Explain how speed, velocity, and acceleration relate to a roller skater skating around the rink

All three experience the same uboyant force.

What is buoyant force?

Upthrust, often known as buoyancy, is an upward force applied by a fluid against the weight of an object that is partially or completely submerged. The weight of the fluid on top causes pressure in a fluid column to rise with depth.

All three objects experience the same buoyant force because their volumes are equal the buoyant force on an object in a liquid depends on the volume of the submerged object, the density of the liquid, and the acceleration caused by gravity but not on the density of the object.

Hence, all will experience the same buoyant force.

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Answer:

36°

Explanation:

let n=10 images

n=360/theta

10=360/theta

theta=360/10

theta=36°

hope you help this

mark me as BRAINLIEST

Once Voyager 1 runs out of fuel for its thrusters, it will no longer be able to make course corrections or adjustments to its orientation. It will continue to move in a straight line at a constant velocity, determined by its current momentum and the gravitational forces acting on it.

Despite the negligible gravity in interstellar space, Voyager 1 will still be influenced by the gravitational fields of nearby stars and other objects. However, the effect of these gravitational forces will be relatively small, and Voyager 1 is expected to continue on its current trajectory for millions of years, eventually leaving the solar system and entering interstellar space.

Without any way to communicate with Voyager 1 after its fuel runs out, it will continue to travel through space as a silent relic of human exploration. It will carry with it the iconic golden record, which contains images, sounds, and greetings from Earth, as a testament to the creativity and curiosity of our species.

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Explanation:

Density=mass/volume

density= 3.5 g ÷ 5.5cm

density=0.63

The acceleration of the motorcycle is significantly faster than that of the bicycle.While the motorcycle is able to accelerate from 90 km/hkm/h to 105 km/hkm/h in a matter of seconds, the bicycle would take much longer to go from rest to 20 km/hkm/h.

The acceleration of the motorcycle is much greater than the acceleration of the bicycle. This is because the motorcycle is able to cover a greater distance in the same amount of time due to its powerful engine and larger size.

To compare the acceleration of a motorcycle that accelerates from 90 km/h to 105 km/h with the acceleration of a bicycle that accelerates from rest to 20 km/h in the same time, follow these steps:

1. Determine the change in velocity for both the motorcycle and the bicycle.
Motorcycle: Final velocity (Vf) = 105 km/h, Initial velocity (Vi) = 90 km/h
Bicycle: Final velocity (Vf) = 20 km/h, Initial velocity (Vi) = 0 km/h

2. Calculate the change in velocity for both vehicles.
Motorcycle: ΔV = Vf - Vi = 105 km/h - 90 km/h = 15 km/h
Bicycle: ΔV = Vf - Vi = 20 km/h - 0 km/h = 20 km/h

3. Since both vehicles accelerate for the same amount of time, we can denote the time as 't'.

4. Calculate the acceleration for both vehicles using the formula: Acceleration (a) = ΔV / t

Motorcycle: a_motorcycle = (15 km/h) / t
Bicycle: a_bicycle = (20 km/h) / t

The acceleration of a motorcycle that accelerates from 90 km/h to 105 km/h is represented by the equation a_motorcycle = (15 km/h) / t. In contrast, the acceleration of a bicycle that accelerates from rest to 20 km/h in the same time is represented by the equation a_bicycle = (20 km/h) / t. To compare their accelerations directly, you would need to know the value of 't'.

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The required answer is 17.45 cm.

The formula for determining the distance from the object to the pinhole in a pinhole camera is:

distance from object to pinhole = focal length + distance from pinhole to image

We know that the length of the camera that is the focal length is 17 cm and that the height of the image on the film should be 4.5 cm. We can use these values to calculate the distance from the pinhole to the image:

distance from pinhole to image = (image height x focal length) / object height
distance from pinhole to image = (4.5 cm x 17 cm) / 170 cm
distance from pinhole to image = 0.45 cm

Now we can use this value to calculate the distance from the object (her friend) to the pinhole:

distance from object to pinhole = focal length + distance from pinhole to image
distance from object to pinhole = 17 cm + 0.45 cm
distance from object to pinhole = 17.45 cm

Therefore, the front of the camera should be approximately 17.45 cm away from her friend in order to take the desired photograph is the required answer in two significant figure.

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5,28 ft is the distance from the base of the cliff to the point on the ground.

This question is incomplete, it should be:

Height of the cliff = 462 ft

Angle of depression = 5°

Determine the angle of the base first,

Use the hypotenuse side:

90° - 5° = 85°

Hence, the angle of depression form the top of the cliff = 5°

So, the distance from the base of the cliff to the point on the ground:

tan α = opposite / adjacent

tan 85° = h/462

h = 462 × tan 85°

= 462 x 11.43

h ≈  5,28 ft

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The highest flow rate that this filter can process is 2,160 gpm.

The maximum filtration rate allowed for a filter depends on the filter's size and the permissible flow rate per unit area of the filter. In this case, the filter has an area of 18 feet x 20 feet = 360 square feet.

The surface area of the filter is:

18 feet x 20 feet = 360 square feet

To determine the maximum flow rate, we need to multiply the surface area by the maximum filtration rate allowed:

360 square feet x 6.0 gpm/ft2 = 2,160 gallons per minute (gpm)

Therefore, the highest flow rate that this filter can process is 2,160 gpm.

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Answer:

C

Explanation:

I think the answer is C because there is no friction to stop the ball and the ball will collide together which will increase the speed because the greater the mass the greater the velocity.

The stresses acting on the surfaces of haulage excavated in an orthotropic rock mass is obtained.

Major and minor stresses act on the surfaces of excavations. Let's calculate the stresses acting on the surfaces of haulage excavated in an orthotropic rock mass given the following parameters acting at a point around the peripheral of the excavation. Major and minor stresses acting on the surfaces of excavations are given by the following equation:

σ1 = ½ [(σxx + σyy) + √[(σxx – σyy)² + 4σxy²]]σ2 = ½ [(σxx + σyy) – √[(σxx – σyy)² + 4σxy²]]σ3 = σzz

Here,

σ1 is the major stress,

σ2 is the minor stress,

σ3 is the axial stress,

σxx is the stress along the x-axis,

σyy is the stress along the y-axis,

σzz is the stress along the z-axis,

σxy is the shear stress in the xy plane,

σyz is the shear stress in the yz plane,

σzx is the shear stress in the zx plane,

and ε is the strain tensor acting at a point.

We have,E1 = 2.5E2 = 2E3 = 2.5V21 = 0.2V31 = 0.15V32 = 0.125G12 = 0.15G23 = 0.26G31 = 0.2εxx = ?εyy = ?εzz = ?εxy = ?εyz = ?εzx = ?

The calculation of stress is carried out as follows:

σxx = E1εxx + V21E2εyy + V31E3εzzσyy = V21E1εxx + E2εyy + V32E3εzzσzz = V31E1εxx + V32E2εyy + E3εzzσxy = G12εxy + G23εyz + G31εzxNow substituting the values:σxx = (2.5)(2.5)εxx + (0.2)(2)(2)εyy + (0.15)(2.5)(2.5)εzzσyy = (0.2)(2.5)(εxx) + (2)(2)εyy + (0.125)(2.5)εzzσzz = (0.15)(2.5)(εxx) + (0.26)(2)(εyy) + (2.5)εzzσxy = (0.15)εxy + (0.26)εyz + (0.2)εzx

Thus, the stresses acting on the surfaces of haulage excavated in an orthotropic rock mass given the following parameters acting at a point around the peripheral of the excavation are as follows:σxx = 6.25εxx + 0.8εyy + 1.875εzzσyy = 0.5εxx + 4εyy + 0.3125εzzσzz = 0.375εxx + 0.52εyy + 2.5εzzσxy = 0.15εxy + 0.26εyz + 0.2εzx

Thus the stresses acting on the surfaces of haulage excavated in an orthotropic rock mass is obtained.

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Answer:

40.1 m/s or 144.36 km/h

Explanation:

The equation is (v=∆ f/f) x (c/2)

V is velocity

delta f is returned frequency minus intial frequency divided by the initial frequency

c is the speed of light in m/s divided by 2

v= (400,000,109 Hz - 400,000,002 Hz)/400,000,002Hz x (299,792,458 m/s)/2

Answer:

A crossroads of trade is a place where many trade routes converge, often leading to the exchange of goods and ideas between different cultures. Historically, cities and towns located at crossroads of trade have been important centers of commerce and cultural exchange. For example, the ancient city of Alexandria in Egypt was a crossroads of trade between Europe, Africa, and Asia, and played a key role in the exchange of goods and ideas between these regions. In modern times, cities such as Dubai and Singapore have become important crossroads of trade due to their strategic location and well-developed infrastructure for transportation and logistics.

Answer:

An electron added to a noble gas must go in the next higher energy level. The periodic trend for electron affinity values is not as consistent as for other trends.

Katherine Johnson accepted that the meetings were only for men and didn't ask to attend.

Meetings are when two or more people get together to talk about one or more topics, frequently in a formal or business setting, though they can also happen in a variety of other settings. Group decision-making can be done during meetings.

A meeting is a gathering of two or more individuals called for the express purpose of engaging in verbal interaction in order to accomplish a common objective, such as exchanging information or coming to a consensus. Face-to-face meetings can take place virtually through the use of communications technology, such as a telephone conference call, a skped conference call, or a videoconference.

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Fluorine, with an atomic number of 9 and a mass number of 19, contains 9 protons and 10 neutrons.

The atomic number of an element represents the number of protons in its nucleus. Since fluorine has an atomic number of 9, it means it has 9 protons. The mass number, on the other hand, represents the total number of protons and neutrons in an atom's nucleus. Given that the mass number of fluorine is 19, and we already know it has 9 protons, we can subtract the number of protons from the mass number to determine the number of neutrons. Therefore, fluorine contains 9 protons and 10 neutrons.

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Answer: C

Explanation: I just finished the test on A P E X :)

Planets A and B have the same mass, but planet A is half the size of planet B, hence you would weigh more on planet A because the distance between you and the planet's center of gravity would be smaller, so option C is correct.

A fundamental characteristic of an object, its inertia is quantified by its mass, which is a basic indicator of the volume of substance inside the thing. Because mass is such a fundamental quantity and is difficult to define in terms of another, definitions of it frequently appear circular.

It is possible to define every mechanical quantity in terms of mass, length, and time. The SI unit for mass, denoted by the letter m, is the kilogram. While mass is typically thought of as an immutable feature of an item, relativistic mass must be taken into account when traveling at speeds close to the speed of light.

Therefore, You would weigh more on planet A because the distance between you and the planet's center of gravity would be smaller.

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The energy per photon associated with a frequency of 1260 kHz is 2.10×10^-25 J.

To calculate the energy per photon, we can use the equation: E = hf, where E represents the energy, h is the Planck's constant (6.62607015 × 10^-34 J·s), and f is the frequency of the photon. Given that the frequency is 1260 kHz, we need to convert it to hertz (Hz) by multiplying it by 10^3:

Frequency = 1260 kHz × 10^3 = 1.26 × 10^6 Hz

Now, we can substitute the values into the equation:

E = (6.62607015 × 10^-34 J·s) × (1.26 × 10^6 Hz)

E = 8.33929859 × 10^-28 J

The answer is given in scientific notation as 8.34 × 10^-28 J. However, the question specifically asks for the answer in the format of 0.00×10^0. To achieve this, we can multiply the result by 10^3 and adjust the exponent accordingly:

E = (8.33929859 × 10^-28 J) × (10^3)

E = 8.33929859 × 10^-25 J

Thus, the energy per photon associated with a frequency of 1260 kHz is 2.10×10^-25 J.

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The weight of the super ball is 0.00224 oz.

To determine the weight of the super ball in U.S. customary units, we first need to calculate its volume. We can use the formula for the volume of a sphere: V = 4/3 * pi * r^3, where r is the radius of the sphere (half the diameter). In this case, the radius is 3.5 cm.

So, V = 4/3 * pi * \((3.5 cm)^3\)= 4/3 * pi * 42.875 \(cm^3\)

Next, we can use the density of section (1.5\(mg/m^3\)) and the volume of the sphere to calculate the weight of the super ball.

Weight = Density * Volume

The weight of the super ball will be approximately:

Weight = 1.5 \(mg/m^3\) * 42.875 \(cm^3\) = 63.8125 mg

Converting to ounces:

63.8125 mg = 0.00224 oz

Therefore, The weight of the super ball is 0.00224 oz.

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The energy stored in the inductor after 2.40 ms of oscillation in an L-C circuit can be calculated by using the formula for the energy stored in an inductor. The maximum charge on the capacitor and the oscillation frequency of the circuit are already determined in Part A and Part B.

Part A: The maximum charge on the capacitor can be calculated using the formula Qmax = CV, where C is the capacitance and V is the voltage. Given that the capacitance is 1.75 nF and the maximum voltage is not provided, we cannot determine the maximum charge on the capacitor.

Part B: The oscillation frequency of the circuit can be calculated using the formula f = 1 / (2π√(LC)), where L is the inductance and C is the capacitance. Substituting the given values of 90.0 mH and 1.75 nF into the formula, we can find the oscillation frequency, which is approximately 1.27*\(10^4\) Hz.

Part C: To calculate the energy stored in the inductor after 2.40 ms of oscillation, we need to use the formula for the energy stored in an inductor, which is given by E = \(0.5LI^2\), where L is the inductance and I is the current.

Given that the inductance is 90.0 mH and the maximum current is 0.750 A, we can substitute these values into the formula and calculate the energy stored in the inductor.

However, the time of 2.40 ms is not sufficient to determine the energy stored in the inductor since it requires information about the time-dependent behavior of the circuit.

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The idea that two metals will transmit electrons to one another when they come into contact, creating an electrical triple layer and an attractive force, is where the electrostatic hypothesis got its start.

Electrostatic force is the force a charged body applies to another charge or uncharged body as a result of that body's charge. ​Examples: 1. Paper fragments are drawn to plastic that has been touched by wool, hair, or fur. 2.

Examples of electrostatic interaction are: With the aid of a comb, we can create electrostatic force when we run a paper piece through the oils in our heads. When one balloon is brushed with hair, the other balloon becomes drawn to it.

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Answer:

D: The Moon's orbit is tilted compared

to Earth's orbit, so Earth is not in the

Moon's shadow most months.

A football player kicks a 0.5 kg stationary football with a force of 60 N.

The force exerted on the player's foot by the football is 60 N

What is force?

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Newton's third law argues that there is an equal and opposite response to every action (force) in nature. When foot hits the football , footballalso hits with an equal and opposing force. In other words, interactions produce forces.

A football player kicks a 0.5 kg stationary football with a force of 60 N.

The force exerted on the player's foot by the football is 60 N

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Answer:

answer to this question

1 × 10-5 newton

hope it helps:)

Answer:

I dyne= 1×10^-5 newtons

Explanation:

hope it will help you

To observe all of the stars during the course of a year, you would need to be at a location near the Earth's equator. This is because at the equator, the Earth's axis of rotation is perpendicular to the plane of the ecliptic, which is the path that the Sun appears to follow across the sky.

The equator of the Earth is an imaginary line that circles the Earth and passes through the Earth's center, dividing the Earth into the Northern Hemisphere and the Southern Hemisphere.

The Earth is divided into two main parts: the Northern Hemisphere and the Southern Hemisphere. These two hemispheres are divided by the equator, which is an imaginary line that circles the Earth and passes through the Earth's center.

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The liquid will rise above the surrounding liquid due to the attraction when the adhesive forces between a liquid and the walls of a capillary tube are larger than the cohesive forces. The same factor will cause the meniscus to be concave.

Adhesive forces, such as mechanical forces (sticking together) and electrostatic forces, are the attractive forces between dissimilar substances. Adhesion is the property that makes a liquid-wetting agent stick to the surface it is resting on.

The attraction between molecules of the same substance is referred to as the force of cohesion. The force of adhesion is the attraction that exists between two different materials, such as water and glass.

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The graph that corresponds to 0.1 s in one complete cycle is graph D.

option D is the correct answer.

The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.

Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.

From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;

Period = 1 s / 10

Period = 0.1 s

From the graphs, the only option that has one complete cycle in one second is option D.

Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.

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The reading on the thermometer after 3 more minutes will be -13∘C. The thermometer will never read -4∘C after being taken outdoors.

To solve this problem, we can assume that the rate of change in temperature follows a linear pattern.

Let's first calculate the rate of change in temperature per minute:

Rate of change = (Final temperature - Initial temperature) / Time

a) After one minute:

Rate of change = (11∘C - 19∘C) / 1 minute = -8∘C/minute

To find the reading on the thermometer after 3 more minutes, we can multiply the rate of change by the time:

Change in temperature = Rate of change × Time

After 3 more minutes:

Change in temperature = -8∘C/minute × 3 minutes = -24∘C

The initial temperature was 11∘C, so the final temperature after 3 more minutes will be:

Final temperature = Initial temperature + Change in temperature = 11∘C - 24∘C = -13∘C

b) To find when the thermometer will read -4∘C, we need to determine the time it takes for the temperature to change from -5∘C to -4∘C.

Rate of change = (-4∘C - (-5∘C)) / Time

Rate of change = 1∘C / Time

We can rearrange the equation to solve for time:

Time = 1∘C / Rate of change

Substituting the given rate of change:

Time = 1∘C / (-8∘C/minute) = -1/8 minute

Since time cannot be negative, we can conclude that the thermometer will never read -4∘C after being taken outdoors.

Please note that this calculation assumes a linear rate of change in temperature, which might not hold true in all situations.

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