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1 Which has the LEAST momentum?
Group of answer choices
a 2 kg ball moving at 8 m/s
a 750 g ball moving at 15 m/s
a 80 kg ball moving at 25m/s
a 12 kg ball moving at 1

The system that automatically reduces engine torque and applies brakes to wheels that have lost traction and begun to spin is called the Secondary Braking Control system (SBC). This system is designed to improve the vehicle's stability and control during acceleration, especially on slippery or uneven surfaces.

When the SBC detects a loss of traction on one or more wheels, it automatically reduces the engine torque to prevent the wheels from spinning. At the same time, it applies the brakes to the affected wheels to slow them down and help them regain traction. This action also transfers torque to the wheels that still have traction, which improves the overall stability and control of the vehicle.

The SBC is an important safety feature that helps prevent accidents and improves driver confidence in challenging driving conditions. It works in conjunction with other systems such as anti-lock brakes (ABS) and traction control to provide a comprehensive safety package for modern vehicles.

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Answer:

Since the energy goes up as the frequency increases, the energy is directly proportional to the frequency. Because frequency and wavelength are related by a constant (c) the energy can also be written in terms of wavelength: E = h · c / λ. When the energy increases the wavelength decreases and vice versa.

The star is moving away from Earth at a velocity of 1.8 x 106 m/s.

The Doppler Effect describes the shift in wavelength of a wave when the source is moving in relation to the observer. The shift can be observed in sound waves, light waves, and other waves.

The Doppler Effect can be used to determine the velocity of objects moving away from an observer, as in the case of stars moving away from Earth.

The velocity of a star moving away from Earth can be determined using the equation:

v = Δλ/λ x c, Where v is the velocity of the star, Δλ is the shift in wavelength of the spectral line, λ is the wavelength of the spectral line measured in the lab on Earth, and c is the speed of light (3.00 x 108 m/s).

In this case, the shift in wavelength of the spectral line is Δλ = 500.3 nm - 500 nm = 0.3 nm.

The wavelength of the spectral line measured in the lab on Earth is λ = 500 nm.

Plugging in these values to the equation above: v = Δλ/λ x cv = (0.3 nm / 500 nm) x (3.00 x 108 m/s) = 1.8 x 106 m/s.

Therefore, velocity of star 1.8 x 106 m/s.

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The ratio of the radii of the two species is 1:4.

We know that the magnetic field and the electric potential difference are the same for both species

.Therefore, the velocity of the particles will be the same for both X1 and X4, as the mass of the two particles is different.

The mass of X4 is four times that of X1, and the charge of X4 is also four times that of X1.

The mass and the charge are in the numerator and denominator of the formula for the radius of the path respectively.

Therefore, the ratio of the radii of the two species can be written as:

r1 / r4 = (mX1 * qX4) / (mX4 * qX1)

r1 / r4 = (mX1 * 4qX1) / (4mX1 * qX1)

r1 / r4 = 1/4

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Answer:

Energy transfer, I believe.

Explanation:

When the energy moves from one point to the other, this is known as energy transfer. Hence, option A is correct.

The capacity to perform work is known as energy in physics. Potential, kinematic, heat, electromagnetic, chemical, nuclear, and other different types are all possible. As energy is transferred of one body to another, there is also heat and work. Energy is always categorized after it has been transported based on its nature. As a result, heat transfer may result in thermal energy, while labor done may result in mechanical energy.

Motion is a common characteristic of all energy types. Whenever a body is in motion, for instance, it contains energy. Even when at rest, a tensioned object like a springs or bow has the ability to move; this is due to the structure of the object, which carries potential energy.

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Answer:

1.69 T

Explanation:

Applying,

F = BvqsinФ.................. Equation 1

Where F = Force, B = magnetic field, v = velocity, q = charge on an electron, Ф = angle between the electron and the field.

make B the subject of the equation,

B = F/(vqsinФ)............. Equation 2

From the question,

Given: F = 2.0×10⁻¹³ N, v = 7.4×10⁵ m/s, Ф = 90°

Constant: q = 1.60×10⁻¹⁹ C

Substitute into equation 2

B =  2.0×10⁻¹³/(7.4×10⁵×1.60×10⁻¹⁹×sin90°)

B = 0.169×10

B = 1.69 T

The wavelength of the broadcasted wave from the radio station is found to be 430m.

The broadcasting frequency of the radio station is 697 KHz. The relation between the frequency, wavelength and the speed of the wave is given as,

speed of wave = wavelength x frequency

C = λν

We can take the speed of the wave to be same as that f the speed of light to solve this problem.

Now, putting all the values,

3 x 10⁸ = 697 x 1000 x λ

λ = 430 m.

So, the wavelength of the broadcasted wave is 430m.

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Answer:

\(h=3.18\times 10^{-9}\ m\)

Explanation:

Given that,

The volume of a drop, \(V=10^{-10}\ m^3\)

The radius of the circular film, \(r=10^{-1}\ m\)

We need to find the thickness of the film.

We know that,

Volume, \(V=\pi r^2 h\)

So,

\(h=\dfrac{V}{\pi r^2}\\\\h=\dfrac{10^{-10}}{\pi \times (10^{-1})^2}\\\\h=3.18\times 10^{-9}\ m\)

So, the thickness of the file is equal to\(3.18\times 10^{-9}\ m\).

The volume flux inside the rectangular duct is 0.028 m³/s.

Volume flux, also known as volumetric flow rate, is a measure of the volume of fluid passing through a given area per unit time. It is commonly expressed in cubic meters per second (m³/s). To calculate the volume flux in the given scenario, we can use the formula:

Volume Flux = (Air flow rate) / (Cross-sectional area)

First, we need to calculate the cross-sectional area of the rectangular duct. The area can be determined by multiplying the length and width of the duct:

Area = (138 mm) * (346 mm)

To maintain consistent units, we convert the dimensions to meters:

Area = (138 mm * 10⁻³ m/mm) * (346 mm * 10⁻³ m/mm)

Next, we can calculate the air flow rate using the given information. The air flow rate is given as 17 N/s, which represents the mass flow rate. We can convert the mass flow rate to volume flow rate using the ideal gas law:

Volume Flow Rate = (Mass Flow Rate) / (Density)

The density of air can be determined using the ideal gas law:

Density = (Pressure) / (Gas constant * Temperature)

where the gas constant (R) is given as 28.5 m/K, the pressure is 112 kPa, and the temperature is 20 degrees Celsius.

With the density calculated, we can now determine the volume flow rate. Finally, we can divide the volume flow rate by the cross-sectional area to obtain the volume flux.

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Answer:

What is the pressure transmitted in the liquid on a hydraulic pump where an elephant with a weight of 40 000 N is placed on top of the large piston with an area of 40 m2. The small piston area is 4 m2.

If the depth of the ocean at a particular place is 1817.5m, the time it would take a sonar signal to travel from a ship to the ocean bottom and back again would depend on the speed of sound in seawater.

The speed of sound in seawater at a temperature of 15°C (59°F) is around 1,530 meters per second. Therefore, to find the time it would take for the sonar signal to travel from the ship to the ocean bottom and back again, we can use the formula: Time = (2 x Depth) / Speed of Sound.

As we know that the depth of the ocean at a particular place is 1817.5 meters. Therefore, we can find out the time it would take for the sonar signal to travel from the ship to the ocean bottom and back again by substituting these values into the formula:

Time = (2 x Depth) / Speed of Sound Time = (2 x 1817.5) / 1530Time = 2.38 seconds.

Therefore, it would take approximately 2.38 seconds for a sonar signal to travel from a ship to the ocean bottom and back again at that particular location in the ocean. It's important to note that this is just an estimate and the actual time may vary depending on factors such as the temperature, pressure, and salinity of the seawater.

The time it would take for a sonar signal to travel from a ship to the ocean bottom and back again would depend on the depth of the ocean and the speed of sound in seawater. Using the formula Time = (2 x Depth) / Speed of Sound, we can estimate the time it would take for the sonar signal to travel based on these factors. In this case, the depth of the ocean was 1817.5 meters and the speed of sound in seawater was 1530 meters per second, so the estimated time it would take for the sonar signal to travel was 2.38 seconds.

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In basin and range topography, the lowest areas are frequently occupied by a(n)  basin.

Basin and range topography is a geological feature characterized by alternating mountain ranges and elongated valleys or basins. The formation of this topography is attributed to the stretching and faulting of the Earth's crust, which leads to the uplift of mountains and the subsidence of adjacent basins.

The lowest areas in this type of topography are often occupied by basins, which are elongated depressions or low-lying regions. These basins typically collect sediment and water, forming flat or gently sloping landscapes. They can range in size from small valleys to extensive lowland areas.

The basins are important features of the basin and range topography and contribute to the unique landscape and hydrological characteristics of the region.

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The true statement about the reference point for determining motion is that "it is stationary"

WHAT IS A REFERENCE POINT:

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Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm maybe

The camp has provided cadets with a greater understanding of opportunities within the STEM field and how to get there in several ways:

1. Exposure to different STEM career paths: The camp has likely exposed cadets to a variety of STEM career paths. Through workshops, presentations, and possibly guest speakers, cadets would have learned about different job opportunities within the STEM field. This exposure helps them understand the range of possibilities available to them and allows them to explore various interests within STEM.

2. Hands-on activities and projects: The camp may have included hands-on activities and projects related to STEM fields. These activities give cadets the opportunity to apply their knowledge, develop practical skills, and gain a deeper understanding of the real-world applications of STEM concepts. By engaging in these activities, cadets can see the direct link between their academic learning and potential career paths in STEM.

3. Mentoring and networking: The camp may have provided opportunities for cadets to interact with professionals working in STEM fields. This could include mentorship programs or networking events where cadets can ask questions, seek guidance, and gain insights from professionals who have already established themselves in their respective careers. By connecting with these mentors and professionals, cadets can learn about the paths they took to get to where they are and receive valuable advice on how to achieve their own career goals in the STEM field.

4. Career planning and goal-setting: The camp likely included sessions on career planning and goal-setting. Cadets may have been introduced to resources and tools to help them develop a plan for their educational and career journeys. This could involve identifying the educational requirements, internships or research opportunities, and additional skills or certifications needed to pursue specific STEM careers. By setting clear goals and understanding the steps necessary to achieve them, cadets are better equipped to navigate their way through the STEM field.

Overall, this camp has provided cadets with a greater understanding of opportunities within the STEM field by exposing them to different career paths, providing hands-on experiences, facilitating mentorship and networking, and assisting in career planning and goal-setting. These opportunities help cadets explore their interests, gain practical skills, and develop a roadmap for their future STEM careers.

Answer:

If it has a mass of 5 kg its weight is 5 kg * 9.8 m/s^2 = 49 N

Weight in air = 49 N

Weight in water = 25 N

Buoyant force provided by water = 49 - 25 = 24 N

(a) The length of the time interval during which the bat and ball were in contact is 0.005 second.

(b) The average force exerted on the ball is 9,000 N.

(c) The magnitude of the change in momentum of the ball is 45 kgm/s.

The duration of the time in which the force act is calculated as follows;

Δt = t2 - t1

Δt = 0.005 s - 0.00 s

Δt = 0.005 s

The magnitude of the change in the momentum of the ball is calculated as follows;

J = Ft = ΔP

where;

ΔP = area of triangle between (0, 0.002) + area of rectangle (0.002, 0.004) + area of triangle

ΔP = ¹/₂(0.002 - 0.001)(15000)  + (15000)(0.004 - 0.002) + ¹/₂(0.005 - 0.004)(15000)

ΔP = 45 Ns

The average force exerted on the ball is calculated as follows;

F = ΔP / Δt

F = 45 Ns / 0.005 s

F = 9,000 N

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Answer

Its PO

Explanation:

I got it right on Edge.

Answer:

Explanation:

Given:

m = 5·10⁻²⁷ kg

V₁ = 2·10⁵ m/s

V₂ = 4·10⁵ m/s

D = 10cm = 0.10m

_______________

a - ?

The change in kinetic energy is equal to the work:

Ek₂ - Ek₁ = F·D

m·V₂² / 2 - m·V₁² / 2 = F·D

(m/2)·(V₂² - V₁²)  = F·D

Force:

F = (m/2)·(V₂² - V₁²) / D

F =   m·(V₂² - V₁²) / (2·D)

F = (5·10⁻²⁷)·( (4·10⁵)² - (2·10⁵))/ (2·0.10) ≈ 3·10⁻¹⁴ N

The radius of a standard rate turn for a plane moving at 240 m/s  is approximately 933 meters.

A standard rate turn in aviation refers to a turn in which an aircraft completes a full 360-degree rotation in 2 minutes, resulting in an angular speed of 3 degrees per second (180 degrees per minute). To calculate the radius of a standard rate turn for a plane moving at 240 m/s, we can use the formula:

Radius = V / (G × Tan(Bank Angle))

where:
- V is the velocity of the plane (240 m/s)
- G is the gravitational constant (approximately 9.81 m/s²)
- Bank Angle is the angle at which the aircraft is tilted during the turn.

First, we need to find the bank angle. Since we know that the angular speed is 3 degrees per second, we can use the following formula to find the bank angle:

Bank Angle = Arc Tan((V² × Angular Speed) / (G × 180))

Bank Angle = Arc Tan((240² × 3) / (9.81 × 180))
Bank Angle ≈ 14.7 degrees

Now that we have the bank angle, we can calculate the radius of the turn:

Radius = 240 / (9.81 × Tan(14.7))
Radius ≈ 933 meters

So, the radius of a standard rate turn for a plane moving at 240 m/s is approximately 933 meters.

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The weather is affected by:

The amounts or characteristics of the weather that are frequently measured are known as its elements.

The six major elements of the weather are temperature, air pressure, wind, humidity, precipitation, and cloudiness. The amount of water vapour in the air at any one time is called the humidity. Humidity is influenced by the target system's temperature and pressure.

hence, the correct options are: Humidity, Wind speed and direction, Temperature, Air Pressure.

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hope it helps!

The kinetic energy (KE) of the emitted photoelectrons in the Sodium surface will be: lower compared to the KE of the photoelectrons in the Potassium surface.

The work function of a material is the minimum amount of energy required to remove an electron from its surface. If the work function of Sodium is greater than that of Potassium, it means that Sodium requires more energy to remove electrons compared to Potassium.

When photons of the same wavelength are incident on both surfaces, the energy of the photons is given by E = hf, where h is Planck's constant and f is the frequency of the photons (related to the wavelength).

For the photoelectric effect to occur, the energy of the incident photons must exceed the work function of the material. Since Sodium has a higher work function than Potassium, it will require photons with higher energy to exceed its work function and emit photoelectrons.

Therefore, the photons incident on the Sodium surface, despite having the same wavelength as those incident on the Potassium surface, will have lower energy. As a result, the kinetic energy of the emitted photoelectrons in the Sodium surface will be lower compared to the kinetic energy of the photoelectrons in the Potassium surface.

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normal force=mass*gravitational force

normal force=40*0

normal force=40

Answer:

Option C is the correct option.

Explanation:

Given,

Force = 600 N

Distance = 5 meters

Work = ?

Now,

Work = Force \( \times \) distance

\( = 600 \times 5\)

Calculate the product

\( = 3000 \: \) Joule

Hope this helps...

Good luck on your assignment..

Answer:

third option down

Explanation:

The type of profession that does not need a college education is personal trainer.

Personal trainer is the type of profession that does not need a college education because the personal trainer is not related to any educational subject. This profession can be learned from a trainer not from the teacher in the school or college. Personal trainer is responsible for maintaining the strengths and remove the weaknesses through creating workout plans. It provides physical and mental guidance and also monitor progress of their customer on a regular basis..

So we can conclude that the type of profession that does not need a college education is personal trainer.

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