Which parts of atoms can interact (react) to form chemical bonds?

a) valence electrons

b) protons

c) the nucleus of each atom

d) the orbitals

Average number of team members who reached their goal per day = 4.2

Number of team members that reached their goals on Monday = 5

Number of team members that reached their goals on Tuesday = 4

Number of team members that reached their goals on Wednesday = 2

Number of team members that reached their goals on Thursday = 7

Number of team members that reached their goals on Friday = 3

Total number of team members that reached their goals = 5 + 4 + 2 + 7 + 3

Total number of team members that reached their goals = 21

Average number of team members who reached their goal per day = 21/5

Average number of team members who reached their goal per day = 4.2

Answer:

140

hope this helps

have a good day :)

Explanation:

Your eye as well as the spider's image in the mirror are 1.28 meters apart.

A mirrors is a luminance that reflects light and creates an actual or fictitious picture. An device that returns an image is a reflector or looking glass, which reflects the image of the object when it is positioned in front of it. When focused through an eye or camera lens, light that reflects off a mirror will reveal an image of everything that was in front of it. Mirrors reflect light at an equal but opposite angle, reversing the orientation of the image.

The image distance is equal to the object distance:

Distance between the spider and mirror = 40cm

So, the image is formed 40cm inside the mirror

Distance between the person and mirror = 68cm

Distance between the image and person = 68+40= 128cm

To know more about image visit:

https://brainly.com/question/3795433

#SPJ4

Answer:86,400

Explanation:

Answer:

the total work done is 90J

Explanation:

the reason why is because you are the force (30 newtons) and the metere (3) so you will be multiplying those two numbers together.

W= FD 30(3)= 90J

\(O = Q/4PiR^{2}\) is the surface charge density, sigma, on the outer surface of the conducting sphere.

The load per group of a double surface area is defined as surface charge density. It is a measurement of how much electric charge accumulates on a surface. It is represented by the symbol, and the SI unit is Coulombs for each square meter, abbreviated  \(Cm^{2}\).

A surface charge is a non-zero electric charge on a two-dimensional surface. These electric fields are constrained here on the 2-D surface, and the bias voltage on the surface is described by surface charge density, which is measured even in coulombs per square meter.

Surface charge density is defined in electromagnetism also as the quantity of electric charge per unit length, volume, or surface area. surface charge is inverse to the conductor radius of curvature.

learn more about surface charge density here:

https://brainly.com/question/28447120?referrer=searchResults

#SPJ4

Answer:

because it helps to neutralize acid in our body.

Answer:

The time is identical, since both pulses travel at the speed of light.

Explanation:

Answer:

the answer to your question is c

Answer:

In reality, the filament gets so hot it in a real sense bubbles off molecules and electrons. Now and again this material gathers as a dull spot at the highest point of the bulb. Eventually, the filament falls apart, gets frail, and breaks, subsequently finishing the life of the light. Lights radiate light by siphoning an electric flow through a dainty tungsten fiber. The filament warms and emits light. Over the long haul, the filament oxidizes and turns out to be increasingly fragile, until it splits up and the bulb goes out. ... Tungsten picks up obstruction as it warms.

Hope this helped :)

Answer:

The correct option is;

C. 25 m/s

Explanation:

The initial velocity with which the boulder was thrown = 25 m/s

The path in which the boulder projectile moves = 30°

For projectile motion, we have;

The time it takes the boulder to hit the ground is given by the following equation;

y = y₀ + v₀·sin(θ₀)t -¹/₂·g·t²

Where;

y = The height of the boulder

y₀ = The initial height of the boulder = 0

g = The acceleration due to gravity = 9.81 m/s²

When the boulder touches the ground again, the value  of y = 0. therefore, we have;

0 = 0 + 25 × sin(30)t -¹/₂ × 9.81 × t²= 12.5·t - 4.905·t²

From which we have, t = 0 or t ≈ 2.55 s

At t = 2.55 s The vertical velocity = v₀sin(θ₀) - g·t = 25 × 0.5 - 9.81×2.55 =  -12.5 m/s

The vertical velocity, \(v_y\) =  -12.5 m/s

The horizontal velocity, vₓ = v₀·cos(θ₀) = 25×cos(30) ≈ 21.65 m/s

The magnitude of the resultant velocity before, the boulder hits the ground is given as follows

\(\left | v \right |\) = √((vₓ)² + (\(v_y\))²) = √(12.5² + 21.65²) = √625 = 25

The magnitude of the resultant velocity before, the boulder hits the ground is 25 m/c

Answer:

True

Explanation:

Its true

The statement "Galaxies are made of millions of stars, interstellar gas, and dust that stay relatively close together due to magnetic attraction." is false.

Gravitation, also known as gravity, is a fundamental force of nature that attracts objects with mass or energy toward each other. It is the force that keeps planets in orbit around stars, stars in orbit around the centers of their galaxies, and all objects on the surface of the Earth.

According to Newton's law of gravitation, every mass in the universe attracts every other mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This means that the larger the masses of the objects and the closer they are to each other, the greater the gravitational force between them.

In this question,

Galaxies are made up of millions, or even billions, of stars along with interstellar gas and dust. However, the gravitational force, not magnetic attraction, is what holds the stars and other components of a galaxy together. The gravitational attraction between the stars and other matter in the galaxy is what allows them to orbit around the center of mass of the galaxy. In fact, the vast majority of matter in a galaxy is dark matter, which is an invisible and unknown form of matter that interacts gravitationally with other matter in the galaxy.

While magnetic fields do exist in galaxies, they are generally much weaker than gravitational forces and play a secondary role in the structure and dynamics of galaxies.

To learn more about Newton's law of universal gravitation click:

https://brainly.com/question/858421

#SPJ3

Answer:

The answer would be A

Explanation:

Answer:

D

Explanation:

These all can impact the magnetic properties

Answer:I think it’s D

Explanation:

Conduction needs direct touch to transfer

Answer:

Explanation:

The apple also exerts an equal and opposite force on the earth but earth does not move because the mass of apple is very small,due to which the gravitational force produces a large acceleration in it (a=F/m) and we can see the apple falling towards the earth but the mass of earth is very large,the same gravitational .

Answer:

Ff = 7.35*10^5 N

Explanation:

To find the maximum transverse pulling force you use the following formula, for the friction force:

\(F_f=\mu N=\mu Mg\) (1)

μ: friction coefficient = 0.15

N: normal force, which is equal to the weight over the wheel

M: mass of th train = 500 ton = 500 000 kg

g: gravitational acceleration = 9.8 m/s^2

You replace the values of the variables in the equation (1):

\(F_f=(0.15)(500000kg)(9.8m/s^2)=735000 N=7.35*10^5N\)

hence, the maximum transverse pulling force is 7.35*10^5 N

Answer:32

(im not sure if this is right but im just gonna try and explain.)

Explanation: If Larry and the two other people are both pulling at the same force, it wouldn't be able to move.

(a)The Young's modulus of the beam material using Hooke's law is 200 GPa.(b)The Young's modulus of the beam using Euler-Bernoulli beam theory is 200 GPa.

(a) The fiber stress at the gage location is calculated using the following equation:

σ = Eε

where σ is the stress in kPa, E is the Young's modulus in GPa, and ε is the strain in micro-strain.

The Young's modulus for steel is 200 GPa. The strain is 165 micro-strain.

Substituting these values into the equation, we get:

σ = (200 GPa)(165 micro-strain) = 33 kPa

Therefore, the fiber stress at the gage location is 33 kPa.

The Young's modulus of the beam material using Hooke's law is calculated using the following equation:

E = σ/ε

where E is the Young's modulus in GPa, σ is the stress in kPa, and ε is the strain in micro-strain.

The stress is 33 kPa. The strain is 165 micro-strain.

Substituting these values into the equation, we get:

E = (33 kPa)/(165 micro-strain) = 200 GPa

Therefore, the Young's modulus of the beam material using Hooke's law is 200 GPa.

(b) The deflection of the beam at the probe location is calculated using the following equation:

δ = sL3/4EI

where δ is the deflection in mm, s is the slope of the calibration equation in mm/V, L is the length of the beam in cm, E is the Young's modulus in GPa, and I is the moment of inertia in cm4.

The slope of the calibration equation is 0.25 mm/V. The length of the beam is 30 cm. The Young's modulus is 200 GPa. The moment of inertia is (24 mm)(8 mm)^3 / 12 = 15360 mm^4.

Substituting these values into the equation, we get:

δ = (0.25 mm/V)(30 cm)^3 / 4(200 GPa)(15360 mm^4) = 0.15 mm

Therefore, the deflection of the beam at the probe location is 0.15 mm.

The Young's modulus of the beam using Euler-Bernoulli beam theory is calculated using the following equation:

E = 3(FL/δ^2)

where E is the Young's modulus in GPa, F is the force in N, L is the length of the beam in cm, and δ is the deflection in mm.

The force is (300 g)(9.81 m/s^2) = 294 N. The length of the beam is 30 cm. The deflection is 0.15 mm.

Substituting these values into the equation, we get:

E = 3(294 N)(30 cm)/(0.15 mm)^2 = 200 GPa

Therefore, the Young's modulus of the beam using Euler-Bernoulli beam theory is 200 GPa.

To learn more about  Hooke's law visit: https://brainly.com/question/17068281

#SPJ11

Answer:

10 N south

Explanation:

It cancels out the north allowing the object to keep going west :)

i think this might be wrong so like don't trust me-

The gain in translational kinetic energy of the cylinder when it has rolled 5m down the incline of the plane is approximately 345.6 J.

Given data:

Diameter, d = 0.20 mRadius,

r = 0.10 mMass of cylinder,

m = 12 kgInclined angle, θ = 37°

Distance traveled by cylinder, s = 5m

We know that work done by the gravitational force is the change in potential energy.

W=Fhsinθ... (1)

The kinetic energy of rolling objects is equal to its rotational kinetic energy plus its translational kinetic energy.

K = 1/2Iω² + 1/2mv²... (2)

The moment of inertia of a solid cylinder I=mr²/2.

Using conservation of energy principle:

Gain in translational kinetic energy of the cylinder is equal to the loss in potential energy.

Thus,

½mv²=mgH-mgSins....(3)

When the cylinder rolls without slipping, its velocity is equal to its angular velocity multiplied by its radius

v=ωr

Therefore, the rotational kinetic energy can be expressed as

1/2Iω²=1/2mr²ω²/2.... (4)

Using equations (1), (2), (3), and (4),

we can find the gain in translational kinetic energy of the cylinder while it rolls 5m down the incline of the plane.

K=1/2mv²=1/2m(v=ωr)²=1/2mr²ω²/2=1/2Iω²=1/2(12)(0.10)²(2/2)=0.12J... (5)

Potential energy, P=mgh=mgSins=12(9.8)(5)sin37°=294.2 J... (6)

So, using equations (5) and (6), we can get the gain in translational kinetic energy of the cylinder to be approximately:

K = 294.2 J – 0.12 J = 294.08 J

Therefore, the gain in translational kinetic energy of the cylinder when it has rolled 5 m down the incline of the plane is approximately 345.6 J.

learn more about kinetic energy here

https://brainly.com/question/8101588

#SPJ11

Answer:

On the other hand, Florida's Gulf Coast experiences the greatest number of thunderstorms out of any U.S. location. These types of storms occur on average 130 days per year in Florida.

An element of atomic number 88 decays radioactively to an element of atomic number 82. The emissions that achieve this result is one alpha particle. The correct option is D. The emission that achieves this result is one alpha particle. The correct option is C.

To determine the emissions that achieve the radioactive decay from an element with atomic number 88 to an element with atomic number 82, we need to consider the changes in atomic number and mass number during the decay process.

In a radioactive decay, the atomic number decreases by the emission of a particle, and the mass number decreases by a specific amount as well.

Atomic number of initial element = 88

Atomic number of final element = 82

From this information, we can conclude that the decay process involves the emission of an alpha particle.

The emission of an alpha particle corresponds to the emission of a helium nucleus, which consists of two protons and two neutrons. This emission reduces the atomic number by 2 and the mass number by 4.

Therefore, the emission that achieves this result is C, one alpha particle.

To know more about alpha particle, refer here:

https://brainly.com/question/24276675#

#SPJ11

Answer:

The magnitude of magnetic force between the two parallel wires is 1.13 N.

Explanation:

Given;

length of each wire, l = 31 m

distance between the two parallel wires, r = 0.155 m

current on each wire, I = 168 A

The magnitude of magnetic force between the two parallel wires is calculated as;

\(F = \frac{\mu _oI_1I_2 L}{2\pi r} \\\\F = \frac{(4\pi \times 10^{-7}) \times (168)^2 \times (31)}{2\pi \times 0.155} \\\\F = 1.13 \ N\)

Therefore, the magnitude of magnetic force between the two parallel wires is 1.13 N.

The pressure on the floor when Anna does a handstand with both of her hands is 17.15 KPa

F = m g

F = Force

m = Mass

g = Acceleration due to gravity

m = 70 kg

g = 9.8 m / s²

F = 70 * 9.8

F = 686 N

Area of one hand = 0.02 kg

Since she does a handstand with both hands, the total area,

A = 0.02 * 2

A = 0.04 m²

P = F / A

P = Pressure

A = Area

P = 686 / 0.04

P = 17150 Pa

P = 17.15 KPa

Therefore, the pressure on the floor is 17.15 KPa

To know more about pressure

https://brainly.com/question/8033367

#SPJ4

The power output of the man pulling the bar can be calculated as follows:

Power = Work / Time

The work done by the man is equal to the force he exerts multiplied by the distance he moves the weights:

Work = Force x Distance

The force he exerts is equal to the weight of the weights he is lifting:

Force = Weight x g

where g is the acceleration due to gravity, which is approximately 10 m/s^2.

Plugging in the given values, we get:

Force = 30 kg x 10 m/s^2 = 300 N

Work = Force x Distance = 300 N x 0.5 m = 150 J

Power = Work / Time = 150 J / 0.5 s = 300 W

Now we can check which of the other options exerts the same power output:

Option A:

Force = 25 kg x 10 m/s^2 = 250 N

Work = Force x Distance = 250 N x 2.4 m = 600 J

Power = Work / Time = 600 J / 2.0 s = 300 W

Option B:

Force = 45 kg x 10 m/s^2 = 450 N

Work = Force x Distance = 450 N x 2.4 m = 1080 J

Power = Work / Time = 1080 J / 3.0 s = 360 W

Option C:

Force = 45 kg x 10 m/s^2 = 450 N

Work = Force x Distance = 450 N x 0.5 m = 225 J

Power = Work / Time = 225 J / 0.5 s = 450 W

Option D:

Force = 30 kg x 10 m/s^2 = 300 N

Work = Force x Distance = 300 N x 0.5 m = 150 J

Power = Work / Time = 150 J / 1.5 s = 100 W

Therefore, options A and B exert the same power output as the man pulling the bar, while options C and D do not.

NACA 0012 produces large nose-up moments with increases in Angle of Attack.

When the Angle of Attack is increased, the flow over the top of the airfoil is disturbed and separates from the surface, creating a low-pressure region above the airfoil. This creates a lift force perpendicular to the direction of airflow. However, this also creates a moment that rotates the airfoil nose-up around its center of gravity. This nose-up moment is more pronounced in airfoils with a relatively flat upper surface like the NACA 0012. Thus, the NACA 0012 produces large nose-up pitching moments with increases in Angle of Attack.

To learn more about, NACA 0012, click here, https://brainly.com/question/31957776

#SPJ11

Answer:

The objects meet after 2.033722438s, at a height 136.5334679m from the ground.

Explanation:

Call the object being dropped A and the object being thrown B.

When the objects meet, the time ('t') for both objects will be equal, and the sum of their distances will be equal to 156.8m.

Figure out the distance for A in terms of time, t:

s = ut + (1/2)at²

= 0t +(1/2)(9.8)t²

=4.9t²

Figure out the distance for B in terms of time, t:

s = ut + (1/2)at²

=(77.1)t + (1/2)(-9.8)t²

=77.1t - 4.9t²

We now adding the distances gives us 156.8, so can write:

(4.9t²) + (77.1t - 4.9t²) = 156.8

77.1t = 156.8

∴ t = 2.033722438s

To find the distances, plug in this value for t:

For A: 4.9t² → 20.26653209m

For B: 77.1t - 4.9t² → 136.5334679m

The objects will meet 155.2 meters below the top of the tower after 15.7 seconds.

The formula to calculate the time it takes for the object thrown upwards to return to the ground:

Time = 2 * Initial velocity / gravitational acceleration

Plugging in the values given in the question, you can calculate the time as follows:

Time = 2 * 77.1 m/s / 9.8 m/s^2 = 15.7 seconds

To determine when and where the objects meet, you can use the following formula to calculate the height of the object thrown upwards at any given time:

\(Height = Initial velocity * time - (1/2) * gravitational acceleration * time^2\)

Plugging in the time calculated above and the initial velocity and gravitational acceleration given in the question, you can calculate the height of the object at the time it returns to the ground as follows:

Height = 77.1 m/s * 15.7 s - (1/2) * 9.8 m/s^2 * (15.7 s)^2 = -1.6 meters

This means that the object thrown upwards returns to the ground 1.6 meters below the point where it was launched. The object dropped from the top of the tower will also have fallen a distance of 156.8 meters in the same amount of time, so the two objects will meet at a point 156.8 meters - 1.6 meters = 155.2 meters below the top of the tower

Learn more about height, here:

https://brainly.com/question/29710719

#SPJ2

Answer:

The amount of friction depends on the force pushing the surfaces together. If this force increases, the hills and valleys of the surfaces can come into closer contact. The close contact increases the friction between the surfaces. Objects that weigh less exert less downward force than objects that weigh more.

Explanation:

Friction depends partly on the smoothness of the contacting surfaces, a greater force being needed to move two surfaces past one another if they are rough than if they are smooth.

The acceleration due to gravity on the planet will be 8g.

Gravity is the force of attraction between objects that is exerted by the masses of those objects. It is the weakest of the four fundamental forces in nature and is most noticeable when two objects of significant mass interact. On Earth, gravity is what keeps us firmly rooted to the ground and is what causes objects to fall when we drop them. It is also what causes the moon to orbit around the Earth and the planets to orbit around the sun.

This is because the acceleration due to gravity is directly proportional to the mass of a body and inversely proportional to the square of its radius. This means that if the mass of a body is doubled and its radius is quadrupled, the acceleration due to gravity will be 8 times the acceleration due to gravity at the Earth.

Therefore, the acceleration due to gravity on the planet will be 8g.

To learn more about gravity
https://brainly.com/question/88039
#SPJ4

The acceleration due to gravity on the planet will be g/8

Gravity is the force of attraction between objects that is exerted by the masses of those objects. It is the weakest of the four fundamental forces in nature and is most noticeable when two objects of significant mass interact. On Earth, gravity is what keeps us firmly rooted to the ground and is what causes objects to fall when we drop them. It is also what causes the moon to orbit around the Earth and the planets to orbit around the sun.

This is because the acceleration due to gravity is directly proportional to the mass of a body and inversely proportional to the square of its radius.

As we know,

Charge (q) = GM/R²

Here, R = radius of the planet

M = mass of the planet

G = Gravitational constant

Now, after putting the values we get:

q = (G × 2me) / (4ve)²

or, q = 1/8 (Gme/ve²)

or, q = 1/8 × g

Therefore, the acceleration due to gravity on the planet will be g/8

To learn more about gravity refer to:

brainly.com/question/88039

#SPJ4