what two main gasses are exchanged during the process of breathing??

Answer:

A

Explanation:

The effects due to light from distant stars

The characteristics of the solar system would have to be known or calculated in order to send a probe to a distant planet, such as Jupiter, due to the effects of the gravity from the other planets. Hence, option C is the correct answer.

When sending a probe to a distant planet, such as Jupiter, one of the critical factors that would have to be known or calculated is the effects due to the gravity from the other planets in the solar system. The gravitational interactions between the planets can significantly influence the trajectory and path of the probe during its journey. Accurate calculations are necessary to ensure that the probe's trajectory is properly planned and adjusted to reach its destination with precision. Hence, option C is the correct answer.

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Answer: b. 420 m/s

Explanation: ap3x

The frequency of the wave with the speed of 345 m/s and wavelength of 23 m is 15 Hz. With the same frequency the speed of wave t 28 m wavelength will be 420 m/s.

Frequency of a wave is the number of wave cycles per unit volume. It is the inverse of time period thus have the unit of s⁻¹ which is equivalent to one Hz. Frequency is inversely proportional to the wavelength.

The relation between frequency, wavelength and speed of a wave is written as follows:

c = νλ

Given that, speed of the wave = 345 m/s

wavelength =23 m

frequency = speed/wavelength

v = 345 m/s /23 m = 15 Hz.

New wavelength = 28 m

frequency = 15 Hz

then speed = 15 Hz × 28 m = 420 m/s.

Hence, the speed of the wave become 420 m/s. Option B is correct.

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If the required power is 332 w, the heater must run at a temperature of approximately 475 K. Infrared heaters work by emitting infrared radiation, which generates heat when it comes into contact with objects and surfaces in its vicinity.

In order to determine the temperature of an infrared heater we will use the Stefan-Boltzmann law.                                                   The Stefan-Boltzmann law states that the power radiated per unit surface area is directly proportional to the fourth power of the absolute temperature of the surface and its emissivity.                                                                                                                Mathematically, this law can be expressed as P/A = σεT^4, where P represents the power radiated, A is the surface area, σ is the Stefan-Boltzmann constant (5.67 x 10^-8 W/m^2·K^4), ε is the emissivity, and T is the absolute temperature of the surface.                                                                                                                                                                               To determine the temperature, we can rearrange the equation and substitute the provided values.                                              By applying T = (P/(Aσε))^(1/4), we can calculate T.                                                                                                                                                                               For instance, when substituting the given values into the equation T = (332/(0.05 x 5.67 x 10^-8 x 0.88))^(1/4), we find that T is approximately equal to 475 K.                                                                                                                                                 Therefore, the heater must run at a temperature of approximately 475 K if the If the required power is 332 w.

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Answer:

atomic weight 20.180

protons 10

neutrons 2,8

Explanation:

Answer:

elastic collision

Explanation:

Answer:

circuit b will have the higher current than circuit a

Answer:

two protons and two neutrons

it's the answer. hope it helps

Alpha particles have two protons and two neutrons. Therefore, option (D) is correct.

Alpha particles can be defined as positively charged particles released from the decay of several radioactive materials. The mass of the Alpha particle is because of the presence of two protons and two neutrons. Therefore, the Alpha particles nucleus is very similar to the nucleus of the Helium atom and are denoted by the Greek alphabet α.

An alpha particle or ray is also known as doubly ionized helium nuclei (He²⁺). The alpha particle's mass is equal to 6.64 × 10⁻²⁷ Kg. Alpha particles are generally generated during the standard radioactive decay of atomic nuclei.

Alpha particles contains the kinetic energy of 5MeV and a speed of 5 % of that of the speed of light. They are also formed in high-energy particle accelerators and are highly ionized particles with low penetration depth compared to other particles.

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Answer:

31.92 h

Explanation:

We'll begin by calculating the number of half-lives that has elapsed. This can be obtained as follow:

Original amount (N₀) = 1

Amount remaining (N) = ⅛

Number of half-lives (n) =?

N = 1/2ⁿ × N₀

⅛ = 1/2ⁿ × 1

Cross multiply

2ⁿ = 8

Express 8 in index form with 2 as the base.

2ⁿ = 2³

n = 3

Thus, 3 half-lives has elapsed.

Finally, we shall determine the time. This can be obtained as follow:

Half-life (t½) = 10.64 h

Number of half-lives (n) = 3

Time (t) =?

n = t / t½

3 = t / 10.64

Cross multiply

t = 3 × 10.64

t = 31.92 h

Therefore, it will take 31.92 h for lead-212 to decay to one-eighth its original strength.

Answer:

HOPE IT HELP YOU A LOT :)

I prove it also .

Answer:

Newtons Second law of motion states that"The rate of change of momentum is directly proportional to the force applied"

Answer:

A. 10

Explanation:

it increases by 10 each level

mark brainliest

Average speed = total distance covered/ total time taken

here on the graph y-axis is represented as distance and x-axis is showing time

So for the average speed of Train (line A)

total distance covered (d) = 1500 m

total time taken to reach that distance (t) = 150 s

so by a simple formula

For the average speed of  Car (line B)

Total distance covered (d) = 1500 m

total time taken to reach that distance (t) = 120 s

so by

For Maximum speed of roller- coaster (LineC)

So in the time between 70-80 seconds, it has the highest slop which shows the speed maximum at that time

In that 10 seconds, it covered 200 meters which shows its maximum speed which is

For the average speed of a Roller- coaster (line C)

Total distance covered (d) = 1300 m

total time taken to reach that distance (t) = 150 s

For the Train to Stoped at a station we can see from 40 seconds to 90 Seconds train has covered almost 0 distance which clearly shows that it was stopped which is 90-40= 50 seconds.

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Answer:

Explanation:

I hope this was all you wanted. Everything else seems finished correctly.

Answer:

nternational System of Units (SI), French Système International d'Unités, international decimal system of weights and measures derived from and extending the metric system of units. Adopted by the 11th General Conference on Weights and Measures (CGPM) in 1960, it is abbreviated SI in all languages.

Explanation:

It takes approximately 4.59 seconds for the car to come to a stop. the car's initial speed was approximately 110.2 ft/s,

To determine the time it takes for the car to stop and the car's initial speed, we can use the kinematic equation:

v² = u² + 2as

where:

v is the final velocity (0 ft/s, since the car comes to a stop),

u is the initial velocity (unknown),

a is the acceleration (-24.0 ft/s², as the car slows down),

and s is the distance traveled (253 ft).

Plugging in the known values into the equation, we can solve for u:

0² = u² + 2(-24.0 ft/s²)(253 ft)

0 = u² - 48.0 ft/s² * 253 ft

48.0 ft/s² * 253 ft = u²

u² = 12144 ft²/s²

Taking the square root of both sides:

u = √12144 ft/s

u ≈ 110.2 ft/s

So, the car's initial speed was approximately 110.2 ft/s.

Now, to find the time it takes for the car to stop, we can use the equation:

v = u + at

0 = 110.2 ft/s + (-24.0 ft/s²) * t

24.0 ft/s² * t = 110.2 ft/s

t = 110.2 ft/s / 24.0 ft/s²

t ≈ 4.59 s

Therefore, it takes approximately 4.59 seconds for the car to come to a stop.

In summary, the car's initial speed was approximately 110.2 ft/s, and it took approximately 4.59 seconds for the car to come to a stop while skidding a distance of 253 ft.

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Answer:

a

Explanation:

Answer:

3

Explanation:

period=1\time

period=1\3

period=0.3

A literary device known as dramatic irony occurs when the audience or the reader has a better understanding of the events or characters in a work than the characters themselves.

dramatic irony Add to list Share. Dramatic irony is when a character in a Titanic movie leans on the balcony and exclaims, "It's so beautiful I could just die," immediately before the ship hits the iceberg. Dramatic irony arises when the audience is aware of information that the characters are not.

Dramatic irony occurs when the audience is aware of a situation before some of the players are. This knowledge frequently creates a sense of suspense since we know the character(s) will eventually discover the truth.

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Answer:

θ = 17.67°

Explanation:

The grating equation can be used here to find the angle. The grating equation is given as follows:

\(m\lambda = dSin\ \theta\)

where,

m = order = 2

d = 3.88 x 10⁻⁶ m

λ = wavelength of light = 589 nm = 5.89 x 10⁻⁷ m

θ = angle = ?

Therefore, using these values in the equation, we get:

\((2)(5.89\ x\ 10^{-7}\ m) = (3.88\ x\ 10^{-6}\ m)Sin\theta \\Sin\theta = \frac{(2)(5.89\ x\ 10^{-7}\ m)}{(3.88\ x\ 10^{-6}\ m)}\\\\\theta = Sin^{-1}(0.3036)\)

θ = 17.67°

Answer:17.67

Explanation:

Answer:

B. A hill 70ft tall.

Explanation:

If you see a displayed diver-down flag while boating, it is necessary to maintain a certain distance from the flag for safety reasons. The specific distance may vary depending on local regulations and circumstances, but it is generally recommended to stay at least 100 feet away from the flag.

A diver-down flag is used to indicate the presence of divers in the water. Its purpose is to alert boaters to the potential hazards and to ensure the safety of the divers. The exact distance you must stay away from the flag may be specified by local laws or regulations, so it is important to familiarize yourself with the rules of the area you are boating in.

In many places, a common guideline is to stay at least 100 feet away from the diver-down flag. This distance allows for a safe buffer zone to prevent any accidental collisions or disturbances to the divers. However, it's crucial to check and adhere to the specific regulations in your boating location, as they may vary and could require a different distance to be maintained. Prioritizing safety and respecting the presence of divers is essential to avoid any accidents or harm to both boaters and divers.

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Answer:

413.6

Explanation:

212 °C × 9/5 + 32 = 413.6 °F

The force applied in the first case is 9200 N. In the second case, the force applied is less than the maximum force, so the groceries remain in the bag. The acceleration in the last case is 15 m/s².

A force is an influence in physics that can change the motion of an object. A force can cause a mass object to change its velocity, or accelerate. Intuitively, force can be described as a push or a pull. A force is a vector quantity because it has both magnitude and direction. The term "force" has a specific meaning in science. At this level, it is perfectly acceptable to refer to a force as a push or a pull. A force is not something that an object possesses or possesses. Another object applies a force to another. The concept of a force is not restricted to living or non-living things.
Here,

1. F=ma

m=4600 kg

a=2 m/s²

F=4600*2

=9200 N

2. Fₙ=250 N

m=20 kg

a=5m/s²

F=20*5

=100 N

F<Fₙ

Yes, The groceries will stay in bag.

4. Fₙ=30000 N

n=20

mₙ=75*20

=1500 kg

mₓ=500 kg

m=1500+500

=2000 kg

F=ma

30000=2000*a

a=15 m/s²

For first case, the force exerted is 9200 N. For second case, the force exerted is less than maximum force so the  groceries will stay in bag. For last case, the acceleration is 15 m/s².

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The Earth has cooled for the past 2 million years.

Answer:.05 kg*m over s

Explanation:did the work

Answer:

b

Explanation:

Answer:

The not alligator side.

Obviously the middle, both sides will be shallow, so the middle will most likely  be the deepest part.

Explanation:

The power output of  2.00 kg object is accelerated uniformly from rest to 3.00 m/s while moving 1.5 m across a level frictionless surface is 24.09 watts.

In science, power is the time required to do work or provide energy, expressed as work done W or energy transferred divided by the time interval t - or W/t. A fixed amount of work can be done for a long time with a low-powered engine, or for a short time with a high-powered engine. The unit of power is work (or energy) per unit of time. Such as foot pounds per minute, joules (or watts) per second, and ergs per second. Force can also be expressed as the product of the force required to move an object and the object's velocity in the direction of the force. If the magnitude of the force F is measured in pounds and the velocity ν is measured in feet per minute, then the power is equal to Fν foot pounds per minute.

Given,

Mass of object (m) = 2.00 kg

Distance covered (s) = 1.5 m

Velocity of object (v) = 3.00 m/s

For calculation of acceleration:

v² = u² + 2as

3² = 0 + 2 × a × 1.5

9 = 3a

a = 2 m/s²

For calculation of time:

s = ut + ¹/₂at²

1.5 = 0 × t + ¹/₂ × 2 × t²

1.5 = t²

t = 1.22 sec.

For calculation of gravitational force:

F = mg

F = 2 × 9.8

F = 19.6 N

For calculation of work done:

W = F × s

W = 19.6 × 1.5

W = 29.4 J

For calculation of power output:

P = W/t

P = 29.4/1.22

P = 24.09 watts

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Error is the difference between actual value and the calculated value.

Uncertanity of a measured value in an interval around that value such that any repetition of measurement will produce a new result that lies within the interval.

Hence, error and uncertanity are interchangeable words that describes the same concept.

Capillary pressure refers to the difference in pressure across the interface between two immiscible fluids in a reservoir. There are two types of capillarity: spontaneous imbibition and forced displacement.

Capillary pressure is the pressure difference between two immiscible fluids, such as oil and water, in a porous medium. It arises due to the interfacial tension between the fluids, the contact angle at the fluid interface, and the size of the capillary tubes within the porous medium. The capillary pressure can be calculated using the Young-Laplace equation, which relates the capillary pressure to the interfacial tension, contact angle, and capillary tube radius.

There are two types of capillarity: spontaneous imbibition and forced displacement. Spontaneous imbibition occurs when a wetting fluid displaces a non-wetting fluid in a porous medium due to capillary forces. Forced displacement, on the other hand, involves injecting a fluid into a porous medium to displace another fluid.

Capillary hysteresis refers to the variation in capillary pressure during drainage (when the wetting fluid is being displaced) and imbibition (when the wetting fluid is being absorbed). This hysteresis is caused by the trapping of non-wetting fluids in the porous medium, leading to a difference in capillary pressure depending on the direction of fluid flow.

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Answer:

about 5000 °F

Explanation: