Fill in the blank with either “insulators†or “conductors†to complete the sentence. the conductivity of a material is determined by the number of free electrons. _____have few or no free electrons.

Answer:

1) Are always conservative

Explanation:

Elastic forces are always conservative.

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The impressed force increases when Tyra pushes the pedals of her bicycle, the momentum of the bike increases hence it moves faster.

The Newton's laws of motion lay the foundation for dynamics. According to Newton's second law, the rate of change of momentum is directly proportional to the impressed force.

Hence, as the impressed force increases when Tyra pushes the pedals of her bicycle, the momentum of the bike increases hence it moves faster.

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The number of oscillations of the toy in a second is 1.25.

The given parameter:

The frequency of an object is calculated as follows;

\(f = \frac{n}{t} \\\\\)

where;

The number of oscillations of the toy in a second is calculated as follows;

\(1.25 = \frac{n}{1} \\\\n = 1.25\)

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The distance from the Sun is not a reason for the large size of volcanoes on Mars compared to Earth's.

The right response is B. Distance from the Sun.The size of a spring of gushing lava is for the still up in the air by how much magma that is ejected, and this can be impacted by different elements.

While there are a few distinctions in the geography of Mars and Earth, these are not the essential justifications for why volcanoes on Mars will generally be bigger than those on The planet. One justification behind the bigger size of Martian volcanoes is the shortfall of plate tectonics, which permits magma to gather over the long run in a solitary area.

One more component is the lower surface gravity on Mars, and that implies that magma can rise all the more effectively through the outside and emit in bigger volumes.

Moreover, numerous Martian volcanoes have encountered rehashed ejections over a significant stretch of time, which can likewise add to their huge size. In any case, the separation from the Sun isn't an element that would influence the size of Martian volcanoes contrasted with Earth's.

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Answer:

Explanation:

the diagonal of the rectangular plot of land  can be found using Pythagoras theorem (the diagonal is the hypotenuse)

Given

length of land x= 48m

width of land y= 20m

digonal z= ?

\(z^2= x^2+y^2\\\\z=\sqrt{ x^2+y^2} \\\)

substituting the values of x and y into the equation we can solve for z

\(z=\sqrt{ 48^2+20^2} \\\\z=\sqrt{ 2304+400} \\z=\sqrt{ 2704} \\z=52m\\\)

The diagonal is 52m

Hence since the interval = 22m the number if treee is

\(\frac{52}{22} = 2.36\\\)

The number of trees must be whole numbers , the number of tree is 2

Answer: The part of the microscope that is the circular area is the APERTURE

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Answer:

The value of the momentum is 5.8 kg meters per second.

Explanation:

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Potential energy is the power that a thing possesses as a result of where it is in relation to other objects.

The earth can pull you down through the force of gravity while doing work in the process, being at the top of a stairwell gives you more potential energy than standing at the bottom.

Two magnets have more potential energy when they are held apart than when they are near to one another. They will migrate near each other and begin working if you let them go.

The force acting on the two objects affects the potential energy formula. P.E. = mgh, where m is the mass in kilograms and g is the acceleration due to gravity, is the formula for gravitational force.

Therefore, Potential energy is the power that a thing possesses as a result of where it is in relation to other objects.

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Moving from the element with atomic number 10 to atomic number 11 on the periodic table, the following which are true include the following:

A. reactivity increases

C. neon has another shell (energy level, orbit), meaning the atom will be larger.

E. valence electrons in sodium are farther from the nucleus

F. atomic number 11 does not have a full electron shell.

This is referred to as the tabular arrangement of elements into rows which is referred to as period or column which is referred to as group.

The reactivity increases in this scenario and atomic number 11 does not have a full electron shell because there is one valence electron which means it doesn't have stable octet configuration.

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Answer:

heterogeneous and homogeneous

Explanation:

Hetero you can separate whilst homo is combined and cant be separated

Answer:

Pluto.

Explanation:

an observary in Flagstaff, Arizona, discorvered it.

Given:

Vector A = 63.5 m at 90 degrees

Vector B = 101 m at 57.0 degrees

Let's find the direction of the sum of these two vectors.

To find the direction, let's first find the x- and y-components of the vectors.

• Vector A:

• Vector B:

For the sum of components, we have:

x = Ax + Bx = 0 + 55 = 55 m

y = Ay + By = 63.5 + 84.7 = 148.2 m

Now, to find the direction of the sum, we have:

Plug in the values and solve for θ.

We have:

Therefore, the direction of the sum of the vectors is 69.6 degrees.

ANSWER:

69.6 degrees.

After staying together, the two objects come to rest while retaining motion but losing kinetic energy. Heat is created when some of the motion's energy momentum is transformed to thermal energy.

What happens when two things clash with one another?

Each thing pushes the other when two objects come into contact. Imagine using a bat to strike a softball. The ball is pushed away by the bat when it collides with it. The bat experiences force from the ball as well.

Which two sorts of collisions are there?

Collisions might be of two different types: collisions that are inelastic: momentum is preserved, Momentum and kinetic energy are both preserved in elastic collisions.

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d)A solar cell is an object that converts light into chemical energy.

It works by using sunlight to convert photons into electrons, which are then used to generate electricity. Solar cells can be used to power a variety of objects, such as calculators, phones, and other electronic devices. They can also be used to generate electricity for homes and businesses. Solar cells are made of special materials that allow them to capture light and convert it into energy. When sunlight hits the solar cell, electrons in the material become excited and move freely, creating an electric current. This current is then used to produce electricity.

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The current flowing through a 5Ω resistor in parallel depends on the total resistance of the parallel circuit.

In a parallel circuit, the total resistance (R_total) is calculated using the formula:

1/R_total = 1/R₁ + 1/R₂ + 1/R₃ + ...

In this case, we have only one resistor, which is 5Ω. Therefore, the total resistance in the parallel circuit would be equal to the resistance of the single resistor:

R_total = 5Ω

Now, to determine the current flowing through the resistor, we can use Ohm's Law, which states that:

I = V/R

However, we need the voltage (V) across the resistor to calculate the current. Without the voltage value, we cannot provide an accurate answer. Voltage is required to determine the current flowing through a resistor in a parallel circuit. If you provide the voltage value, we can proceed with the calculation.

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Answer with Explanation:

Elliptical galaxy = Forms a perfect sphere or an ellipse and is flattened to some degree.

Galaxy = Is a collection of several billion stars and interstellar matter isolated in space.

Lens galaxy = Has a large flattened core.

Spiral galaxy = Has a central core from which curved arms spiral outward.

Answer:

Elliptical galaxy – Forms a perfect sphere or an ellipse and is flattened to some degree.

Galaxy – Is a collection of several billion stars and interstellar matter isolated in space.

Lens galaxy – Has a large flattened core.

Spiral galaxy – Has a central core from which curved arms spiral outward.

a. If the original image location is (3/2, 3, 1/2) and the new image plane is z=1, the scene point would appear at a different image location in the new picture. Suppose the scene point appears at the image location (xy.z), with x+z=2, and we want to capture it with a camera using an image plane of z=1.

In this scenario, the original image location is given as (3/2, 3, 1/2), which means the point in the scene is projected onto the original image plane at that location. By changing the image plane to z=1, we are essentially moving the image plane closer to the camera's focal point. To find the new image location, we can consider the similar triangles formed by the original and new image planes. Since the new image plane is half the distance from the focal point compared to the original image plane, the image location will also be halved. Therefore, the new image location can be calculated as (3/2) * (1/2) = 3/4 for x-coordinate, 3 * (1/2) = 3/2 for y-coordinate, and 1/2 * (1/2) = 1/4 for z-coordinate, resulting in the new image location of (3/4, 3/2, 1/4). To determine where this point will appear in the image, we can generalize the formula. Let's denote the original image location as (x0, y0, z0) and the new image location as (x1, y1, z1). Considering the similar triangles formed by the two image planes, we can establish a proportion: (x1 - 0) / (x0 - 0) = (z1 - 1) / (z0 - 1) Simplifying this proportion, we find: x1 = x0 * (z1 - 1) / (z0 - 1) y1 = y0 * (z1 - 1) / (z0 - 1)

z1 = 1 Therefore, the general formula to determine the new image location (x1, y1, z1) given the original image location (x0, y0, z0) and the new image plane z=1 is:

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Answer:

The correct option is;

πR³(2/3 + (1/3)cos³θ - cosθ)

Explanation:

The volume of a segment of a sphere is given by the relation;

\(V = \pi \cdot h^2 \cdot \left (R - \dfrac{h}{3} \right)\)

We note that h = R - R·cos(θ)

Therefore by substituting the value of h in the equation of a segment of a sphere, we have;

\(V = \pi \cdot \left (R - R\cdot cos(\theta) \right ) ^2 \cdot \left (R - \dfrac{\left (R - R\cdot cos(\theta) \right )}{3} \right)\)

Which gives;

\(\dfrac{R^3\cdot \pi \cdot cos^3 (\theta) -3 \cdot R^3 \cdot\pi \cdot cos (\theta) + 2 \cdot R^3 \cdot \pi}{3}\)

\(R^3\cdot \pi \cdot \left (\dfrac{cos^3 (\theta) -3 \cdot cos (\theta) + 2 }{3} \right )\)

\(R^3\cdot \pi \cdot \left (\dfrac{cos^3 (\theta) + 2 }{3} - cos (\theta) \right )\)

\(R^3\cdot \pi \cdot \left (\dfrac{cos^3 (\theta) }{3} + \dfrac{2}{3} - cos (\theta) \right )\)

Therefore, the correct option is πR³(2/3 + (1/3)cos³θ - cosθ).

The plastic straws were placed under the wooden block to decrease the amount of friction

The ramp would be classified as an inclined plane

An inclined plane is a simple machine that consists of a flat surface that is tilted or sloped at an angle relative to the horizontal plane. It allows an object to be moved from a lower height to a higher height with less force than would be required to lift the object directly.

The inclined plane works by reducing the force required to move an object vertically by increasing the distance over which the force is applied.

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"The angle formed by a body segment with respect to horizontal is the relative angle. Thus, the correct option is A. relative angle.

A relative angle is a measure of the angle between two segments, one of which is the distal segment, and the other of which is the proximal segment. It's used in a variety of fields, including physical therapy, kinesiology, and biomechanics. The relative angle is the difference between the angles of the two segments' orientations. The angle is known as the relative angle because it is determined by comparing two angles to one another instead of comparing an angle to a set horizontal or vertical line. It's frequently employed to assess joint motion in physical therapy, kinesiology, and biomechanics, among other fields.

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Answer:The period of a longitudinal wave is the time taken by the wave to move one wavelength. As for transverse waves, the symbol T is used to represent period and period is measured in seconds (s).

Explanation:

The vibration amplitude of a spring with a constant of 20 N/m which has a speed of 1.5 m/s with a mass of 0.50 kg which is associated = 0.237 m.

When an object oscillates on a spring, the kinetic energy and potential energy of the mass-spring system change with time.

The total energy (the kinetic energy + potential energy) is constant.

The kinetic energy of an object moving with speed v is:

½ mv².

The potential energy of a spring with a constant k is:

= ½ kx².

The total energy = ½ kx² + ½ mv² = ½ kA².

The total energy equation gives the general property of simple harmonic oscillations which is directly proportional to the square of the amplitude.

And, we have:

m = 0.50 kg

k = 20 N/m

v = 1.5 m/s

Remember, the total energy = ½ kA².

So,

A² = (m)(v)² / k

= (0.50) (1.5)² / 20

= 0.05625

A = \(\sqrt{0.05625}\)

= 0.237 m

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The final speed of the go-cart in this inelastic collision is 70 m/s. The result is obtained by using the concept of inelastic collision.

The inelastic collision of two objects occur when some of the kinetic energy is lost, converted to other forms. It means that the law of conservation of kinetic energy doesn't apply.

In this case, both objects will stick together and move together with the same speed. The law of conservation of momentum applies.

m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

Where

The 4-wheeler collides with the go-cart in inelastic collision.

Find the final speed of the go-cart!

Note that this is an inelastic collision. In this case, the 4-wheeler and go-cart will stick together and move with the same speed.

The formula for conservation of momentum will be

m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

m₁v₁ + m₂v₂ = (m₁ + m₂)v'

It means that

v₁' = v₂' = v'

The final speed of the go-cart is the same with the final speed of the 4-wheeler.

v₂' = v₁' = 70 m/s

Hence, the go-cart will have the final speed of 70 m/s.

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Answer:

There are 5 lobes in the lungs.

Explanation:

The right lung consists of three lobes: the RUL, the RML, and the RLL. While the left lung consists of two lobes: the LUL, and the LLL.

1) Frequency

2) I dont know this one sorry

Answer:

Pressure of .2 m^3 of bricks:

Pb = ρ g H = 1.8 ρw * 9.80 m/s^2 * .20 m = 1800  * 9.8 * .2 = 3530 Pascals

ρb = 1.8 ρw = 1.8    since the density of bricks is 1.8 that of water

Pw = 1 * 9.8 * 1000 * .2 = 1960 Pascals

W = P * A   pressure * Area = Force

Pnet = 1570 Pascals - pressure due to bricks under water

F = 1570 N/m^2 * .2m^2 = 63 N     force on pile of bricks

If you see Polaris directly overhead at midnight, you must be at or very close to the North Pole.                                                    

Polaris is also known as the North Star, and it appears to be stationary in the sky while all the other stars appear to rotate around it. This is because Polaris is almost directly above the Earth's North Pole, making it a useful tool for navigation. So, if you find yourself staring up at Polaris at midnight, you can be sure that you are very close to the top of the world!
When standing at the North Pole, Polaris appears directly overhead in the sky. Since the position of Polaris does not change significantly throughout the night, observing it overhead at midnight implies that you are indeed at the North Pole.

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