An analogy makes a comparison between objects based on their similar qualities. Cassidy wanted to create an analogy for the motion of atoms in solids, liquids, and gases, so she compared them to marbles in a tray. Which best compares the phases of matter to marbles in a tray?

The dark-colored rock pocket mice on dark lava flows have white bellies, as there is no selection for dark bellies by visual predators.

Natural selection is the process of choosing an animal with specific traits for the next generation.

A genetic mutation that alters their hue caused this to happen. This is a consequence of natural selection in turn. Those with advantageous qualities are decided by nature to survive and procreate.

The procedure that improves an organism's chances of surviving is called a mutation. A dark belly can be advantageous for reproduction. White bellies are crucial for camouflaging.

Therefore, due to the lack of selection for dark bellies by visual predators, the dark-colored rock pocket mice on black lava flows have white bellies.

To learn more about natural selection, refer to the below link:

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Answer:

A, B and C

Explanation:

An object thrown with a speed at some angle near the Earth undergoes a projectile motion. It moves in a curved path under the action of gravity only. The object is known as projectile.  options A, B and C are examples of projectile motion. These objects move under the action of gravity only.

An airplane landing is in control of its motion and does not move just under the action of gravity. So, it cannot be considered as projectile motion.

The answer is D I took the test

The law of conservation of momentum tells us that momentum is conserved, therefore total initial momentum should be equal to total final momentum. In this case, we can expressed this mathematically as:

mA vA + mB vB = m v

where, m is the mass in kg, v is the velocity in m/s

since m is the total mass, m = mA + mB, we can write the equation as:

mA vA + mB vB = (mA + mB) v

furthermore, car B was at a stop signal therefore vB = 0, hence

mA vA + 0 = (mA + mB) v

1800 (vA) = (1800 + 1500) (7.1 m/s)

vA = 13.02 m/s

Answer:

Option C integrity.

Step-By-Step Explanation:

The best attribute for an office professional to have is Integrity

Because if you are following integrity you will be in ethical manner whoever say anything to you.Your mind will not make you to lose your values which is the most important thing in anybody's life.

If you do not have integrity you may lose and you lose your temper you will get quite or pretty much aggressive and you may get fired.

Answer:

I believe I know your answer choices, the answer would be finding ways to use energy

Explanation:

In chemistry we have a way to store the power, we use batteries to store this energy, so it can’t be this. We also have a way to produce it consistently, using wind power and solar panels. We currently are making strides to conserve energy, by sharing consumptions graphs with others. Chemistry is all about finding the use for it! There possibilities never end, which makes this goal, and more importantly, the answer.

Final answer:

The greatest danger on expressways is often the combination of high speeds, aggressive driving, and other driving behaviors that can lead to severe accidents. Patience and safe driving practices are crucial to avoid these dangers. The scenario provided demonstrates an example of aggressive driving that could pose a risk on the expressway.

Explanation:

When driving on an expressway, the greatest danger often arises from high speeds combined with factors such as driver behavior, environmental conditions, and vehicle performance. High-speed environments increase the potential severity of any accident that may occur. Furthermore, situations involving aggressive driving, such as tailgating, improper lane changes, or the act of speeding itself, can lead to collisions. For example, like the scenario of Peter who became frustrated with a slower driver and engaged in tailgating and horn honking, it is essential to practice safe driving behaviors and be patient to avoid accidents.

Regarding the scenario about the rabbit crossing the expressway, if the car is traveling in the furthest lane from the rabbit, there is no guarantee the rabbit would be able to cross all three lanes safely. It is unpredictable due to the potential for multiple vehicles and varying speeds. Animal crossings on highways are hazardous and often result in accidents.

Final answer:

The weight of the landing craft on the surface of Callisto is 3264 N, derived by analyzing the force provided by the craft's engine in two different scenarios according to Newton's second law of motion.

Explanation:

The question involves understanding Newton's second law of motion, which is F = ma, where F is the net force applied to the object, m is the mass of the object, and a is the acceleration.

When the engine provides an upward force (thrust) of 3264 N, the craft descends at a constant speed, implying that the thrust balances out the weight of the craft (weight = gravitational force). Therefore, the net force, F, is zero, and the acceleration is 0 m/[tex]s^{2}[/tex]. When the thrust is only 2203 N, the craft accelerates downward at 0.39 m/[tex]s^{2}[/tex]. To find the weight of the landing craft on Callisto's surface, we can use the given data from the two scenarios.

To solve, let's denote the mass of the landing craft as m, and the acceleration due to gravity on Callisto as g. Thus, the weight of the landing craft, which is the gravitational force, can be expressed as W = mg.

From the second scenario, we have:
F - W = ma
2203 N - mg = m(0.39 m/[tex]s^{2}[/tex])
Since the first scenario tells us that F = W when F is 3264 N, substituting back, we get mg = 3264 N. We therefore find the weight of the landing craft to be 3264 N on the surface of Callisto.

To calculate how far a 68 kg person could walk at 5 km/h based on the energy from an energy bar, you need to know the energy content of the bar. Then, you would estimate the energy expenditure during walking and use that to estimate the distance that person could cover.

Your question refers to energy and distance covered by a person walking at a certain speed, making it a topic of Physics. However, the computation of how far a 68 kg person can walk at 5 km/h, given a certain amount of energy (derived from an energy bar), requires more information.

We would specifically need to know the amount of energy provided by the energy bar. Once we have that, we can dive into understanding that energy consumption during physical activity, like walking, is determined by body mass and speed among other factors.

A common estimation of energy expenditure due to walking is made using the formula 0.1×weight(kg)×distance(km). After obtaining the energy content of the bar, we can rearrange that formula to find the distance: distance = energy/(0.1×weight). With that calculation, you could answer how far the person can walk based on the energy released by the bar.

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Answer:

The two are still synchronized but run slow

Explanation:

Time flows at a different rate for an object that is moving. The time of the object which is moving is running slower than an object which is stationary. Here, Albert is stationary so time will flow faster for him and for Henry who is moving time will flow slower. This phenomenon is called time dilation

[tex]\Delta t'=\frac{\Delta t}{\sqrt{1-\frac{v^2}{c^2}}}[/tex]

Where,

Δt is the time elapsed for the person who is moving

Δt' is the time elapsed for the person who is stationary

c = Speed of light = 3×10⁸ m/s

v = Velocity of the object which is moving

Answer: D

Explanation:  

The two are still synchronized but run slow.

The statement is false because wave speed is not computed by squaring the wave's amplitude. The speed of a wave is influenced by the medium's properties and is often the square root of an elastic property to an inertial property ratio.

The statement 'to calculate the wave speed of a wave square the amplitude of the wave' is false. Wave speed is not calculated by squaring the amplitude of the wave. Instead, wave speed is determined by the properties of the medium through which the wave is traveling and can generally be expressed as the square root of the ratio of an elastic property to an inertial property of the medium.

For example, the speed of sound in air is approximately given by 343.00 m/s at 20°C. The energy and power of a wave, on the other hand, are proportional to the square of the amplitude, but this is not used to calculate the wave's speed.

Therefore, the terms 'amplitude of a wave' and 'wave speed' refer to different aspects of wave properties and should not be confused with each other in physical calculations.

Complete Question:

True or false. To calculate the wave speed of a wave, square the amplitude of the wave.

Answer:

Option 2 and 3

Explanation:

When the net force on the car is zero, the acceleration is also zero.

Along horizontal direction, the net force is zero. It means the car is moving with fixed speed and same direction.

Along vertical direction, the weight of the car is balanced by the normal reaction.

When the car is parked, the weight of the car is balanced by the normal reaction.

The sprinter's final speed is calculated using Newton's second law and kinematic equations, resulting in a final speed of 7.43 m/s based on the provided force exerted and the time duration.

The question involves calculating the final speed and distance traveled by a sprinter, which is a physics concept involving Newton's second law of motion and the basic principles of kinematics. To find the sprinter's final speed, we use the relationship derived from Newton's laws that connects force, mass, acceleration, and velocity. Given that the sprinter exerts an average force of 650 N backward on the ground for 0.800 s, and has a mass of 70.0 kg, we can calculate the acceleration and then use it to find the final speed.

First, we calculate the acceleration using Newton's second law, F = ma. The force exerted on the ground is equal and opposite to the force exerted on the sprinter (Newton's third law), so:

Acceleration, a = F/m = 650 N / 70.0 kg = 9.29 m/s2

Then, we use the equation of motion, v = u + at, where u is the initial velocity (0 m/s, as the sprinter starts from rest), a is the acceleration, and t is the time. Substituting the values, we get the final speed:
Final speed, v = 0 + (9.29 m/s2 × 0.800 s) = 7.43 m/s

To solve this problem, we should remember that the formula for index of refraction is defined as:

n = c / v

or

n v = c

Where,

n = index of refraction

c = speed of light

v = speed of light in the medium

Since speed of light is constant, then we can simply equate the materials 1 and 2:

n1 v1 = n2 v2

Where the speed of light in the medium (v) can be expressed as:

v = w * f

Where,

w = wavelength of light

f = frequency of light

Therefore substituting this back into the relating equation:

n1  w1 f1 = n1  w2 f1

Since it is given that the light is monochromatic, w1 = w2, this further simplifies the equation to:

n1 f1 = n2 f2

f1 / f2 = n2 / n1                  (ANSWER)

The ratio of the frequency of light in two different materials can be found using their refractive indices and the equation n1*f1 = n2*f2.

The ratio of the frequency of light in two different materials is determined by their refractive indices.

In physics, the frequency of light can be related to the speed of light in different media using the index of refraction.

The equation n1*f1 = n2*f2 expresses the relationship between the frequencies of light in material 1 and material 2.

The ratio of frequencies f1/f2 of monochromatic light when moving from one material to another is 1, because the frequency of light remains constant across different media.

The student asks about the ratio of the frequencies f1 and f2 of monochromatic light going from one material with index of refraction n1 to another with index of refraction n2. This question pertains to the physics concept of refraction and properties of light as it travels through different media. The frequency of light does not change when it passes from one medium to another, as frequency is an intrinsic property of the wave that is independent of the medium. Therefore, the ratio of the frequencies f1/f2 is equal to 1, or f1=f2.

When waiting to turn left and a car is approaching from the opposite direction with a turn signal, you should wait until the other car starts its turn before making yours (a). This applies regardless of whether they signal a left or right turn.

In the situation where you are waiting to turn left into a small parking lot and a car is approaching from the opposite direction with a turn signal on, you need to exercise caution. It's important to note that you should wait until the other car starts its turn (a) before making your turn. This is applicable whether the driver is signaling for a left turn or a right turn. You should never make assumptions based on signal indicators as drivers might sometimes forget to turn them off or mistakenly leave them on.

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This question is just so simple. All we have to do to get the wavelength is to divide the length by the number of waves.

Wavelength = 20 cm / 80 waves

Wavelength = 0.25 cm / wave = 0.25 cm

Or if in meters, Wavelength = 2.5 x 10^-3 m

The solar eclipse is compared to the 1969 moon landing due to their significance in space and discovery, despite the time gap. Both events captivated the public and demonstrated advancements in technology and our understanding of the universe.

NASA scientist Madhulika Guhathakurta compared the solar eclipse to the 1969 moon landing because both events were significant in terms of space and discovery, despite occurring nearly 50 years apart. The moon landing was a historic achievement in human space exploration, and the solar eclipse, while not a human accomplishment, is a rare celestial event that offers valuable scientific insights. Both events captivated the public and showcased the advancements in technology and our understanding of the universe.

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