which two options are examples of wave refracting?
A. Your image in a mirror
B. Light bending as it travels through glass.
C. A voice echo.
D. An object appearing broken when partly seen through water.

A common activity like cooking a meal can use many natural Ingredients

Ingredients are substances combined to make a particular mixture such as a meal. most of the ingredients used for the preparation of a meal are sourced naturally.

In cooking different recipes of a meal the use of specific ingredients for each recipe differentiates the recipes.

Therefore we can conclude that cooking a meal requires the use of natural ingredients.

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Answer:

chris gets 960 and molly gets 1440

Explanation:

add the ratio up and divide

2+3=5

2400/5=480

480x2=960

480x3=1440

960+1440= 2400

The final angular velocity of the merry-go-round is 2.805 rad/s.

Substituting the given values into the above equations, we get:

L1 = 86.5305 kgm^2 * 2 rad/s = 173.061 Nms

I1 = 86.5305 kgm^2 + 46.9 kg * (1.5 m)^2 = 184.9265 kgm^2

r = 0.645 m

m = 46.9 kg

Therefore, I2 = I1 - m * r^2 = 53.410 kgm^2

Substituting I1, I2, and ω1 into the equation for angular momentum conservation, we get:

86.5305 kgm^2 * 2 rad/s = 53.410 kgm^2 * ω2

Solving for ω2, we get:

ω2 = (86.5305 kgm^2 * 2 rad/s) / (53.410 kgm^2) = 2.805 rad/s.

Angular velocity is a physical concept used to describe the rate of change of angular displacement of an object over time. Angular displacement refers to the change in the orientation or position of an object relative to an axis, while angular velocity describes the rate at which this change occurs.

Angular velocity is measured in units of radians per second (rad/s) and is calculated as the ratio of the change in angular displacement to the time taken for the change to occur. This means that an object with a higher angular velocity will rotate or move around an axis more quickly than an object with a lower angular velocity. Angular velocity is an important concept in physics and is used in many applications, including in the design of machinery, navigation systems, and robotics.

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Answer:

Seafloor spreading occurs because earthquakes break apart the ocean floor.

Seafloor spreading is a geologic process where there is a gradual addition of new oceanic crust in the ocean floor through a volcanic activity while moving the older rocks away from the mid-oceanic ridge. The mid-ocean ridge is where the seafloor spreading occurs, in which tectonic plates—large slabs of Earth’s Lithosphere—split apart from each other.

Seafloor spreading was proposed by an American geophysicist, Harry H. Hess in 1960. By the use of the sonar, Hess was able to map the ocean floor and discovered the mid-Atlantic ridge (mid-ocean ridge). He also found out that the temperature near to the mid-Atlantic ridge was warmer than the surface away from it. He believed that the high temperature was due to the magma that leaked out from the ridge. The Continental Drift Theory of Alfred Wegener in 1912 is supported by this hypothesis on the shift position of the earth’s surface.

The mid-ocean ridge is the region where new oceanic crust is created. The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed. The formation of the new crust is due to the rising of the molten material (magma) from the mantle by convection current. When the molten magma reaches the oceanic crust, it cools and pushes away the existing rocks from the ridge equally in both directions.

A younger oceanic crust is then formed, causing the spread of the ocean floor. The new rock is dense but not as dense as the old rock that moves away from the ridge. As the rock moves, further, it becomes colder and denser until it reaches an ocean trench or continues spreading.

It is believed that the successive movement of the rocks from the ridge progressively increases the ocean depth and have greater depths in the ocean trenches. Seafloor spreading leads to the renewal of the ocean floor in every 200 million years, a period of time for building a mid-ocean ridge, moving away across the ocean and subduction into a trench.

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The strong nuclear force overcomes the repulsive electric force of protons in the atomic nucleus because it is a much stronger force. It is able to act over very short distances and is mediated by particles that are much heavier than electrons and photons.

The repulsive electric force of protons in the atomic nucleus does not cause the protons to fly apart because of the strong nuclear force. The strong nuclear force is an attractive force between nucleons that overcomes the repulsion between protons due to the electromagnetic force. This force is responsible for holding the nucleus of an atom together.

We will explain the physics behind why the strong nuclear force overcomes the repulsive electric force. The protons in the nucleus are positively charged and would normally repel each other due to the electrostatic force. The reason why they do not is because they are held together by a stronger force, the strong nuclear force. This force acts between nucleons, which are particles found in the nucleus of an atom. The strong nuclear force is a short-range force that acts over distances of less than a femtometer. It is much stronger than the electrostatic force, which is why it is able to hold the nucleus together. The reason for this is that the strong nuclear force is mediated by particles called mesons, which are much heavier than electrons and photons. The strong force is able to overcome the repulsion between protons because it is much stronger than the electromagnetic force, which is what causes the repulsion in the first place.

The strong nuclear force overcomes the repulsive electric force of protons in the atomic nucleus because it is a much stronger force. It is able to act over very short distances and is mediated by particles that are much heavier than electrons and photons. This force is responsible for holding the nucleus of an atom together and is what allows for the existence of matter as we know it.

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true. condensation is when gas converts to liquid. the molecules move slower because of a loss of thermal energy, so it forms liquid

Answer: Water will. (A) freeze.

Explanation: 0 degrees Celsius is cold so the water will turn into a solid and therefore freeze.

Answer:

8.803 s

(but this is only if it's a free fall, which we assume since we didn't get the mass of the hulk)

The amount of kinetic energy of an object depends upon the motion of the object and the mass of the object. Thus, the correct option is A.

The kinetic energy is a form of energy which is present in a moving object. Kinetic energy of an object is the energy which it possesses due to its motion. This energy can be defined as the work which is needed to accelerate a body of a given mass from rest to its stated velocity. A body maintains a constant kinetic energy unless its speed changes.

The kinetic energy is a vector quantity as it has both the magnitude and the direction. Kinetic energy of a moving object can be calculated as it depends directly on its mass and velocity. It can be calculated with the equation:

KE = 1/2 × m × v²

where, KE = Kinetic Energy,

m = mass of the object,

v = velocity of the object

The unit of KE is same as work that is Joule (J).

Therefore, the correct option is A.

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Your question is incomplete, most probably the complete question is:

The amount of kinetic energy an object has depends on which feature of the object?

a. its motion

b. its position

c. its gravity

d. its height

Mexican food has become popular worldwide because of its unique flavors and deliciousness. When eating Mexican food, people have different preferences on where to eat, and some prefer to order a salsa.

A survey on people's favorite Mexican restaurant and their preference for ordering salsa may yield biased results due to various reasons. Biased results are those that are not accurate and do not reflect the actual views of the respondents. Therefore, some of the reasons that may cause the survey to yield biased results are as follows: Sampling errors: A survey may be biased if the sampling of participants is not done well. A biased sampling may involve picking people who have similar views, leading to false results. Questionnaire: If the survey questionnaire contains questions that are subjective and not well understood by the participants, then the answers given may be biased. The questions should be specific and clear.Respondents: The results may be biased if the people who participate in the survey have a specific mindset. For instance, if a group of people who are vegetarian participate in the survey, their answers may be biased towards vegetarian foods.Misinterpretation of answers: Survey results may be biased if the surveyor misinterprets the answers given by the participants or if the participants give ambiguous answers.In conclusion, the survey on people's favorite Mexican restaurant and their preference for ordering salsa may yield biased results. The surveyors need to be careful when selecting the participants, preparing the questionnaire, interpreting the results, and analyzing the data.

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The most commonly effective spin recovery technique for a straight-wing aircraft is the "neutralize controls, reduce power, and apply opposite rudder" method, often abbreviated as "PARE".

This involves first neutralizing the ailerons and elevator to reduce the angle of attack, then reducing the power to minimize the aerodynamic forces contributing to the spin, and finally applying opposite rudder to counteract the yawing motion and stabilize the aircraft.

Once the spin has been arrested, the aircraft can be gradually recovered by slowly increasing power and returning to level flight. It is important for pilots to be trained in spin recovery techniques to maintain safety during flight.

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Answer:

Explanation:

Answer:

Answer in below and plz mark me as brainlist plz

Explanation:

The rate of change of momentum =tm(v−u) Rate of change of momentum = force applied. Force∝tm(v−u) Velocity is the rate of change of displacement and acceleration is the rate of change of velocity. Impulse is a change in momentum

The rate of change of momentum =tm(v−u) Rate of change of momentum = force applied. Force∝tm(v−u) Velocity is the rate of change of displacement and acceleration is the rate of change of velocity. Impulse is a change in momentum

Answer: 239.0025 miles.

Explanation:

First we have the relationship:

Distance  = speed*time.

Because how it is worded, i guess that the boat can mantain a constant speed of 318.67 mph for 0.75 hours.

Then, we have the speed and the time, with those values we can find the distance.

speed = 318.67 mph

Time = 0.75 hours.

Distance = 318.67 mph*0.75h = 239.0025 miles.

Answer: B is the correct answer because if you look, it takes P a longer time to get somewhere while it takes R a shorter time to get somewhere.

Answer:

When the ball goes down its mechanical energy is conserved, ust before touching the ground all the energy is kinetic

When the ball touches the floor, energy has been converted into potential and heat, by the deformation of the ball.

Explanation:

When the ball goes down its mechanical energy is conserved, this is the power energy due to the height it is converted into kinetic energy to medicad that falls, just before touching the ground all the energy is kinetic.

When the ball touches the floor, the kinetic energy is not conserved, but if we define a system formed by the ball and the floor, the amount of movement is conserved, this being an inelastic shock, because the bla and the floor are stuck, so which energy has been converted into potential and  energized and heat by the deformation of the ball.

   Consequently all the mechanical energy that the ball brings before reaching the ground was converted into potential energy and heat during the crash.

The ball of dough does not rebound after it hits the ground because its kinetic energy store decreases, ie; most of its kinetic energy is transferred to the surroundings as thermal energy and sound energy.

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Explanation:

think4

pleas! mark me s brainliest please please

The question is incomplete, the complete question is;

A car is moving  at a constant speed of 3 m/s when a force of 25N is acting on it. What will happen if the force is changed to 35N?

The car will move at a constant speed of 13 m/s

The speed of the car will not change.

The speed of the car will increase.

The speed of the car will decrease to 1 m/s

Answer:

The speed of the car will increase.

Explanation:

When a the force acting on an object moving at constant velocity is changed, its velocity changes accordingly.

The question said that the car was moving at a constant velocity of 3m/s when a 25 N force is applied, then the car must move faster than 3 m/s when a 35 N force is applied since the 35N force is greater than the 25 N force.

Hence the answer above.

Answer:

newton's 2nd  law

Explanation:

In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.

The primary effect of increasing the surface tension of the liquid is to increase the capillary force. Capillary forces arise due to the combined effects of adhesion and cohesion

When the surface tension of the liquid increases, the capillary rise will increase. It is because the increase in surface tension leads to an increase in the force that pulls the liquid upwards in a tube. is as follows;If you place a capillary tube in a beaker filled with water, the water surface inside the tube rises slightly higher than the level outside the tube.

This rise in water level is called capillary rise. The capillary rise is caused by the attraction between the molecules of the water and the molecules of the glass tube.This attraction is called capillary force or capillary action. The capillary force is due to the combined effect of adhesive and cohesive forces. The adhesive force is the attraction between the molecules of the liquid and the molecules of the solid surface, while the cohesive force is the attraction between the molecules of the liquid.

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Total angular velocity is 13.7 rad/s.

Given that an object is moving in a circular motion, we can infer that the system involving the athlete, the ball, and the rope is also moving in a round fashion.

We are informed that the athlete is 181 cm tall, has a 90 cm arm span, and will be using a 121 cm long ball and chain for the competition. With both arms hanging on to the ball and chain handle as the athlete starts to spin, their body becomes the centre of the action. The ball and chain's initial linear velocity is 29 m/s when it is released.

The radius of the path= 90 cm + 121 cm

                                    = 211cm or 2.11 m

Using;
linear velocity = radius * angular velocity

V = rω

ω = V/r

ω =  29m/s/2.11 m

ω = 13.7 rad/s

angular velocity of athlete is 13.7 rad/s

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Work is done on the boxes as we push it around the store and on the piano when we drop it from the third floor  and work is not done on the locked door, on the dishes and on the bowling ball.

The work done is given by the dot product of the displacement and the force,

W = F.d

W = FdcosA, A is the angle at which the force is applied.

In the first scenario, the work is not done on the locked door that remains closed while we try to pull it open on the door as we push against it and open it, because there is no displacement.

Work in not done to pull a tablecloth out from under them and they remain in place on the dishes, because no displacement of the dishes.

Work is done on boxes as we lift them and place them on the shelf on a shopping cart as we push it around the store because displacement happened.

Work is done on the piano when we drop it from the third floor to the ground floor because A = 0 degrees.

Work is not done on the bowling ball that we are holding while waiting for our turn to bowl because A = 90 degrees.

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Answer:

In the centre of a star, the temperature and pressure are so high that four protons can fuse to form helium, in a series of steps.  

Explanation:

Answer: a = -15 m/s^2

Explanation:

a = Δv/Δt

a = (10 m/s - 40 m/s)/(2.0 s)

a = -15 m/s^2

The length of the horn is made shorter, so the frequency will increase.

The wavelength, which is just a fancy way of saying how far the wave goes, is determined by the length of the horn. In light of this, a short horn tube will result in a short wavelength, and vice versa.

Pitch is defined by numerous properties of sound waves, and these properties depend on one another to establish pitches in musical instruments.

The relationship between the

and wavelength in this instance.

The formula c = fλ, where c is the sound speed through the instrument, f is the frequency, and λ is the wavelength, explains how the relationship between the wavelength and its frequency works.

Assuming that the mouthpiece blower maintains a constant airflow rate, an increase in wavelength will result in a drop in frequency. On the other hand, as the horn's tube gets smaller, the frequency rises.

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Answer:

It's a golgi body

Explanation:

It controls the transport system of the cell

What goes in and out the cel

Answer:

So work require will be 3888×10×10³J

Explanation:

⇒Work done=Change in kinetic energy

⇒KE=1/2mv²

⇒Mass->15000kg

⇒Velocity->72km/h

⇒KE=1/2×15000×(72)²

⇒KE=1/2×15000×5184

⇒KE=7500×5184

⇒KE=3888×10×10³J