a driver's foot presses with a steady force of 20N on a pedal in a car as shown.

Answer:

C

Explanation:

I would try c but i'm not 100% positive

Answer:

c

Explanation:

its C because energy cant be destroy nor created its just can be transfer in a way such as the chemical solution that release energy to propel the cannonball thus the kinetic energy (movement)

Climate. What does it mean?

Climate is a long-term weather, or recurring every time. Examples of climate? Every day, the desert is hot the day and cold in the night. This won't change, at least for hundreds, thousands, millions of years. This is climate.

Weather. What does it mean?

Weather is short-term, usually not recurring every time. Examples of weather? Today is very sunny. This will change-for all we know, tomorrow will be cloudy and rainy!

This is why your answer will NOT be a meteorologist predicts that tomorrow will be sunny and warm. This is weather, because it is only tomorrow.

This is why your answer will NOT be fertile soil makes farms in the region very productive. This does not relate to weather, or climate.

This is why your answer will NOT be the temperature dropped below freezing every night last week. This will only be "last week", not the week right now or the week after this week.

Therefore, your answer is "Thunderstorms frequently occur in the summer. This is because that's the climate in that part- thunderstorms always happen.

Brainliest?

Climate refers to long-term weather patterns and conditions experienced in a location. Thunderstorms occurring in the summer and fertile soil making farms productive are not climate indicators. However, dropping temperatures below freezing every night indicates a cold climate, while a sunny and warm prediction suggests a hot climate.

The climate of a place refers to the long-term weather patterns and conditions experienced in that location. It is characterized by factors such as temperature, precipitation, humidity, and wind patterns. Of the given options, thunderstorms frequently occur in the summer is more indicative of the weather, rather than the climate. In contrast, fertile soil making farms in the region very productive is not directly related to climate but rather to a region's agricultural potential. However, the temperature dropped below freezing every night last week describes a cold climate, while a meteorologist predicting that tomorrow will be sunny and warm suggests a hot climate.

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The change in motion of an object is influenced by both the mass of the object and the size of the force applied to it, as per Newton's second law of motion.

The change in motion of an object, also known as acceleration, is dictated by Newton's second law of motion. According to this law, the acceleration of an object is directly proportional to the net force acting upon it and inversely proportional to its mass. Therefore, the correct answer is A) Both the mass of the object and the size of the force. The quantity of the force applied and the mass of the object are both crucial factors that determine the change in an object's motion.

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Answer: it's A hope this helps

Explanation:

Answer: ( A ) - asteriods

Explanation: because most asteriods are in the asteriods belt , and the largest asteroid in Ceres , which is 583 miles across , still holding the record .

Asteroids refer to the type of body which is the largest in this scenario and is denoted as option 1.

These are rocky objects which orbit the sun and are smaller which is why they aren't referred to as planets.

They are however bigger than the meteoroids and comets which makes it the most appropriate choice.

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Answer:

B

Explanation:

the answer is b because the man has a deeper voice than the womans high pitched voice

Answer:

Effective resistance:

Rp = r/5 = 0.1/5 =0.02Ω

Explanation:

When the resistances are connected in parallel, the effective resistance becomes less than the smallest individual resistance. Thus smallest resistance is obtained when five0.1Ω resistors are connected in parallel.

Answer:

Sedimentary rocks are usually formed under water when grains of broken rocks are glued together while igneous rocks form when melted rock (magma or lava) cools and metamorphic are rocks that once were igneous or sedimentary rocks but have been changed by pressure and temperature.

Igneous rock is formed by the cooling of magma (molten rock) inside the Earth or on the surface. Sedimentary rocks are formed from the products of weathering by cementation or precipitation on the Earth's surface. Metamorphic rocks are formed by temperature and pressure changes inside the Earth.

The steps of the inquiry process in historical inquiry are: developing questions, analyzing sources, developing evidence, and constructing claims.

The steps of the inquiry process in historical inquiry are as follows:

These steps allow historians to engage in the process of historical inquiry and gain a comprehensive understanding of the past.

Answer: The velocity of an object

Explanation: The slope of an acceleration vs. time graph is also the velocity of the object.

The error that Roshan made is: the rays in the table describe how rays are drawn for a concave lens rather than for a convex lens.

A lens is an optical device that is used to focus or diverge light rays through refraction. It is made up of a transparent material, such as glass or plastic, with at least one curved surface.

Roshan's table contained an error because he described the ray diagram for a concave lens rather than a convex lens.

A concave lens's ray diagram differs from that of a convex lens because the concave lens diverges light while the convex lens converges light.

After passing through the lens, the ray should be parallel to the main axis from the object to the lens. This is due to the law of refraction, which states that the incident angle equals the refracted angle.

Thus, Roshan's error was describing the ray diagram for a concave lens rather than a convex lens.

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Roshan's error was in stating that a ray passing through the center of a convex lens should bend and go through the focal point on the other side, which is incorrect as such rays do not change direction.

Roshan's error in describing how to draw a ray diagram for a convex lens is in the statement that 'The ray that goes through the center should bend and go through the focal point on the other side.' In fact, rays that pass through the center of a convex (converging) lens continue in a straight line without bending. The correct rules are:

Therefore, the correct statements for a convex lens would be that a ray that starts out parallel with the main axis should bend toward the axis and go through the focal point on the other side, and that the ray passing through the center of the lens should not deviate from its path.

9000 J

Math

Pre-Algebra

Order of Operations: BPEMDAS

Physics

SI Units

Energy

Kinetic Energy Formula: [tex]\displaystyle KE = \frac{1}{2}mv^2[/tex]

Step 1: Define

m = 2000 kg

v = 3 m/s

Step 2: Find KE

Answer:

The answer is 4200 J.

Explanation:

The formula of work done is, W = F×D where F is the force of an object and D is the distance. Then you just substitute the values into the equation :

W = F×D

F = 42N

D = 100m

W = 42 × 100

= 4200 J

The work done by the mountain climber who weighs 42.0 N and climbs a hill 100 meters high is 4200 joules, calculated using the formula for work done W = Fd.

The student's question relates to the concept of work done, which is a topic in Physics. To calculate work done, you can use the formula W = Fd, where W is work, F is force, and d is displacement (in the direction of force). In this case, the displacement would be the vertical height the mountain climber ascends, which is 100 meters.

The force is the weight of the mountain climber, which is given as 42.0 N. Applying the formula W = Fd, we get W = 42.0 N * 100 m, which equals 4200 joules. This represents the gravitational work done by the climber as he elevates himself against the pull of gravity over a vertical distance of 100 meters.

Answer:

b

Explanation:

Yes, there is a noise cancellation in example B.

Active noise control, also known as noise cancellation or active noise reduction, is a method of reducing unwanted sound by adding a second sound designed specifically to cancel the first.

Active noise cancellation employs more advanced technology to actively combat noise. Essentially, it detects and analyzes the sound pattern of incoming noise before producing a mirror "anti-noise" signal to cancel it out. As a result, you hear a significantly reduced level of noise.

As we understood that the unwanted noise is cancelled by the second sound wave which reduces or cancels the unwanted sound wave. Example B is showing that the other wave is cancelling the noise and making the sound more noise free.

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Answer:

interphase im sure

Explanation:

Answer:If a 5-kilogram mass is raised vertically 2 meters from the surface of the Earth, its gain in potential energy is approximately 1) 0 J 2) 10 J 3) 20 J 4) 100 J 43.

Explanation:

The gain of potential energy of the object is 980 joule.

Potential energy is the energy held by an object as a result of its position relative to other objects, internal stresses, electric charge, or other factors.

The gravitational potential energy of an object, the elastic potential energy of an extended spring, and the electric potential energy of an electric charge in an electric field are all examples of common types of potential energy. The joule, denoted by the symbol J, is the unit of energy in the International System of Units (SI).

Mass of the object: M = 5 kilogram

Vertical distance raised: h = 2 meter.

Acceleration of the gravity: g = 9.8 m/s ².

Hence, its  gain in potential energy = Mgh

= 5 kilogram × 2 meter × 9.8 m/s²

= 980 Joule.

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Explanation:

q = mCΔt

q = (2.3 kg) (385 J/kg/K) (80.0°C − 20.0°C)

q ≈ 53,000 J

q ≈ 53 kJ

The thermal energy absorbed by 2.3 kg copper wire when its temperature raises from 20 to 80 degree Celsius is 53.13 J.

The specific heat capacity of substance is the heat energy required to raise its temperature by one degree Celsius per one gram. The specific heat capacity of metallic copper is 0.385 J/ °C g.

The calorimetric equation relating the heat energy q with the mass m, temperature difference ΔT and specific heat c is given by :

q = m c  ΔT.

Given the mass of the copper wire = 2.3 Kg

temperature difference  ΔT = 80 -20 = 60 °C.

specific heat of copper = 0.385 J/ °C g

q = 2.3 Kg × 0.385 J/ °C g × 60 °C

  = 53.13 J

Therefore, the thermal energy required for the copper wire to raise its temperature is 53.13 J.

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Answer:Longitudinal wave/compression wave

Explanation:?

Hi there! Hopefully this helps!

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The SI system of amplitude is a metre (m).

Answer:

it should be B let me know if i am wrong

Explanation:

Answer:

The electricity in your house might have an extremely high voltage

Explanation:

To travel efficitenly elelectricty needs to be at a high voltage and transformers take it town to a resonable level.

Answer:

D

Explanation:

Well opposites attract, don't they?

A bar magnet at position X will align according to external magnetic fields, typically aligning its north pole towards the geographic North Pole. When experimenting with two magnets, opposite poles attract while like poles repel, which can be visualized with iron filings arranging along a magnetic field.

When a small bar magnet is placed at position X, its orientation will be determined by the external magnetic fields present. If there is no significant external field other than the Earth's magnetic field, a freely suspended bar magnet would align with the Earth's magnetic field lines, where one pole (north-seeking) faces the geographic North Pole and the south-seeking pole faces the geographic South Pole.

However, if we follow instructions similar to those given—placing one bar magnet on the table and bringing the north end of another bar magnet close to the south end of the first, we expect to see attraction between the opposite poles. Conversely, if two like poles are brought close together, they will repel each other. These interactions are due to the magnetic field lines that emerge from the north pole of a magnet and enter at the south pole.

Bar Magnet and Magnetic Field Lines: Utilizing iron filings around bar magnets can visualize these lines. The filings align with the magnetic field, showing the typical dipole pattern. When two bar magnets are placed with the same poles facing each other, the filings will show a pattern indicating repulsion, with field lines diverging. In contrast, when opposite poles are near each other, filings will align to show attraction, with field lines converging.

Answer:

(2) B and C

Explanation:

In B resistors are parallel

so

1/R = 1/R1 + 1/R2

= 1/8+1/8

= 2/8

so

R = 4 ohms

In C resistors are in series

so,

R= R1+R2

= 2+2

= 4

The two resistors with the same equivalent resistance are B and C. So, option 2 is correct.

A series resistance circuit is defined as the circuit in which two or more resistances are connected in such a way that the current flowing through all the resistors are the same.

Here,

Two series resistance circuits and two parallel resistance circuits are given.

Calculating the equivalent resistance in each of them.

A) It is a series resistance

  R₁ = R₂ = R = 1 Ω

Effective resistance, Reff = R₁ + R₂ = 2R

Reff = 1 + 1

Reff = 2 Ω

B) Parallel resistance circuit

 R₁ = R₂ = R = 8 Ω

 Effective resistance, Reff = R₁R₂/(R₁ + R₂)

 Reff = R/2 = 8/2

 Reff = 4 Ω

C) Series resistance circuit

  R₁ = R₂ = R = 2 Ω

  Reff = 2R = 2 x 2

  Reff = 4 Ω

D) Parallel resistance circuit

  R₁ = R₂ = R = 2 Ω

  Reff = R/2 = 2/2

  Reff = 1 Ω

Hence,

The two resistors with the same equivalent resistance are B and C.

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Answer:

(a). [tex]\theta_2 = 12.5^o[/tex]

(b). [tex]\theta_1 = 19.0^o[/tex]

Explanation:

(a).

Snell's law says

[tex]n_1sin(\theta_1) = n_2sin(\theta_2)[/tex]

which in our case gives

[tex](1.00)sin(19.0^o) = (1.50)sin(\theta_2)[/tex]

Solving for [tex]\theta_2[/tex] gives

[tex]\dfrac{(1.00)sin(19.0^o)}{1.50} = sin(\theta_2)[/tex]

[tex]\theta_2 = sin^{-1}[\dfrac{(1.00)sin(19.0^o)}{1.50}][/tex]

[tex]\boxed{\theta_2 = 12.5^o}[/tex]

which is the angle of refraction from air to glass.

(b).

When the light ray goes from glass to back to air again, the angle of refraction equals the angle with which it had entered the glass because of the symmetry in Snell's law:

[tex](1.00)sin(\theta_1) = (1.50)sin(12.5^o)[/tex]

[tex]\boxed{\theta_1 = 19.0^o}[/tex]

The result is that the outgoing ray (one that refracted out from glass to air) and the tracing of the incoming ray (one that refracted into the glass) are parallel to each other.

Answer:

the formation of bubbles

a change in color

the formation of a precipitate

Explanation:

Answer:

>the formation of bubbles

>a change in color

> the formation of a precipitate

Answer: B i did a test

The voltage drop across the 20.0-ohm resistor is 30 V. Correct Option is 3.

When resistors are connected in series, the total resistance (R_total) is the sum of individual resistances. In this case, the total resistance is:

R_total = 60 ohm + 20 ohm = 80 ohm

According to Ohm's law, the voltage drop across a resistor is proportional to its resistance. Therefore, the voltage drop across the 20.0-ohm resistor can be calculated using the ratio of its resistance to the total resistance, multiplied by the total voltage.

Voltage drop across the 20.0-ohm resistor:

V_drop = (Resistance of the 20.0-ohm resistor / Total resistance) * Total voltage

V_drop = (20 ohm / 80 ohm) * 120 V

V_drop = (1/4) * 120 V

V_drop = 30 V

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Answer:

A. A substance feels warm.

D. One substance transfers some of its thermal energy to another substance.

E. Two substances differ in temperature.

Explanation: