plants expels oxygen as a by a product of photosynthesis through a air sac called​

The electric fields is always directed from higher potential to the lower potential.

The electric fields always aiming from the region of higher potential to the region of lower potential. So the force of electrostatic and the direction of the travel of electrons will be always from lower potential to the region of higher potential.

An electric field is defined as the physical field which covers the electrically charged particles and also they can apply force on all other charged particles.

So we can conclude that the electric fields is always directed from higher potential to the lower potential.

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Answer:

1.Proton,Nuetron,Electron

2.Electromagnetic force

3.J.J Thompson, Electron

4.b Nucleus

5.c Proton and Neutron

6. Electron

Explanation:

Just finished taking Physical science. Good Luck!

Answer:

the first one i think

Explanation:

Answer:

Decreases

Explanation:

Answer:

Decreases

ExplanatIon:

According to the problem the average velocity of 0.47m/0.4s = 1.175m/s.

Average velocity is a term used to describe an object's rate of change in its position. It is a vector quantity, meaning it has both a magnitude (the speed at which the object is moving) and a direction.

1) The average velocity of the particle can be calculated by taking the difference in position at different times and dividing it by the difference in time. For this given problem, the average velocity can be calculated by taking the difference in position (4.95m - 4.48m = 0.47m) and
dividing it by the difference in time (2.05s - 1.65s = 0.4s).
This gives an average velocity of 0.47m/0.4s = 1.175m/s.
2) To find the time it takes the bird to fly 778 km,
we can divide the total distance by the bird's speed.
Since the bird can fly 95.6 km/h, we divide 778 km by 95.6 km/h.
This gives 778 km/95.6 km/h = 8.14 h.
Therefore, it takes 8.14 h for the bird to fly 778 km.
3) To calculate the distance a person travels while looking away for 13.8s, we can take the speed of 116 km/h and convert it to m/s.
To do this, we divide 116 km/h by 3.6, giving 32.22 m/s.
We then multiply this by the time of 13.8s to get the distance travelled: 32.22 m/s x 13.8 s = 445.2 m.
Therefore, the person travels 445.2 m during the inattentive period of 13.8s.

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Visible light occupies a small portion in the middle of the electromagnetic spectrum. The electromagnetic spectrum is the range of all types of electromagnetic radiation.

Which includes radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. Visible light is the only part of the spectrum that is visible to humans, and it ranges in wavelength from about 400 to 700 nanometers. This narrow range of wavelengths is what allows us to see the world around us. Other types of electromagnetic radiation, such as X-rays and gamma rays, have much shorter wavelengths and higher frequencies, while radio waves and microwaves have much longer wavelengths and lower frequencies.

The electromagnetic spectrum includes all waves, but gamma rays are the most energetic and have the smallest wavelengths. The universe's hottest and most energetic objects, including as neutron stars and pulsars, supernova explosions, and regions near black holes, all produce them. "Distance between the corresponding points of two consecutive waves." Two points or particles that are in the same phase—that is, points that have finished the same fractions of their periodic motion—are referred to as "corresponding points". "Tthe number of waves that pass a fixed place in a unit of time.It also indicates how many cycles or vibrations a body in periodic motion experiences in a given unit of time.

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Light that is visible to humans occupies a small portion in the middle part of the electromagnetic spectrum.

Visible light is a small portion of the electromagnetic spectrum, located between ultraviolet light (shorter wavelengths) and infrared light (longer wavelengths). The light that is visible to humans occupies a small portion in the middle of the electromagnetic spectrum.  So, the correct answer is (c) a small portion in the middle. Visible light consists of a range of wavelengths, typically between 380 nm (violet) and 700 nm (red), which we perceive as different colors.

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Answer:

yes

The the seed planted at Extreme cold or in the region of frozen I did not germinate because the amount of moisture of the seed is too high which results in lack of air of the sea in the frozen ice

In fact, a soil temperature below 50°F might be problematic for many garden plants. Seeds will quickly absorb water at 40°C, but they won't begin to grow. This presents a risk for rot and disease, which may cause damping-off or subpar growth.

The formation of the seedling is the consequence of germination, which is often the growth of a plant inside a seed. It is also the process of the seed's metabolic machinery being reactivated, which causes the radicle and plumule to emerge. A vascular plant's seed is a little bundle that develops in a fruit or cone as the result of the union of the male and female reproductive cells.

Given the need for particular internal or external stimuli to resume growth, dormant seeds are viable seeds that do not germinate. When the right circumstances are present, the seed starts to germinate and the embryo starts to grow again, eventually becoming a seedling.

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In order to determine the mass of an asteroid, scientists need to measure its gravitational influence on other objects or study its motion in relation to other celestial bodies.

Determining the mass of an asteroid can be a challenging task since we cannot directly measure it. However, there are indirect methods that scientists use to estimate an asteroid's mass. One approach is to study the gravitational influence of the asteroid on other celestial bodies. By observing the motion of nearby objects, such as spacecraft or other asteroids, and analyzing their gravitational interactions, scientists can infer the mass of the asteroid.

Another method involves analyzing the motion of the asteroid in relation to other celestial bodies, such as planets or moons. By precisely tracking the asteroid's orbit and considering the gravitational forces acting on it, scientists can calculate its mass using mathematical models and equations derived from celestial mechanics. It's important to note that determining the mass of an asteroid can have uncertainties due to various factors, such as irregular shape, composition, and gravitational interactions with other objects. Therefore, multiple observations and measurements are often required to refine the estimation of an asteroid's mass.

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Acceleration = 4 m/s2

Newton's Second Law states that the acceleration experienced by an object is directly proportional to the net force exerted on it and in the same direction.

This can be written in the form of the the familiar equation:

 →               →

 F net =  m a

Given mass and net force, we can solve the second law equation of  a to find the acceleration resulting from that force.

a = F/ m

Net force of 24 N is applied to an object with a mass of 6;

For m = 6kg and F = 24 N

a = 24N/ 6kg

Hence,

If a net force of 24 N is applied to an object with a mass of 6

kg, then what will the resulting acceleration be according to

Newton's second law of motion is 4m/s2

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Answer:

Scissors

Tap

Spanner

Explanation:

The cost (expressed in today's dollars) of the new reactor would be $85,237.74 given that the cost of a nuclear centrifuge five years ago is $32,000.

The relevant cost index was 135. The capacity of separating ionized solution per hour = 1250 gallons Power-sizing exponent to reflect economies of scale, x, of 0.72

Desired to build a centrifuge with a capacity of 3500 gallons per hour

The cost index now is 270.The power sizing model is given as,C₁/C₂ = (Q₁/Q₂) ^ x Where,C₁ = Cost of the first centrifuge C₂ = Cost of the second centrifuge Q₁ = Capacity of the first centrifuge Q₂ = Capacity of the second centrifuge X = power-sizing exponent

Substitute the given values, For the first centrifuge,C₁ = $32,000Q₁ = 1250 gallons C₂ = ?Q₂ = 3500 gallons x = 0.72

Now, substitute the given values in the power-sizing model,C₁/C₂ = (Q₁/Q₂) ^ x32000/C₂ = (1250/3500) ^ 0.72C₂ = $32000/(0.357)^0.72C₂ = $85,237.74

Thus, the cost (expressed in today's dollars) of the new reactor would be $85,237.74.

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Answer:

Dr Hutson is the author of several books among them: John Adams and the Diplomacy of the American Revolution (1980); winner of the Gilbert Chinard Prize, 1981; To Make All Laws: The Congress of the United States, 1789-1989 (Washington and Boston, 1989-90; 4th edition, Washington, 1990); The Sister Republics

Answer:

Dr Hutson is the author of several books among them: John Adams and the Diplomacy of the American Revolution (1980); winner of the Gilbert Chinard Prize, 1981; To Make All Laws: The Congress of the United States, 1789-1989 (Washington and Boston, 1989-90; 4th edition, Washington, 1990); The Sister Republics: ... Explanation: HOPE I HELPED!!!!!

The far point of a person with relaxed eye power of 55.0 d and a lens-to-retina distance of 2.00 cm is 0.03818 m, or approximately 38.18 cm.

The far point of a person is the farthest distance from which they can see objects clearly without any accommodation, which is the process by which the eye changes its focus to see objects at different distances.

The formula to calculate the far point is:

Far point = 1 / (relaxed power of the eye in diopters) + distance from lens to retina in meters

First, we need to convert the distance from the lens to the retina from centimeters to meters:

distance from lens to retina = 2.00 cm = 0.02 m

Now we can substitute the given values into the formula and solve for the far point:

Far point = 1 / (55.0 d) + 0.02 m

Far point = 0.01818 m + 0.02 m

Far point = 0.03818 m

Therefore, the far point of a person with relaxed eye power of 55.0 d and a lens-to-retina distance of 2.00 cm is 0.03818 m, or approximately 38.18 cm.

This means that this person can see objects clearly from a distance of 38.18 cm or farther without any accommodation.

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Answer:

True

Because mitochondria is the powerhouse of the cell.

Explanation:

Hope this helps you

Answer:

True

Explanation:

Explanation:

You need two, maybe three things - something that's vibrating, a medium for those vibrations to propagate in, and a listener to hear it or recording equipment to pick it up

Answer:

You must not be inside a vacuum.

Explanation:

If you are inside a vacuum, then sound will be unable to travel as it requires the vibration of other molecules in order to spread.

A visible streak of light created by space debris entering Earth's atmosphere and burning up entirely before reaching the Earth's surface is commonly referred to as a "shooting star" or a "meteor."

These phenomena occur when small fragments of space debris, typically ranging from grains of sand to small rocks, collide with the Earth's atmosphere.

The intense heat generated by the high-speed entry causes the debris to vaporize and ionize, creating a glowing trail of light in the night sky.

This phenomenon is called a meteor or a shooting star because it appears as if a star is rapidly moving across the sky before fading away.

Meteors are a fascinating and frequent occurrence, and they are often observed during meteor showers when the Earth passes through the debris trails left by comets or asteroids.

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Answer:

the potential energy is 114 J.

Explanation:

Given;

total mechanical energy, E = 400 J

kinetic energy, K.E = 286 J

The potential energy is calculated as follows;

E = K.E +  P.E

where;

P.E is the potential energy

P.E = E - K.E

P.E = 400 J - 286 J

P.E = 114 J

Therefore, the potential energy is 114 J.

Answer:

true

Explanation:

this is true, igneous rocks are formed from molten lava when it cools

Answer: True

Explanation:

X = - 3.44 m coordinates when we put a third charged particle such that it is in a equilibrium , when two charged particles are fixed in place .

The mark of harmony of the third charge should be on the - x pivot. Allow it to be a distance ''d'' from +4Q charge

                 k × 4Q × q / d² -- k × 10 Q × q/ ( d + 2 )²  = 0

                         ( d+ 2 )² = 2.5 × d²

                       d = 3.44 m           Along -x axis

 x = - 3.44 m

A particle with an electric charge is called a charged particle. It could be an ion, like a molecule or atom with more or less electrons than protons. It can likewise be an electron or a proton, or one more rudimentary molecule, which are completely accepted to have a similar charge (with the exception of antimatter).

The principle of charge, also known as the "predominance" or "deficiency" of electrons, was referred to as the "quantity of electricity." E" alluded to electrons, so "Q," after the principal expression of that expression, came to address "charge

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Explanation:

because its speed (v) is 0

Answer:

I believe the answer is trench.

Explanation:

Hope this helps! <3

Answer:

B. Fault

Explanation:

Please correct me if I’m wrong

(it’s either b or c)

Answer: The cost of using the microwave oven for 30 minutes every day for 9 days is $0.57

Explanation: The GRASS method is used to calculate the cost of using an appliance by multiplying the power rating of the appliance (in kW) by the hours of use, and then multiplying that by the rate per kWh.

Here's the calculation:

Power rating: 0.62 kW

Time of use: 30 minutes/day for 9 days = 30/60*9 = 13.5 hours

Cost per hour = 0.62 * 6.8 / 100 = 0.04236

Total cost = 0.04236 * 13.5 = $0.57

Answer:

You should still workout 90 min.

The proper time is measured by a single clock in a single place.

The proper time on earth is 90 min.

The clock on the rocket is also in a single place in the frame of the rocket so you still need to workout for 90 min.

The acceleration of the car toward the cliff is 19.81m/s. Other part as well as the explanation of the question is discussed below.

To find the speed at which the car leaves the cliff, first we need to know how long it took to reach the ground. We do this with the equation Where the vertical position at a time , since we are looking for the moment when the car reaches the gound is the initial vertical position, in this case the height of the cliff  is gravitational acceleration: .

So replacing the known values and since we need the time, we clear for it At time  the car  reaches the ground, according to the problem at a horizontal distance from the base of the cliff of 100 to find the velocity we use where  is the horizontal distance at time  (in this case  and  ),  is the initial horizontal distance, we define the cliff as zero in horizontal distance so , and  is the velocity of the car when it rolled of the cliff.

Therefore, The initial velocity (when it rolled of the cliff) is 19.81m/s.

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The spring balance provides a mass measurement

Answer:

mass

Explanation:

The mass is hung on the end of a spring, and the deflection of the spring due to the downwards gravitational force on the mass is measured against a scale.

The required thermal radiation emitted by the Sun is calculated to be 16 times greater than the radiation.

We know that the energy emitted from the thermal radiation is is proportional to temperature raised to the power 4.

Thermal radiation ∝ T⁴

where,

T is temperature

The energy of the hot sun can be written as σ Thot⁴ = σ(12000)⁴

The energy of the cold sun can be written as σ Tcold⁴ = σ(6000)⁴

The ratio of both the energies is calculated to be,

⇒ σ(12000)⁴/σ(6000)⁴ = 16

Thus, the required energy output of the Sun is 16 times greater.

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Answer:

placing an object between two free ends of a wire in a circuit. the circuit must have a bulb, wires, crocodile clips and a switch (optional) .

Explanation:

get a material between the clips . if the bulb lights up, the object is a conductor and is it doesn't its an insulator.

The electric field just inside the paint layer is 0 N/C, as the electric field inside a conductor is zero.

Part B: The electric field just outside the paint layer can be calculated using the formula E = kQ/r^2, where E is the electric field, k is the electrostatic constant (8.99 x 10^9 Nm^2/C^2), Q is the charge (-19.0 μC), and r is the radius of the sphere (10.0 cm).

The electric field just outside the paint layer is approximately 3.42 x 10^5 N/C.
Part C: To find the electric field 7.00 cm outside the surface of the paint layer, we need to recalculate the electric field with a new radius (10.0 cm + 7.00 cm = 17.0 cm). The electric field 7.00 cm outside the surface is approximately 1.07 x 10^5 N/C.
For part A, the electric field inside a conductor is zero because the charges will distribute themselves on the surface, and no electric field exists within the conductor.
For parts B and C, the formula E = kQ/r^2 is used to calculate the electric field at a distance r from a point charge Q. In these cases, we consider the charge to be uniformly distributed on the sphere's surface.

Summary:
The electric field just inside the paint layer is 0 N/C, just outside the paint layer is approximately 3.42 x 10^5 N/C, and 7.00 cm outside the surface of the paint layer is approximately 1.07 x 10^5 N/C.

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It takes approximately 0.0543 seconds for the machine part undergoing simple harmonic motion to go from x = 0 to x = -1.80 cm.

To find the time it takes for the machine part to go from x = 0 to x = -1.80 cm, we can use the equation for simple harmonic motion (SHM):

x = A * sin(2πft),

where x is the displacement, A is the amplitude, f is the frequency, and t is the time.

In this case, the amplitude (A) is given as 1.80 cm, and the frequency (f) is given as 4.60 Hz. We want to find the time it takes for the displacement to go from x = 0 to x = -1.80 cm.

When the displacement is at its maximum, we have:

A * sin(2πft) = -1.80 cm.

Using the given values, we can rearrange the equation to solve for t:

sin(2πft) = -1.80 cm / A = -1.80 cm / 1.80 cm = -1.

For sin(2πft) to be -1, the argument inside the sine function (2πft) must be equal to -π/2.

2πft = -π/2,

Simplifying the equation, we have:

t = -(1/4f).

Substituting the given value of f = 4.60 Hz, we can calculate the time it takes for the part to go from x = 0 to x = -1.80 cm:

t = -(1/4 * 4.60 Hz) = -0.0543 s.

Since time cannot be negative, we take the absolute value:

t = 0.0543 s.

Therefore, it takes approximately 0.0543 seconds for the machine part to go from x = 0 to x = -1.80 cm.

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