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I will be asking these questions from Today to 11-8 which is this Sunday.

Answer:

the average speed in annual work out is 46.5

To determine the electric field at the location of charge q, we need to calculate the contribution of each of the four charged particles and then sum them up. Let's assume each charged particle has a charge of +q.

(a) The electric field due to a single charged particle at a distance r is given by the equation E = (ke * q) / r^2, where ke is the Coulomb's constant. The magnitudes of the electric fields due to each charged particle are as follows:

Particle A: E_A = (ke * q) / a^2

Particle B: E_B = (ke * q) / a^2

Particle C: E_C = (ke * q) / (sqrt(2) * a)^2

Particle D: E_D = (ke * q) / (sqrt(2) * a)^2

The total electric field at the location of charge q is the vector sum of these individual electric fields. Since the electric fields due to particles A and B are along the positive x-axis and the electric fields due to particles C and D are along the negative y-axis, the resultant electric field can be found using vector addition:

E_total = E_A + E_B - E_C - E_D

The direction of the electric field can be determined by finding the angle it makes counterclockwise from the positive x-axis.

(b) The total electric force exerted on charge q can be calculated using the equation F = q * E_total, where E_total is the total electric field at the location of charge q calculated in part (a). The magnitude of the electric force is given by the absolute value of F.

The direction of the electric force can be determined by finding the angle it makes counterclockwise from the positive x-axis.

Please note that the figure mentioned in the question is missing, so the exact calculations and directions cannot be provided without knowing the specific arrangement of the charges.

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The decrease in kinetic energy during the collision is 1187.62 J.

Before the collision, the fullback's momentum is:

p1 = m1v1 = (87 kg)(5.0 m/s) = 435 kg*m/s (to the east)

The opponent's momentum is:

p2 = m2v2 = (97 kg)(-3.5 m/s) = -339.5 kg*m/s (to the west)

The total momentum before the collision is:

p1 + p2 = (435 kgm/s) + (-339.5 kgm/s) = 95.5 kg*m/s (to the east)

After the collision, the two players move together as one mass. Let vf be their common final velocity. Then the total momentum after the collision is:

p = (m1 + m2)vf = (87 kg + 97 kg)vf = 184 kg*vf (to the east)

Since momentum is conserved, we can equate the total momentum before and after the collision:

p1 + p2 = p

95.5 kgm/s = 184 kgvf

vf = 0.52 m/s (to the east)

Therefore, the velocity of the players just after the tackle is 0.52 m/s to the east.

To find the decrease in kinetic energy during the collision, we first need to find the initial kinetic energy:

KEi = (1/2)m1v1^2 + (1/2)m2v2^2

KEi = (1/2)(87 kg)(5.0 m/s)^2 + (1/2)(97 kg)(-3.5 m/s)^2

KEi = 1211.75 J

Since the collision is perfectly inelastic, the final velocity is the same for both players, and their combined mass is 184 kg. Therefore, the final kinetic energy is:

KEf = (1/2)mvf^2

KEf = (1/2)(184 kg)(0.52 m/s)^2

KEf = 24.13 J

The decrease in kinetic energy during the collision is:

ΔKE = KEi - KEf

ΔKE = 1187.62 J

Therefore, the decrease in kinetic energy during the collision is 1187.62 J.

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The temperature of the layer of gas that produces the visible light of the sun is 5800 K.

The correct option from the given choices is d. 5800 K. The layer of gas in the sun's atmosphere that emits visible light is known as the photosphere. It is the visible surface of the sun that we observe. The temperature of the photosphere is approximately 5800 K.

This temperature is determined by studying the electromagnetic radiation emitted by the sun and analyzing its spectrum. The photosphere is a region where the gas is dense enough to emit visible light and has a temperature that supports such emission.

It is important to note that the temperature of the sun can vary in different layers of its atmosphere, but the photosphere is the layer where the visible light is primarily emitted, and its temperature is around 5800 K.

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Answer:

Astronomers?

Explanation:

Answer:

Astrophysicist?

Explanation:

The intensity of 25 x 10⁶W/m² is transmitted into material with 50 index of refraction.

Given- Intensity(i) = 1000W/m²

α=50 (index)

Theoretical Aspect-

\(I=\frac{\alpha i^2}{2}\)

calculations-

I= 50 (10³)²/2

=25 x 10⁶W/m²

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Answer: Gravitational forces are action-at-a-distance forces

Explanation:

Gravitational forces are action-at-a-distance forces that act between two objects even when they are held some distance apart. For example If you watch a roller coaster car move along its course, then you are witnessing an action-at-a-distance.

To solve the problem, we can use the formula:

time = distance ÷ speed

where distance is in kilometers and speed is in kilometers per hour.

Plugging in the given values, we get:

time = 1500 km ÷ 300 km/h

time = 5 hours

Therefore, it would take 5 hours for the high speed train to travel 1,500 km at 300 km/h.

What is distance?

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equation of regression: y=14.4-8.69x_1+13.52x_2

Where, x_1=$

length of service in years x_2=$

wage rate in dollars y=$ job satisfaction test score higher scores indicate greater job satisfaction

Here, we will use the given regression equation to predict the value of job satisfaction test score using length of service and wage rate. The Minitab computer output for the given regression equation is given below:

Notice that the computer output contains missing entries which we need to complete using the given regression equation. From the regression equation we can see that the constant term (or the intercept) is $14.4 the coefficient of x_1 is $-8.69 and the coefficient of x_2 is $13.52.

Hence, we can complete the Minitab output table as follows:

The regression equation is:

Job Satisfaction Test Score = 14.4 - 8.69

Length of service + 13.52

Wage rate Predictor Coe f SE Coef T P Constant 14.40 0.85 16.93 0.000 Length of service -8.69 1.40 -6.20 0.000 Wage rate 13.52 1.55 8.71 0.000

S = 10.81

R-Sq = 72.2%

R-Sq(adj) = 68.5%

Analysis of Variance Source DF SS MS F P Regression 2 32429 16214 39.05 0.000

Residual Error 24 12504 521

Total 26 44933

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Answer:

In 1687, Newton published one of the most important scientific books in history, the Philosophiae Naturalis Principia Mathematica, commonly known as the Principa. It was in this work that he first laid out his three laws of motion.

Answer: Different types of fuels have varying compositions and release different amounts of pollutants when burned. Here are some common types of fuels and the pollutants associated with them:

Fossil Fuels:

a. Coal: When burned, coal releases pollutants such as carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter (PM).

b. Petroleum (Oil): Burning petroleum-based fuels like gasoline and diesel produces CO2, SO2, NOx, volatile organic compounds (VOCs), and PM.

Natural Gas:

Natural gas, which primarily consists of methane (CH4), is considered a cleaner-burning fuel compared to coal and oil. It releases lower amounts of CO2, SO2, NOx, VOCs, and PM.

Biofuels:

Biofuels are derived from renewable sources such as plants and agricultural waste. Their environmental impact depends on the specific type of biofuel. For example:

a. Ethanol: Produced from crops like corn or sugarcane, burning ethanol emits CO2 but generally releases fewer pollutants than fossil fuels.

b. Biodiesel: Made from vegetable oils or animal fats, biodiesel produces lower levels of CO2, SO2, and PM compared to petroleum-based diesel.

Renewable Energy Sources:

Renewable energy sources like solar, wind, and hydropower do not produce pollutants during electricity generation. However, the manufacturing, installation, and maintenance of renewable energy infrastructure can have environmental impacts.

It's important to note that the environmental impact of a fuel also depends on factors such as combustion technology, fuel efficiency, and emission control measures. Additionally, advancements in clean technologies and the use of emission controls can help mitigate the environmental impact of burning fuels.

Answer:

twice as much work

Explanation:

OPTIONS:-

A. 960 V

B. 0.60 V

C. 1.7 V

D. 0.0010 V

FORMULA :- V= I× R

WHERE

I -> CURRENT

R -> RESISTANCE

so your answer:-

V= IR

\(V = 0.025 \times 24 \\ V = \frac{ \cancel{25}}{ \cancel{1000} {}^{ \: \: \: 40} } \times 24 \\ V = \frac{ \cancel4 \times 6}{ \cancel4 \times 10} \\ V = 0.60Volts\)

so your ANSWER is OPTION B.

V = 0.60 Volts (V)

Answer:

f = 1/0.3 s

Explanation:

have a nice day.

Answer:

Reena

Explanation:

200 / 5 = 40 metres in a minute

200 / 4 = 50 metres in a minute,

Therefore Reena is faster

Answer:

4N/m

Explanation:

pressure = force/area

pressure = 200/50 N/m

= 4N/m

Explanation:

In order from highest to lowest energies the parts of electromagnetic spectrum are named as

Gamma rays,

X-rays,

ultraviolet radiation,

visible light,

infrared radiation,

and radio waves.

Microwaves are a subsections of radio waves. They are used in microwave ovens to heat the food items.

This is expected EM spectrum in field of science.

a. The ammeter reading should be I = V/R = 27V/9ohm = 3A.

b. The voltmeter reading should be 27V, since it is connected in parallel with the battery and measures the voltage across it.

c. The power delivered to the resistor can be calculated using P = VI = (I^2)*R = (3A)^2 * 9ohm = 27W.

d. The energy delivered to the resistor per hour can be calculated using E = Pt = 27W * 1 hour = 27 Wh.

What is an ammeter?

An ammeter is a measuring instrument used to measure electric current flowing through a circuit. It is typically connected in series with the circuit so that all the current flowing in the circuit passes through the ammeter. Ammeters can be analog or digital, and they are designed to measure different ranges of current. They are an essential tool for diagnosing and troubleshooting electrical problems, and they are commonly used in industrial, commercial, and residential applications.

What is a voltmeter?

A voltmeter is a measuring instrument used to measure the electric potential difference (voltage) between two points in an electrical circuit. It is typically connected in parallel with the circuit component or circuit section whose voltage is to be measured. When a voltage is present in the circuit, the voltmeter displays the measured value in volts, which can help to determine the performance or condition of the circuit.

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a. The ammeter reading should be I = V/R = 27V/9ohm = 3A.

b. The voltmeter reading should be 27V, since it is connected in parallel with the battery and measures the voltage across it.

c. The power delivered to the resistor can be calculated using P = VI = (I^2)*R = (3A)^2 * 9ohm = 27W.

d. The energy delivered to the resistor per hour can be calculated using E = Pt = 27W * 1 hour = 27 Wh.

An ammeter is a measuring device used to determine the amount of electric current passing through a circuit. It is usually wired in series with the circuit so that all current passing through it goes through the ammeter. Ammeters can be analogue or digital, and they are used to detect various current levels. They are an indispensable instrument for diagnosing and troubleshooting electrical issues, and they are widely used in industrial, business, and domestic settings.

A voltmeter is a measuring device used to determine the difference in electric potential (voltage) between two locations in an electrical circuit. It is usually linked in parallel with the circuit component or portion whose voltage is to be measured. When a voltage is present in the circuit, the voltmeter shows the measured value in volts, which can aid in determining the circuit's performance or state.

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Comets are small asteroid-like bodies when they are far from the Sun, traveling in highly ellipical orbits about the Sun. Comets go around the Sun in a highly elliptical orbit

How to find speed of a comet?

Speed of the comet can be determined by using conversation of energy = initial kinetic energy + initial potential energy of comet = final kinetic energy + final potential energy of comet

We know,

M = mass of sun = 1.989 x 1030 kg

m = mass of comet

vi = initial speed of comet = 20000 m/s

ri = initial distance from center of sun = 2.4 x 1011 m

vf = final speed of comet = ?

rf = final distance from center of sun = 5.2x 1010 m

Using conservation of energy

initial kinetic energy + initial potential energy of comet = final kinetic energy + final potential energy of comet

(0.5) m vi2 - GMm/ri = (0.5) m vf2 - GMm/rf

(0.5) vi2 - GM/ri = (0.5) vf2 - GM/rf

(0.5) (20000)2 - (6.67 x 10-11)(1.989 x 1030)/(2.4 x 1011) = (0.5) vf2 - (6.67 x 10-11)(1.989 x 1030)/(5.2x 1010)

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Answer:

a

Explanation:

Its mass times m/s there is no m/s so 1500x0 = 0

This question involves the concept of the law of conservation of momentum.

The momentum of the rocket is "c 1,500 kg x m/s forward"

The law of conservation of momentum states that the total momentum of the system must be constant. It means that the change in momentum of the system must be equal to zero. Here the system is the rocket and the gases. So, applying the law of conservation of momentum to this system, we get:

Momentum of Gas + Momentum of Rocket = 0

Taking, forward direction as positive and the backward direction as negative:

\(- 1500\ kg.m/s+Momentum\ of\ Rocket = 0\\\)

Momentum of Rocket = 1500 kg.m/s (forward)

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The attached picture illustrates the scenario of the question.

Answer:

73.1 m/s

Explanation:

Given:

Δx = 160 m

v = 6.9 m/s

t = 4 s

Find: v₀

Δx = ½ (v + v₀) t

160 m = ½ (6.9 m/s + v₀) (4 s)

v₀ = 73.1 m/s

The variable that changes is the period of the motion.

The term simple harmonic motion refers to a regular repeating motion. The acceleration of the SHM is always directed towards the center. The spring is an example of a system undergoing simple harmonic motion.

From the description in the question, the variable that changes is the period of the motion.

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Answer:

electromotive force (emf)

Explanation:

Answer:

Hello, I believe it would have a negative charge considering protons have a positive charge while elctrons have a negative charge

Explanation:

Answer:

i think its 2

Explanation:

im not sure

Answer:

2

Explanation:

im not sure that this question was asked the right way though

Answer:

79 N     ( the same)

Explanation:

Answer:

B

Explanation:

Inexperienced drivers are higher risk

Answer:b

Explanation:a higher-than-average risk

"170 Degrees" is a temperature measurement unit commonly used in the Fahrenheit scale. If you are trying to convert "170 Degrees" from Fahrenheit to Celsius, it is important to understand how the two scales relate to each other.

The Fahrenheit scale is based on 32° being the temperature at which water freezes and 212° being the temperature at which water boils. In contrast, the Celsius scale has 0° as the temperature at which water freezes and 100° as the temperature at which water boils.

To convert "170 Degrees" from Fahrenheit to Celsius, you can use the formula:

C = (F - 32) * 5/9, where F is the temperature in Fahrenheit and C is the temperature in Celsius.

Plugging in "170 Degrees" for F, we get:

C = (170 - 32) * 5/9 = 76.67 * 5/9 = 76.67 * 0.5556 = 42.78°C.

So "170 Degrees" Fahrenheit is equivalent to 42.78°C in the Celsius scale.

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