If i took physical science in 7thgrade do i get credit for physics

R(F) = 4F - 160

a. R¹(P) represents the temperature at which a cricket chirps at a rate of P chirps per minute.

b. R(60) refers to the chirping rate of the cricket when the temperature is 60 degrees Fahrenheit, while R¹(60) represents the temperature at which the cricket chirps at a rate of 60 chirps per minute.

The equation R(F) = 4F - 160 represents the relationship between the temperature of the cricket's environment (F) and its chirping rate (R). By plugging in different temperature values, we can determine the corresponding chirping rate.

For example, when we calculate R(60), we find the chirping rate at 60 degrees Fahrenheit.

In this case, R(60) = 4(60) - 160 = 240 - 160 = 80 chirps per minute.

On the other hand, when we calculate R¹(60), we are looking for the temperature at which the cricket chirps at a rate of 60 chirps per minute. Solving the equation 60 = 4F - 160, we find F = 70 degrees Fahrenheit. Therefore, R¹(60) = 70.

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Answer:

\(3 m/s^{2}\)

Explanation:

ΣF=ma

The two forces at play are the force applied and the force due to friction. As they are opposing forces set the direction being pushed as the positive in the x direction. the equation you come out with is 60 - 15=(15)A (we know mass to be 15kg). Solve for 3 m/s^2.

Increasing the temperature of the reaction solution can increase the rate of hydrolysis of sucrose, as higher temperatures can increase the rate of molecular motion.

Sucrose is a naturally occurring carbohydrate found in plants and fruits. It is also known as table sugar, or simply sugar. It is a disaccharide composed of glucose and fructose molecules joined together by a glycosidic bond. Sucrose is the most commonly used sweetener in food and beverage production and is found in many processed foods. It is used in baking, sweetening beverages, and as a preservative in some products. Sucrose is used as an energy source for the body. It is broken down by enzymes in the small intestine, releasing glucose and fructose which are then absorbed into the bloodstream and used for energy. Sucrose has a wide variety of uses in the food industry as a preservative, flavor enhancer, and sweetener.

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If a mass of 40.0 n is postponed from a spring that has a force constant of 200 n/m. then maximum value of the force is 317.94 N

A force is an effect with the ability to change a motion of an object. An massed object can change its velocity, or accelerate, as a result of a force.

According to the given question

weight of the object w=40 N

hence mass will be m=w/g = 40/9.81

spring constant k= 200 N/m

frequency f=10 Hz

anplitude generated A=2cm= 2*10^-2m

As the system is undamped equation for amplitude can be

simplified as

A= F/m[(w^2-Wo^2)^2+(bW/m)^2]^1/2 here b=0

so,

A= F/m(w^2-wo^2)

hence force is F=Am(w^2-wo^2)

F=0.02*(40/9.81)[(2

10)^2 -(200/40)*9.81 ]

= 317.94 N

hence maximum value of force is F= 317.94 N

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The generator will deliver a current of 447.6 A at a terminal potential difference of 2000 V.

To solve this problem, we need to use the following formula to calculate the electrical power output of the generator:

P_elec = η P_mech

where P_elec is the electrical power output, η is the efficiency of the generator (in this case, 80%), and P_mech is the mechanical power input to the generator (in this case, 1500 hp).

First, we need to convert the mechanical power input from horsepower to watts:

1 hp = 746 W

So, P_mech = 1500 hp × 746 W/hp = 1,119,000 W

Next, we can calculate the electrical power output of the generator:

P_elec = 0.8 × 1,119,000 W = 895,200 W

Now, we can use the formula for electrical power output to calculate the current delivered by the generator at a terminal potential difference of 2000 V:

P_elec = I V

where I is the current and V is the potential difference.

Rearranging the equation, we get:

I = P_elec / V = 895,200 W / 2000 V = 447.6 A

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Answer:

yes it doesn't matter

Explanation:

it doesn't matter because troughs and crests are the same and either can be used

Answer: C

Explanation: When you have a tomato for example, it absorbs every color but red and therefore, appears red.

Answer:

The answers as per the given problem is solved in the segment below.

Explanation:

According to the question,

(a)

\(F=ILB\)

By putting the values, we get

   \(=10(2\times 10^4)(5\times 10^{-5})\)

   \(=10 \ N\)

(b)

\(W=Fx\)

or,

    \(=Fvt\)

    \(=10(7.80\times 10^3)(3600)\)

    \(=2.81\times 10^8 \ J\)

(c)

\(\frac{1}{2}mv'^2 =\frac{1}{2}mv^2-\omega\)

or,

      \(v=[v^2-\frac{2 \omega}{m} ]^\frac{1}{2}\)

         \(=[(7.8\times 10^3)^2-\frac{2(2.81\times 10^8)}{1\times 10^5} ]^{\frac{1}{2} }\)

         \(=7.79\times 10^3 \ m/s\)

now,

\(\Delta v=v-v'\)

     \(=0.36 \ m/s\)

(d)

Answer: No, constant speed does not mean constant velocity.

A classic often used example would be to consider a car driving in circles. If the speedometer reads say 20 mph the entire time, then the speed of the car is held constant (ie the same). But the velocity is changing because velocity measures direction along with speed. The car is changing direction as it moves in a circle.

Answer:

To be better at something

Explanation:

I have Accelerated at cooking

Answer:

Acceleration means to speed up

Explanation:

Hello,

In other words, when the speed doubles the collision energy of the car, or simply the kinetic energy, is multiplied by two.

Answer:

All of the above

Explanation:

A circuit must have wires, a light bulb, a battery and no gaps if u want to light up a bulb.

Total Cost is =  $107,380 if The farm is 340 acres and had corn planted  add fertilizer to the soil before you plant this years' crop.

A fertiliser is a natural or artificial substance containing chemical elements (such as Nitrogen (N), Phosphorus (P) and Potassium (K)) that improve growth and productiveness of plants. Some synonyms include the terms "enrichment" or "plant nutrient".

Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.

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Answer:

The colder room will contain more air.

Explanation:

Assuming that there are no other sources of heating or cooling we can answer this question.

Under the assumption we can conclude that the room that has the lower temperature contains more air than the room at the higher temperature.

This is because when air is heated, it expands and becomes less dense. Contrarily, when air is cooled, it contracts and becomes more dense. Thus, if one room is maintained at a higher temperature than the other, the air in that room will be less dense and occupy a larger volume compared to the air in the cooler room.

When two identical rooms in a house are connected by an open doorway and the temperatures in the two rooms are maintained at different values, the room that contains more air is the one with the lower temperature

This is because of the principle of density and temperature.The air in the cooler room is denser than the air in the warmer room. Because the air is denser, there are more air molecules packed into the same space. As a result, there is more air in the cooler room than in the warmer room.

Temperature has an effect on air density, which influences the amount of air in a room. As temperature increases, air molecules gain kinetic energy and move around more quickly. This causes the air to expand and become less dense. So therefore when two rooms with different temperatures are connected, the room with the lower temperature has more air because its air is more dense.

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Answer:

D.

Driving and talking on any type of cell phone increases the chance of missing traffic signals.

Explanation:

correct on edge2021

Answer:

the answer is d thank me later

Explanation:

Answer:

this seems really complicated

Explanation:

Answer:

Copper

Explanation:

Power generation technologies such as coal-fired power plants nuclear reactors and wind turbines offer various strengths and weaknesses to power generation companies and their customers.

Renewable Energy Technologies is an umbrella term for energy production from renewable sources such as solar wind, hydro hydroelectric tidal biomass biofuels, and waste and geothermal. In my opinion, the most important technical need related to energy is to make energy sources cheaper safer, and more socially acceptable.

This is reflected in an inexhaustible resource that is environmentally friendly and cheap to process to generate energy. Renewable energy sources play an important role in ensuring sustainable energy with low emissions. It is already recognized that renewable energy technologies can significantly meet power demand and reduce emissions. The country has developed sustainable methods for its energy supply in recent years.

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Answer:

C.increased use of fossil fuels

Answer:

90 km/h

Explanation:

we just divide the distance by the time to get the speed.

Answer:

I think the second one

Explanation:

its the only one that makes since tell me if I'm wrong

Answer:

the answer is "The atmosphere is so thin that gas molecules rarely contact each other."

Explanation: just took the semester test  

Explanation:

weight of the piano = mg

w = 99 x 10 =990 N

Answer:

mass=56.12kg

Explanation:

PE=mgh

4620=m×9.8×8.4

make m subject of the formula...

m =4620/(9.8×8.4)

m=4620/82.32

m=56.12kg

Astronomers believe moon was originally a part of the earth.

It is said that years before a protoplanet - A large body of matter which orbited the sun - called Theia.

This protoplanet had a size which was almost equal to the size of planet mars. Due to some reason, Theia collided with earth and as a result of the collision, a large amount of earth's matter was ejected out into outer space which remained afloat for a long period of time.

Later this mass got accumulated into a spherical body that we now refer to as the moon which we see in the sky.

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Answer:

The answer for this question is B water vapor

Explanation:

just trust me bro

If the system does not move then the tension in the string is 4.90 N.

The tension in a given string is caused due to the forces pulling on the rope from either end.  We know that: force is equal to mass × acceleration. Assuming that the rope is stretched tightly, any change in acceleration or mass that the string is supporting will cause a change in tension in the rope. We can calculate the force of tension by using the formula:  T = mg + ma.

Ropes and cables are quite useful in exerting forces they are able to efficiently transfer a force over a significant distance.

When system does not move, then acceleration is zero.

Using Newton's second law,

F= m*a

(0.5kg* 9.8) - T = m(0)

T= 4.90 N

Hence option b) is correct.

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Note : Question given on portal is not complete. Here is the complete question.

Question: A 1.2 kg box rests on a horizontal surface. A 0.5kg mass is suspended from string, which passes over a pulley and is attached to the box . The string is under tension, not loose.

If the system does not move , what is the tension in the string/

a. 0.5 N  b.4.9N  c. 9.8N  d. 19.6N  e. 24.5N

Answer:

yes

Explanation:

Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces

Answer:

True

Explanation:

Took The Quiz

Given

mj = 65 kg

mc = 78 kg

voj = 5.75 m/s

after collision

vfj = vfc = 0 m/s

Procedure

The law of momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.

The velocity before the collision would be 4.8m/s

Answer:

The answer is in the picture.

Explanation: