Friction is a force in which two objects __________. A. Collide and move in one direction B. Are repelled from each other C. Slide against each other D. Are attracted from a distance Please select the best answer from the choices provided. A B C D.

Answer:

the thin steel wall because that wall is so very to fast broke

Answer:

None of the options are correct.

Explanation:

Let \(V_x\) be the initial horizontal velocity of the golf ball t be the time of flight.

The time of flight, t, is the time taken by the ball to touch the ground. The ball falls towards earth due to gravitational force which acts vertically downward, so, the horizontal velocity of the ball remains unchanged.

As the horizontal distance covered by the ball is 18 m,

As distance = speed x time, so

\(V_x t = 18\cdots(i)\)

Now, by using the equation of motion in the gravitational field,

\(s=ut+\frac 12 g t ^2\)

Here, u is the initial velocity in the vertical direction, s is the displacement traveled in time t, g=9.81 is the acceleration due to gravity.

Here, we have u=0, s=20 m (height of the cliff), \(g=9.81 m/s^2\).

\(\Rightarrow 20=0\times t +\frac 12 (9.81)t^2\)

\(\Rightarrow t^2= \frac {20\times 2}{9.81}\)

\(\Rightarrow t= \sqrt{\frac {40}{9.81}}\)

\(\Rightarrow t=2\) seconds  (approx)

From equation (i), e have

\(V_x\times 2=18\)

\(\Rightarrow V_x=18/2=9\) m/s.

So, the initial velocity of the ball is 9m/s in the hprizontal diection.

Hence, none of the options are correct.

The type of galaxy that is likely to contain both O-spectral type stars, as well as M-spectral type stars is a spiral galaxy.

Spiral galaxies have a central bulge and arms that spiral outwards, and they contain a wide range of stellar populations, including both young, hot O-type stars and older, cooler M-type stars.

This diversity of stars is due to the ongoing process of star formation within spiral galaxies, which occurs in regions of gas and dust within the galaxy's arms.

A spiral galaxy is likely to contain both O-spectral type stars and M-spectral type stars. O-type stars, which are massive and hot, can be found in the spiral arms where star formation actively occurs.

M-type stars, which are cooler and less massive, can be found in both the spiral arms and the central bulge, as they have longer lifespans.

Visit here to learn more about Galaxy:

brainly.com/question/17117676

#SPJ11

The two subfields of psychology that are similar and involve diagnosing and treating mental disorders are Clinical psychology and the Counseling psychology. Therefore, the correct answer is:  C).

Clinical psychology and Counseling psychology. Both of these subfields involve the assessment, diagnosis, and treatment of mental health disorders, although they may differ in their focus and approach. Clinical psychology tends to the focus on more severe mental health issues, such as schizophrenia and the bipolar disorder, while Counseling psychology tends to focus on a wider range of issues, such as stress management, relationship problems, and career counseling. Hence correct answer is : C) .

To know more about Clinical psychology, here

brainly.com/question/15401191

#SPJ4

(a) The direction of the electric field is opposite to the electron's initial velocity.

(b) The electron travels approximately 6.30 meters before coming to rest.

(c) It takes approximately 11.79 seconds for the electron to come to rest.

(d) The electron's speed when it returns to its starting point is 5.48 × 10^6 m/s.

(a) The direction of the electric field is opposite to the electron's initial velocity.

(b) To determine the distance traveled by the electron before coming to rest, we can use the equation of motion for uniformly accelerated motion:

v² = u² + 2as

where:

v is the final velocity (0 m/s since the electron comes to rest),

u is the initial velocity of the electron (5.48 × 10⁶ m/s),

a is the acceleration of the electron (caused by the electric field), and

s is the distance traveled by the electron.

Rearranging the equation, we have:

s = (v² - u²) / (2a)

Substituting the given values:

v = 0 m/s

u = 5.48 × 10⁶ m/s

a = -4.64 × 10^5 N/C (negative because the acceleration is opposite to the initial velocity)

s = (0² - (5.48 × 10⁶)²) / (2 × -4.64 × 10^5)

s ≈ 6.30 m

Therefore, the electron travels approximately 6.30 meters before coming to rest.

(c) To find the time it takes for the electron to come to rest, we can use the equation of motion:

v = u + at

where:

v is the final velocity (0 m/s),

u is the initial velocity of the electron (5.48 × 10⁶ m/s),

a is the acceleration of the electron (caused by the electric field), and

t is the time.

Rearranging the equation, we have:

t = (v - u) / a

Substituting the given values:

v = 0 m/s

u = 5.48 × 10⁶ m/s

a = -4.64 × 10⁵ N/C (negative because the acceleration is opposite to the initial velocity)

t = (0 - (5.48 × 10⁶)) / (-4.64 × 10⁵)

t ≈ 11.79 s

Therefore, it takes approximately 11.79 seconds for the electron to come to rest.

(d) The speed of the electron when it returns to its starting point is equal to its initial speed, which is 5.48 × 10⁶ m/s.

Therefore, the electron's speed when it returns to its starting point is 5.48 × 10⁶ m/s.

Read more about electric field here: https://brainly.com/question/19878202

#SPJ11

The Electric Potential at a point P for a thin rod with uniform charge density is equal to 50230.4 V.

Electric Potential is referred to as the total amount of work that is done by any external element to bring a unit positive charge from infinity to a point where the influence of potential can be felt. The electric potential due to a point charge is represented by

\(V = k\frac{q}{r}\)

where V is the electric potential, k is Coulomb's constant which is equal to 9×10⁹ N m²/C², q is the charge and r is the distance.

Now, the Electric potential due to a small element dx at a distance d is given by

\(dV = k\frac{\alpha dx}{r}\\dV = k\frac{\alpha dx}{\sqrt{d^2 + x^2}}} \\dV = k\frac{\alpha dx}{\sqrt{D^2 + x^2}}} \\\)

where k is coulomb's constant, α is the charge density.

Now the total electric potential at point P is

\(V = \int\limits^L_D \, dV \\V = \int\limits^{5D}_D \, k\frac{\lambda dx}{\sqrt{D^2 + x^2}}} \\\\V = k \lambda \int\limits^{5D}_D \, \frac{\ dx}{\sqrt{D^2 + x^2}}} \\\\ \\V = k\lambda[ln(\sqrt{D^2 + x^2} + x)]\limits^{5D}_D\\\)

V = (9×10⁹)(3.90×10⁻⁶) ln {(5 + √26)/(1 + √2)}

V = 50230.4 V which is the required potential.

Learn more about Electric potential at:

brainly.com/question/28168672

#SPJ4

Answer:

15kg

Explanation:

mass = weight / gravitational field strength

mass = 150 / 9.8 = 15kg (nearest whole no)

The mass of the object on earth whose weight is 150 N will be 15.3 Kg

Mass is the amount of matter present inside a body. It is defined as the product of density and volume. It remains constant through out the universe. Mathematically -

M = ρV

where -

M is Mass

ρ is density

V is volume

Given is your weight on earth which is equivalent to 150 N.

We know that the weight of of an object is a force exerted by the earth towards its center. It can be written as -

W = mg

Weight of the object = [W] = 150 N

Acceleration due to gravity on earth = [g] = 9.8 m/s²

Substituting the values -

150 = m x 9.8

m = 150/9.8

m = 15.3 Kg

Therefore, the mass of the object on earth whose weight is 150 N will be 15.3 Kg.

To solve more questions on Mass and weight, visit the link below-

https://brainly.com/question/1444711

#SPJ2

The angle θ for connecting member a to the plate so that the resultant of f a fa and f b fb is directed along the positive x axis are:

Fa=8sin54.93 in x direction

Fb=6sin40 in x direction

Resultant=10.4

The term magnitude is defined as the “how much of a quantity”. For instance, magnitude can be used for explaining the comparison between the speeds of a car and a bicycle. It can also be used to explain distance travelled by an object or to explain the amount of an object in terms of its magnitude.

In Physics, magnitude is defined as maximum extent of the size and the direction of an object. Magnitude is used as a common factor in the vector and scalar quantities. By definition, we know that the scalar quantities are those quantities that have magnitude only. Whereas the vector quantities are those quantities that have both magnitude and direction.

There are the different ways in which magnitude can be used. Some of them are:

The magnitude of a number, unlike magnitude of a physical quantity, is not relative to a scale or set of units: the magnitude of 100 is 100. By contrast, magnitude of a ruler is 12 in inches but is 30.48 in centimeters. Outside of the pure mathematics one has to be careful to specify the units in which the magnitude of some quantity is measured.

Therefore magnitude of resultant is:

=\(\sqrt{8sin54+936sin40}\)

=10.4

To know more about force visit: https://brainly.com/question/13191643

#SPJ4

If two objects are experiencing the same amount of force, the accelerations are not necessarily the same.

From Newton's second law,

we have F=ma,

where F is the force acting on the body, m is the mass and a is the acceleration of the body respectively.

Thus, the force of an object depends on both  mass and acceleration. Hence, if the two objects experiencing the same amount of force have unequal masses, then they'll have unequal accelerations. For example, if the force experienced by a golf head and a golf ball are the same, the golf ball experiences greater acceleration due to its smaller mass. Thus if the two objects are experiencing the same amount of force, then the lighter object among the two experiences greater acceleration.

On the other hand, if the two objects experiencing the same amount of force are of equal mass, then both will experience the same amount of acceleration.

To learn more about equal forces visit https://brainly.com/question/2239954

The action-reaction pairs in the given situation are:

Action-reaction pairs are two forces which are equal but oppositely directed in their line of action.

Action-reaction pairs are according to Newton's third law of motion.

The action-reaction pairs in the given situation are:

Learn more about action-reaction pairs at: https://brainly.com/question/12800382

#SPJ1

Answer:

this is very true

Explanation:

I I should know I'm a tea fanatic

Answer:

sowi d ko po knows hehe need ko lang po ng points

Explanation:

hope u understand

Vega has an apparent magnitude of 0.03 and an absolute magnitude of 0.58. It it was moved twice as far from Earth as it is now, its absolute magnitude number would increase This statement is. True.

Vega is a star, and its apparent magnitude of 0.03 indicates that it is one of the brightest stars visible from Earth. Its absolute magnitude of 0.58 is a measure of its intrinsic brightness, or how bright it would appear if it were located at a standard distance of 10 parsecs from Earth. If Vega were moved twice as far away from Earth, its distance from Earth would be four times greater, and its absolute magnitude would increase because its brightness would be spread out over a larger area. Therefore, it is true that if Vega were moved twice as far from Earth as it is now, its absolute magnitude number would increase.

Vega's apparent magnitude of 0.03 and absolute magnitude of 0.58 are indications of its brightness and intrinsic brightness, respectively. If Vega were moved twice as far from Earth as it is now, its absolute magnitude number would increase. This is because the distance from Earth would be four times greater, and the brightness of Vega would be spread out over a larger area. Therefore, Vega's intrinsic brightness would appear to decrease, resulting in a higher absolute magnitude.

Therefore, the statement that Vega's absolute magnitude number would increase if it were moved twice as far from Earth as it is now is true.

To know more about magnitude visit:

brainly.com/question/31022175

#SPJ11

Mass of pig,

m=430 kg

Length of hill,

L=100m

Vertical drop,

h=37.4 m

By the law of conservation of mechanical energy we have

m(g)h=1/2mv²

417×9.8×37.4=0.5×417v²

v=27.1m/s

What is energy?

Increase your consumption of foods that will help you build more muscle and stronger bones. Common types of energy include the kinetic energy of a moving object, potential energy stored by an object (for instance because of its location in a field), elastic energy present in solid objects, chemical energy linked to chemical reactions, radiant energy carried by electromagnetic radiation, and internal energy present within a thermodynamic system.

All living things constantly use and expend energy. Any stationary object that has mass (referred to as rest mass) also has an equivalent amount of energy (referred to as rest energy), as well as any additional energy. This is referred to as mass-energy equivalence.

To know more about the energy, click the link given below:

https://brainly.com/question/1932868

#SPJ1

The wind direction changed from morning to night because  land and water absorbing solar energy unequally.

Convection is said to occur when there is heat transfer by an actual movement of participles from place to place. The movement of air mass (wind) is affected by the relative amounts of solar energy absorbed by the land and sea.

Hence, the wind direction changed from morning to night because  land and water absorbing solar energy unequally.

Learn more about convection current: https://brainly.com/question/12841408

Answer:

Height of wall (Perpendicular) = 11.31 ft (Approx)

Explanation:

Given:

Base Distance (Base) = 4 feet

Height of ladder (Hypotenuse) = 12 feet

Find:

Height of wall (Perpendicular)

Computation:

Perpendicular = √Hypotenuse² - Base²

Height of wall (Perpendicular) = √12² - 4²

Height of wall (Perpendicular) = √144 - 16

Height of wall (Perpendicular) = √128

Height of wall (Perpendicular) = 11.31 ft (Approx)

The statement that is true concerning the motion of an ideal projectile launched at an angle of 45 degrees to the horizontal is that the horizontal and vertical components of its velocity are equal.

When a projectile is launched at an angle of 45 degrees to the horizontal, its initial velocity can be resolved into two components: the horizontal component and the vertical component. The horizontal component remains constant throughout the motion because there is no horizontal acceleration acting on the projectile. The vertical component, on the other hand, is affected by the force of gravity and changes over time.

Since the angle of launch is 45 degrees, the initial velocity is equally divided between the horizontal and vertical components. This means that the magnitude of the horizontal component of velocity is equal to the magnitude of the vertical component of velocity. As the projectile travels, the vertical component of velocity decreases due to the effect of gravity, while the horizontal component remains constant.

The equality of the horizontal and vertical components of velocity at the launch angle of 45 degrees has important implications for the trajectory of the projectile. It results in the maximum range for a given initial velocity since the horizontal velocity remains unchanged throughout the motion. Additionally, the time of flight and the maximum height reached by the projectile can be determined based on the equal components of velocity.

To learn more about projectile refer:

https://brainly.com/question/30827330

#SPJ11

The statement that is true concerning the motion of an ideal projectile launched at an angle of 45 degrees to the horizontal is that the horizontal and vertical components of its velocity are equal.

When a projectile is launched at an angle of 45 degrees to the horizontal, its initial velocity can be resolved into two components: the horizontal component and the vertical component. The horizontal component remains constant throughout the motion because there is no horizontal acceleration acting on the projectile. The vertical component, on the other hand, is affected by the force of gravity and changes over time.

Since the angle of launch is 45 degrees, the initial velocity is equally divided between the horizontal and vertical components. This means that the magnitude of the horizontal component of velocity is equal to the magnitude of the vertical component of velocity. As the projectile travels, the vertical component of velocity decreases due to the effect of gravity, while the horizontal component remains constant.

The equality of the horizontal and vertical components of velocity at the launch angle of 45 degrees has important implications for the trajectory of the projectile. It results in the maximum range for a given initial velocity since the horizontal velocity remains unchanged throughout the motion. Additionally, the time of flight and the maximum height reached by the projectile can be determined based on the equal components of velocity.

To learn more about projectile refer:

brainly.com/question/30827330

#SPJ11

English:

The piece of plastic most likely cooled.

/

Español:

Lo más probable es que la pieza de plástico se haya enfriado.

Answer:

a = -1.2 m/s^2

Explanation:

Vi = 12 m/s

Vf = 0 m/s

t = 10 s

Plug those values into the following equation:

Vf = Vi + at

0 = 12 + 10a

---> a = -1.2 m/s^2

The electric field at a distance of 10 cm from an isolated point particle with a charge of 2 x 10–9 c is 1.8×10³N/C.

When the charge is present in any form, an electric field is linked with each point in space. The value of E, also known as electric field strength, electric field intensity, or simply the electric field, expresses the magnitude and direction of the electric field.

The electric field is formally defined as a vector field associated with each location in space, the force per unit charge exerted on a positive test charge at rest at that point. The electric charge or time-varying magnetic fields generate the electric field. The magnitude of the electric field produced by a point charge Q is given by this equation.

To learn more about electric field please visit -
https://brainly.com/question/15800304
#SPJ4

Answer:

Chemical energy (Also considered potential energy)

Explanation:

Oil is a compound.

The species which contain more than one element is called compound. Oil is a mixture of many elements like liquid hydrocarbons, oxygen, nitrogen, sulphur, hydrogen gas etc. This elements form a large variety of structure.

Answer:

compound I believe

Explanation:

Many elements are present in the oil, such as liquid hydrocarbons, oxygen, nitrogen, sulfur, hydrogen gas, etc. These elements have many different structures.

Answer:

The more displacement that is given to the first coil, the more amplitude that it will have. So in the end, the amplitude of a transverse pulse is related to the energy which that pulse transports through the medium. Putting a lot of energy into a transverse pulse will not effect the wavelength, the frequency or the speed of the pulse. The energy imparted to a pulse will only affect the amplitude of that pulse.

Nuclear energy can be considered a nonrenewable energy source because uranium deposits on Earth are exhaustible.

Nonrenewable resources

Nonrenewable energy or resources are those that are used at a rate that is faster than the rate at which they are naturally replenished.

The source of the world's nuclear energy is uranium deposits, a mineral that is nonrenewable. In other words, the uranium mineral deposit that fuels nuclear reactors can be exhausted one day because they are not replenished naturally.

More on nonrenewable resources can be found here: https://brainly.com/question/10234697

The value of the Fermi-Dirac distribution for energies less than the Fermi energy at absolute zero temperature (T=0K) is 1.00.

The Fermi-Dirac distribution function describes the probability of finding an electron in a specific energy state in a Fermi gas. It is given by the equation:

f(E) = 1 / (1 + exp((E - EF) / (kT)))

Where f(E) is the Fermi-Dirac distribution function, E is the energy, EF is the Fermi energy, k is Boltzmann's constant, and T is the temperature.

At absolute zero temperature (T=0K), the exponential term in the equation becomes infinite for energies less than EF, and the distribution function simplifies to:

f(E) = 1 / (1 + ∞) = 1 / ∞ = 0

Therefore, for energies less than the Fermi energy at absolute zero temperature, the value of the Fermi-Dirac distribution function is 0. However, it's important to note that this result assumes ideal conditions and a non-degenerate Fermi gas.

Learn more about Fermi-Dirac here:

https://brainly.com/question/32505427

#SPJ11

(a) To find the center-to-center distance between adjacent slits, we can use the formula:

d * sin(θ) = m * λ,

where d is the slit separation, θ is the angle, m is the order of interference, and λ is the wavelength of light.

In this case, the third diffraction minimum corresponds to m = 3, and the wavelength of light is given as 550 nm (which is equivalent to 550 × 10^(-9) m). The angle θ is 66.6°.

Using the formula, we have:

d * sin(66.6°) = 3 * 550 × 10^(-9) m.

We can rearrange the formula to solve for d:

d = (3 * 550 × 10^(-9) m) / sin(66.6°).

Calculating this expression, we find:

d ≈ 1.254 × 10^(-6) m.

Therefore, the center-to-center distance between adjacent slits is approximately 1.254 μm.

(b) To find the number of slits per mm, we can use the reciprocal of the center-to-center distance between adjacent slits:

Number of slits per mm = 1 / (d * 10^3).

Substituting the value of d, we get:

Number of slits per mm ≈ 1 / (1.254 × 10^(-6) m * 10^3) ≈ 796,738 slits/mm.

Therefore, the number of slits per mm is approximately 796,738 slits/mm.

(c) The width of each slit can be calculated by subtracting the width of the central bright fringe from the center-to-center distance between adjacent slits. Since the fourth-order interference maximum is missing, we can assume the central bright fringe is at the same position as the third diffraction minimum.

The width of each slit = d - λ / sin(θ).

Using the values we have, the formula becomes:

Width of each slit = (1.254 × 10^(-6) m) - (550 × 10^(-9) m / sin(66.6°)).

Evaluating this expression, we find:

Width of each slit ≈ 1.168 × 10^(-6) m.

Therefore, the width of each slit is approximately 1.168 μm.

Learn more about interference here:

https://brainly.com/question/22320785

#SPJ11

Answer:

no work is said to be done by standing man carrying 500kg load because

Explanation:

for the work to be done there should be two conditions i.e force should be applied and displacement must be covered.So for a man carring a 500 kg load force is there but he covers no distance by standing so displacement will be zero and since

work =force\displacement

displacement is zero so we can say that no work is done

False. Type III Portland cement is a high-early-strength cement, which means it gains strength faster in the early stages of curing. However.

the long-term compressive strength of concrete using Type I Portland cement (general-purpose) is generally higher. Type I cement has a slower hydration rate, allowing for more complete and denser hydration of the cement particles over time, resulting in stronger concrete in the long run. So, Type I cement is preferred for applications where long-term strength and durability are critical, such as structural elements in buildings and bridges. Type III Portland cement is a high-early-strength cement, designed for rapid strength development in the early days of concrete curing. However, Type I Portland cement (general-purpose) generally results in higher long-term compressive strength. Type I cement has a slower hydration rate, allowing for more complete and denser hydration over time, leading to stronger and more durable concrete in the long run.

learn more about strength here:

https://brainly.com/question/28706416

#SPJ11

It has been proposed that the total number of civilizations that have arisen in our galaxy would be closest to 100,000.

A galaxy is a group of stars (solar systems), gas, and dust in a specific position in the Universe.

The Milky Way is the galaxy where we live and it has been proposed that this galaxy is full of dead civilizations.

In conclusion, the total number of civilizations that have arisen in our galaxy would be closest to 100,000.

Learn more about galaxies here:

https://brainly.com/question/13956361

#SPJ1