Please help find resultant force of the figure

Answer:

90m

Explanation:

it travels at 30 m/s so 30*3 is 90

Explanation:

key to this problem is the impulse-momentum theorem which states that the change in the momentum of an object is equal to the impulse applied into it.

J

=

Δ

p

,

where

J

is the impulse and

Δ

p

is the change in momentum. Basically, the impulse is the product of force and time duration, that is,

J

=

F

Δ

t

In this problem, the impulse would be the product of the force stopping the rock and

0.7

s

.

On the other hand, momentum

p

is the product of the mass

m

and velocity

v

. Therefore, the change in momentum is given by

Δ

p

=

m

2

v

2

−

m

1

v

1

.

Starting with the impulse-momentum equation, we have

J

=

Δ

p

F

Δ

t

=

m

2

v

2

−

m

1

v

1

Divide both sides by

Δ

t

,

we get

F

Δ

t

Δ

t

=

m

2

v

2

−

m

1

v

1

Δ

t

F

=

m

2

v

2

−

m

1

v

1

Δ

t

Finally, substitute the values and we get

F

=

(

2

kg

)

(

0

)

−

(

2

kg

)

(

6

m

s

)

(

0.7

s

)

F

≈

−

20

kg

m

s

2

Since

1

N

=

1

kg

m

s

2

,

then

F

≈

−

20

N

Therefore, using the correct significant figures (in this case, we need one significant figure since 2 kg, 6 m/s and 0.7 s all have one) in the final answer, we would need to have approximately

20

N

force to stop the rock in

0.7

s

.

Note: The negative sign is referring to the direction of the force opposite of the direction of the velocity

v

1

.

Answer:

Light years or the speed of light

Explanation:

Answer:

speed of light

Explanation:

Answer:

This means the source of sound vibrates 50 times in one second. Therefore, number of vibrations in 1 minute, i.e. in 60 seconds = 50 x 60 = 3000 times.

Explanation:

Answer:

A

Explanation:

It depends on the scale of the volcanic eruption. A smaller eruption may only affect the nearby area, but a large one can affect the whole world. For example, the Krakatoa eruption of 1883 created an ash cloud which lowered global temperatures and affected the climate for a year afterwards.

An explosive eruption by a single volcano can affect only the lifeforms living on the volcano. The correct option is B.

A volcano is an opening in the Earth's surface through which molten rock, ash, and gas can escape. Volcanoes are formed by the movement of tectonic plates, which create weak spots or vents in the Earth's crust where magma can rise to the surface.

Volcanoes can form in different ways, but most are formed at plate boundaries, where one tectonic plate is moving under another (subduction zone), or where two plates are moving away from each other (divergent boundary). When magma rises to the surface, it can form a volcanic cone or mountain over time.

There are three main types of volcanoes, based on their shape and the type of eruptions they produce:

(i)Shield volcanoes - broad, gentle slopes formed by lava flows that spread out over a wide area.

(ii)Stratovolcanoes (also called composite volcanoes) - tall, steep-sided cones formed by alternating layers of lava, ash, and other volcanic debris.

(iii)Calderas - large, basin-shaped depressions that form when a volcano collapses or erupts so forcefully that it empties its magma chamber.

Volcanoes can be active, dormant, or extinct. Active volcanoes are those that have erupted recently or are expected to erupt soon, while dormant volcanoes have not erupted in a long time but could still erupt in the future. Extinct volcanoes are those that have not erupted in thousands of years and are unlikely to erupt again.

Here in the question,

An explosive eruption by a single volcano can have a significant impact on the surrounding environment and local communities, but its effects are generally limited to the immediate vicinity of the volcano. The eruption may release ash, gases, and lava flows that can cause damage to nearby ecosystems and affect the health of humans and animals living in the area. However, the effects are unlikely to extend beyond the local region, let alone affect lifeforms throughout the world.

Therefore,  B. only the lifeforms living on the volcano, is the correct option.

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Answer:

its c

Explanation:

Answer:

Hey buddy, here is your answer.Hope it helps you.

Explanation:

A catapult is a launching device that allows us to experimentally observe projectile motion. Once the ball is launched, the only forces acting are gravity and air resistance.

Answer:

The chloroplast produces sugar

Answer:

\(\boxed {\tt Chloroplasts}\)

Explanation:

In some organisms (plants, algae, types of bacteria) there are chloroplasts in the cells.

A process called photosynthesis occurs at these organelles. Let's look at the photosynthesis equation.

6CO₂+6H₂O+light energy --> C₆H₁₂O₆+6O₂

Carbon dioxide, water, and energy from the sun become glucose/sugar and oxygen.

Since photosynthesis produces sugar and photosynthesis occurs in the chloroplast. So the organelle that produces sugar is chloroplasts.

Answer:

A box with a mass of 50 kg is raised straight up. What is the force of the box? plss help!! two types exist-positive and negative. possible answers: A- electric current B- repel C- lines of force D- charges. Five wavelengths are generated every 0.100 s in a tank of water.

Explanation:

I hope it helped

Answer:

a) F = 84.64N

b) The force has to increase.

Explanation:

First of all, let's convert everything to the same unit system:

Vo = 0 m/s    Vf = 98 mi/h * 1609.34 m / 1mi * 1h / 3600s = 43.8m/s

d = 1.7m         m = 0.15kg

We can calculate force as:

F = m*a    where a is the acceleration experiencd by the ball and m is its mass.

In order to calculate acceleration, we can use this formula:

   Solving for a:

Now, the force will be:

F = m * a = 84.6N

As we can see in that previous equation, the force is directly proportional to the mass of the ball, so, assuming the final speed of the ball is the same as before (that is, the acceleration is the same), the force will increase in the same proportion as the mass does.

The net charge on the one mole of hydrogen is +20.07 Coulomb, if 0.01% of the electrons are removed from it.

A hydrogen atom contains 2 electrons, so 1 mole of hydrogen will have 2 × 6.022 × 10²³ = 1.2044 × 10²⁴ electrons.

Removing 0.01% of electrons = (0.01 × 1.2044 × 10²⁴)/100 = 1.2044 × 10²⁰ electrons.

We know that 6 × 10¹⁸ electrons are contained in -1 coulomb charge. So 1.2044 × 10²⁰ electrons will have a charge of (1.2044 × 10²⁰)/(6 × 10¹⁸) = -20.07 C

Removing electrons from hydrogen make there net positive charge of +20.07 Coulomb.

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A) The electric field at 1.0 cm above the center of the sheet is 2.5 × 10⁵ N/C, B) the electric field 15 m above the center of the sheet is 11 N/C.

Side of the square sheet, l =25 cm = 0.25 m

Uniformly distributed charge, Q = 275 × 10⁻⁹ C

ε₀ = 8.8 × 10⁻¹²

a) When close to the sheet, we assume it as an infinite sheet, So,

E = σ/2ε₀,

σ = Q/l²

E = Q/(2ε₀l²)

E = (275 × 10⁻⁹)/(2×8.8 × 10⁻¹²×0.25²)

E = 2.5 × 10⁵ N/C

B) When far from the sheet, we assume it as a point charge, if R = 15 m

E = Q/(4πε₀R²)

E = (275 × 10⁻⁹)/(4π×8.8 × 10⁻¹²× 15²)

E = 11 N/C

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Answer: causes the match to heat up

Explanation: If the match is struck against the striking surface, the friction causes the match to heat up. A small amount of the red phosphorus on the friction surface is converted into white phosphorus. The heat ignites the phosphorus that has reached the match head of the match when rubbing.

Answer:

The donkey might be dead

If you stare at a red object and immediately look at a white area afterward, you will see an afterimage that is the same size and shape, but it is blue-green, or cyan, in color. '

This is known as the opponent process theory

The opponent process theory of color vision says that color is processed in pairs (red-green, yellow-blue, and black-white.)

It means that Light that stimulates one half of the pair inhibits the other half.

In conclusion, this opponent process is thought to be responsible for our perception of color and explains why people experience afterimages.

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Higher temperatures increase the average kinetic energy of molecules, allowing a larger percentage to possess the required activation energy in a chemical reaction, leading to faster reaction rates.

As temperature increases, the average kinetic energy of molecules within a substance also increases. This is due to the fact that temperature is a measure of the average energy of motion of the particles. In a chemical reaction, the rate of reaction is determined by the collision of molecules and their ability to overcome the activation energy barrier.

When the temperature rises, a larger proportion of molecules possess sufficient energy to surpass the activation energy threshold. This is because the higher kinetic energy allows more molecules to reach or exceed the necessary energy level for the reaction to occur. As a result, a larger number of successful collisions take place, leading to a faster reaction rate.

The increased kinetic energy not only provides the necessary energy for the reactant molecules to collide effectively but also promotes a greater frequency of collisions. The higher the temperature, the more rapid and energetic the molecular motion becomes, leading to more frequent collisions and an increased likelihood of successful reactions.

In summary, as temperature rises, the average kinetic energy of molecules increases. This elevated kinetic energy enables a greater percentage of molecules to possess the required activation energy, leading to more frequent and successful collisions in a chemical reaction. Consequently, the reaction proceeds at a faster rate.

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The question probable may be:

Learning Goal: As temperature rises, the average kinetic energy of molecules increases. In a chemical reaction, this means that a higher percentage of the molecules possess the required actevation energy, and the reaction goes faster. Explain.

Answer:

hi poop

Explanation:

"Hi"

its spelled with an H & an I :^

Answer:

Assuming starting at zero velocity: at 4 seconds speed is 8 m/s (2m/s^2 * 4 seconds) and distance is 16 m (average speed is 4 m/s * 4 seconds). The remaining 84 meters (at 8 m/s) takes 10.5 seconds.

So total time to run 100 meters is 14.5 seconds.

Explanation:

Answer:

True

Explanation:

Answer:

that is very much true im pretty sure

(edit I was wrong its false)

The angle in the pre-image that corresponds to ∠D in the image is ∠P.

Correspond is a verb that means to communicate with another person or group in writing. It can also mean to match or correspond in kind or degree. Correspondence is the exchange of written communication between two people or groups. For example, a company might correspond with its customers through email, letters, or other forms of communication. Correspondence can also refer to the relationship between two or more things that are similar or have a connection. In this context, it means that two or more things correspond to each other in some way.

This is because when a figure is rotated 180 degrees about a point, the angle in the pre-image will be the same as the angle in the image, but in the opposite direction. Therefore, in this case, the angle in the pre-image that corresponds to ∠D in the image is ∠P.

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Answer:

HOPEFULLY i am correct but i say its D. Hopefully I helped!✨

Answer: It can be A or B

Explanation: In physics, motion is the phenomenon in which an object changes its position over time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed, and time.

At the lowest point of the curve, the motorcyclist's velocity would be tangential to the curve.

Motorcyclists' velocity would be parallel to the surface of the road. The acceleration of the motorcyclist would be directed opposite the direction of the velocity, meaning it would be directed uphill.

At the lowest point of the curve, the direction of the net force on the driver, Fn, would be directed towards the center of the curve. This is because the velocity of the driver is tangential to the curve, and the centripetal force is directed toward the center of the curve to provide the necessary acceleration to keep the driver on the curve.

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the magnitude of the magnetic field midway between the two wires is 5.0 × 10−5 T. Hence, option (B) is the correct answer.

Given data:

Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions.

The wires are separated by 0.20 m.The magnetic field midway between the two wires is to be determined.Formula used:

B = (μ₀ * I * i)/(2πd)

Where,B is the magnetic field at the midpoint between two wires,μ₀ is the permeability of free space, which is equal to 4π × 10−7 T∙

m/ I is the current in the first wire, and i is the current in the second wire.d is the separation between the two wires.

Substitute the given values into the above formula,

B = (μ₀ * I * i)/(2πd) = (4π × 10−7 T∙m/A * 20 A * 5 A)/(2π * 0.20 m) = 5.0 × 10−5 T

Therefore, the magnitude of the magnetic field midway between the two wires is 5.0 × 10−5 T. Hence, option (B) is the correct answer.

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Work is done when there is a displacement of an object in the direction of the applied force. Work is not done when there is no displacement or when the displacement is not in the direction of the applied force.

Work is done:

On barbells as you lift them and place them on the rack.

On the door as you push against it and open it.

On the dishes when you pull a tablecloth out from under them and they remain in place.

On a shopping cart as you push it around the store.

Work is not done:

On the piano when you drop it from the fourth floor to the ground floor.

On the locked door that remains closed while you try to pull it open.

On the bowling ball that you are holding while waiting for your turn to bowl.

In these situations, work is done when there is a displacement of an object in the direction of the applied force. Conversely, work is not done when there is no displacement or when the displacement is not in the direction of the applied force.

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Answer:

wall

Explanation:

Answer:

a wall.

Explanation: