what is force. what is a net force

Answer:

2,500 watts

Explanation:

I got this answer right on a test. I hope it works for you to.

Answer:

2500 wats

Explanation:

During a star's main-sequence stage, the primary process through which energy is generated in the star's core is

a: Hydrogen fuses into helium.

This process, known as nuclear fusion, occurs under the extreme temperatures and pressures in the star's core. The fusion of hydrogen nuclei (protons) combines to form helium nuclei, releasing a tremendous amount of energy in the form of light and heat. This energy production sustains the star's luminosity and keeps it stable during the main-sequence phase.

In the context of energy production on Earth, scientists and engineers have been working for many years to develop practical and controlled nuclear fusion as a potential source of clean and abundant energy. The main objective is to create a fusion reaction that produces more energy than is required to initiate and sustain the reaction.

The most widely studied approach to achieving controlled fusion is through a plasma state of matter, where fuel consisting of isotopes of hydrogen, such as deuterium and tritium, is heated to extremely high temperatures to form a plasma. Under these conditions, the atomic nuclei overcome their mutual repulsion and can collide with sufficient energy to overcome the electrostatic forces and fuse together.

To know more about star's main-sequence stage, visit

https://brainly.com/question/61240

#SPJ11

The sound pressure ratio is 10¹⁰

A decibel is a unit of sound pressure level. It can be determined as

LP = log( P / Po )²

where LP is sound pressure level (dB), P is sound pressure (N/m²) and Po is reference sound pressure (N/m²).

From the question above, we know that :

LP1 = 80 dB

LP2 = 100 dB

Po is same

To determine the sound pressure ratio we can use the sound pressure level equation:

LP1 = log( P1 / Po )²

80 = log( P1 / Po )²

log( 10 )⁸⁰ = log( P1 / Po )²

10⁸⁰ = ( P1 / Po )²

P1/Po = 10⁴⁰ ........................... (1)

LP2 = log( P2 / Po )²

100 = log( P2 / Po )²

log( 10 )¹⁰⁰ = log( P2 / Po )²

10¹⁰⁰ = ( P2 / Po )²

P2/Po = 10⁵⁰ ........................... (2)

Hence, we can determine the ratio of sound pressure

P2 / P1 = 10⁵⁰.Po /  10⁴⁰.Po

P2/P1 = 10¹⁰

Thus, the sound pressure ratio is 10¹⁰.

Find more on sound pressure at: https://brainly.com/question/24039741

#SPJ4

Answer:

Environmental Protection Agency (EPA)

Explanation:

In the United States of America, the agency which was established by US Congress and saddled with the responsibility of overseeing all aspects of pollution, environmental clean up, pesticide use, contamination, natural resources and hazardous waste spills is the Environmental Protection Agency (EPA). Also, EPA research solutions, policy development, and enforcement of regulations through the resource Conservation and Recovery Act.

The Environmental Protection Agency (EPA) is the governmental agency set up to ensure that various industries, factories and people comply with laws and regulations concerning the environment i.e it is an agency established to oversee and enforce environmental compliance by the people.

Hence, the Environmental Protection Agency (EPA) is saddled with the responsibility of enforcing federal and state laws related to environmental and natural resources.

One statement that is not true is that UV radiation is a type of electromagnetic radiation. It is also a type of ionizing radiation. UV radiation is actually a form of non-ionizing radiation.

UV radiation, or ultraviolet radiation, is a type of electromagnetic radiation that falls between visible light and X-rays on the electromagnetic spectrum. It is often categorized into three types: UVA, UVB, and UVC. Unlike ionizing radiation, such as X-rays and gamma rays, which have enough energy to remove tightly bound electrons from atoms or molecules, UV radiation lacks the necessary energy to ionize atoms or molecules. Instead, it primarily interacts with the outermost electrons of atoms or molecules, leading to chemical reactions and causing biological effects.

UV radiation is commonly associated with sunlight and has various effects on living organisms and materials. It can cause sunburn, premature aging of the skin, and an increased risk of skin cancer. Exposure to excessive UV radiation can also damage the eyes and impair the immune system. It is important to protect oneself from excessive UV exposure by wearing sunscreen, protective clothing, and sunglasses.

Learn more about UV radiation here:

https://brainly.com/question/4144192

#SPJ11

The term refers to how loud or soft a sound will be wavelength. Then the correct option is A.

In physics, math, and related fields, a wave is a dynamic disturbance of one or more variables that spreads. Waves are referred to as periodic when they oscillate repeatedly around an equilibrium value at a specific frequency.

The wave can be represented as,

f(x) = A sin (ωt + ∅)

Where 'A' is the amplitude, 'ω' is the frequency, 't' is the time period, and '∅' is the phase difference.

Depending on the medium that it is moving through, sound has a wide range of speeds. The stiffness of the medium (or compressibility in the case of gases) and its density work together to define the speed of sound in that medium. The speed of sound increases with the rigidity (or lack of compressibility) of the medium.

If the amplitude is high then the voice is loud. Similarly, if the amplitude is low then the voice is soft.

The wave

The phrase describes a sound's wavelength, or how loud or soft it will be. Then, choice A is the best one.

More about the waves link is given below.

https://brainly.com/question/3639648

#SPJ6

Answer:

V = -0.4 m/s

Explanation:

Given that,

Mass of cart 1, m₁ = 3 kg

Speed of cart 1, v₁ = 2 m/s

Mass of cart 2, m₂ = 2 kg

Speed of cart 2, v₂ = -4 m/s (left)

aWe need to find the velocity of the carts after the collision if they stick together. Let the common speed be V. Using the law of conservation of momentum to find it such that,

\(m_1v_1+m_2v_2=(m_1+m_2)V\\\\V=\dfrac{m_1v_1+m_2v_2}{(m_1+m_2)}\)

Put all the values,

\(V=\dfrac{3\times 2+2\times (-4)}{(3+2)}\\\\=-0.4\ m/s\)

So, the velocity of the carts after the collision is equal to 0.4 m/s to the left.

The force diagram of the given situation is shown below:

As you can notice, force due to the friction of the box with the flat surface is opposite to the applied force.

The resistance of a wire with a 1.6 mm diameter and 20 m length made of the same material is 3.14×10⁻⁷Ω−m.

Electrical resistance of a conductor with a unit cross-sectional area and unit length is called resistivity. Resistivity is a distinctive attribute of any material that may be used to compare different materials based on how well they conduct electric currents. Low conductivity is indicated by high resistance.

Given,

l= 10m= 1000mm

d= 2mm

∴radius(r)= 20.2 =0.1mm

R=10Ω

To find,

Resistivity(ρ)

ρ=R /l A

​where,

R= Resistance

l= Length of wire

A= Cross sectional area of wire

Cross sectional area of cylinder (A)=Πr²

A= π×(0.1)²

A=0.0314mm²

ρ=10(10000.0341)

ρ=0.000314Ω−mm

ρ≃3.14×10⁻⁷Ω−m

So, the resistivity of the material is equal to 3.14×10⁻⁷Ω−m.

To know more about resistivity, visit-

https://brainly.com/question/17562635

#SPJ4

The induced EMF in the Loop of the Antenna due to oscillating magnetic field is -0.207 Volts.

We know,

The EMF induced = -(The rate of change of magnetic flux with time)

E = -d(MA)/dt

Here,

E is the induced emf,

M is the magnetic field,

A is the area of the loop.

As we can see, area is constant,

E = -AdM/dt

The value of M is 24sin(ωt).

So, putting the value of M,

E = -Ad(24sin(ωt))/dt

E = -A(24ωcos(ωt))

We know,

ω = 2πf

where

f is the frequency,

Now, we can write,

For maximum emf, cos(ωt) = 1,

So, E = -(A.24.2πf)

So, finally,

E = -πr².24.2πf

where, r is the radius of the loop,

The value of frequency f is 170MHz and,

the value of r is 25cm, 0.25 in meters,

Putting all the values,

E = 3.14 x 0.25 x 0.25 x 24 x 2 x 3.14 x 170 x 10⁶

E = -209.51 x 10⁶ nV.

1 nV = 10⁻⁹V

so,

E = -209.51 x 10⁶ x 10⁻⁹ V

E = -0.209 V

So, the induced EMF is -0.207 V.

To know more about Induced EMF, visit,

https://brainly.com/question/17329842

#SPJ9

Complete Question - A loop antenna, such as is used on older televisions to pick up UHF broadcasts, is 25 cm in diameter. The plane of the loop is perpendicular to the oscillating magnetic field of a 170 MHz electromagnetic wave. The magnetic field in (nT) through the loop is 24sin(ωt), where ω is the angular frequency of the wave. What is the maximum emf induced in the antenna?

Explanation:

100 m / (1.20 m) = 83.3

100 m / (0.75 m) = 133.3

Rounded up, the first sprinter takes 84 steps, and the second sprinter takes 134 steps.

Answer:

Aerobic exercise reduces the risk of many conditions, including obesity, heart disease, high blood pressure, type 2 diabetes, metabolic syndrome, stroke and certain types of cancer. Weight-bearing aerobic exercises, such as walking, help decrease the risk of osteoporosis.

Answer:

reduced heart attack chance

Explanation:

cholestrol buildups get destroyed by high pressure blood

uwu

Answer:

a) 1.6*10^6 V

b) 13.35*10^6 V

Explanation:

The electric potential at origin is the sum of the contribution of the two charges. You use the following formula:

\(V=k\frac{q_1}{r_1}+k\frac{q_2}{r_2}\)    (1)

q1 = 3.90µC = 3.90*10^-6 C

q2 = -2.4µC = -2.4*10^-6 C

r1 = 1.25 cm = 0.0125 m

r2 = -1.80 cm = -0.018 m

k: Coulomb's constant = 8.98*10^9 Nm^2/C^2

You replace all the parameters in the equation (1):

\(V=k[\frac{q_1}{r_1}+\frac{q_2}{r_2}]\\\\V=(8.98*10^9Nm^2/C^2)[\frac{3.90*10^{-6}C}{0.0125m}+\frac{-2.4*10^{-6}C}{0.018m}]=1.6*10^6V\)

hence, the total electric potential is approximately 1.6*10^6 V

b) For the coordinate (1.50 cm , 0) = (0.015 m, 0) you have:

r1 = 0.0150m - 0.0125m = 0.0025m

r2= 0.015m + 0.018m = 0.033m

Then, you replace in the equation (1):

\(V=(8.98*10^9Nm^2/C^2)[\frac{3.90*10^{-6}C}{0.0025m}+\frac{-2.4*10^{-6}C}{0.033m}]=13.35*10^6V\)

hence, for y = 1.50cm you obtain V = 13.35*10^6 V

(a) Velocity is zero (b) the time is 0.918 sec (c) the time is 1.836 sec (d) the distance is 14.688 m  (e) the angle in degree is 0 degree.

a) When the ball reaches its maximum height, its velocity is entirely in the vertical direction (y-axis) and has no horizontal component (x-axis or z-axis). The velocity vector at this point is <0, vy, 0>, where vy is the vertical component of velocity.

b) To find t when the ball reaches its maximum height, we can set the vertical component of velocity vy = 0, and use the equation of motion for vertical motion:

vy = v0y - gt

where v0y = 9m/s is the initial vertical velocity, g = 9.8 m/s^2 is the acceleration due to gravity, and t is the time since the ball was thrown.

0 = 9 - 9.8t

t = 9/9.8 = 0.918 s

c) The time t when the ball's height y returns to zero can be found by setting y = 0 in the equation of motion for vertical motion:

y = v0y x t - (1/2) x g x t^2

0 = 9t - 4.9t^2

4.9t^2 = 9t

t = 9/4.9 = 1.836 s

d) At the time calculated in part (c), when the ball's height y returns to zero, the range of the trajectory (x) can be found by using the equation of motion for horizontal motion:

x = v0x x t

x = 8 x 1.836 = 14.688 m

e) The angle in degrees with respect to the positive x-axis of the velocity at the time calculated in part (c) is found by using the horizontal component of the velocity vector.

The horizontal component of the velocity vector is vx = 8 m/s.

The angle of the velocity vector with respect to the positive x-axis is found by using the arctangent function.

angle = a tan(vy/vx) = a tan(0/8) = 0 degrees.

It's important to note that the range is the maximum distance that the ball travels horizontally, and it is reached at the time when the ball's height y returns to zero.

To know more about velocity please refer: https://brainly.com/question/18084516

#SPJ4

Question - A small dense ball with mass 0.9 kg is thrown with initial velocity <8,9,0>m/s at time =0 from a location we choose to call the origin (<0,0,0>m). Air resistance is negligible.

(a) When the ball reaches its maximum height, what is its velocity?

(b) When the ball reaches its maximum height, what is time ?

(c) At a later time the ball's height  has returned to zero, which means that the arithmetic average value of  from =0 to this time is zero. At this instant, what is the time ?

(d) At the time calculated in part (c), when the ball's height  returns to zero, what is distance? (This is called the range of the trajectory.)

(e) What is the angle in degrees with respect to the positive x-axis of the velocity at the time calculated in part (c)? Present your answer as a positive value less than 360.

Answer:

Speed of Skater = 8.16 m/s

Explanation:

Using kinetic energy:

\(M_{t} = M_{skater} + m_{ball}\\\frac{1}{2}M_{t}V_{i}^2 = \frac{1}{2}*M*V_{s} ^2+\frac{1}{2}*m*V_{b}^2\\ M_{t}V_{i}^2 = M_{s}*V_{s} ^2+m_{b}*V_{b}^2\\M_{t}V_{i}^2-m_{b}*V_{b}^2 = M_{s}*V_{s} ^2\\(M_{t}V_{i}^2-m_{b}*V_{b}^2)/M_{s} = V_{s} ^2\\V_{s} = \sqrt{\frac{(M_{t}V_{i}^2-m_{b}*V_{b}^2)}{M_{s}} } \\\)

This gives the skater a velocity of 8.16 m/s after throwing the ball

Answer:

Explanation:

operantly conditioned; positively reinforced

The product of the magnitudes of the charges and the square of the distance between them determines the magnitude of the electrostatic force F between two point charges, q1 and q2, and vice versa.

The magnetic field B and the charge q's velocity v are both perpendicular to the force. F = qvB sin, where is the angle of 180 degrees between the velocity and magnetic field, gives the force's magnitude.

The product of the magnitudes of the charges and the square of the distance between them determines the magnitude of the electrostatic force F between two point charges, q1 and q2, and vice versa.

To know more about electric force visit :

https://brainly.com/question/2526815

#SPJ4

When an atom changes by alpha decay, its atomic number decreases because of the losing of proton and neutron.

An alpha particles is a helium nucleus that contains 2 protons and 2 neutrons. When the alpha decay occur, the atom loses an alpha particle which causes the loss of proton and neutron thus decreases the mass number as well as atomic number occur.

So we can conclude that When an atom changes by alpha decay, its atomic number decreases because of the losing of proton and neutron.

Learn more about atom here: https://brainly.com/question/6258301

#SPJ1

Answer:

589.3 g is the answer

Explanation:

Answer:

The answer for this would be 589.3g

Answer:

b ac power source

Explanation:

ieififuffucjcjcicogore8e8e9e9e9e9ew0ww0w0w

Answer:  B.

switch

Explanation: edmentum

To have a complete understanding of the diffraction pattern and the conditions required for the third bright bands to be missing, you will need to determine the values for λ and L in order to proceed further with your calculations. Once you have these values, you can rearrange the equations to solve for the slit width (a).

1. The bright bands are 1.05 cm apart.
2. The third bright bands on either side of the central maximum are missing.

This situation occurs in a single-slit diffraction pattern. To analyze this, we can use the following equation for the positions of the minima in a single-slit diffraction pattern:

sin(θ) = m * (λ / a)

Where:
- θ is the angle between the central maximum and the missing band
- m is an integer representing the order of the missing band (in this case, m = 3 since the third band is missing)
- λ is the wavelength of the light
- a is the slit width

Since we're given the distance between bright bands (1.05 cm), we can use this information to find the angle θ. For a small angle approximation, we can use the equation:

y = L * tan(θ) ≈ L * sin(θ)

Where:
- y is the distance between the bright bands (1.05 cm)
- L is the distance from the slit to the screen

You will need to determine the values for λ and L in order to proceed further with your calculations. Once you have these values, you can rearrange the equations to solve for the slit width (a). Then you will have a complete understanding of the diffraction pattern and the conditions required for the third bright bands to be missing.

More on diffraction: https://brainly.com/question/13063479

#SPJ11

The best answer is: They are very small yet they contain hundreds of millions of solid-state components.

Integrated circuits are used in mobile phones primarily because they offer the advantage of being very small while containing a vast number of solid-state components. Integrated circuits, also known as microchips, are miniaturized electronic circuits that are etched onto a small semiconductor material.

The compact size of integrated circuits allows for their integration into mobile phones, where space is limited. Despite their small size, integrated circuits can contain hundreds of millions of components, including transistors, resistors, and capacitors, which enable the complex functionalities required in modern mobile phones.

This combination of small size and high component density makes integrated circuits the ideal choice for mobile phone technology.

To learn more about integrated circuits click here: brainly.com/question/14788296

#SPJ11

We will have that the picture that shows the highest average kinetic energy is image B.

The velocity of the combined weight at rest following the collision. 15 m/sec.

The amount of material that makes up every object and body is the simplest method for comprehending mass. Everything that we can see has mass. Examples of objects with mass include a desk, a seat, your mattress, a football, a glass, or even air. The mass of a thing determines whether it is light or heavy.

A measure of how much matter is present in or makes up a physical body. In classical mechanics, an object's mass is crucial to Newton's motion laws because it influences the force needed to accelerate it and, consequently, how much inertia it has.

To know more about Mass visit:

https://brainly.com/question/11954533

#SPJ4

Answer:

Electrons = 11

Explanation:

The amount of protons is = to the amount of electrons

Answer:

Yes

Explanation:

Inside the egg are a series of fluid-filled membranes that permit the embryo to survive: the amnion, allantois, yolk sac, and chorion. Around the chorion is the albumin or "white" of the egg, and an outer shell protects the whole egg, preventing drying while still permitting air to reach the embryo.

The diagram will help you below:

The particles in Figure 22.46 exhibit signs of both positive and negative charges.

In Figure 22.46, the presence of both positive and negative charges can be inferred based on the observed behavior of the particles. The interaction between charged particles can be explained through the principles of electrostatics. When two particles carry the same type of charge, they repel each other, while particles with opposite charges attract each other.

By observing the behavior of the particles in Figure 22.46, we can identify the signs of their charges. For instance, if two particles move away from each other or repel each other, it indicates that they possess the same charge. This behavior is characteristic of particles with either positive or negative charges.

Conversely, if two particles move closer together or attract each other, it suggests that they possess opposite charges. This behavior is indicative of particles with opposing charges, where one carries a positive charge and the other carries a negative charge.

It's important to note that the exact nature of the charges cannot be determined solely based on the behavior of the particles in Figure 22.46. Further information or experimental data would be required to ascertain whether the charges are positive or negative. Nevertheless, the observed repulsion and attraction between the particles provide clear indications of the presence of both positive and negative charges.

Learn more about Particles

brainly.com/question/13874021

#SPJ11