A plane is dropping provisions to a village.  If they drop a crate of supplies and are moving sideways at a speed of 180 mph, where is the most unsafe place for the villagers to stand if they want to avoid getting hit?

A.directly under the plane as it drops the supplies

B.ahead of the plane as it drops the supplies

C.behind the plane as it drops the supplies

D.inside of the plane as it drops the supplies

need a answer please​

Temperature is the degree of hotness or coldness of an object or substance. The SI unit of temperature is Kelvin."97%": The question suggests that a reaction must be run at a specific temperature to achieve 97% yield or completion. Yield refers to the amount of product obtained from a reaction.

To achieve 97% yield or completion, the reaction must be run at a specific temperature. Temperature plays an essential role in chemical reactions since it affects the rate of reaction, activation energy, and equilibrium. The temperature at which a reaction runs optimally, producing the most product, is known as the reaction's optimum temperature. As a result, the temperature must be controlled during a chemical reaction.To achieve 97%, the reaction must be run at a specific temperature.

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Given:

The mass of the car is: m = 873 kg

The initial speed of the car is: vi = 0 m/s (as initially, the car is at rest)

The final speed of the car is: vf = 35 m/s

The time over which the speed of car increases is: t = 5 s

To find:

The force exerted on the car.

Explanation:

The acceleration of the car can be calculated by using the following equation.

Here, a is the acceleration of the car.

Substituting the values in the above equation, we get:

The acceleration of the car is 7 m/s² in an eastward direction.

Now, using Newton's second law of motion, the force exerted on the car can be calculated as:

Substituting the values in the above equation, we get:

The force exerted on the car is 6.111 kN. The direction of force is the same as the direction of the car. Thus, the direction of the force is in an eastward direction.

Final answer:

The force exerted on the car is 6.111 Kilo-Newtons (kN) eastward.

When two vectors have the same direction, they can be added and the direction of the resultant is the same as the direction of the vectors. Additionally, the magnitude of the resultant is simply the sum of the corresponding magnitudes of the vectors.

Therefore, the answer is:

1) The resultant is the sum of the two displacements having the same direction as the original vectors.

The waves on a vibrating guitar string and the sound waves the guitar produces in the surrounding air. The string waves and the sound waves must have the same frequency and wavelength

The distance between consecutive crests of a wave, particularly the points of an electromagnetic wave is known as its wavelength.

When a wave go from one medium to another medium then the velocity, and Amplitude changes. But there is no change in wavelength as well as the frequency of the wave .

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I think there was momentum conserved

Explanation: I took the test

The potential energy of the 17.5 kg dodo bird on  25 meters  is  4287.5 Joule.

Potential energy is a form of stored energy that is dependent on the relationship between different system components.

When a spring is compressed or stretched, its potential energy increases. If a steel ball is raised above the ground as opposed to falling to the ground, it has more potential energy.

The potential energy of the  17.5 kg dodo bird is = mass × acceleration due to gravity × height

= 17.5 kg × 9.8 m/s² × 25 meter

= 4287.5 Joule.

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Answer:

The buoyant force is 9.8 N.

Explanation:

The buoyant force acting on the material is called upthrust, and can be determined as;

Upthrust = density of liquid x volume of object x gravitational force

So,

density = \(\frac{mass}{volume}\)

⇒ mass = density x volume

             = 4230 x 0.001

             = 4.23

mass of the material = 4.23 kg

But,

weight = mass x gravitational force

weight = 41.5 N, and mass = 4.23 kg, then;

41.5 = 4.23 x g

g = \(\frac{41.5}{4.23}\)

  = 9.811

g = 9.8 m/\(s^{2}\)

Upthrust = 1000 x 0.001 x 9.81

              = 9.81 N

The buoyant force is 9.8 N.

By using the thrust force, the acceleration is  0.001 m/s².

We need to know about force to solve this problem. According to second Newton's Law, the force applied to an object will be proportional to mass and acceleration. Hence, it can be written as

F = m . a

where F is force, m is mass and a is acceleration

From the question above, we know that

F = 1 N

m = 1000 kg

By substituting the given parameters, we can calculate the acceleration

F = m . a

1 = 1000 . a

a = 1/1000

a = 0.001 m/s²

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Answer:

Below :)

Explanation:

It is the powerhouse of the cell and creates chemical energy.

The wavelength of the photon is 377nm.

The Balmer series is the series that begins or ends at n=2. It is one of the series of the hydrogen spectrum.

Now;

1/λ = RH(\(\frac{1}{n_{2} ^{2} }\) - \(\frac{1}{n_{1} ^{2} }\))

λ = Wavelength

RH = Rydberg constant for hydrogen

\(n_{2\) = final energy level

\(n_{1}\) = initial energy level

1/λ = 1.097 * 10^7(1/2^2 - 1/12^2)

1/λ = 1.097 * 10^7(0.25 - 0.0069)

λ = 3.77 * 10^-7 m or 377nm

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Answer:

He needs to enroll himself in CMMA. This company help young students obtain a well future in Construction Science.

Answer:

acceleration = 0.2 m/s/s

Explanation:

initial velocity u = 14

final velocity v = 20

time = 30

acceleration = ?

v = u + at

20 = 14 + 30a

30a = 6

a = 0.2 m/s/s

Answer:

For the aceleration we have:

V = Vi + a * t

Being:

V = 20 m/s

Vi = 14 m/s

a = ?

t = 30 s

Then, lets replace acording the formula:

20 m/s = 14 m/s + a * 30 s

Clear "a":

a = (20 m/s - 14 m/s) / 30 s

a = (6 m/s) / 30 s

a = 0,2 m/s²

The aceleration of the car is 0,2 meters per second squared.

The body composition test that would be the best to measure the effects of a vitamin D supplement and a 6-month weight-training program in teenage girls is Dual-energy X-ray absorptiometry (DEXA) scan.Dual-energy X-ray absorptiometry (DEXA) scan would be the best to measure the effects of a vitamin D supplement and a 6-month weight-training program in teenage girls.

It is one of the most accurate ways to measure body composition as it can differentiate between muscle, bone, and fat tissues within the body. A DEXA scan provides detailed information about fat and lean mass distribution throughout the body. It can also show changes in bone density that might occur as a result of increased physical activity and/or supplementation with vitamin D.

If vitamin D levels are insufficient in teenage girls, they may be more prone to stress fractures and other bone-related injuries. Furthermore, resistance training programs can help improve bone density and reduce the risk of injury. This is why measuring body composition changes in teenage girls after a vitamin D supplement and weight training program is essential.

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Answer:

vibrates, and they carry energy from one place to another. Look at the sound wave and the water wave. vibrating electric charges and can travel through space where matter is not present. to particle, electromagnetic waves travel by transferring energy between vibrating electric and magnetic fields.

The true statements are:Jupiter's Great Red Spot is in the southern hemisphere.The fastest wind speed recorded in our solar system is on Neptune.

Among the given statements, only two are true. Jupiter's Great Red Spot, a massive storm, is indeed located in the southern hemisphere of the planet. The Great Red Spot is a prominent feature on Jupiter, visible as a giant swirling storm system. On the other hand, the fastest wind speed recorded in our solar system, reaching speeds of up to 2,100 kilometers per hour (1,300 miles per hour), is found on Neptune.

The strong winds on Neptune contribute to its dynamic atmosphere and the formation of features like the Great Dark Spot. The remaining statements about Pluto, Saturn's moon Enceladus, and Uranus are not true according to our current understanding.

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The wavelength in air at room temperature associated with a frequency of 15.0 kHz is approximately 20 meters.

Sound waves propagate through a medium, such as air, and their wavelength is the spatial distance between consecutive points of identical phase.

The speed of sound in air at room temperature is approximately 343 meters per second. To find the wavelength, we can use the formula:

wavelength = speed of sound / frequency

In this case, the frequency is given as 15.0 kHz, which is equivalent to 15,000 Hz. Substituting the values into the formula, we get:

wavelength = 343 m/s / 15,000 Hz

Calculating this, we find that the wavelength is approximately 0.0229 meters or 22.9 millimeters. Therefore, the wavelength in air at room temperature associated with a frequency of 15.0 kHz is approximately 20 meters.

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A force vector with magnitude 750 N and angle 30⁰ can be written as a Cartesian vector as: F = 375√3 i + 375 j

A vector can be written as its x-component and y-component.

Suppose the angle of a vector F with the positive x-axis is θ, then its components are given by:

Fx = F cos θ

Fy = F sin θ

Then,

F = Fx i + Fy j

  = F cos θ i + F sin θ j

In the given problem, θ = 30⁰, F = 750.

Hence,

Fx = 750 cos 30⁰

    = 750 (1/2)√3 = 375√3

Fy = 750 sin 30⁰

   = 750 (1/2) = 375

Thus, the vector can be written as a Cartesian vector:

F = 375√3 i + 375 j

Your question is incomplete, most likely your question was:

Express the force as a Cartesian vector. F 750 N. The angle of the force vector with the horizontal is 30⁰.

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Therefore, the skydiver will be falling at a speed of 97 m/s six seconds after opening the chute.

Given that a skydiver of mass 100 kg opens his parachute when he is going at 25 m/s and the parachute experiences 1200 N of air resistance. We need to calculate how fast the skydiver will be falling 6 seconds after opening the chute.The formula for calculating the force of air resistance on a body is given by:

\(f_air = 1/2 * rho * A * Cd * v^2\)

Where f_air is the force of air resistance, rho is the density of air, A is the cross-sectional area of the object, Cd is the drag coefficient of the object and v is the speed of the object.

Here, we know the force of air resistance experienced by the skydiver as 1200 N. Therefore, we can write:

\(1200 = 1/2 * rho * A * Cd * 25^2A\)

skydiver free-falls with an initial speed of 25 m/s after he opens his parachute. Since we know the force of air resistance, we can calculate the acceleration experienced by the skydiver as:

F = ma => a

= F/m => a

= 1200/100 => a

= 12 m/s^2

We know the time duration for which the skydiver falls as 6 seconds.

Therefore, we can calculate the final velocity of the skydiver using the following formula:

v = u + at

where, v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time duration.

Substituting the given values, we get:

v = 25 + (12*6) => v

= 97 m/s

Therefore, the skydiver will be falling at a speed of 97 m/s six seconds after opening the chute.

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Answer: The answer would be 10

Explanation:

Answer:

mass and distance

Explanation:

hope this helped

The extra energy allows the molecules to convert states of molecules.

When the temperature is increased , the body or particle is said to be heating.

The water in this pot is in the process of changing from a liquid to a gas. Thermal energy is still being added to the water as it vaporizes, but its temperature and the motion of its particles are not increasing.

When the liquid is converted to gas, the temperature reaches the boiling point of water. After boiling, the heat added up will only make the particles to convert its phase and go away in then atmosphere.

Thus, extra energy added helps molecules of water to change its state from liquid to solid.

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Answer:CADB

Explanation:

Answer:

Student 2 (B)

Explanation:

ignore the explanation I need 20 characters to add an answer

Answer:

\(||\vec E_A||=1.11446 \times 10^6 \ \frac{N}{C}\), where the vector arrow will point from the charge towards point A.

Conceptual:

What is an electric field?

An electric field is a physical field produced by charged particles, these electric fields have the ability to exert forces on other charged particles. The following formula can be used to find the electric field (as a vector) at a point in space. "k_e" is Coulomb's constant and "\(\hat r\)" indicates the direction vector that point from the charge towards the field you are trying to calculate.

\(\boxed{\left\begin{array}{ccc} \text{\underline{Equation for Electric Field:}} \\\\\ \vec E=\frac{k_eq}{r^2} \hat r \\k_e=8.99 \times 10^9\frac{Nm^2}{C^2} \end{array}\right }\)

Explanation:

Given:

\(q=6 \times 10 ^{-6} \ C\\\\r=0.22 \ m\)

Find:

\(\vec E_A=?? \ \frac{N}{C}\)

\(\vec E_A=\frac{k_eq}{r^2} \hat r\\\\\Longrightarrow \vec E_A=\frac{(8.99 \times 10 ^9)(6 \times 10 ^{-6})}{(0.22)^2} \cdot\frac{ < 0,-0.22 > }{\sqrt{(0)^2+(-0.22)^2} } \\\\\Longrightarrow \vec E_A= 1.11446 \times 10^6 \cdot < 0,-1 > \\\\\Longrightarrow \vec E_A= < 0,-1.11446 \times 10^6 > \frac{N}{C} \\\\\Longrightarrow||\vec E_A||=\sqrt{(0)^2+(-1.11446 \times 10^6\))^2} \\\\\therefore \boxed{\boxed{||\vec E_A||=1.11446 \times 10^6 \ \frac{N}{C}}}\)

Thus, the electric field strength at point A is found. The vector arrow will point from the charge, q, towards point A.

Answer:

The hyperactivity of these electrons give magnets the ability to attract and repel

The torque required to give an object an angular acceleration of 1.40 rad/s2 if it is rotated about the x axis is 1.4 N*m.

The torque is given by the formula:

T = I * α

where T is the torque, I is the moment of inertia, and α is the angular acceleration.

In this case, the moment of inertia is equal to the mass of the object * the radius of the object squared.

\(I = m * r^2\)

If the mass of the object is 1.0 kg and the radius of the object is 1.0 m, then the moment of inertia is 1.0 kg*m^2.

Plugging in the values for T, I, and α, we get the following:

T =\(1.0 kg*m^2 * 1.40 rad/s^2 = 1.4 N*m\)

Therefore, the torque required to give an object an angular acceleration of 1.40 rad/s2 if it is rotated about the x axis is 1.4 N*m.

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A) Jupiter. Among the given options, Jupiter is the planet that contains the majority of the mass of all the planets in our solar system.

Jupiter is the largest planet and has a significantly greater mass compared to the other planets. Its mass is approximately 2.5 times the combined mass of all the other planets combined.

Jupiter's massive size and composition, primarily consisting of hydrogen and helium, contribute to its high mass. Its strong gravitational pull has a significant influence on the dynamics of the solar system, affecting the orbits of other nearby celestial bodies.

Saturn, while also a large planet, has a lower mass than Jupiter. Earth, Venus, and Uranus have even smaller masses compared to both Jupiter and Saturn. Therefore, the correct answer is A) Jupiter.

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