Which two fundamental forces act within an atom’s nucleus? the gravitational force the electromagnetic force the strong nuclear force the weak nuclear force the electric force

Answer:

a = 0.8 [m/s²]

Explanation:

To solve this problem we must use Newton's second law which tells us that the resulting force on a body is equal to the product of mass by acceleration, in this way we come to the following equation:

∑F = m*a

where:

F = forces applied [N]

m = mass = 1000 [kg]

a = acceleration [m/s²]

Now using Newton's second law.

\(1200 - 400 = 1000*a\\800 = 1000 *a\\a=0.8[m/s^{2} ]\)

Answer:

I KNOW

Explanation:

Answer:

The answer is 82 (81.92)

Explanation:                        

1/2(64) x 1.6^2 = 32 * 2.56 =  81.92

Answer:

1.8 kj

Explanation:

Explanation:

A substance's specific heat tells you how much heat is required to increase the mass of

1 g

of that substance by

1

∘

C

.

The equation that establishes a rel;ationship between heat absorbed and change in temperature looks like this

q

=

m

⋅

c

⋅

Δ

T

, where

q

- heat absorbed

m

- the mass of the sample

c

- the specific heat of the substance

Δ

T

- the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample

You have all the information needed to find the amount of heat required to increase the temperature of your sample of mercury by that many degrees Celsius, so just rearange the above equation and solve for

q

q

=

250.0

g

⋅

0.14

J

g

∘

C

⋅

(

62

−

10

)

∘

C

=

1820 J

I'll leave the answer rounded to two sig figs and expressed in kilojoules

q

=

1.8 kJ

Answer Explanation:

A substance's specific heat tells you how much heat is required to increase the mass of

1 g

of that substance by

1

∘

C

.

The equation that establishes a rel;ationship between heat absorbed and change in temperature looks like this

q

=

m

⋅

c

⋅

Δ

T

, where

q

- heat absorbed

m

- the mass of the sample

c

- the specific heat of the substance

Δ

T

- the change in temperature, defined as the difference between the final temperature and the initial temperature of the sample

You have all the information needed to find the amount of heat required to increase the temperature of your sample of mercury by that many degrees Celsius, so just rearange the above equation and solve for

q

q

=

250.0

g

⋅

0.14

J

g

∘

C

⋅

(

62

−

10

)

∘

C

=

1820 J

I'll leave the answer rounded to two sig figs and expressed in kilojoules

q

=

1.8 kJ

Answer link

Answer:

1.8 kj

Explanation:

The common isotope of uranium, 238u, undergoes radioactive decay by alpha emission and has a half-life of 4.47×109 years, which means that after this amount of time has passed, half of the original amount of 238u will have decayed into 234th.

This long half-life makes it useful for dating rocks and determining the age of the Earth. However, it is also a concern for nuclear energy and weapons as it undergoes fission and can release large amounts of energy.

The common isotope of uranium, 238U, has a half-life of 4.47 x 10^9 years. This means that after every 4.47 x 10^9 years, half of the 238U decays to 234Th through a process called alpha emission. In alpha emission, a nucleus releases an alpha particle, which consists of 2 protons and 2 neutrons, thus reducing the atomic number by 2 and the mass number by 4. Therefore, 238U (with atomic number 92) decays to 234Th (with atomic number 90) via alpha emission.

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The coefficient of static friction in this case is 0.26.

To determine the coefficient of static friction, we need to use the following formula

μs = (mv²) / (rmg)

where;

We still need to determine the mass of the car. However, we can use another formula to find the centripetal force acting on the car:

Fc = (mv²) / r

Substituting the given values:

v = 11.3 m/s

r = 3 m

We can rearrange this equation to solve for the mass:

m = Fc r / v²

We don't know the value of Fc, but we can use the fact that the car begins to skid when the centripetal force is equal to the maximum static friction force, which we can express as μsN.

Since the car is on a level surface, the normal force N is equal to the weight of the car:

N = mg

Combining these equations, we get:

μsmg = Fc

Substituting Fc into the equation for the mass:

m = μsmg r / v²

Now we can substitute all the known values:

m = μs (9.8 m/s²) (3 m) / (11.3 m/s)²

Simplifying this expression:

m = 0.78 μs

We still need to find the value of μs. To do this, we can substitute the expression we found for m into the original equation for μs:

μs = (mv²) / (rmg)

μs = (0.78 μs) (11.3 m/s)² / (3 m) (9.8 m/s²)

Simplifying this expression:

μs = 0.26

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The complete question is below:

on a wet day, the car described in the example begins to skid on the curve when its speed reaches 11.3 m/s. what is the coefficient of static friction in this case? hint the radius of the curve is 3 m.

The surface area of the filament is  4.66*10⁻⁴ m².

P = e*σ*A*T⁴

where,

P = radiating energy at a rate

e=  emissivity

σ = Stefan's Constant (5.67 *10⁻8 W/m².K⁴)

A= Surface Area

T = Temperature of the glowing filament (absolute temperature °K)

P = 60 w.

T  = 1500°C+ 273°K

   =1773°K

e= 0.23.

substituting into the equation:

P = e*σ*A*T⁴

60 w = 0.23. * 5.67 *10⁻8 W/m².K⁴ * A * (1773°K)⁴

Making A subject of the formula we have:

A =                  60 w                          

      0.23. * 5.67 *10⁻8 W/m².K⁴ * (1773°K)⁴

A =                             60 w                          

      0.23. * 5.67 *10⁻8 W/m².K⁴ * (9.88*10¹² °K)

A = 4.66 *10⁻⁴ m²

Hence, the surface area is   4.66 *10⁻⁴ m².

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Answer:

a = 70 m/s²

Explanation:

From Newton's second law of motion, we know that when an unbalanced force is applied to an object it produces acceleration in the object in the direction of the force. Therefore,

F = ma

a = F/m

where,

a = rightward acceleration = ?

F = Rightward net force = 700 N

m = Mass of Object = 10 kg

Therefore,

a = 700 N/10 kg

a = 70 m/s²

The earth could not be broken apart by the impactor since it was formed of such light material (mostly gas and liquid).

According to the Giant Impact Hypothesis, which is the most widely accepted theory for how the moon formed, the Earth and a Mars-sized object called Theia collided with each other as they were forming as protoplanets. The moon was created from a large amount of debris. According to this theory, the Moon was created after the Earth collided with a smaller planet that was around Mars' size. The Moon was created when the impact's leftover debris gathered in an orbit around Earth.

The larger body may have caught the iron core of the striking object.

The key to this theory is understanding how consciousness works and harnessing its power for good. By doing so, we can help to manifest positive changes in our world collectively.

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In a first order spectrum produced by a diffraction grating, the end nearest to the central maximum will be the end with the shortest wavelength.

This is because the diffraction grating separates the incoming light into its various wavelengths, with the shortest wavelength (highest frequency) being deflected the least and appearing nearest to the central maximum.

An optical element known as a diffraction grating is made up of several parallel slits or lines that have been etched onto a surface. As it interacts with the slits or lines in the grating, light that passes through it diffracts, or bends. Diffraction orders—a pattern of bright spots divided by dark spaces—are the outcome of this. The wavelength of the diffracted light and the angle of diffraction are both determined by the distance between the slits or lines. In spectroscopy, diffraction gratings are frequently used to divide light into its constituent wavelengths and to gauge the characteristics of various materials. They are also utilised in numerous other fields, including astronomy, laser optics, and telecommunications.

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Answer:

Acceleration=115m/s²

Explanation:

speed=distance/time

23=120/time

/120 on both sides

0.2s is time

acceleration= change in velocity/time taken

23/0.2=115

acceleration=115m/s²

The force that represents the tension force on the box is A because it is in the direction of the attached rope.

Tension is defined as the force transmitted through a rope, string or wire when pulled by forces acting from opposite sides.

Tension force is described as the pulling force transmitted axially by the means of a string, a rope, chain, or similar object, or by each end of a rod, truss member, or similar three-dimensional object.

For the given diagram, the tension force is the force pulling the box upwards preventing downward motion of the box.

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Answer:

Solution: When an ebonite rod is rubbed with fur, fur loses electrons and ebonite rod gains electrons. fur becomes positively charged and rod becomes negatively charged.

Explanation:

HOP3 IT HELP^_^

THANKS^_^

(a) The instantaneous source voltage can be determined by using the given magnitude and phase angle. Since the phase angle is 0°, the instantaneous source voltage can be written as:

V(t) = 277 * cos(2π * 60 * t)

(b) For a 30-Ω resistor, the current entering the positive terminal is the same as the source current. Since the voltage and resistance are given, we can use Ohm's law to determine the current:

I(t) = V(t) / R = (277 * cos(2π * 60 * t)) / 30

(c) For a 15-mH inductor, the phasor current can be determined using the formula:

I = V / jωL

where j is the imaginary unit (√(-1)), ω is the angular frequency (2π * frequency), and L is the inductance. In this case, ω = 2π * 60 and L = 15 * 10^(-3):

I = (277 ∠0°) / (j * 2π * 60 * 15 * 10^(-3))

To find the instantaneous current, we can take the real part of the phasor current and then convert it to the time-domain using cosine function:

I(t) = Re(I * e^(jωt))

(d) For a capacitor with 100 mF, the phasor current can be determined using the formula:

I = jωCV

where C is the capacitance. In this case, ω = 2π * 60 and C = 100 * 10^(-3):

I = (j * 2π * 60 * 100 * 10^(-3)) * 277 ∠0°

To find the instantaneous current, we can take the imaginary part of the phasor current and then convert it to the time-domain using sine function:

I(t) = Im(I * e^(jωt))

Answer:

609547.12 Pa ≈ 6.10×10^5 Pa

Explanation:

Step 1:

Data obtained from the question. This include the following:

Force (F) = 49.8 N

Radius (r) = 0.00510 m

Pressure (P) =..?

Step 2:

Determination of the area of the head of the nail.

The head of a nail is circular in nature. Therefore, the area is given by:

Area (A) = πr²

With the above formula we can obtain the area as follow:

Radius (r) = 0.00510 m

Area (A) =?

A = πr²

A = π x (0.00510)²

A = 8.17×10^-5 m²

Therefore the area of the head of the nail is 8.17×10^-5 m²

Step 3:

Determination of the pressure exerted by the hammer.

This is illustrated below:

Force (F) = 49.8 N

Area (A) = 8.17×10^-5 m²

Pressure (P) =..?

Pressure (P) = Force (F) /Area (A)

P = F/A

P = 49.8/8.17×10^-5

P = 609547.12 N/m²

Now, we shall convert 609547.12 N/m² to Pa.

1 N/m² = 1 Pa

Therefore, 609547.12 N/m² = 609547.12 Pa.

Therefore, the pressure exerted by the hammer on the nail is 609547.12 Pa or 6.10×10^5 Pa

Answer:

609547.12

Explanation:

The frequency is the number of waves that traverse a spot in a specific amount of time.

the quantity of times something happens in a certain amount of time. -the number of waves passing a point per second is the frequency of a wave. - The hertz is a measure of frequency ( Hz ). One event occurs every second in a hertz. Shorter wavelengths will equate to lower frequencies if the speed is remained constant.

The frequency of a wave determines its properties. The quantity of waves that pass through a specific spot in a unit of time is known as frequency. Hertz is the S.I. unit for frequency (Hz).

For instance, if a wave travels through a spot in 0.5 seconds, its frequency will be 1 0.5 = 2 Hz.

As a result, two waves will go through that location in a second.

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Answer:

Specific heat capacity, = 1.2942 J/g°C

Explanation:

Given the following data;

Heat capacity = 685 J

Mass = 7.9 g

Initial temperature = 31°C

Final temperature = 98°C

To find the specific heat capacity of the substance;

Heat capacity is given by the formula;

\( Q = mcdt\)

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt = T2 - T1

dt = 98 - 31

dt = 67°C

Making c the subject of formula, we have;

\( c = \frac {Q}{mdt} \)

Substituting into the equation, we have;

\( c = \frac {685}{7.9*67} \)

\( c = \frac {685}{529.3} \)

Specific heat capacity, = 1.2942 J/g°C

The kinetic energy of the ball the instant it hits the floor is 100J.

Energy is a unit used to describe how much work a body can perform. It cannot be created or gotten rid of. Energy comes in a variety of forms, including thermal, electrical, nuclear, electrical fusion, and electrical. Energy has the capacity to take on different forms.

The ball's potential energy when it is on a shelf is 100 J.

The ball's potential energy from gravity begins to transform into kinetic energy as it begins to fall. Additionally, as the ball falls, its kinetic energy will rise and its potential energy will fall.

The ball's potential energy due to gravity is completely transformed into kinetic energy when it strikes the ground.

Therefore, the ball has 100 J of kinetic energy when it strikes the ground.

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The time it takes Jane to catch up with Don if Jane is traveling at 10 k.p.h and don at 6 k.p.h is: 2.5 h

The formula and procedure we will use to solve this problem is:

Tr = x/(v2-v1)

Where:

Information about the problem:

Applying the reach time formula we get:

Tr = x/(v2-v1)

Tr = 10 km/(10 km/h- 6 km/h)

Tr = 10 km/(4 km/h)

Tr = 2.5 h

It is a physical quantity that indicates the displacement of a mobile per unit of time, it is expressed in units of distance per time, for example (miles/h, km/h).

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The edge counter is 0.0060 meters or 0.60 cm far as they fall from the edge of the counter to the point at which the servers catch them.

Potential energy is a form of stored energy that is dependent on the arrangement of a system's components. When stretched or squeezed, a spring has higher potential energy.

When lifted above the ground, a steel ball has more potential energy than when it is brought to rest on the ground. It is capable of performing more work in the increased position.

From the given data of the question,

x = v/t

t = x/v       (1)

y = -1/2gt²

Substitute value of t from (1)

y = -1/2 g(x/v)²

y = -1/2 (9.8)(0.70/2.0)²

y = 0.0060 meters, or,

y = 0.60 cm.

Therefore, it is 0.60 cm far from the edge of the counter.

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Answer:

A modulation is a voltage, frequency, pulse, or phase change in an analog transmission.

Explanation:

A modulation is a voltage, frequency, pulse, or phase change in an analog transmission. It is a process by which a signal, such as an audio or video signal, is modified in order to be transmitted over a longer distance.

Some key points about modulation include:

- Modulation allows analog signals to be transmitted over long distances without degradation.

- There are several types of modulation, including amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM).

- In AM, the amplitude of the signal is varied in order to carry information.

- In FM, the frequency of the signal is varied in order to carry information.

- In PM, the phase of the signal is varied in order to carry information.

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A modulation is a voltage, frequency, pulse, or phase change in an analog transmission.

Modulation is the process of changing a signal's characteristics to encode information for transmission. In analog transmissions, the signal is continuous and varies in amplitude, frequency, or phase.

Modulation techniques include, amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM), among others. These techniques are used in radio, television, and telephone systems, among others.

The modulation process converts the analog signal into a format that can be transmitted over a channel, such as a wire or radio frequency, and then demodulated at the receiving end to recover the original signal.

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Answer:

Working capital is a fundamental accounting concept essential to running a business. Essentially, working capital is a company's current assets minus its current liabilities. Current assets are typically those that are highly liquid, such as cash or inventory

Explanation:

i

hope it helped...

Answer:

32.32857

Explanation:

Searched on the web

In a moment of Inertia vs r (radius) graph, the units of the coefficient are kilogram per meter squared. This coefficient represents the moment of inertia of a body.

The moment of inertia of a body depends on its mass distribution with respect to the axis of rotation. In other words, it is a measure of an object's resistance to rotational acceleration about an axis.Conditions of equilibrium can be applied to these investigations of a Newton's second of rotation lab by ensuring that the object being rotated is at rest or has a constant angular velocity. For example, if the object is at rest, the sum of the torques acting on the object must be equal to zero. On the other hand, if the object has a constant angular velocity, the sum of the torques acting on the object must be equal to the product of the object's moment of inertia and its angular acceleration. By applying these conditions of equilibrium, one can determine the moment of inertia of a body using rotational motion experiments.

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The net force on the charge at A should be zero, the charge q should be negative, since the charges at B and C are negative. Therefore, the charge q should be -2.25 μC placed at the midpoint M of side BC.

What is Charge?

In physics, charge refers to a fundamental property of matter that describes how it interacts with electric and magnetic fields. All matter is made up of atoms, which in turn are composed of positively charged protons, negatively charged electrons, and neutral neutrons. Charge is carried by the electrons and protons in an atom, and it is measured in coulombs (C).

To keep the charge at point A in equilibrium, the net force on it due to the other charges should be zero. This means that the net force due to charges at B and C should balance each other out.

Let's assume that the charge q is placed at the midpoint M of side BC. We need to find the magnitude and sign of q such that the net force on the charge at A is zero.

Let's first calculate the distance between A and M. Since the triangle is equilateral, all sides are equal to 20 cm.

AM = BC/2 = 10 cm

Now, we can calculate the force on the charge at A due to the charge q at M using Coulomb's law:

F(AM) = k * (2q) / AM^2

where k is the Coulomb's constant.

Similarly, we can calculate the forces on the charge at A due to the charges at B and C:

F(AB) = k * (2 * (-3)) / AB^2

F(AC) = k * (2 * (-3)) / AC^2

Since the triangle is equilateral, AB = AC = 20 cm.

Now, let's consider the x-component of the net force on the charge at A. Since the charges at B and C are symmetrically placed with respect to the y-axis passing through A, the y-component of their forces will cancel out. Therefore, we only need to consider the x-component of their forces:

Fx(net) = F(AM) * cos(60) + F(AB) + F(AC)

where cos(60) = 1/2 is the cosine of the angle between the vectors AM and F(AM).

Since the net force on the charge at A should be zero, we have:

Fx(net) = 0

Substituting the values of F(AM), F(AB), F(AC), and cos(60), we get:

k * (2q) / AM^2 - k * 6 / AB^2 - k * 6 / AC^2 = 0

Simplifying this equation, we get:

2q = 9/2

Therefore, the magnitude of the charge q that needs to be placed at the midpoint M of side BC is:

|q| = 9/4 = 2.25

Since the net force on the charge at A should be zero, the charge q should be negative, since the charges at B and C are negative. Therefore, the charge q should be -2.25 μC placed at the midpoint M of side BC.

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Sara pushed a box of lab equipment along the ground, displacing it by 1 meter. she has done work on the box of lab equipment.

When a force is applied and an object is moved over a specified distance, a work has been completed. The following formula is used to calculate an object's work,

W = Fd

Where, F is the applied force, and d is the object's displacement.

Therefore ,Sara has therefore completed her work on the box of lab equipment when she moves it by 1 m.

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The solubility of the sample will decrease