need to calculate the effective spring constant (k) using the initial provided information.

We can use the formula for Hooke's Law: F = k × Δx, where F is the force applied to the spring (which is the weight of the mass), k is the spring constant, and Δx is the change in length of the spring from its equilibrium position. Because the weight force due to gravity is F = m × g (where m is the mass and g is the acceleration due to gravity, 9.8 m/s²), we can find k as follows:

For a 2.0 kg mass, F = 2.0 kg × 9.8 m/s² = 19.6 N. The change in length Δx is 5 cm or 0.05 m. Therefore, k = F / Δx = 19.6 N / 0.05 m = 392 N/m.

Now we can find the new change in length for a 3.0 kg mass. Let Δx' be the new change in length. We have F' = 3.0 kg × 9.8 m/s² = 29.4 N. Since k is constant for the spring: 29.4 N = 392 N/m × Δx'. Solving for Δx' gives Δx' = 29.4 N / 392 N/m = 0.075 m or 7.5 cm. Therefore, the total length of the spring when a 3.0 kg mass is hung will be 10 cm + 7.5 cm = 17.5 cm.

Answer: [tex]K=\°C+273.15[/tex]

Explanation:

The Kelvin ([tex]K[/tex]), is the unit of temperature of the scale created by the British physicist William Thomson (Lord Kelvin) in 1848, taking as a base the Celsius scale, establishing the zero point for this scale in the absolute zero which is in [tex]-273.15\°C[/tex].

This was achieved by observing that when a gas cools, its volume decreases proportionally to its temperature. That is, for each degree of temperature that the gas decreases, its volume also decreases by a certain percentage.

After which, Kelvin made the calculations and it turned out that at a temperature of [tex]-273.15\°C[/tex] the volume of the gas would be zero (theoretically).

It should be noted that the Kelvin is the unit of temperature of the International System of Units and that although the scale starts at absolute zero (theoretical), in which no molecule should move, in reality it is not so, because according to quantum physics, at this temperature the molecules retain a residual movement.

Answer:

r = 0.1217 nm

Explanation:

r^2 = (RT) / ( 4 * pi *P * A* L)

r^2 = 8.314 * 273 / ( 4 * pi * (1.01*10^5) * (6.022*10^23) * (0.2*10^-6))

r = 1.217*10^-10

r = 0.1217 nm

The radius of the helium atom in helium gas can be determined using the mean free path and the concept of cross-sectional area.

The radius of a helium atom can be determined using the mean free path and the concept of cross-sectional area. The mean free path is the average distance a molecule travels between collisions. In this case, the mean free path of a helium atom in helium gas at standard temperature and pressure is given as 0.2 um.

To find the radius of the helium atom, we can relate the cross-sectional area, which is 4r², to the mean free path using the formula (N/V)(4r²)(λ) = 1. Rearranging this formula, we have r = sqrt(1 / (4 * N / V * λ)), where N/V is the molar density of helium gas at standard temperature and pressure.

Since we are given the mean free path as 0.2 um, we can substitute this value into the formula. The molar density of helium gas at standard temperature and pressure is approximately 1.78 x 10^25 atoms/m³. Plugging in these values, we can calculate the radius of the helium atom in nanometers.

Using the formula, r = sqrt( 1 / (4 * 1.78 x 10^25 * 0.2 x 10^-6)), we can simplify and convert to nanometers to get r ≈ 0.109 nm. Therefore, the radius of the helium atom is approximately 0.109 nanometers.

https://brainly.com/question/591766

#SPJ11

Answer: [tex]3.524(10)^{22}N[/tex]

Explanation:

According to Newton's law of Gravitation, the force [tex]F[/tex] exerted between two bodies of masses [tex]m1[/tex] and [tex]m2[/tex]  and separated by a distance [tex]r[/tex]  is equal to the product of their masses and inversely proportional to the square of the distance:

[tex]F=G\frac{(m1)(m2)}{r^2}[/tex]   (1)

Where:

[tex]G[/tex] is the Gravitational Constant and its value is [tex]6.674(10)^{-11}\frac{m^{3}}{kgs^{2}}[/tex]

[tex]m1=1.99(10)^{30}kg[/tex] is the mass of the Sun

[tex]m2=5.972(10)^{24}kg[/tex] is the mass of the Earth

[tex]r=1.50(10)^{11}m[/tex]  is the distance between the Sun and the Earth

Substituting the values in (1):

[tex]F=6.674(10)^{-11}\frac{m^{3}}{kgs^{2}}\frac{(1.99(10)^{30}kg)(5.972(10)^{24}kg)}{(1.50(10)^{11}m)^2}[/tex]   (2)

Finally:

[tex]F=3.524(10)^{22}N[/tex]   This is the gravitational force of the Sun on the Earth.

Final answer:

The resulting force is approximately 3.54  times [tex]10^{22}[/tex] N.

Explanation:

The question pertains to calculating the gravitational force exerted by the Sun on Earth which can be found using Newton's law of universal gravitation. The formula for the gravitational force F between two masses m1 and m2 separated by a distance r is given by F = G * (m1 * m2) / [tex]r^2[/tex], where G is the gravitational constant (6.67430 times [tex]10^{-11}[/tex]N times[tex](m/kg)^2[/tex]).

Given the mass of the Sun (m1) is 1.99 times [tex]10^{30}[/tex]kg, the mass of the Earth (m2) is 5.972 times [tex]10^{24}[/tex] kg (approximately, for ease of calculation), and the average distance (r) between the Earth and Sun is 1.50 times [tex]10^{11}[/tex] m, we can substitute these values into the gravitational force formula to generate accurate answer.

Therefore, the gravitational force of the Sun on the Earth is calculated to be approximately 3.54 times [tex]10^{22}[/tex]N.

Answer:

B. A large cross sectional area,

Explanation:

To permit a large flow of water in a pipe, the cross sectional area of the pipe must be significantly large. According to the flow rate equation:

                    V = [tex]\frac{Q}{A}[/tex]

Where:

           Q is the Volume flow rate and it is the volume of fluid that flows              through the pipe

            V is the velocity of the fluid in the pipe

            A is the cross sectional area of the pipe.

From the equation, we see that for a larger amount of water to flow in a pipe, the cross-sectional area must be very large. In short, Q varies directly as A.

Answer:

a large cross-sectional area

Explanation:

D)

It has played a role throughout the Sun's history, but it was most important right after nuclear fusion began in the Sun's core. What do we mean when we say that the Sun is in gravitational equilibrium? ... There is a balance within the Sun between the outward push of pressure and the inward pull of gravity.

When we say that the sun is in gravitational equilibrium, it simply means that there's a balance within the sun between the outward push of pressure and the inward pull of gravity.

In conclusion, the amount of energy that's released by fusion in the core of the sun will then be equal to the amount of energy that radiated from the surface of the sun into space.

Read related link on:

https://brainly.com/question/8011818

Answer:

Renewable Resources

Explanation:

This is because wind is almost infinite and doesn't pollute.

Answer: Renewable resources

Explanation:

Answer:

  A:  greater than the volume of object B

Explanation:

Based on the dimensions, the volume of object A is ...

  (3 cm)(2 cm)(4 cm) = 24 cm³ = 24 mL

If object B displaces 19 mL of water, we presume that is its volume. Since 24 mL is more than 19 mL, we conclude ...

  The volume of object A is greater than the volume of object B.

_____

Comment on density

We have presumed that object B is completely submerged. If it is not, then the relative volumes will depend on the densities. If the density of object B is less than about (19/24) g/mL, its volume may very well be larger than that of object A.

Answer:

 A:  greater than the volume of object B

Explanation:

Based on the dimensions, the volume of object A is ...

 (3 cm)(2 cm)(4 cm) = 24 cm³ = 24 mL

If object B displaces 19 mL of water, we presume that is its volume. Since 24 mL is more than 19 mL, we conclude ...

 The volume of object A is greater than the volume of object B.

_____

Comment on density

We have presumed that object B is completely submerged. If it is not, then the relative volumes will depend on the densities. If the density of object B is less than about (19/24) g/mL, its volume may very well be larger than that of object A.

Final answer:

The toy on a spring converts energy between elastic potential energy, kinetic energy, and gravitational potential energy, demonstrating the principles of the Law of Conservation of Mechanical Energy. So the correct option is a.

Explanation:

The toy on a spring illustrates energy conversion among different forms of energy. The correct answer is a. Gravitational potential energy, kinetic energy, and elastic potential energy. Initially, the toy has elastic potential energy due to the compression of the spring. When the spring is released, this energy is converted into kinetic energy as the toy begins to move. As the toy moves up a slope, kinetic energy is gradually converted into gravitational potential energy. The toy's energy transitions between these forms without any loss if we assume negligible friction and air resistance, consistent with the Law of Conservation of Mechanical Energy.

Answer:

The center of the Milky Way most likely contains a supermassive black hole.

Explanation:

Because it is  an eleptical galaxy, it has a little rotation to it but not enough to flatten out so the center will contain a supermassive black hole.

The Mariner 10 probe was launched by NASA on November 3rd, 1973, with the purpose of exploring the characteristics of two planets in the solar system that were closest to the Sun, Mercury and Venus.  

In addition, it was launched to explore the atmosphere and surface of both planets and prove that it was possible to use gravitational assistance (also called slingshot effect, a special orbital maneuver in order to use the gravitational field energy of a planet or massive body to accelerate or slow the probe and change the direction of its trajectory) in long interplanetary trips to save fuel.  

In this case, Mariner 10 first arrived at Venus and succeded in using its gravitational field to accelerate its trajectory towards Mercury.

The planet visited by Mariner 10 in 1974 was Mercury.

Answer:

energy cannot be created or destroyed

Explanation:

Energy can't be created nor destroyed; rather, it transforms from one form to another.

Answer:

The law of conservation of energy states that energy  cannot be  created or destroyed.

According to Ohm's law, the voltage drop V across a resistor when a current flows through it is V = IR. To determine the battery voltage needed to send 2.5 A of current through a light bulb with 3.6 Ω of resistance, we rearrange Ohm's law and substitute the known values.

According to Ohm's law, the voltage drop V across a resistor when a current flows through it is calculated using the equation V = IR, where I equals the current in amps (A) and R is the resistance in ohms. To determine the battery voltage needed to send 2.5 A of current through a light bulb with 3.6 Ω of resistance, we rearrange Ohm's law as V = IR. Substituting the known values, we have V = (2.5 A)(3.6 Ω), which gives us a battery voltage of 9 V.

The average velocity of the object can be found by calculating the change in position divided by the change in time.

The average velocity of the object from t=1 to t=1+h seconds can be found by calculating the change in position divided by the change in time.

To find the change in position, subtract s(1) from s(1+h):

s(1+h) - s(1) = (160-16(1+h)^2) - (160-16(1)^2)

simplifying gives: -16h - 16h^2

To find the change in time, subtract 1 from 1+h: 1+h - 1 = h

So, the average velocity is:

-16h - 16h^2 / h = -16 - 16h

Therefore, the correct answer is d. -32 + 16h.

Weight = (mass) x (gravity)

so

Mass = (weight) / (gravity)

Mass = (3000N) / (9.8 m/s^2)

Mass = 306.1 kg

But he could never stand on one foot balanced on a step stool. The poor kid weighs 675 pounds ! !

The mass of a student can be calculated using the formula F = m*g. Hence the mass is approximately 305.81 kg.

To find the mass of the student, we need to convert the weight to force using the formula, F = m * g where F is the force or weight, m is the mass, and g is the acceleration due to gravity (g = 9.8 m/s² on Earth)  or Using the relationship between weight and mass, which is expressed by the formula W = m*g, where W is weight.

To calculate the mass (m), we rearrange the formula to m = W/g.

m = 3000 N / 9.81 m/s^2 =  305.81 kg

Therefore, the mass of the student who exerts a force of 3000N due to gravity on the step stool while balancing on one foot is 305.81 kilograms.

Answer: Entropy is the measure of the disorder of a system

Explanation:

Entropy is a thermodynamic quantity defined as a criterion to predict the evolution or transformation of thermodynamic systems. In addition, it is used to measure the degree of organization of a system.

In other words: Entropy is the measure of the disorder of a system and is a function of state. That is, it depends only on the state of the system.  

However, in the case of an isolated system in an irreversible process, the value of entropy increases in the course of a process that occurs naturally. While in a reversible process the entropy of the isolated system remains constant.

Answer: 1

Explanation: The highest eccentricity an ellipse can have is '1', a straight line.

The maximum eccentricity an ellipse can have is 1.0, which makes the ellipse appear 'flat' or extremely elongated. Eccentricity is the ratio of the distance between the foci and the length of the major axis.

In the world of Mathematics, specifically within the context of Geometry, an Ellipse is a particular shape that can be modified by altering its eccentricity. The eccentricity of an ellipse is determined by the ratio of the distance between the two foci and the length of the major axis.

The eccentricity thus dictates the roundness of the ellipse. For instance, if the eccentricity is zero, the ellipse is indeed a circle. As the eccentricity increases, the ellipse becomes more elongated. The maximum eccentricity an ellipse can have is 1, beyond which the ellipse would be considered a line. When the eccentricity is exactly 1, the ellipse is at its most elongated state, appearing almost 'flat'.

To make it more precise, eccentricity is calculated as e = f/a where 'f' is the distance from the center of the ellipse to one of the foci, and 'a' is half the long axis.

https://brainly.com/question/8047982

#SPJ3

Explanation:

The Work [tex]W[/tex] done by a Force [tex]F[/tex] refers to the release of potential energy from a body that is moved by the application of that force to overcome a resistance along a path.  

Now, when the applied force is constant and the direction of the force and the direction of the movement are parallel, the equation to calculate it is:  

[tex]W=(F)(d)[/tex] (1)  

In this case both (the force and the distance in the path) are parallel (this means they are in the same direction), so the work [tex]W[/tex] performed is the product of the force exerted to push the box [tex]F=45N[/tex] by the distance traveled [tex]d=12m[/tex].

Hence:  

[tex]W=(45N)(12m)[/tex]   (2)

[tex]W=540Nm=540J[/tex]

Answer: W

Explanation:

For Edmentum the answer is simply   W

Explanation:

The intertropical convergence zone is the region of the terrestrial globe where the trade winds of the northern hemisphere converge with those of the southern hemisphere.  

It is characterized by being a belt of low pressure and inconsistent location around the equator constituted by ascending air currents, where large masses of warm and humid air converge from the north and south of the intertropical zone.  

The reason of its inconsistent location is due to the movements of the Earth with the seasons, having as a consequence the amount variation of heat energy from the sun in this region.

Ionic compounds have high melting points due to the strong electrostatic forces of attraction between ions, which require a great deal of energy to break.

The high melting points of ionic compounds are best explained by the B option: ionic bonds require a great deal of energy to break. This is because ionic compounds are formed by the strong electrostatic forces of attraction between positively charged cations and negatively charged anions. This strong inter-ionic bonding makes ionic compounds hard, requiring substantial energy to overcome and result in a high melting point.

https://brainly.com/question/33500527

#SPJ6

Answer:

D or 49.7°

Explanation:

You are given the equation and all the information you need, so you simply need to understand what the question asks for and answer appropriately. Notice that the light wave travels from the water to air. This means that water should be labelled with a "1" as it comes prior to air, which should be labeled "2". Thus, all you need to do, is plug and chug:

[tex]\theta_2 = sin^{-1}(\frac{n_1sin(\theta_1)}{n_2}) = sin^{-1}(\frac{(1.33)sin(35)}{1})[/tex]

[tex]\theta_2 = sin^{-1}(0.763) = 49.7^o[/tex]

And, therefore, your answer is D, 49.7°.

Answer:

The two integers are 28 and 9

Explanation:

Let's call the two integers x and y.

We have:

- The largest of the 2 integers is one more than three times the smaller: this means

x = 3y + 1 (1)

- The sum of the two integers is 37:

x + y = 37 (2)

It's a system of two equations that we can solve. Substituting directly (1) into (2),

3y + 1 + y = 37

4y + 1 = 37

4y = 36

y = 9

And so,

x = 3y + 1 = 3(9) + 1 = 27 +1 = 28

So the two integers are 28 and 9.