what is the slope of the line tangent to the polar curve r = 2θ2 when θ = π ?

Answer:

Inertia is that quantity which depends solely upon mass. The more mass, the more inertia. Momentum is another quantity in Physics which depends on both mass and speed.

Explanation:

Answer:

so if it's 20 you should put 20 times 10 15 * 30 and 1.3 * 5 mg and if you put that milligrams in there it'll solve the destination I saw the white way you going so yeah just be careful at least you want to make the milligrams even a multimacy with the y i and replace it with the 14a

Answer:

The answer is A.) Covalent

Explanation:

They share a double covalent bond.

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Answer:

f = 99.96 N

Explanation:

Weight of Mr. Tracy, W = 85 kg

The coefficient of sliding friction between his socks and the floor is 0.12.

We need to find the force of friction that opposes Mr. Tracy's motion down the hall.

The force of friction is given by :

\(f=\mu mg\\\\f=0.12\times 85\times 9.8\\\\f=99.96\ N\)

So, the required force of friction is 99.96 N.

Both guitar and violin strings produce longitudinal waves. When these waves reflect back and forth between two points, they create standing waves which give rise to the different notes played on the instrument.

Unlike seismic waves, which are caused by earthquakes, guitar and violin strings produce waves that are audible to the human ear. Ultrasound waves, on the other hand, have a frequency higher than the range of human hearing and are used in medical imaging.

In summary, the waves produced by guitar and violin strings are longitudinal and create standing waves to produce different notes. These waves are audible to the human ear and different from seismic waves caused by earthquakes. Ultrasound waves, however, have a higher frequency and are used in medical imaging.

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Answer:

A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium such as air, water, or any other liquid or solid matter, as it propagates away from the source of the sound. The source is some object that causes a vibration, such as a ringing telephone, or a person's vocal chords.

Explanation:

The work done on a 50 Kg student by the elevator in 2 seconds if the elevator is accelerating upwards from rest at a rate of 2 ms⁻² would be

The total amount of energy transferred when a force is applied to move an object through some distance.

The work done is the multiplication of applied force with displacement.

Work Done = Force × Displacement

As given in the problem we have to find the work done  on a 50 Kg student by the elevator in 2 seconds if the elevator is  accelerating upwards from rest at a rate of 2 ms⁻²,

Lets us first calculate the displacement of the elevator in 2 seconds if it is accelerating upwards from rest at a rate of 2 ms⁻².

s = ut + 0.5at²

  = 0 + 0.5×2×2²

  = 4 meters

The work done on the elevator = mgh

                                                    =50×9.81×4

                                                    =1962 joules

Thus, the work done on the elevator would be 1962 joules.

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The weak nuclear force is responsible for the beta decay, therefore the false statement about strong and weak nuclear forces would be that both promote beta decay, therefore the correct answer is option C.

The ability of some unstable atoms to emit nuclear radiation spontaneously, typically in the form of alpha or beta particles frequently accompanied by gamma rays, is known as radioactivity.

The weak nuclear force is among the two nuclear forces that are responsible for beta decay.

The weak nuclear force is what causes beta decay, hence the incorrect statement regarding the strong and weak nuclear forces is that they both encourage beta decay. Therefore, option C is the best response.

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To find the distance that the car slides once the brakes are applied, we can use energy analysis. We know that the initial kinetic energy of the car is given by:

E_i = 0.5 * m * v^2 = 0.5 * 14700 N * 25 m/s^2 = 148750 J

And the final kinetic energy of the car is zero, since it comes to a stop. The change in kinetic energy is therefore:

ΔE = E_f - E_i = 0 - 148750 J = -148750 J

The work done by the brakes is equal to the change in kinetic energy, so we can write:

W = ΔE = -148750 J

The braking force is given as 7100 N, so the distance that the car slides is given by:

d = W/F = -148750 J / 7100 N = -20.9 m

Therefore, the car will slide a distance of approximately 20.9 meters once the brakes are applied.

Answer:

82 km/h

Explanation:

Given that A boat sailed 560 km in 8 hrs. It took three hours to travel the first 150 km. That is,

The remaining distance will be:

560 - 150 = 410 km

the remaining time will be:

8 - 3 = 5 hours

For the remaining Journey, average speed will be:

Speed = distance/time

Speed = 410/5

Speed = 82 km/h

Therefore, the average speed for the remaining journey will be 82 km/h

Answer:

the answer for your question is that they are unbalanced

The index of refraction of the plastic is approximately 8.39. We can use the formula: n = (λ * L) / d

To determine the index of refraction of the plastic, we can use the formula:

n = (λ * L) / d

where:

n is the index of refraction,

λ is the wavelength of light (632.8 nm),

L is the distance from the slits to the fluorescent coating (3.05 m), and

d is the separation between the two scratches (0.230 mm).

Converting the units to meters, we have:

λ = 632.8 nm = 632.8 × 10^(-9) m

L = 3.05 m

d = 0.230 × 10^(-3) m

Plugging the values into the formula, we get:

n = (632.8 × 10^(-9) m * 3.05 m) / (0.230 × 10^(-3) m)

= 8.39

Therefore, the index of refraction of the plastic is approximately 8.39.

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Option B) The presence of ozone was crucial to the origin of life some 4 billion years ago, this is not true.

You asked which of the following statements about ozone in Earth's stratosphere is not true. Here are the statements:

A) Ozone is a form of oxygen.
B) The presence of ozone was crucial to the origin of life some 4 billion years ago.
C) Ozone absorbs harmful ultraviolet light from the Sun.
D) The origin of the "ozone hole" over Antarctic has been traced to human-made CFCs.

The statement that is not true is:
B) The presence of ozone was crucial to the origin of life some 4 billion years ago.

While ozone plays an essential role in protecting life on Earth by absorbing harmful ultraviolet light, it was not crucial to the origin of life itself.

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Answer:

The answer is (A) "Polymers are substances that have relatively large molecules."

Polymer, any of a class of common or synthetic substances made out of very large molecules, called macromolecules, that are products of less complex synthetic units called monomers. Polymers make up a considerable lot of the materials in living beings, including, for instance, proteins, cellulose, and nucleic acids. In addition, they constitute the premise of such minerals as diamond, quartz, and feldspar and such man-influenced materials as solid, glass, to paper, plastics, and rubbers.

Answer:

I hope this helps

Explanation:

Evolution, is a process that results in changes in the genetic material of a population over time.

The radial velocity detection method works by detecting the Doppler shifts in the light spectrum of a star caused by the gravitational pull of an orbiting exoplanet.

The radial velocity detection method works as :

1. An exoplanet orbits its host star and exerts a gravitational pull on the star. This causes the star to wobble around their common center of mass.
2. As the star moves towards us, its light spectrum shifts towards the blue end (blue-shift) due to the Doppler effect. When it moves away from us, the spectrum shifts towards the red end (red-shift).
3. Astronomers use sensitive instruments, like a spectrograph, to detect these shifts in the star's light spectrum.
4. By carefully measuring the pattern and timing of these Doppler shifts, astronomers can determine the presence of an exoplanet and infer information about its mass, orbital period, and distance from the star.
5. Multiple observations are required to confirm the detection and characteristics of an exoplanet using the radial velocity method.

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The density of a cube that has a mass of 12. 6 and a measured  length of  4.1 cm is 0.18 kg/cm³

Density=mass/volume

mass=12.6

volume=68.9

density=12.6/68.9

density=0.18 kg/cm³

Density is defined as a material substance's mass per unit volume. Density is described by the equation d = M/V, where d stands for density, M for mass, and V for volume. Grams per cubic centimeter is the unit of measurement for density. For instance, compared to Earth's density of 5.51 grams, water has a density of 1 grams per cubic centimeter . Another way to express density is in kilograms per cubic meter (in meter-kilogram-second or SI units), It is easy to determine the relationship between mass and volume using density. For instance, the formula for determining a body's mass is M = Vd, while the formula for determining a body's volume is V = M/d.

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Answer: a. 2g/cm3

Explanation

density= mass/volume

60g/30 cm3 = 2 g/cm3

To solve this problem, we can use the concept of relative humidity. The relative humidity (RH) of air is defined as the ratio of the partial pressure of water vapor in the air to the saturation pressure of water vapor at the same temperature, expressed as a percentage. Mathematically, we can write:

RH = (Pv/Ps) x 100%

where Pv is the partial pressure of water vapor, Ps is the saturation pressure of water vapor at the same temperature, and the factor of 100% is used to express the result as a percentage.

Let's use this formula to solve the problem step by step:

We are given that the air has a temperature of 20°C and a specific humidity (i.e., the mass of water vapor per unit mass of dry air) of 8.6 g/kg. We can use a psychrometric chart or a calculator to find that the saturation pressure of water vapor at 20°C is about 2.34 kPa.

Using the definition of relative humidity, we can find the partial pressure of water vapor in the air:

RH = (Pv/Ps) x 100%

8.6 = (Pv/2.34) x 100%

Pv = 0.204 kPa

So the partial pressure of water vapor in the air at 20°C is 0.204 kPa.

We are told that the air is cooled to 5°C and its specific humidity decreases to 5 g/kg. We can repeat the same calculation as before to find the new partial pressure of water vapor:

RH = (Pv/Ps) x 100%

5 = (Pv/0.87) x 100% (The saturation pressure of water vapor at 5°C is about 0.87 kPa.)

Pv = 0.0435 kPa

So the partial pressure of water vapor in the air at 5°C is 0.0435 kPa.

Finally, we are told that the air is warmed back up to 25°C. We can use the same saturation pressure value as before (2.34 kPa) to find the new specific humidity:

RH = (Pv/Ps) x 100%

(Pv/2.34) x 100% = RH at 25°C

RH at 25°C = RH at 20°C

So the relative humidity remains constant during the warming process. Therefore, the partial pressure of water vapor in the air at 25°C is:

Pv = RH at 25°C x Ps

= RH at 20°C x Ps

= (0.204/2.34) x 2.34

= 0.204 kPa

Thus, the partial pressure of water vapor in the air at 25°C is the same as at 20°C, and its specific humidity is given by:

specific humidity = Pv/(p - Pv) = 0.204/(101.3 - 0.204) = 0.00202 kg/kg

Therefore, the water vapor content of the air at 25°C is 0.00202 kg of water vapor per kg of dry air.

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Answer:

40KJ

Explanation:

m=200g

V=20m/s

Ek=?

Ek=(m*V²)/2

Ek=(200*20²)/2

Ek=(200*400)/2

Ek=80 000/2

Ek=40 000 J =40KJ

The bucket is 0.8 meters away from the older child.

In this scenario, we have two children carrying a 2.4-meter long horizontal pole with a water bucket hanging from it. The older child supports twice the weight of the younger child. Let's denote the distance of the bucket from the older child as 'x' and the distance from the younger child as '2.4 - x'.

Since the older child is supporting twice the weight of the younger child, we can relate the forces using a balance of torques. Torque is the force applied at a distance from the pivot point. In this case, the pivot point is where the younger child is holding the pole.

The torque applied by the older child is equal to the weight supported by the older child multiplied by the distance 'x'. Similarly, the torque applied by the younger child is equal to half the weight supported by the older child multiplied by the distance '2.4 - x'. For the pole to be in equilibrium, these two torques must be equal. Therefore:

Older child's torque = Younger child's torque
(weight supported by older child) * x = (1/2 * weight supported by older child) * (2.4 - x)

Since we only need to find 'x', we can cancel out the weight supported by the older child from both sides of the equation:

x = (1/2) * (2.4 - x)

Solving for 'x', we get:

x = 0.8 meters

So, the bucket is 0.8 meters away from the older child.

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Answer:

the answer is B.

Explanation:

The ball that is thrown straight up has more kinetic energy and more speed than the ball that is thrown straight down. Both balls have the same kinetic energy and speed.

The kinetic energy of a body can be determined as the energy of a moving physical system because of its motion. Work has to be done on an object to change its kinetic energy.

The kinetic energy of the moving system can be expressed as K.E. = ½mv²  where ‘m’ is mass while ‘v’ is the velocity of the object.

The potential Energy of the physical system can be described as the energy stored due to its position. The mathematical formula for the calculation of the potential energy can be expressed in the form of P.E = m×g×h where ‘g’ is the gravitational acceleration, ‘m’ is the mass and ‘h’ is the height in meters

When two identical balls are thrown from a cliff, each with the same speed. One ball is thrown straight up, and the other ball is straight down. Both balls will have the same kinetic energy as well as speed.

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Answer:

4 131.05 kilometers

Explanation:

You should know the rest!!!!!!!!!!!!!!!!!!!!!

Area must the plates have is 1.26 x 10^-16 m^2

Given:

The capacitance of the parallel plate capacitor:

= 0.40F

The separation between the plates = 2.8-mm

To Find:

area of plates

Solution:

The capacitance of the parallel plate capacitor can be expressed as:

C = ε0*A/d

A = Cd/ε0

A = 0.40 x 0.0028/8.85*10^-12

A = 1.26 x 10^-16 m^2

Hence, area must the plates have is 1.26 x 10^-16 m^2

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Answer:

mass = 444.44 kg

Explanation:

To calculate the mass of the truck, we can use the formula for momentum:

Momentum (p) = mass (m) × velocity (v)

Given:

Momentum (p) = 40,000 kg·m/s

Velocity (v) = 90 m/s

We can rearrange the formula to solve for mass (m):

m = p / v

Substituting the given values:

m = 40,000 kg·m/s / 90 m/s

m ≈ 444.44 kg

Therefore, the mass of the truck is approximately 444.44 kg.

The highest order that contains the entire visible spectrum is the first order of diffraction grating with a spacing equal to the average wavelength of the visible spectrum.

The visible spectrum refers to the range of wavelengths of light that the human eye can perceive. It is a small part of the electromagnetic spectrum, which is the range of all possible wavelengths of electromagnetic radiation.

Diffraction grating is a device that consists of a large number of equally spaced parallel lines or slits. When light passes through a diffraction grating, it diffracts into multiple orders, each of which corresponds to a different angle of diffraction. The order of diffraction is determined by the spacing of the lines or slits and the wavelength of the light.

In the case of the visible spectrum, the highest order that contains the entire range of wavelengths is the first order. This is because the average wavelength of the visible spectrum is around 550 nm, and a diffraction grating with a spacing of 550 nm will diffract light into the first order, which will contain all the visible colors from violet to red.

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Answer:

4.8 mph

Explanation:

From the question,

Average speed = total distance/total time

V = d/t....................... Equation 1

Where d = distance, t = time

Given: d = 26.2 miles, t = 5.5 hours.

Substitute these values into equation 1

V = 26.2/5.5

V = 4.76 mph

V ≈ 4.8 mph

Answer:

4.8mph

Explanation:

Doing it now on EDG

For those doing the exam on EDG science rn, i wish you luck~

Have a good day!~ :D

Answer:

B

Explanation: