a roller coaster is at the top of a 72m hill and weighs 134 kg. the coaster (at this moment) has potential energy. calculate it

Answer:

Large above ground mausoleums were not common in the elite Shang burials.

Explanation:

Large, above the ground mausoleums were not common so the answer is option B.

Answer:the same

Explanation:their moving at the same speed and collapse

According to Newton's law, the force exerted by the bug and car is equal and opposite. Thus their acceleration decreases as mass increases. Therefore the acceleration of bug will be greater than that of the car.

Acceleration, in physics is the rate of change in velocity. Thus it has the unit m/s². Newton's second law of motion states that the force acting on a moving body is the product of its mass and acceleration.

Hence F=  m a indicates that the acceleration is in inverse proportionality with the mass. Thus a body with greater mass will have smaller acceleration but greater force.

According to third  law of motion, an action have an equal opposite reaction. Thus the force exerted by the bug on the car and the force exerted by the car on bug are equal and opposite where, the bug will have greater acceleration due to its less mass.

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Answer:

Explanation:

Answer:

Centripetal force is when everything is fixated at the center point and is accelerated inwards towards the center. This centripetal force is assisted by inertia to remove the water from the washing machine.

Explanation:

The activity in which a competitor displayed good sportsmanship towards me was during a football match.

This is an ethics or attitudes that show respect for the rules of a game and for the other players.

Sportsmanship was shown when i lost the deciding penalty and was consoled by the opponent.

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Answer:

Explanation:

Given :-

Solution :-

Frequency of a wave is given by :

where,

On substituting the values we get :

\(\dashrightarrow \sf F = \dfrac{240}{0.20} \\ \\ \dashrightarrow \rm F = 1200 \: Hz \\\)

The magnitude of the change in amplitude is approximately 4.37 times the original amplitude.

The conservation of energy principle states that the total energy of the system before and after the transformation remains the same. Therefore, the energy in the wave before and after passing through the middle ear should be conserved.

The energy of a wave is given by:

E = 1/2 * m * v² * A² * f²

here m is the mass per unit volume of the medium, v is the velocity of the wave, A is the amplitude of the wave, and f is the frequency of the wave.

Assuming that the mass per unit volume of air and the fluid in the cochlea is the same, we can set the energy of the wave before and after passing through the middle ear equal to each other:

= 1/2 * cramster-equation-2010731130406341613664 * v² * A² * cramster-equation-2010731131286341613668²

= 1/2 * cramster-equation-2010731130406341613664 * v² * A² * cramster-equation-2010731131286341613668²

where A' is the amplitude of the wave after passing through the middle ear.

Simplifying and solving for A', we get:

A' = A * (v_middle ear / v_outer ear)

where v_middle ear is the velocity of sound in the middle ear, and v_outer ear is the velocity of sound in air.

Since the ossicles serve to transmit the vibrations of the tympanic membrane to the fluid-filled cochlea, they must also increase the velocity of the sound wave. The velocity of sound in air is approximately 343 m/s, while the velocity of sound in the fluid in the cochlea is approximately 1500 m/s. Therefore, the ratio of the velocities is:

v_middle ear / v_outer ear = 1500 / 343 = 4.37

Substituting this value into the equation for A', we get:

A' = A * 4.37

As a result, the amount of the magnitude of amplitude change is around 4.37 times more than the initial amplitude.

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Answer:

Overloading the muscles causes them to get stronger and grow larger.

Answer:

The magnitude of the displacement is  \(H = 14.14 \ km\)

Explanation:

From the question we are told that

  The distance of the car to north is  d =  10 km

   The distance of car to the west is  w =  - 10 \  km

The negative sign is because the direction is  west

Generally applying Pythagoras theorem , the displacement is  

         \(H = \sqrt{d^2 + w^2}\)

=>      \(H = \sqrt{(10)^2 + (-10)^2}\)

=>     \(H = 14.14 \ km\)

The internal normal force at point C is 0, the internal shear force at point C is -600 lb, and the internal bending moment at point C is -1500 lb-ft.

To determine the internal normal force, shear force, and bending moment at point C, located just to the left of the 900 lb force, we can use the method of sections. This method involves cutting the beam at the point of interest and analyzing the forces and moments acting on each section separately.

First, let's determine the reactions at the supports. We can use the equations of equilibrium to find these reactions:

ΣFx = 0
RAx = 0

ΣFy = 0
RAy + RB = 900 lb

ΣM = 0
(10 ft)(RAy) - (5 ft)(900 lb) - (15 ft)(RB) = 0

Solving for the reactions, we get:

RAy = 300 lb
RB = 600 lb

Now, let's cut the beam at point C and analyze the left section:

ΣFx = 0
N = 0

ΣFy = 0
V = RAy - 900 lb = 300 lb - 900 lb = -600 lb

ΣM = 0
M = (10 ft)(RAy) - (5 ft)(900 lb) = (10 ft)(300 lb) - (5 ft)(900 lb) = -1500 lb-ft

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Tetrachloromethane is the name given to the CCl4 chemical.

Structure of carbon tetrachloride chemically. The liquid CCl4 is transparent, nonflammable, and heavy. It evaporates quickly and has a distinctive sweet smell that is similar to that of chloroform. The term "volatile organic compound" refers to CCl4 (VOC).

The secondary prefix for four carbon atoms is tetra. The first prefix for chlorine is chloro. Meth represents the word's root, which is carbon. Tetrachloromethane, which may also be written as 1,1,1,1, is the name of the substance. a week ago With the chemical formula CCl4, carbon tetrachloride is an organochlorine chemical compound that goes by several different names.

covalent substance Since it has four non-polar covalent connections between carbon and chlorine, carbon tetrachloride (CCl4) is classified as a covalent molecule.

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Answer: I do believe the answer is D if not then sorry and let others know in the comment section

The doll experiment did not suggest the African Americans felt more secure and positive because of school segregation. The correct option is D.

School segregation in the United States is the segregation of students based on their colors and caste. An institution can be predominantly owned by the black and only black students can study into it.

The Americans who are black belonged to the African continent. They felt more safety and secure by studying into this segregated school.

Thus, the correct option is D.

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Answer:

Air resistance is pushing up on the parachute and force of gravity is pulling down so she slows down. This increases friction which slows free fall down. So when the skydiver reaches terminal velocity, the force of gravity is balance by air resistance. But when the forces are balance, there is no acceleration.

Answer:

Take a look below

Explanation:

Answer:

n.6 is T

Explanation:

because mass always stays the same where ever you are but weight changes depending on the gravity

Answer: a. -720m/s^2

b. Yes, airbags will deploy

Explanation:

The formula for acceleration is:

= (Final velocity - Initial velocity)/Time

Final velocity = 0m/s

Initial velocity = 36m/s

Time taken = 0.05s

= (Final velocity - Initial velocity)/Time

= (0 - 36)/0.05

= -36/0.05

= -720m/s^2.

Since it's negative, it shows that there was a deceleration.

2. Yes the airbag will deploy since the acceleration gotten is more than -600 m/s^2.

Answer:

\(g=16.31\ m/s^2\)

Explanation:

Given that,

The length of the pendulum, l = 2 m

The period of the pendulum, T = 2.2 s

The formula for the time period of a pendulum is given by :

\(T=2\pi \sqrt{\dfrac{l}{g}}\)

or

\(T^2=4\pi ^2\dfrac{l}{g}\\\\g=\dfrac{4\pi ^2l}{T^2}\\\\g=\dfrac{4\pi ^2\times 2}{(2.2)^2}\\\\g=16.31\ m/s^2\)

So, the free fall acceleration is \(16.31\ m/s^2\).

To find the final velocity of the block, you can use the formula for linear momentum:

p = m * v

where p is the momentum, m is the mass of the object, and v is the velocity.

Since the block starts from rest, its initial velocity is zero. The final velocity can be found by rearranging the equation to solve for v:

v = p / m

Plugging in the given values, you get:

v = (80.0 N * 5.0 m) / 5.0 kg = 16.0 m/s

So the final velocity of the block is 16.0 m/s.

Answer: We can use the law of conservation of momentum which states that the total momentum before the jump is equal to the total momentum after the jump.

The momentum before the jump is given by:

P_before = m1 * v1

where m1 is the mass of the skateboarder and v1 is their velocity before the jump.

P_before = (63 kg) * (10 m/s) = 630 kg·m/s

The momentum after the jump is given by:

P_after = (m1 + m2) * v2

where m2 is the mass of the skateboard and v2 is their velocity after the jump.

To find v2, we need to solve for it:

P_after = (63 kg + 12 kg) * v2

P_after = 75 kg * v2

v2 = P_after / 75 kg

The momentum after the jump is the same as the momentum before the jump, so:

P_before = P_after

630 kg·m/s = 75 kg * v2

v2 = 8.4 m/s

Therefore, the velocity of the skateboard after the jump is 8.4 m/s.

Explanation:

Answer:

B) Settling a dispute or disagreement

Explanation:

A conflict is a disagreement or argument between opposing parties.

A resolution is a solution to a problem.

Knowing both these definitions, the answer choice that makes the most sense would be B) Settling a dispute or disagreement.

Hope this helps!!

Answer:

Longshore drift has a very powerful influence on the shape and composition of the coastline. It changes the slopes of beaches and creates long, narrow shoals of land called spits, that extend out from shore. Longshore drift may also create or destroy entire “barrier islands” along a shoreline.

Answer:

C.

Explanation:

the earth has a high greavitational pull

Answer: C the person and earth

Explanation: I just answered it on a p e x

Answer:

your answer is A

Explanation:

brainliest plzzzz

Answer:

c is the correct answer

Answer:

The distance traveled is 24 m.

Explanation:

speed, v = 3 m/s

time, t = 8 s

Let the distance is d.

distance = speed x time

d = 3 x 8 = 24 m

The ball that is thrown directly downward with an initial speed of 7.05 m/s, from a height of 29.9 m. takes 3.29 s to strike the ground

The formula for the downward vertical launch and the procedure we will use is:

t = {V₀ + \(\sqrt{}\)[(V₀)² + 2*g*y]}/ g

Where:

Information about the problem:

With the information gave, we can calculate the time from the ball is thrown, using the formula of downward vertical launch:

t = {V₀ + \(\sqrt{}\)[(V₀)² + 2*g*y]}/ g

t = {7.05 m/s + \(\sqrt{}\)[(7.05 m/s)² + 2*9.8 m/s²*29.9 m]}/ 9.8 m/s²

t = {7.05 m/s + \(\sqrt{}\)[49.70 m²/s² + 586.04m²/s² ]}/ 9.8 m/s²

t = {7.05 m/s + \(\sqrt{}\)[635.74 m²/s² ]}/ 9.8 m/s²

t = {7.05 m/s + 25.214 m/s}/ 9.8 m/s²

t = 32.26 m/s/ 9.8 m/s²

t = 3.29 s

In physics vertical launch is the motion described by an object that has been launched vertically in which the acceleration is the earth's gravitational force.

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Kinetic energy is the energy when a object is in motion. ...  energy gets transferred to the object,  The energy transferred is kinetic energy, and it depends on the mass and speed.

Explanation:

A three-stage reverse osmosis (RO) system is designed using Osmonics permeator module data. The system has a membrane recovery ratio of 7% and a salt rejection rate of 99.5%.

The maximum applied pressure is 5500 kPa, with a minimum brine flow rate of 1.584 m³/d and a maximum brine flow rate of 14.256 m³/d. The permeate flow rate is 1.43 m³/d. This system is designed to handle a feed salinity of 34,000 ppm and has a plant capacity of 24,000 m³/d.

The three-stage RO system is designed to effectively remove salt from water. The membrane recovery ratio of 7% indicates that 7% of the incoming water will be transformed into permeate, while the remaining 93% becomes brine. This recovery ratio helps maintain the performance and lifespan of the RO membranes. The high salt rejection rate of 99.5% ensures that the permeate has a significantly reduced salt content.

The system operates at a maximum applied pressure of 5500 kPa, which is necessary to drive the water through the RO membranes and achieve the desired separation. The minimum brine flow rate of 1.584 m³/d and the maximum brine flow rate of 14.256 m³/d indicate the range within which the brine is discharged.

The permeate flow rate of 1.43 m³/d represents the amount of purified water produced by the RO system. This flow rate is suitable for a plant capacity of 24,000 m³/d, which means the system can produce up to 24,000 cubic meters of purified water per day.

Overall, this three-stage RO system, designed based on Osmonics permeator module data, is equipped to handle water with a salinity of 34,000 ppm and provide a large-scale water treatment solution with high salt rejection and significant production capacity.

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The force of friction acting on the fridge is 149.3 N.

Force of friction is the force that tends to oppose the motion of two surfaces that are in contact.

To get an object into motion the force of friction must be overcame.

The force of friction also tends to oppose the motion of an object.

The frictional force on the refrigerator is calculated by apply Newton's second law of motion.

F - Ff = ma

where;

If the refrigerator didn't budge, acceleration = 0

F - Ff = 0

F = Ff

149.3 N = Ff

Thus, when the force of friction is equal to applied force, the object won't move.

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