As an object moves from point a to point b only two forces act on it: one force is nonconservative and does −30 j of work, the other force is conservative and does +50 j of work. between a and b,

Answer: i guess d is the correct answer

Answer:

D

Explanation:

I used this and passed my test! good luck!

Answer: 30 inches

Explanation: 12x2.5=30

Answer:

Explanation:

1 feet = 12 inch

2.5 feet = 2.5 × 12

= 30 inch

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The two things that must exist for an electric current to be produced are:

An electric potential between two bodies and a conducting path joining the bodies.

This comes from the fact that when there is a potential difference there is an electrical field and hence a force that makes some free charges to move in the conductor. For this reason, there's an electrical current.

Answer: An electric potential between two bodies and a conducting path joining the bodies

Answer:

An egg with a thick shell.

Explanation:

Hope this helps.

Answer:

C.the coefficient of friction

Explanation:

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The velocity of the astronout, weighted of 60kg, is 0.5m/s to the left when a wrench he throwed moves to the right.

To solve this problem we will use the Conservation of Momentum theory. Conservation of momentum stated that the total momentum in a system remains constant without any external forces.

From the case, we know that:

m1 = 60kg

m2 = 3kg

v1 = v2 = 0m/s

v2' = 10m/s to the right

v1' ?

Using the conservation of momentum concept, we know that the astronaut's velocity is:

ΔP = ΔP'

m1.v1 + m2.v2 = m1.v1' + m2.v2'

60(0) + 3(0) = 60.v1' + 3(10)

0 = 60.v1' + 30

v1' = -0.5m/s

v1' = 0.5m/s to the left (opposite of the wrench's direction)

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Answer:

3433.4m

Explanation:

Volume_submerged = (Density_mantle / Density_mountain) * Volume_exposed

Volume_submerged_meters = Volume_submerged / 1000000

Weight_submerged = Density_mantle * Volume_submerged_meters * g

Weight_submerged = Weight_exposed

Density_mantle * Volume_submerged_meters * g = Density_mountain * Volume_exposed * g

Volume_submerged_meters = (Density_mountain / Density_mantle) * Volume_exposed

Volume_submerged_meters = (3.2 g/cm^3 / 4.1 g/cm^3) * 4400 meters

Volume_submerged_meters = (0.7805) * 4400 meters

Therefore, the total height of the mountain is 3433.4 meters.

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According to the research, the correct answer is that the conditions that affect hurricanes causing them to change direction are higher latitudes.

It is a tropical cyclone that generates strong winds whose storms circulate around a center of low pressure.

In this sense, this phenomenon usually has its beginning in the tropics around the area of low pressure whose direction is influenced by the Coriolis effect that diverts the trajectory of objects that move over the Earth's surface and the higher latitudes that reverse the steering winds.

Therefore, we can conclude that higher latitudes and the Coriolis effect are conditions that affect the path of hurricanes by changing their direction.

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Answer:

1.6 An iron is supplied with a current of 3 A from the mains. The resistance of the iron is 100 Ω. Calculate the power of the iron. [2

Answer:

Would it be starting point?

Explanation:

When you start a sport or something, you may not be good or bad at it. However, as time goes on you are going to improve.

Idk if this helps or not buh yeah

The most comfortable color to wear on a hot day would be white. A blue shirt looks blue due to the absorption of white light.

We mostly notice colors in reflected light. The room's variously colored objects reflect some of the white light while absorbing the rest. A blue shirt shows that white light contains blue light because blue wavelengths are reflected by blue and are absorbed by the remainder.

White Light. However, fluorescent light has different wavelengths than sunshine. We feel as though our clothing and makeup are a little out of color when these wavelengths are reflected in our eyes.

According to conventional wisdom, white is the best color to wear in hot weather since it keeps the body cool, as opposed to black, which has a tendency to absorb heat.

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Answer:

The answer should be C. some mass was consumed in the reaction

A powder and a liquid with a total mass of 20 grams are combined in an open beaker, then the best explanation for the difference in mass is that some mass was consumed in the reaction. Hence, option C is correct.

A chemical reaction is the process by which any or more compounds, known as reagents, change into one or more new ones, known as products. Active ingredients or compounds make up substances. The atoms that make up the reactants are reorganized in a chemical reaction to create various products.

Technology, society, and even life itself depend on chemical interactions in one way or the other and. Chemical reactions have been recognized and employed for thousands of years in a wide variety of activities, including burning fuels, smelting iron, creating pottery and pottery, brewing beer, making wine, and manufacturing cheese. There are countless examples of complicated chemical reactions in all living systems, as well as in the Earth's geology, atmosphere, and oceans.

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Answer:

The answer of this is question is A.

Answer:

A.

Explanation:

sana makatulong po ❤❤

Answer: v = 0.6 m/s

Explanation: Momentum Conservation Principle states that for a collision between two objects in an isolated system, the total momentum of the objects before the collision is equal to the total momentum of the objects after the collision.

Momentum is calculated as Q = m.v

For the piñata problem:

\(Q_{i}=Q_{f}\)

\(m_{p}v_{p}_{i}+m_{s}v_{s}_{i}=m_{p}v_{p}_{f}+m_{s}v_{s}_{f}\)

Before the collision, the piñata is not moving, so \(v_{p}_{i}=0\).

After the collision, the stick stops, so \(v_{s}_{f}=0\).

Rearraging, we have:

\(m_{s}v_{s}_{i}=m_{p}v_{p}_{f}\)

\(v_{p}_{f}=\frac{m_{s}v_{s}_{i}}{m_{p}}\)

Substituting:

\(v_{p}_{f}=\frac{(0.54)(4.8)}{(4.4)}\)

\(v_{p}_{f}=\) 0.6

Immediately after being cracked by the stick, the piñata has a swing speed of 0.6 m/s.

Answer:

1323

Explanation:

we know ,

weight = m*g

= 135 * 9.8 ( acceleration due to gravity in earth is 9.8 m/S2)

= 1323 N

Answer:

maybe a. what you think . about that

Answer:

Because there is no gravity determining where you are.

Explanation:

I hope this helps

have a good day :)

Answer:

C.

Explanation:

grassland are used for cropland

In an ecosystem, as the human population increases grasslands  are used for cropland.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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According to the second law of Newton, the acceleration is directly proportional to the net force acting on the object:

From this formula, we can also see that the acceleration is inversely proportional to the mass: For the same force, if the mass increases, the acceleration decreases.

Therefore the correct option is d.

Emily throws the ball at 30 degree below the horizontal

so here the speed is 14 m/s and hence we will find its horizontal and vertical components

v_x = 14 cos30 = 12.12 m/sv

x

=14cos30=12.12m/s

v_y = 14 sin30 = 7 m/sv

y

=14sin30=7m/s

vertical distance between them

\delta y = 4 mδy=4m

now we will use kinematics in order to find the time taken by the ball to reach at Allison

\delat y = v_y *t + \frac{1}{2} at^2\delaty=v

y

∗t+

2

1

at

2

here acceleration is due to gravity

a = 9.8 m/s^2a=9.8m/s

2

now we will have

4 = 7 * t + \frac{1}{2}*9.8 * t^24=7∗t+

2

1

∗9.8∗t

2

now solving above quadratic equation we have

t = 0.44 st=0.44s

now in order to find the horizontal distance where ball will fall is given as

d = v_x * td=v

x

∗t

here it shows that horizontal motion is uniform motion and it is not accelerated so we can use distance = speed * time

d = 12.12 * 0.44 = 5.33 md=12.12∗0.44=5.33m

Answer:

starch into simple sugars

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Answer:

300,000

Explanation:

its basicly adding 125+125+125+125+125+125+125+125+125 or125 x 9

The diameter of the aperture is approximately 1.54 micrometers.

The diameter of the central bright area is determined by the diffraction pattern of the light as it passes through the circular aperture. The formula for the diameter of the central bright spot (D) is given:

D = 2.44 * λ * d / D

where λ is the wavelength of the light (609 nm), d is the distance from the aperture to the screen (2.0 m), and D is the diameter of the aperture.

Diffraction is the bending or spreading of waves around obstacles or through openings, causing interference patterns. It occurs when a wave encounters an obstacle or an aperture, and the wavefronts are bent and spread out. This bending of wavefronts leads to the creation of constructive and destructive interference patterns, which result in bright and dark regions in the diffraction pattern.

Diffraction is a fundamental phenomenon that occurs with all types of waves, including light, sound, and water waves. The amount of diffraction is dependent on the wavelength of the wave and the size of the obstacle or aperture.

Solving for D, we have:

D = 2.44 * λ * d / D = 2.44 * 609 * 10^-9 * 2 / 0.25 = 1.54 * 10^-5 m = 1.54 * 10^-5 * 10^6 um = 1.54 um

Therefore, the diameter of the aperture is approximately 1.54 micrometers.

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The average force applied on your body by the mattress is 720 N.

In order to find the average force applied on your body by the mattress, we can use Newton's second law of motion, which states that the force (F) acting on an object is equal to the mass (m) of the object multiplied by its acceleration (a):

F = m * a

F = m * Δv / Δt

where Δv is the change in velocity and Δt is the time interval.

Given:

First, let's calculate the Δv:

Δv = v - u

Δv = 0 - 8

Δv = -8 m/s

Thus:

F = m * Δv / Δt

F = 90 kg * (-8 m/s) / 1.2 s

F = -720 N

Therefore, the average force applied on your body by the mattress is 720 N.

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The average force applied on your body by the mattress is approximately 600 N.

To find the average force applied on your body by the mattress, use Newton's second law of motion, which states that force (F) is equal to the rate of change of momentum (mass times acceleration):

F = m × a

Given:

Mass (m) = 90 kg

Initial velocity (u) = 8 m/s

Final velocity (v) = 0 m/s (since you come to a stop)

Time (t) = 1.2 seconds

First, calculate the acceleration using the equation:

a = (v - u) / t

a = (0 - 8) / 1.2

a = -8 / 1.2

a = -6.67 m/s²

The negative sign indicates that the acceleration is in the opposite direction of the initial velocity, which makes sense since you're slowing down.

Now calculate the average force using the equation:

F = m × a

F = 90 kg × (-6.67 m/s²)

F = -600 N

The negative sign indicates that the force is in the opposite direction of the initial motion. In this case, it means the force is applied in the direction opposite to your motion.

Therefore, the average force applied on your body by the mattress is approximately 600 N.

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Answer:

A. Particles in air move in circles as the wave moves forward.

B. Particles in air move forward but not backward as the wave moves

forward.

C. Particles in air move up and down as the wave moves forward.

✔ D. Particles in air move forward and backward as the wave moves

forward.

Explanation:

The waves transfer energy from the source of the sound, e.g. a drum, to its surroundings. Your ear detects sound waves when vibrating air particles cause your ear drum to vibrate. The bigger the vibrations the louder the sound.

Answer:

Sound waves travel at 342 m/s through the air and faster through liquids and solids. The waves transfer energy from the source of the sound, e.g. a drum, to its surroundings. your ear detects sound waves when vibrating air particles cause your eardrum to vibrate. The bigger vibrations the louder the sound.

Explanation:

The combination of the vast moisture availability and relatively stable atmospheric conditions over the oceans contributes to more frequent precipitation compared to land areas.Due to this precipitation on earths surface is less common.

Precipitation on Earth's surface is generally less common on land compared to over the oceans due to several factors related to the water cycle. The water cycle involves the continuous movement of water between the atmosphere, land, and oceans.

Firstly, the oceans cover a significant portion of the Earth's surface, which means there is a larger expanse of water available for evaporation. Evaporation occurs when water from the surface of oceans turns into water vapor, rising into the atmosphere. The vastness of the oceans provides ample moisture for evaporation, resulting in a greater supply of water vapor in the atmosphere.

Secondly, land surfaces tend to heat up and cool down more quickly than the oceans. This difference in temperature leads to variations in air pressure and creates atmospheric circulation patterns. As warm air rises over land areas, it expands and cools, causing water vapor to condense and form clouds. However, the land areas often lack the necessary moisture content to sustain significant cloud formation and subsequent precipitation.

Moreover, when moist air masses from the oceans encounter land masses, they are forced to rise due to the topography of the land. As the air rises, it cools, leading to condensation and cloud formation. However, the presence of mountains or other geographical features can enhance this lifting process, resulting in increased precipitation in certain regions.

Overall, the combination of the vast moisture availability and relatively stable atmospheric conditions over the oceans contributes to more frequent precipitation compared to land areas. Land surfaces, with their varying temperatures, limited moisture content, and topographical features, often experience less common and more localized precipitation events.

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