Help Quick!!!!
In the formation of metamorphic rocks, what effect do temperature and pressure primarily have?

A:They erode rocks.
B:They create layers.
C:They make rocks smaller.
D:They change existing minerals.
HURRY PLEASE!!!

Answer:

true

Explanation:

hope this helped!

Answer:

true :)

Explanation:

The situation that is understood using Newton's first law of motion, and not Newton's second law of motion are "A parked car" and "A car traveling in a straight line on cruise control"

Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity, unless acted upon by an external force. This law is best suited for situations where there is no net force acting on an object, such as a parked car or a car traveling in a straight line on cruise control.

On the other hand, Newton's second law of motion relates the acceleration of an object to the net force acting on it and its mass. This law is better suited for situations where there is a net force acting on an object, such as a free falling rock or a car on cruise control turning in a circle.

Therefore, the situations best understood using Newton's first law of motion are the parked car and the car traveling in a straight line on cruise control, and the situations best understood using Newton's second law of motion are the free falling rock and the car on cruise control turning in a circle.

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The momentum =force X velocity if distance is more is the more momentum . so longer length need to be chosen that is 100cm

is a mathematical statement that combines a physical quantity and a distance. Momentum relate to physical quantities that are dispersed from the reference point and are often described with regard to a fixed reference point. The instant thus explains the position or arrangement of the quantity. For instance, the momentum of force, also known as torque, is the result of the force acting on an object and the item's distance from the reference point. In theory, a minute can be created by multiplying any physical quantity by a distance. Forces, masses, and electric charge distributions are often used units.

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Answer:

A, 0.050 Hz

Explanation:

1) Frequency = speed divided by wavelength

time is 2* 60 = 120 seconds

distance = 6 wave lengths

speed = distance divided by time

speed = 6 wave lengths divided by 120

Hope this helps!

a. The Aya's weight on Earth is 441 Newtons.

b. The Aya's mass on the moon would still be 45 kg.

c. Aya's weight on the moon is 72 Newtons.

a. Ayas weight on Earth can be calculated using the formula:

Weight = mass * gravitational acceleration

The gravitational acceleration on Earth is 9.8 m/\(s^2\).

Plugging in the given mass:

Weight = 45 kg * 9.8 m/\(s^2\) = 441 N

Therefore, Ayas' weight on Earth is 441 Newtons.

b. Aya's mass remains the same on the moon as it does on Earth. Therefore, Aya's mass on the moon would still be 45 kg.

c. To calculate Aya's weight on the moon, we need to consider the gravitational acceleration on the moon. The gravitational acceleration on the moon is approximately 1.6 m/\(s^{2}\). Using the same formula:

Weight = mass * gravitational acceleration

Weight = 45 kg * 1.6 m/\(s^{2}\) = 72 N

Therefore, Aya's weight on the moon is 72 Newtons.

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The sample type are as follows:

(i) Since the concentration of free electrons (2×10^18 atoms/cm^3) is greater than the concentration of holes, the Ge sample is n-type.

(ii) Since the concentration of holes (3×10^14 atoms/cm^3) is much larger than the concentration of free electrons, the Ge sample is p-type.

To determine the concentration of free electrons and holes in a sample of Germanium (Ge) at 300 °K with a concentration of donor atoms of 2×10^18 atoms/cm^3 and an acceptor atom concentration of 3×10^14 atoms/cm^3, we can calculate the carrier concentrations using the following equations:

(i) For n-type Ge:

The concentration of free electrons (n) can be approximated as equal to the concentration of donor atoms (Nd) since the majority carriers in n-type Ge are electrons. Therefore, n ≈ Nd = 2×10^18 atoms/cm^3.

The concentration of holes (p) can be calculated using the equation:

p ≈ ni^2 / n,

where ni is the intrinsic carrier concentration of Ge at 300 °K.

(ii) For p-type Ge:

The concentration of free electrons (n) can be approximated as equal to the concentration of acceptor atoms (Na) since the majority carriers in p-type Ge are holes. Therefore, n ≈ Na = 3×10^14 atoms/cm^3.

The concentration of holes (p) can be calculated using the equation:

p ≈ ni^2 / n,

where ni is the intrinsic carrier concentration of Ge at 300 °K.

To know more about carrier concentrations and intrinsic carrier concentration, refer here:

In both cases, the intrinsic carrier concentration (ni) of Germanium at 300 °K is approximately 2.5×10^13 atoms/cm^3.

Therefore, in part (i), since the concentration of free electrons (n) is greater than the concentration of holes (p), the Ge sample is n-type.

In part (ii), the concentration of free electrons (n) is much smaller than the concentration of holes (p), indicating that the Ge sample is p-type.

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Explanation:

The potential energy of an object has the following formula

         Potential energy = mgh

      where m = mass of the object

                   g = acceleration due to gravity

                   h = height of the object

This means that the potential energy of an object depends upon its mass, acceleration due to gravity, and height.

In the given situation we have a bucket full of water. If the mass and acceleration due to gravity are not changed, the only way the potential energy can be decreased is by reducing the height of the bucket full of water.

This can be done by: -

         (i) Lifting the bucket full of water in such a way that you

             decrease its height as compared to the bench.

        (ii) Put the bucket full of water on a stool whose height is

            lower than the bench.

Answer:

1.By decreasing it's contents- this decreases the weight of the bucket thus decreasing the potential energy of the bucket.

2.By decreasing the height of the bench we have decreased the amount of potential energy stored in the bucket

Answer:

The kinetic energy of the cell phone is 9J

Explanation:

The kinetic energy is the energy possessed by a body by virtue of motion.

The kinetic energy is expressed as

KE= 1/2m(v)²

Given data

Mass of cell phone m= 80g--to kg=80/1000= 0.08kg

Velocity of cell phone v= 15m/s

Substituting our given data we have

KE= 1/2*0.08(15)²

KE= (0.08*225)/2

KE=18/2

KE= 9J

Answer:

Use the method on the image and solve it.

The train is accelerating with an initial velocity of 23 m/s, a final velocity of 190 m/s in the time period of 54 seconds, then the acceleration will be 3.09 m/s².

Velocity is the measurement of a particle's or object's displacement with relation to time. The recognized unit of magnitude for velocity is the meter per second (m/s) (also known as speed).

There are several ways to show a velocity vector's direction, depending on how many dimensions are provided.

The given values in the question are,

Initial velocity, u = 23 m/s

Final velocity, v = 190 m/s and,

Time, t =54 seconds.

By putting the formula of the equation of motion :

v = u + at

190 = 23 + (a)(54)

a = 167/54

a = 3.09 m/s².

Hence, the acceleration of the train is equal to 3.09 m/s².

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The pendulum bob B of mass M is released from rest when \(\theta=0^0\). the tension in the cord at the instant the bob reaches point D, \(\theta = \theta1 = 45^0\) is 41.72 N.

The motion of a simple pendulum is idealized. It consists of a point mass attached to an inextensible, massless cable or rod suspended from a pivot point. The pendulum oscillates about the pivot point in a plane that is orthogonal to the rod or cable and has a period that depends solely on the pendulum's length and gravitational acceleration.

As a result, the time period of a pendulum is calculated. The time it takes for a pendulum to swing back and forth is referred to as the time period. It is denoted by T and measured in seconds.

A simple pendulum's time period is calculated using the formula:

\(T = 2\pi(L/g)^{(1/2)}\)

where T = time period, L = length of the pendulum, and g = acceleration due to gravity = \(9.81 m/s^2\).

Tension in the string at the time of release \(\theta = 0^0\)in the pendulum. It implies that the pendulum is vertical. At this point, the tension in the cable is equal to the weight of the bob.

Mg = Tension = 3 x 9.81 = 29.43 N

When the bob reaches point D, \(\theta = \theta1 = 45^0\), the tension in the cord is determined. At point D, the velocity of the bob is

\(v = L\sqrt2gL = \sqrt(2 * 9.81 * 2) = 6.26 m/s\)

Kinetic Energy of bob KE = \((1/2)mv^2KE = (1/2) * 3 * (6.26)^2 = 58.46 J\)

Potential energy of the bob at D = mghU = mghU = 3 × 9.81 × (2 - 2cos45) = 39.22 J

Total mechanical energy at D = KE + U58.46 + 39.22 = 97.68 J

The total mechanical energy at D is equal to the initial mechanical energy since no energy is lost in the absence of any external forces.

WE = KE + UE = PE = mgh = 3 x 9.81 x 2 = 58.86 J

From the formula of total mechanical energy,

WE = Tension x L cosθTension

= (WE / L cosθ)Tension = (58.86 / (2cos45))

= 41.72 N

Therefore, the tension in the cord at the instant the bob reaches point D, \(\theta = \theta1 = 45^0\) is 41.72 N.

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Answer:

an example of when friction is a hindrance, is if someone with shorts is sliding down a slide. their skin rubbing on the slide will cause friction and will slow them down. another example is if you're dragging a large wooden box across the floor. the wood and the floor interacting cause friction and will make it more difficult to push the box.

Explanation:

hope this helps :D

Bonjour à toi,

An electrically neutral object does not mean that it has no electrical charge. If today we find some elementary particles without electric charge (Higgs Boson, photon and gluon), the neutrality of the atom and molecules, or more globally of matter is due to various processes. An atom is electrically neutral because the electric charges that compose it compensate each other (as much negative charge, the electron, as positive, the proton). Ionic molecules arrange themselves so that the electric charges that compose them compensate each other.

Answer:

Acceleration is the name we give to any process where the velocity changes. Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or change your direction—or change both.

Answer:

False

Explanation:

This depends on how much air is in the ball, I think

Answer: 1.72J

Just figured this out a while ago

The specific heat capacity formula is used to determine the quantity of heat required to alter the temperature of a unit mass of a substance by one degree Celsius.

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Explanation:

The reading on the scale is

W = m(g + a)

= (77 kg)(9.8 m/s^2 + 2 m/s^2)

= 908.6 N

Answer: beryllium

Explanation: i took the test i got it right!!

Answer:

Power = 0.33 Watts

Explanation:

Given the following data;

Distance = 1m

Force = 20N

First of all, we would solve for the work done by the boy.

Workdone = force * distance

Substituting into the equation, we have;

Workdone = 20*1 = 20J

Now to find power;

Power = workdone/time

Power = 20/60

Power = 0.33 Watts.

Answer: 19 meters.

Explanation:

We want to find the total displacement between t = 2s and t = 4s.

To do it, we can integrate our function, first write our velocity equation.

for t ≤ 3s, we have a linear equation, let's write it:

A linear relationship can be written as:

y = a*t + b

where a is the slope and b is the y-axis intercept.

For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:

a = (y2 - y1)/(x2 - x1).

Now we can see that our line passes through the points (1, 0) and (0, -2)

then the slope is:

a = (0 -(-2)/(1 - 0) = 2/1 = 2

and knowing that when t = 0s, v(0s) = -2m/s, then our equation is:

v(t) = (2m/s^2)*t - 2m/s for t ≤ 3s

now, for t ≥3s the equation is constant, v(t) = 4m/s.

then we have

v(t) = (2m/s^2)*t - 2m/s -------if t ≤ 3s

v(t) = 4m/s ----- if t ≥ 3s

Now we integrate over time to get the position:

for t ≤ 3s we have:

p(t) = (1/2)*(2m/s^2)*t^2 - 2m/s*t + C

where C is a constant of integration, as we are calculating the displacement  this constant actually does not matter, so we can use C = 0m

p(t) = (1m/s^2)*t^2 - 2m/s*t  for t ≤ 3s

and p(3s) =  (1m/s^2)*3s^2 - 2m/s*3s = 9m - 6m = 3m is the initial position of the other part of the function.

for t ≥ 3s we have:

p(t) = 4m/s*t + p(3s) = 4m/s*t + 3m

then the position equation is:

p(t) = (1m/s^2)*t^2 - 2m/s*t  ---- t ≤ 3s

p(t) = 4m/s*t + 3m --- if t ≥ 3s

Now the displacement will be:

p(4s) - p(2s) where for each time, you need to use the correct function:

p(4s) = 4m/s*4s + 3m = 16m + 3m = 19m

p(2s) =  (1m/s^2)*2s^2 - 2m/s*2s = 4m - 4m = 0m

p(4s) - p(2s) = 19m - 0m = 19m

The butterfly displacement x from t=2 to 4s is 19 meters.

The spacing between two specified points is represented by the one-dimensional quantity of displacement (symbolised as d or s), commonly known as length or distance.

The total displacement between t = 2s and t = 4s.

Integrate our function, the velocity equation.

for t ≤ 3s, we have a linear equation, let's write it:

A linear relationship can be written as:

y = a x t + b

where a is the slope and b is the y-axis intercept.

For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:

a = (y2 - y1)/(x2 - x1).

The line passes through the points (1, 0) and (0, -2)

The slope is:

a = (0 -(-2)/(1 - 0) = 2/1 = 2

When t = 0s, v(0s) = -2m/s, then our equation is:

v(t) = (2m/s²) x t - 2m/s for t ≤ 3s

now, for t ≥3s the equation is constant, v(t) = 4m/s.

v(t) = (2m/s²) x t - 2m/s -------if t ≤ 3s

v(t) = 4m/s ----- if t ≥ 3s

Now we integrate over time to get the position:

for t ≤ 3s we have:

p(t) = (1/2) x (2m/s²) x t^2 - 2m/s x t + C

where C is a constant of integration, to calculate the displacement  this constant actually does not matter,

p(t) = (1m/s²)*t^2 - 2m/s x t  for t ≤ 3s

and p(3s) =  (1m/s^2) x 3s² - 2m/s x 3s = 9m - 6m = 3m is the initial position of the other part of the function.

for t ≥ 3s we have:

p(t) = 4m/s x t + p(3s) = 4m/s x t + 3m

then the position equation is:

p(t) = (1m/s^2) x t² - 2m/s x t  ---- t ≤ 3s

p(t) = 4m/s x t + 3m --- if t ≥ 3s

Now the displacement will be:

p(4s) - p(2s) where for each time, you need to use the correct function:

p(4s) = 4m/s x 4s + 3m = 16m + 3m = 19m

p(2s) =  (1m/s²) x 2s²- 2m/s x 2s = 4m - 4m = 0m

p(4s) - p(2s) = 19m - 0m = 19m

Thus, the displacement is 19 m.

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Answer: The answer is 800 J

Explanation:

The magnitude of the frictional force acting on the block is 2 N since  the frictional force will exactly oppose the applied force. Answer is  B) 2 N

To determine the magnitude of the frictional force acting on the block, we need to use the coefficient of static friction (μs) and the normal force (N). The formula for calculating the maximum static frictional force (F_friction) is:

F_friction = μs * N

First, let's find the normal force. In this case, the normal force (N) is equal to the weight of the block, which is given as 10 N.

Now, let's use the given coefficient of static friction, which is 0.56. Plug the values into the formula:

F_friction = 0.56 * 10 N
F_friction = 5.6 N

Since the applied force (2.0 N) is less than the maximum static frictional force (5.6 N), the block will not move, and the frictional force will exactly oppose the applied force. Therefore, the magnitude of the frictional force acting on the block is: B) 2 N

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Answer:

Explanation:

ello

Answer:

Your balloon has been expanding for 5 hours.

Explanation:

Your balloon has been expanding for 5 hours.

The separation between the two slits, d is related to the wavelength, and angle using the formula below. Hence, the value of d is 1.22 x 10⁻⁶ m.

For ease of calculations we take 29.8° = 30°

Using the relation :

\(\frac{m * λ }{sin\theta}\)

where :

d = distance between the slits

θ = 30°

λ = wavelength of light = 617 nm = 6.17 x 10⁻⁷ m

m = 1

Substituting the values into the equation :

d = 1 x 6.17 x 10⁻⁷ / 0.5 = 0.00000122 = 1.22 x 10⁻⁶ m

Therefore, the seperation between the two slits is 1.22 x 10⁻⁶ m.

The double-slit experiment is a demonstration that light and matter can display characteristics of both classically defined waves and particles; moreover, it displays the fundamentally probabilistic nature of quantum mechanical phenomena.

This type of experiment was first performed, using light, by Thomas Young in 1802, as a demonstration of the wave behavior of light. At that time it was thought that light consisted of either waves or particles.

With the beginning of modern physics, about a hundred years later, it was realized that light could in fact show behavior characteristic of both waves and particles. Young's experiment with light was part of classical physics long before the development of quantum mechanics and the concept of wave–particle duality.

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Answer:

A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets.

Explanation:

please mark me as the brainliest please please

Answer:

it is any substances the produces a magnetic field which attracts or repels objects.(basically)