Which activity is best described as a scientific endeavor?
A. Using scientific knowledge to improve erosion control structures
B. Designing structures to help prevent erosion
C. Developing plans to help reduce the effects of erosion of cropland
D. Performing experiments to understand the causes of erosion
SUBMIT

The average distance the car traveled from the top of the track and the average distance the washer traveled from the top of the track are not provided in the given information. Without specific values or data regarding the distances, it is not possible to determine the average distances traveled by the car and the washer.

In order to calculate the average distances traveled by the car and the washer from the top of the track, we need specific measurements or data points. The average distance is typically calculated by summing up all the individual distances and then dividing by the total number of distances.

Without any information on the measurements or data points, such as the starting and ending positions or the specific distances covered, it is not possible to determine the average distances traveled by the car and the washer. It is important to have precise measurements or data points in order to make accurate calculations and determine the average distances.

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Answer:

Explanation:

Quantum mechanics tells us that light can behave simultaneously as a particle or a wave. However, there has never been an experiment able to capture both natures of light at the same time; the closest we have come is seeing either wave or particle, but always at different times.When UV light hits a metal surface, it causes an emission of electrons. Albert Einstein explained this "photoelectric" effect by proposing that light – thought to only be a wave – is also a stream of particles

Why is light considered a wave and a particle?

Light behaves mainly like a wave but it can also be considered to consist of tiny packages of energy called photons. Photons carry a fixed amount of energy but have no mass. They also found that increasing the intensity of light increased the number of electrons ejected, but not their speed

Answer:

P(ressure) = d g h = density * gravity * height

P = 13600 * 9.8 * .25 = 33,300 Pa

Check:    1 atm = 76 cm = 760 mm height = 1.01 * 10E5 Pa

h = 1.01 * 10E5 / 9.8 * 13600 .758 m = 758 mm for 1 atm

250 / 758 = 1/3 atmosphere  = 33,700 Pa   close enough for estimates

(the pressure requested is 1/3 atmosphere where 1 atm = 760 mm Hg)

Answer:

leaf and a balloon is the correct answer

Answer:

c

Explanation:

Answer:

20kg

Explanation:

ΣF = ma

500N = 25m

m = 20kg

Answer:

I think it would be muscle

Explanation:

bones strengthened by calcium

aerobics is more of a gymnastical exercise

leaving a muscle strengthen

Answer:

Technically all 3

Explanation:

Include activities that make their hearts beat faster, build muscles (like climbing or doing push-ups), and strengthen bones (like running or jumping).

Traditional pushups are beneficial for building upper body strength. They work the triceps, pectoral muscles, and shoulders. When done with proper form, they can also strengthen the lower back and core by engaging (pulling in) the abdominal muscles. Pushups are a fast and effective exercise for building strength.Jun 22, 2018

Aerobic exercise (also known as cardiovascular exercise) builds your endurance. Anaerobic exercise typically means activities such as weightlifting and push-ups and sit-ups, which builds muscle and physical strength through short bursts of strenuous activity.

Answer:

36mm maybe sooo ok ......hehe

Answer:

false

Explanation:

a longer wavelength means a lower frequency, and a shorter wavelength means a higher frequency.

copper wire is the example of superconductor

Answer:

The Answer is gonna be B. The normal force (magnitude and direction)

Answer:

solution given ;

mass[m]=55kg

acceleration due to gravity [g]=10m/s²

weight[W]=mg=55×10=550 Newton

Answer:

which language is these

Explanation:

we only use english , Hindi ,tamil , bengali and Malayalam

please tell us that it is which language. From that we will slove this

Answer:

a = vf-vi / t

a = (54 km / h-36 km / h) / 2

a = 18/2

a = 9ms⁻²

Answer:

the force is very strong between

You have been informed by the carrier that your volume weight ratio is 1 m3 equals 1,000 kg. the chargeable weight for the following is  97,495 kg.

To calculate the chargeable weight for the given scenario, we need to consider the dimensions and weight of each crate. Each crate has dimensions of 6 feet in length, 7.5 feet in width, and 15 feet in height, and a weight of 750 kg.

First, we convert the dimensions of each crate from feet to meters. Since 1 foot is equal to 0.3048 meters, the dimensions become 1.83 meters in length, 2.29 meters in width, and 4.57 meters in height.

Next, we calculate the volume of each crate by multiplying the length, width, and height:

Volume = 1.83 m * 2.29 m * 4.57 m = 19.499 m^3

Since we have 5 crates, we multiply the volume of each crate by 5 to get the total volume:

Total Volume = 19.499 m^3 * 5 = 97.495 m^3

According to the given volume weight ratio of 1 m^3 equals 1,000 kg, the volume weight of the shipment is:

Volume Weight = 97.495 m^3 * 1,000 kg/m^3 = 97,495 kg

Finally, we compare the actual weight of each crate (750 kg) to the volume weight (97,495 kg) and choose the higher value as the chargeable weight. In this case, the chargeable weight for the shipment would be 97,495 kg.

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For a current is passing through a straight wire, the Magnetic field is mathematically given as,

B=5.535*10^5T.

Generally, the equation for the Magnetic field  is mathematically given as

\(B=\frac{\mu i}{ 2 \pi r}\)

Therefore

\(B=\frac{4 \pi *10^{-7}*4.2.28}{2 \pi (1.6*10^-2)}\)

B=5.535*10^5T

In conclusion, the magnetic field

B=5.535*10^5T

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Answer:

Force = 533.33N

Explanation:

Given the following data;

Power = 40000watt

Velocity = 75m/s

To find the force;

\( Power = force * velocity \)

Making force the subject of formula, we have;

\( Force = \frac {Power}{velocity}\)

\( Force = \frac {40000}{75} \)

Force = 533.33N

(b) For a projectile launched horizontally, the vertical component of its velocity is zero.

When a projectile is launched horizontally, it means that it has an initial velocity only in the horizontal direction, while there is no initial velocity in the vertical direction. As a result, the vertical component of the velocity is zero.

The motion of a projectile can be separated into horizontal and vertical components. The horizontal velocity remains constant throughout the motion, as there are no external horizontal forces acting on the projectile (assuming negligible air resistance).

On the other hand, the vertical motion of the projectile is influenced by the force of gravity. While the horizontal motion continues at a constant velocity, the projectile experiences a downward acceleration due to gravity. This causes the projectile to follow a curved path known as a parabola.

During the motion, the vertical component of the velocity changes due to the influence of gravity. It starts at zero when the projectile is launched, then continuously increases in the downward direction until reaching the maximum point of the projectile's trajectory. After that, the vertical component of the velocity gradually decreases as the projectile descends. Therefore, the correct answer is (b) – the vertical component of the velocity is zero for a horizontally launched projectile.

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When two identical masses are attached by a light string that passes over a frictionless pulley, the system is in equilibrium. The tension in the string on each side of the pulley is equal to the weight of each mass.

Based on the given information, we have two identical masses connected by a light string that passes over a small pulley. The table and pulley are both frictionless.

Since the masses are moving, we can assume that there is some force acting on them. In this case, the force is provided by the difference in tension in the string on either side of the pulley.

To solve the problem, we need to consider the forces acting on the masses. The weight of each mass is acting downward, and we can denote it as mg, where m is the mass and g is the acceleration due to gravity.

Since the masses are identical, the weight of each mass is the same, so the tension in the string on each side of the pulley is also the same.

Let's assume that mass 1 is on the left and mass 2 is on the right. The force of tension in the string on the left side of the pulley is equal to the weight of mass 1, which is mg.

The force of tension in the string on the right side of the pulley is equal to the weight of mass 2, which is also mg.

Now, since the masses are identical, the forces of tension are equal in magnitude but opposite in direction. Therefore, the net force acting on the system is zero, resulting in a balanced system.

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The change in the kinetic energy of the calcium ion's is 6.4 x 10⁻¹⁶ J.

The change in the kinetic energy of the ion's which accelerated through the given potential difference is calculated as follows;

ΔK.E = qV

where;

Substitute the given parameters in the above equation and solve for change in kinetic energy.

ΔK.E = (2e)V

ΔK.E = (2 x 1.6 x 10⁻¹⁹) x (2.0 x 10³)

ΔK.E = 6.4 x 10⁻¹⁶ J

Thus, the change in the kinetic energy of the calcium ion's is 6.4 x 10⁻¹⁶ J.

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The light from the green glow stick held by the Olympic sprinter will appear redshifted.

The phenomenon of redshift occurs when the source of light is moving away from the observer. In this case, as the sprinter is running towards you, the distance between you and the glow stick is decreasing over time. This decrease in distance causes a Doppler shift in the frequency of the light emitted by the glow stick.

Since the light is redshifted, its wavelength increases and the frequency decreases compared to its original emitted frequency. As a result, the light that reaches your eyes appears more towards the red end of the visible spectrum.

It is important to note that the color of the glow stick itself remains the same, but due to the relative motion between the source (the sprinter) and the observer (you), the light undergoes a change in frequency and appears redshifted.

This phenomenon is similar to the redshift observed in cosmology, where the light from distant galaxies appears to be redshifted due to the expansion of the universe.

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Radio/TV waves has the lower energy than microwaves.

The volume of the air that we have from the question is 829 L

The ideal gas equation, also known as the ideal gas law, is a fundamental equation in thermodynamics that describes the relationship between the pressure (P), volume (V), temperature (T), and number of moles (n) of an ideal gas.

We know that;

PV = nRT

P = pressure

V = volume

n = Number pf moles

R = gas constant

T = Temperature

Then;

Number of moles of the air = 1000 g/29 g/mol

= 34.5 moles

Then;

V = nRT/P

V = 34.5 * 0.082 * 293/1

V = 829 L

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Answer:

Frequency of a wave does not change as it passes from one to medium to another.

Explanation: PLS BRAINLIEST

Dipole orientation B generates the most magnetic torque. Because the dipole moment vector is perpendicular to the magnetic field vector in direction B, the maximal torque is m x B, where m is the dipole moment and B is the magnetic field.

C has the largest potential energy. In orientation C, the dipole moment vector parallels the magnetic field vector. Potential energy is exactly proportional to dipole moment alignment with the magnetic field, hence the parallel alignment in orientation C has the largest potential energy.

Orientation C takes the most magnetic field work to spin a horizontal magnetic dipole to the three locations indicated. The dipole moment is already parallel to the magnetic field in orientation C. The magnetic field must overcome dipole resistance to rotate it.

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Explanation:

las respuestas están en la foto de arriba

The violet color has a frequency of 7.24 x (10)^14 / sec based on the wave length provided.

A waveform signal that is carried in space or down a wire has a wavelength, which is the separation between two identical places (adjacent emblems) in the consecutive cycles. This length is typically defined in wireless systems in metres (m), centimeters (cm), or millimeters (mm) (mm).

we know that, f = frequency = 1/wavelength = c/λ

where c = speed of light = 299 792 458 m / s or 3 x 10^{8} m/s

and given wavelength ( λ)=414 nm

1 nm = 10^{-9} m

so, λ= 414 x 10^{-9} m

therefore f= frequency= 7.24 x (10)^14 / sec.

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\(\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}\)

Actually Welcome to the concept of surface areas and Volumes.

When the radius is 'r', we get as,

V = 4/3*(π)(r^3)

when the radius is tripled that is '3r' , we get as,

V' = 4/3 (π)(3r)^3

V' = 27*(4/3(π)(r^3))

V' = 27 V

hence the new volume, when radius is tripled, is 27 times greater than the old sphere.

The final speed of the motorcycle is: 67 m/sec

Velocity is the pace and direction of an item's movement, whereas speed is the time rate at which an object is travelling along a route. In other words, although velocity is a vector, speed is a scalar quantity.

Given that,

initial speed of the motorcycle, u=25 m/sec

Acceleration of the motorcycle, a = 7 m/sec²

According to the equation of motion,

v = u + at

v = 25 m/sec + (7m/sec²) × (6 sec)

v = 67 m/sec

Thus, final speed of the motorcycle is: 67 m/sec

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