What are the two factors that determine the amount of gravitational force between two objects?

Answer:

9.1km/hr...................I think I'm not %100

Answer:

Thx!

Explanation:

The speed of the wind is 17 mph and the speed of the plane in still air is 119 mph.

Let the speed of the plane be x and the speed of the wind be y. Then, the speed of the plane with the wind becomes x + y, while the speed of the plane against the wind is x - y.

The distance traveled with the wind in 3 hours is 408 miles.

Therefore, we can write the equation as:

3(x + y) = 408

Divide both sides by 3:

x + y = 136  .... (1)

The distance traveled against the wind in 4 hours is also 408 miles.

Therefore, the equation can be written as:

4(x - y) = 408

Divide both sides by 4:

x - y = 102  .... (2)

Now we can solve these two equations using the elimination method.

Add equations (1) and (2):

x + y + x - y = 136 + 1022x = 238x = 119 mph

Therefore, the speed of the plane in still air is 119 mph.

Now, substitute this value of x in equation (1):

119 + y = 136y = 17 mph

Therefore, the speed of the wind is 17 mph.

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The correct question is:

A plane flies 408 mi with the wind in 3 hr. The return trip takes 4 hr. What is the speed of the wind and the speed of the plane in still air?

The expression for the kinetic energy in the wave is:K = 0.5 μv² where K = kinetic energy per unit length of wave (J/m)μ = line density (kg/m)v = wave velocity (m/s)

The expression for the power in the wave is:P = Kf where P = power per unit length of wave (W/m)K = kinetic energy per unit length of wave (J/m)f = wave frequency (Hz)Given that the amplitude of the wave = 0.25 m Line density = 0.601 kg/m Tension in the line = 1500 N Wave frequency = 5 Hz First, calculate the wave velocity:Wave velocity, v = sqrt(T/μ) where T = tension in the linev = wave velocity T = 1500 Nμ = 0.601 kg/mv = sqrt(T/μ) = sqrt(1500/0.601) = 56.01 m/s Next, calculate the kinetic energy per unit length of wave:K = 0.5 μv²K = 0.5 × 0.601 × 56.01² = 953.3 J/m The power in the wave is:P = KfP = 953.3 × 5 = 4766.5 W/m

Therefore, the kinetic energy in the wave is 953.3 J/m and the power in the wave is 4766.5 W/m.

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(a) The charge of -1.2C corresponds to approximately -7.5 × 10^19 electrons. (b) The mass of this many electrons is approximately 4.8 × 10^-17 kilograms.

(a) To determine the number of electrons necessary to produce a charge of -1.2C, we need to consider the elementary charge. The elementary charge represents the charge carried by a single electron, which is approximately -1.6 × 10^-19 coulombs. Dividing the given charge by the elementary charge, we find the number of electrons.

Number of electrons = -1.2C / (-1.6 × 10^-19C/electron) ≈ 7.5 × 10^19 electrons

(b) To calculate the mass of this many electrons, we utilize the mass of a single electron. The mass of an electron is approximately 9.1 × 10^-31 kilograms. Multiplying the number of electrons by the mass of a single electron, we obtain the mass.

Mass of electrons = (7.5 × 10^19 electrons) × (9.1 × 10^-31 kg/electron) ≈ 4.8 × 10^-17 kilograms

Therefore, the charge of -1.2C corresponds to approximately -7.5 × 10^19 electrons, and the mass of this many electrons is approximately 4.8 × 10^-17 kilograms.

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Answer: c and a

Explanation:

Answer:thx

Explanation:

Answer:

A

Explanation:

I think it's A, sorry if I'm wrong

Answer:

Explanation:

correct me if im wrong

Answer:

We conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.

Hence, option D is correct.

Explanation:

Given

To determine

Mass m = ?

Important Tip:

Using the formula

\(F = ma\)

where

now substituting F = 500, and a = 75 m/s² in the formula

\(F = ma\)

\(500 = m(75)\)

switch sides

\(m\left(75\right)=500\)

Divide both sides by 75

\(\frac{m\cdot \:75}{75}=\frac{500}{75}\)

simplify

\(m=\frac{20}{3}\)

\(m=6.7\) kg

Therefore, we conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.

Hence, option D is correct.

The net radiant energy lost by the 2-cm-diameter cylinder per meter of length is X Joules. The temperature of the 6-cm-diameter cylinder is Y °C.

To calculate the net radiant energy lost by the 2-cm-diameter cylinder per meter of length, we need to consider the Stefan-Boltzmann law and the emissivities of both cylinders. The formula for net radiant heat transfer is given:

Q_net = ε1 * σ * A1 * (T1^4 - T2^4)

Where:

- Q_net is the net radiant energy lost per meter of length.

- ε1 is the emissivity of the 2-cm-diameter cylinder.

- σ is the Stefan-Boltzmann constant (5.67 x 10^-8 W/(m^2·K^4)).

- A1 is the surface area of the 2-cm-diameter cylinder.

- T1 is the temperature of the 2-cm-diameter cylinder.

- T2 is the temperature of the surroundings (27 °C).

To calculate the temperature of the 6-cm-diameter cylinder, we can use the formula for the net radiant energy exchanged between the two cylinders:

Q_net = ε1 * σ * A1 * (T1^4 - T2^4) = ε2 * σ * A2 * (T2^4 - T3^4)

Where:

- ε2 is the emissivity of the 6-cm-diameter cylinder.

- A2 is the surface area of the 6-cm-diameter cylinder.

- T3 is the temperature of the 6-cm-diameter cylinder.

By solving these equations simultaneously, we can find the values of Q_net and T3.

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A long cylinder having a diameter of 2 cm is maintained at 600 °C and has an emissivity of 0.4. Surrounding the cylinder is another long, thin-walled concentric cylinder having a diameter of 6 cm and an emissivity of 0.2 on both the inside and outside surfaces. The assembly is located in a large room having a temperature of 27 °C. Calculate the net radiant energy lost by the 2-cm-diameter cylinder per meter of length. Also, calculate the temperature of the 6-cm-diameter cylinder

Because of their different masses, the heavy lead ball and the light aluminium ball of the same size that roll down an incline have distinct kinetic and potential energies.

The peak of kinetic energy occurs right after you stop exerting effort to start the process. Either the top of the first hill or the ball's highest point on the second hill could experience the most gravitational potential energy.

The potential energy will be converted to kinetic energy if they are rolling down the slope or begin to roll down the hill due to gravity.

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Answer:

Potassium and iodine

Explanation: I took the quick check

AU is the distance from the earth to the sun, and solar mass represents a measurement equal to the mass of our sun.

The units applied in astronomy is quite different from the units applied in daily life. The unit called astronomical units (AU) describes the distance from the earth to the sun. The unit solar mass represents the mass of the sun and is taken to be equal to 1.989 x 10^30 kilograms.

Therefore, the difference between the AU and solar mass is that; AU is the distance from the earth to the sun, and solar mass represents a measurement equal to the mass of our sun.

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If the cars are traveling at a speed of 60 mph, and it takes them 2 hours to meet, the meeting point would be 60 mph x 2 hours = 120 miles from Boston.

To find how far from Boston these two cars will meet, we need more information. The question mentions starting points C and D but does not provide any distances. Without knowing the distances between these points and Boston, we cannot determine the exact distance from Boston where the cars will meet.

However, we can determine the general concept of how to find the meeting point. Since both cars are traveling at the same speed, they will cover equal distances in equal amounts of time.

To find the meeting point, you would need to find the time it takes for the cars to meet, and then multiply that time by the speed of the cars to find the distance.

For example, if the cars are traveling at a speed of 60 mph, and it takes them 2 hours to meet, the meeting point would be 60 mph x 2 hours = 120 miles from Boston.

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Answer:

That's Rontgen

Explanation:

Wilhem Rontgen

Answer:

155 118 in

Explanation:

3.94 km *  1000 m / km  *  39.37 in / m = 155 118 in

When the capacitor is discharging, the current in the circuit increases with time as the capacitor releases its stored charge. This is because the capacitor now acts as a temporary load, discharging its stored energy.

In this lab, you will investigate the behavior of a capacitor in an RC circuit during charging and discharging. The charge and voltage on the capacitor change with time during these processes. When the capacitor is charging, the current in the circuit decreases with time as the capacitor accumulates charge. This is because the capacitor acts as a temporary source of current while it charges up. On the other hand, when the capacitor is discharging, the current in the circuit increases with time as the capacitor releases its stored charge. This is because the capacitor now acts as a temporary load, discharging its stored energy.

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Answer:7777

Explanation:

Answer:

Explanation:

An antagonist does the opposite of an agonist. It binds to receptors, and stops the receptor from producing a desired response.

Answer:

4 target heart rate. is the answer

Explanation:

hope its right

Number 1 and A are correct, but B is not correct

B ---> Distance = 1/2*(Velocity)*(Time)

Distance = 1/2(5s)*(-12m/s)

Distance = 5(s)*(-6m/s)

Distance = -30m

Answer:

Answer in Explanation

Explanation:

Whenever we talk about the gravitational potential energy, it means the energy stored in a body due to its position in the gravitational field. Now, we know that in the gravitational field the work is only done when the body moves vertically. If the body moves horizontally on the same surface in the Earth's Gravitational Field, then the work done on the body is considered to be zero. Hence, the work done or the energy stored in the object while in the gravitational field is only possible if it moves vertically. This vertical distance is referred to as height. This is the main reason why we require height in the P.E formula and calculations.

The derivation of this formula is as follows:

Work = Force * Displacement

For gravitational potential energy:

Work = P.E

Force = Weight = mg

Displacement = Vertical Displacement = Height = h

Therefore,

P.E = mgh

The closest answer choice is (e) 190.1 kcals, but this is significantly higher than the calculated value.

The mechanical work output can be calculated as the product of force, distance, and the number of revolutions of the flywheel:

Work output = force * distance * number of revolutions

The force applied to the pedals can be calculated from the resistance:

force = resistance / pedal arm length

where the pedal arm length is the distance from the center of the pedal to the center of the pedal crank. Let's assume a pedal arm length of 17 cm (0.17 m) for this calculation.

force = 3.0 kp / 0.17 m

         = 17.65 N

The distance traveled with each revolution of the flywheel is given as 6 m.

The number of revolutions in 45 minutes can be calculated as:

number of revolutions = 75 revolutions/min * 45 min \

                                     = 3375 revolutions

Putting all the values together, we get:

Work output = force * distance * number of revolutions

Work output = 17.65 N * 6 m * 3375 revolutions

Work output = 357525 J

Converting this to kilocalories:

Work output = 357525 J * 1 kcal / 4186 J

Work output = 85.32 kcal

Therefore, the total amount of mechanical work output in kcals is approximately 85.32 kcals.

The closest answer choice is (e) 190.1 kcals, but this is significantly higher than the calculated value.

None of the answer choices are particularly close, so it's possible that there was an error in the question or the answer choices.

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so the value of wavelength λ=0.75*10^4 m

Answer:

8 v

Explanation:

power = watts = v i

                 36   = v (4.5)

                   v = 8 v

Answer:

the wavelength is 9.8 meters

Explanation:

We can use the relationship:

Velocity = wavelenght*frequency.

Initially we have:

wavelenght = 4.9m

velocity = 9.8m/s

then:

9.8m/s =  4.9m*f

f = 9.8m/s/4.9m =  2*1/s

now, if the velocity is doubled and the frequency remains the same, we have:

2*9.8m/s = wavelenght*2*1/s

wavelenght = (2*9.8m/s)*(1/2)s = 9.8 m

Answer:

9.8

Explanation:

The third piece of the bomb flies off horizontally in the direction opposite to the vector sum of the velocities of the other two pieces.

To determine the direction of motion of the third piece, we need to calculate the vector sum of the velocities of the first two pieces. Let's break down the given velocities into their x and y components.

Piece 1: Velocity = 20 m/s at 60 degrees

Piece 2: Velocity = 12 m/s at 120 degrees

Using trigonometry, we can find the x and y components of the velocities:

Piece 1:

\(V1x = 20 m/s * cos(60) = 10 m/sV1y = 20 m/s * sin(60) = 17.32 m/s\)

Piece 2:

\(V2x = 12 m/s * cos(120) = -6 m/sV2y = 12 m/s * sin(120) = 10.39 m/s\)

Now, we can find the vector sum of the x and y components:

\(Vx = V1x + V2x = 10 m/s + (-6 m/s) = 4 m/sVy = V1y + V2y = 17.32 m/s + 10.39 m/s = 27.71 m/s\)

Finally, we can find the magnitude and direction of the resulting velocity:

\(V = sqrt(Vx^2 + Vy^2) = sqrt((4 m/s)^2 + (27.71 m/s)^2) ≈ 27.99 m/s\)

The direction of motion of the third piece is opposite to this resulting velocity, so it will be approximately 180 degrees.

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Answer:

30J

Explanation:

Given parameters:

Mass of box  = 1.5kg

Height  = 2m

Acceleration due to gravity  = 10N/kg

Unknown:

Change in gravitational potential energy  = ?

Solution:

 The change in gravitational potential energy is given as:

      ΔGPE  = mgh  

m is the mass

g is the acceleration due to gravity

h is the height

   ΔGPE  = 1.5 x 10 x 2  = 30J

When a substance lose an electron, it becomes positively charged. The dust particle will acquire positive charge when it losses electrons when it passes through the positively charged grid.

An atom contains equal number of electrons and protons. Hence, it possess no net charge and being neutral. When the atom lose or gain electrons it becomes ions.

When the atom lose one electron its number of protons dominates over that of electrons and it acquires a positive charge. When the atom gain an electron the reverse happen and it acquires a negative charge.

Here, the dust particle loses its electron to the positive grid thus it will gain a positive charge.  

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Answer:

Correct option is D)

Steel

Answer:

Steel gives

Explanation:

Glass: 50−90GPa

Rubber:0.01−0.1GPa

Steel:200GPa

Copper: 117GPa

If your guitar pick is producing a harsh sound, you should make sure your wrist and arm are at a ninety degree angle.

Making of harsh sounds due to the pick from a guitar is seen often during guitar practices from beginners. There are numerous reasons for this. One of the reasons that can be considered as the most often mistake is the way a guitarist holds the pick. In order to avoid the sound produced by the pick, make sure that your wrist and arm are in a ninety degree angle.

This will provide a comfortable position to use the picks. You should not hold the pick firmly either. Try to hold the pick gently. Remember lesser the pick gets in contact with the string, lesser the sound produced. Also try to use a proper pick for guitar.

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