which of the following statements about astronauts exploring the moon are true select all that apply sciense world

Answer:

a. The speed of the helicopter at the moment the package is dropped is approximately 15.519 m/s

b. The position of the package 2s after it is dropped is (31.038 m, -9.8 m)

c. The time of flight of the food package is approximately 5.105 seconds

d. The horizontal distance covered is approximately 79.22 m

Explanation:

The given parameters are;

The height at which the helicopter is flying = 125 m

The magnitude of the velocity of the package after 2 seconds, v = 25 m/s

a. The vertical velocity of the package, \(v_y\), is given as follows;

\(v_y\) = \(u_y\) + g·t

Where;

\(u_y\) = 0 m/s for the dropped food package

t = The duration of the package in the air = 2 s

g = The acceleration due to gravity = 9.8 m/s²

Therefore;

\(v_y\) = g·t = 9.8 m/s² × 2 s = 19.6 m/s

We have,  \(v = \sqrt{v_x^2 + v_y^2}\),

Where;

vₓ = The horizontal velocity of the food package = The horizontal speed of the helicopter

therefore, \(v_x = \sqrt{v^2 - v_y^2}\), which gives;

\(v_x = \sqrt{v^2 - v_y^2} = \sqrt{25^2 - 19.6^2} \approx 15.519 \ m/s\)

The speed of the helicopter at the moment the package is dropped ≈ 15.519 m/s

b. The vertical if the package after 2 s is given as follows;

The vertical position of the package after 2 s is given by the kinematic equation, h = 1/2·g·t² = 1/2 × 9.8 m/s² × 2 s = 9.8 m

The food package is located 9.8 m vertically below the point where it is dropped

The horizontal position, x, of the package after 2 s is given by the following kinematic equation, x = vₓ × t

Therefore, x = 15.519 m/s × 2 s ≈ 31.038 m

The coordinates of the location of the package 2 seconds after it is dropped is (31.038 m, 9.8 m)

c. The time of flight, \(t_{tot}\), of the food package which is the time it takes the package to reach the ground from 125 m, is given as follows;

\(t_{tot} = \sqrt{\dfrac{2 \cdot h}{g} } = \sqrt{\dfrac{2 \times 125 \ m}{9.8 \ m/s^2} } \approx 5.051 \ seconds\)

The time of flight of the food package, \(t_{125}\) ≈ 5.105 seconds

d. The horizontal distance covered, \(x_{tot}\) = vₓ × \(t_{tot}\) ≈ 15.519 m/s × 5.105 s = 79.224495 m ≈ 79.22 m.

The final speed of the go-cart in this inelastic collision is 70 m/s. The result is obtained by using the concept of inelastic collision.

The inelastic collision of two objects occur when some of the kinetic energy is lost, converted to other forms. It means that the law of conservation of kinetic energy doesn't apply.

In this case, both objects will stick together and move together with the same speed. The law of conservation of momentum applies.

m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

Where

The 4-wheeler collides with the go-cart in inelastic collision.

Find the final speed of the go-cart!

Note that this is an inelastic collision. In this case, the 4-wheeler and go-cart will stick together and move with the same speed.

The formula for conservation of momentum will be

m₁v₁ + m₂v₂ = m₁v₁' + m₂v₂'

m₁v₁ + m₂v₂ = (m₁ + m₂)v'

It means that

v₁' = v₂' = v'

The final speed of the go-cart is the same with the final speed of the 4-wheeler.

v₂' = v₁' = 70 m/s

Hence, the go-cart will have the final speed of 70 m/s.

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One way that Ms. Morimoto’s perspective is the same as President Truman’s is the belief that working peace is something we all do.

This is referred to as the officer in whom the chief executive power of a nation is vested and in most climes he/she is voted in after a election and the tenure could be four years etc.

The way in which Ms. Morimoto’s perspective is the same as President Truman’s is the belief that working peace is something we all do. This helps to prevent different types of conflict and in severe cases war which is therefore why it should be embraced.

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The majority of the light wave that hot stars release is at wavelengths that are close to ultraviolet (UV) wavelengths.

A waveform signal's wavelength is defined as the separation between two identical peaks (adjacent ) in adjacent cycles as the signal travels through space or along a wire. Its length in wireless systems is typically expressed in miles (m), centimeters (cm), or millimeters (mm) (mm).

What does the spectrum of visible light entail The area of the infrared waves that is visible to human eyes is known as the visible light spectrum. Simply put, this group of wavelengths is referred to as visible light.

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Answer:

=> Black colour do not reflect the wavelength of light and is a good emitter of heat . This, black is a good absorber of radiation.

Answer:

Black coloured objects absorb all the wavelengths of light and do not reflect any of them. Therefore, it looks black in colour and is considered to be a good absorber and a good emitter of heat. On the other hand, white coloured objects reflect all the light that falls into it and therefore they look white

'''In a series circuit, the sum of the voltages consumed by each individual resistance is equal to the source voltage. Components connected in parallel are connected along multiple paths so that the current can split up; the same voltage is applied to each component.''

The weight of the hawk is found to be 25 N.

The tension is the force that acts on the wire. Given the fact the we are told in the question that a  hawk sits on a telephone wire. If the wire dips so that it makes a 30 degree angle with the horizontal, and the tension in the wire is 25 N.

The image that depicts this problem have been attached to this solution. Now we have from the image that we have attached to this answer;

W = 2T sin θ

W = 2 * 25 * sin 30

W = 2 * 25 * 0.5

W = 25 N

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Answer:

During photosynthesis solar energy is converted into chemical energy

Explanation:

During photosynthesis solar energy is converted into chemical energy in the form of energy rich bond of ATP molecule.

ATP (Adenosine triphosphate) and ADP (Adenosine diphosphate) molecules are termed currency of energy. ADP molecule is converted into ATP molecules, whenever energy is available in certain exothermic reactions of metabolism.

ATP molecules are store- house of energy. ATP molecule is broken down into ADP molecule in presence of enzyme ATPase, releasing energy whenever energy is required.

The synthesis of ATP molecules, utilizing solar energy during photosynthesis, is termed photo-phosphorylation.

These ATP molecules produced during light reaction of photosynthesis are utilized in dark reaction of photosynthesis (Calvin cycle).

ATP molecules synthesized during photo-phosphorylation may also be used in other metabolic reactions.

Photo-phosphorylation is of 2 types, i.e. Cyclic and Non-cyclic photo-phosphorylation.

Chlorophyll molecules entrap solar energy . There are 2 types of photo-systems in chlorophyll. These are photo-system -I and photo-system-II .

The electrons of chlorophyll molecule of photo-system I get excited which pass through series of electron carriers in electron transport system arranged in the order of decreasing energy level.

During the passage of electrons from carriers of higher energy level to the carriers of lower energy level, the energy is lost which is utilized for converting ADP molecule into ATP molecule.

Photo-system I is concerned with light reaction of photosynthesis only, constituting cyclic photo-phosphorylation.

The electron transport during Photo-system II results in the synthesis of NADPH2 in presence of enzyme NADP reductase. NADPH2 is used in reduction reaction of Calvin cycle.

Both Photo-systems participate in non-cyclic photo-phosphorylation that results in the synthesis of NADPH2 in addition to the synthesis of ATP molecules.

Answer:

S = 26.58 meters

Explanation:

Given the following data;

Initial velocity = 4.66 m/s

Acceleration = 5.66 m/s²

Time = 2.35 seconds

To find the distance travelled by the object, we would use the second equation of motion;

S = ut + ½at²

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

Substituting into the equation, we have;

S = 4.66*2.35 + ½*5.66*2.35²

S = 10.951 + (2.83 * 5.5225)

S = 10.951 + 15.629

S = 26.58 meters

Answer:

3.141592653 im  king of NYC

Explanation:

Answer:

1900 meters

Explanation:

30 * 30=900

900+1000=1900

multiply the speed by the time

add the initial speed

Answer:

To find the specific gravity of the fluid, we need to compare its density to that of water.

First, we need to find the mass of the water in the bottle:

Mass of water = Mass of filled bottle - Mass of empty bottle

Mass of water = 84.70 g - 10.00 g

Mass of water = 74.70 g

Next, we can calculate the volume of water in the bottle using the density of water, which is 1 g/mL:

Volume of water = Mass of water / Density of water

Volume of water = 74.70 g / 1 g/mL

Volume of water = 74.70 mL

Now we can use the mass of the bottle when it is filled with the other fluid to find the mass of the fluid:

Mass of fluid = Mass of filled bottle - Mass of water - Mass of empty bottle

Mass of fluid = 70.00 g - 74.70 g - 10.00 g

Mass of fluid = -14.70 g

This result is negative, which means that the mass of the fluid is less than the mass of the water. This could be due to a variety of factors, such as air bubbles trapped in the fluid or an error in the measurements.

Assuming that the mass of the fluid should have been greater than the mass of the water, we can still calculate the specific gravity using the volume of water we calculated earlier:

Density of fluid = Mass of fluid / Volume of water

Density of fluid = (70.00 g - 10.00 g - 74.70 g) / 74.70 mL

Density of fluid = -14.70 g / 74.70 mL

Density of fluid = -0.196 g/mL

Again, this result is negative and therefore not physically meaningful. It is possible that there was an error in the measurements or that the assumption about the mass of the fluid being greater than the mass of the water was incorrect. Without additional information, we cannot calculate the specific gravity of the fluid.

Explanation:

Answer:

products

Explanation:

Answer:

no

Explanation:

it's a graph

Answer:

It specifically is not a element but it has plenty of elements in it

Explanation:

The origin of the large moons orbiting in the equatorial planes of the Jovian planets is believed to be a result of their formation from the circumplanetary disks of gas and dust surrounding these planets during the early stages of the solar system.

The Jovian planets, also known as the gas giants, are Jupiter, Saturn, Uranus, and Neptune. These planets have numerous moons, some of which are quite large and orbit close to the equatorial plane of their parent planet. The formation of these large moons is thought to have occurred during the early stages of the solar system when the planets were still forming.

As the Jovian planets accreted mass from the solar nebula, they formed their own circumplanetary disks made up of gas and dust. These disks are similar to the protoplanetary disk that surrounded the young Sun and ultimately gave rise to the planets. Within the circumplanetary disks, solid particles began to coalesce and grow, eventually forming moon-sized objects through a process known as accretion.

Once these moon-sized objects reached a certain mass, they began to interact gravitationally with the gas in the disk, causing the gas to spiral inward and the moon to migrate outward. This process led to the clearing of the circumplanetary disk and the establishment of stable orbits for the large moons around the Jovian planets. The alignment of the orbits with the equatorial plane of the parent planet is likely due to the conservation of angular momentum and the influence of the planet's gravity on the moon's orbital evolution.

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Answer:

Explanation:

The work done by an object can be found by using the formula

From the question

force = 1,000 N

distance = 20 m

We have

workdone = 1000 × 20

We have the final answer as

Hope this helps you

Answer: He was labeled as one of Africa's cruelest dictators because during his eight year reign many civilians were massacred. He drove out Uganda's Indian and Pakistani citizens and spent large amount of money on the military which led to the economic decline of the country.

Explanation:

The electric field vector in the plane of a dipole can be found using the equation E = (kq/d^3) * [(2x)/r^2, (y-z)/r^2, 0], where x is the distance from the dipole axis, y and z are the coordinates in the plane of the dipole, r is the distance from the dipole axis, d is the distance between the charges, and k is Coulomb's constant.

To explain further, a dipole is a pair of equal and opposite charges separated by a distance, and it generates an electric field. The electric field vector at any point in the plane of the dipole is the sum of the electric fields due to each charge. The equation mentioned above gives the electric field vector due to a single charge of magnitude q, and the total electric field vector is obtained by adding the electric field vectors due to each charge. The direction of the electric field vector is perpendicular to the plane of the dipole and points away from the positive charge and towards the negative charge.

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Answer:

A generator is a device that converts mechanical energy into electrical energy by rotating a coil of wire in a magnetic field.

By the Newtons Second Law:

F = ma

F = (47 kg)(15 m/s²)

The total iron content for Type 1 (carbonate), which is 229.0. However, there is not enough data provided to calculate the total iron content for the other types (silicate, magnetite, and hematite).

To answer the question, we can calculate the total iron content for each type of iron formation by summing up the reported values. Let's calculate the total iron content for each type:
Type 1 (carbonate):
Total iron content = 20.9 + 28.1 + 27.8 + 27.0 + 28.1 + 25.2 + 25.3 + 27.1 + 20.5
Total iron content = 229.0
Type 2 (silicate):
There is no data provided for Type 2, so we cannot calculate the total iron content for this type.
Type 3 (magnetite):
There is no data provided for Type 3, so we cannot calculate the total iron content for this type.
Type 4 (hematite):
There is no data provided for Type 4, so we cannot calculate the total iron content for this type.

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Answer:

horizontal

Explanation:

because is straight

The shape of the position-time graph is required.

The shape of the graph will be a horizontal line.

In a position time graph the x axis represents the time and y axis represents the position.

The slope of the line in a position time graph gives the velocity.

\(m=\dfrac{\Delta y}{\Delta x}\)

If an object is not moving slope of the given line will be zero.

\(0=\dfrac{\Delta y}{\Delta x}\)

This is only possible when \(\Delta y=0\)

This is the case when the line is a horizontal line with no change in the value of \(y\)

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The solution to the equation is; x =4 and x = 10

In most cases, the goal is to isolate the variable (usually represented by x) on one side of the equation. To do this, you can use inverse operations (e.g., adding, subtracting, multiplying, or dividing both sides of the equation by the same value) to cancel out any other terms.

If the equation contains more than one variable, you will need to repeat the above steps to solve for the other variables.

Now we have that;

(x – 3)^2 = 49

x^2 - 6x + 9 = 49

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For waves:

Match the wave to the description:

The wave with the smallest amplitude would produce the softest sound, B.

The wave with the largest amplitude would produce the loudest sound, D.

The wave with the highest frequency would produce the sound with the highest pitch, A.

The wave with the lowest frequency would produce the sound with the lowest pitch, C.

Waves only transfer energy.

The electromagnetic spectrum is made of: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

An acronym to help me remember this from longest to shortest wavelength: ROYGBIV (stands for red, orange, yellow, green, blue, indigo, violet - the colors of the visible light spectrum).

Uses for electromagnetic waves: radio and TV broadcasting, communication via mobile phones, heating food in a microwave oven, infrared cameras for night vision, medical imaging using X-rays, and cancer treatment using gamma rays.

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Answer:

Below

Explanation:

The two PARALLEL resistors equal:    1 / (1/16 + 1/16) = 8 Ω

V = IR        =    .7 (8) = 5.6 v

(a) The distance travelled by the object is  100 m.

(b) The displacement of the object in time interval between t = 0 s and t = 10 s is 60 m.

(a) The distance travelled by the object is calculated from the total area of the curve.

total distance = area of triangle 1 + area of triangle 2 + area of rectangle.

total distance = (¹/₂ x base x height)₁ +  (¹/₂ x base x height)₂ + length x width

total distance = (¹/₂ x 6 s x 20 m/s) +  (¹/₂ (8 - 6) 20) + (10 - 0)(10 - 8)

total distance =  60 m + 20 m + 20 m

total distance = 100 m

(b) The displacement of the object in time interval between t = 0 s and t = 10 s is calculated as follows;

displacement = final position - initial position

displacement =  (¹/₂ x base x height)₁ +  (¹/₂ x base x height)₂ + length x width

displacement = (¹/₂ x 6 s x 20 m/s) +  (¹/₂ (8 - 6) (-20)) + (10 - 0)(10 - 8)

displacement = 60 m - 20 m + 20 m = 60 m

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Answer:

c

Explanation:

not sure i think heating beach

Answer:

4 km/hr

Explanation:

The computation of the actual velocity is shown below:

Because the path of its paddles is opposed to the current direction, the real velocity can be determined by deducting the current velocity to its velocity while paddling

So, the actual velocity is

= Upstream - downstream

= 19 km/hr - 15 km/hr

= 4 km/hr

As we can see it is in positive, so it is an upstream direction  

Answer:

since the direction of his paddles is opposite of the the direction of the current, so the actual velocity can be calculated by subtracting the velocity of current to to his velocity when paddling

v = 19 - 15

v = 4 since the answer is positive, then the direction is upstream

Explanation: