A vessel at rest at the origin of an xy coordinate system explodes into three pieces. Just after the explosion, one piece, of mass m, moves with velocity (30 m/s) and a second piece, also of mass m, moves with velocity (30 m/s) . The third piece has mass 3m. Just after the explosion, what are the (a) magnitude and (b) direction of the velocity of the third piece

Answer:

energy? or power? I'm not really sure but using the quizzes app really help with science problems

Countries limited trade, investment, and aid to South Africa.

During the era of apartheid in South Africa, which lasted from 1948 to 1994, the South African government implemented a system of institutionalized racial segregation and discrimination.

The policy of apartheid denied basic human rights and freedoms to the non-white population, particularly black South Africans. In response to this unjust system, many countries, including the United States and other nations, implemented economic sanctions against South Africa.

Economic sanctions are measures taken by countries or international bodies to exert pressure on a government or regime by limiting or restricting trade, investment, and financial aid.

In the case of apartheid South Africa, these economic sanctions were aimed at isolating the South African government and encouraging them to dismantle the apartheid system.

By limiting trade, investment, and aid to South Africa, countries sought to economically isolate the apartheid regime and show their disapproval of its discriminatory policies. The goal was to create economic pressure and encourage the South African government to change its stance on apartheid and work towards ending the system.

It is important to note that international organizations and world leaders also played significant roles in the fight against apartheid. However, the specific statements mentioned in the options provided do not accurately reflect their actions during that time.

Overall, the primary approach taken by countries was to limit trade, investment, and aid to South Africa as a means to pressure the government and contribute to the eventual dismantling of apartheid.

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Answer:

Water is polar molecule. ... The ionic compounds are dissolved as these ions attract the hydrogen( negative charge attraacts them) and oxygen (positive charge attracts them) whereas methanol is a polar molecule and forms hydrogen bond with water molecules and hence dissolves.

Explanation:

Answer:

\(6.5646\times 10^{16}~ \text{Hz}\)

Explanation:

\(\text{Frequency,}~ f= \dfrac{c}{\lambda} = \dfrac{3\times 10^8 }{4.57 \times 10^{-9}} = 6.5646\times 10^{16}~ \text{Hz}\)

The geothermal gradient in the tectonically stable region is approximately 21°C/km, indicating that the temperature increases by an average of 21 degrees Celsius per kilometer of depth.

To calculate the geothermal gradient, we need to find the rate at which the temperature increases with depth.

Temperature at the surface (T₁) = 14°C

Temperature at a depth of 5.0 km (T₂) = 119°C

Temperature difference = T₂ - T₁ = 119°C - 14°C = 105°C

Depth difference = 5.0 km - 0 km = 5.0 km

Geothermal gradient = Temperature difference / Depth difference

Geothermal gradient = 105°C / 5.0 km

Calculating this expression, we find:

Geothermal gradient ≈ 21°C/km

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According to the periodic table, aluminum has an atomic number of 13 and 13 protons, so an atom with 13 protons and 15 neutrons is an isotope of aluminum.

Aluminum is a silver-white light metal. Soft and easy to play. Aluminum is used in a variety of products including cans, foils, kitchenware, window frames, beer kegs, and aircraft components. One isotope of aluminum, aluminum 26 (26Al), contains 13 protons and 13 neutrons in its nucleus. Unlike the stable isotope aluminum 27, which contains an extra neutron, 26Al is radioactive and decays with an exponential lifetime of about 1 million years.

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3 electrical equipments consider for this circuit diagram are,

1. Ammeter

2. Resistance

3. Resistance

The circuit diagram with 6 lamps and 3 electrical equipments and 1 power source with open circuit form is represented as,

Answer:

D

Explanation:

study island. first answer is wrong

The average daily number of sunspots will increase throughout 1945. therefore the correct answer is option D.

It is a system in which the sun's gravitational attraction causes all the planets and celestial bodies to revolve around it.

As specified in the issue statement On the surface of the Sun are spots known as sunspots. Increased sunspots imply that the Sun is more active and is producing more energy since they are a sign of strong magnetic fields.

The average daily number of sunspots from 1900 to 1944 is shown in the graph below. The average for each data point is for one month.

The graph's sequence of peaks and valleys should be noted. A solar cycle is the period of time from one minimum (trough) to the next. Solar cycles can last from nine to fourteen years.

Thus, The average daily number of sunspots will increase throughout 1945, therefore the correct answer is option D.

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In the chemical reaction described in the passage, the product is Ammonia (NH₃)

A chemical reaction is a procedure that causes one group of chemical components to change chemically into another.

Chemical reactions, which can frequently be described by a chemical equation, traditionally include changes that only affect the locations of electrons in the formation and dissolution of chemical bonds between atoms, with no change to the nuclei (no change to the elements present).

The given chemical reaction of  chemical factories  is:

H₂ + N₂ → NH₃

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Answer:

car travel

precipitation

O temperature

Explanation:

Jet streams which is the ability of the object to move at a high speed due to its power is common among some given set of objects. Some are powered by the objects fuel while others are entirely different.

The above given options are actually affected by the jet streams.

Answer:

B. precipitation

C. temperature

Explanation:

this is late but for anyone that's looking for this, hope this will help! :D

Answer:

leaves will deverge

Explanation:

because of the nagwtive charge will become positive

Answer:

The answer is Muscular endurance

Explanation:

It is this because your seeing how long your muscles can with stand. I answered by guessing lol.

The distance between the specimen and the objective lens is called the working distance.

A specimen is a sample of a material, such as a plant, animal, mineral, or other material, used for scientific study or testing. Specimens can be collected from the natural environment or obtained from a laboratory. Specimens are often preserved for future studies and can range from a single organism or cell to a large collection of specimens. Specimens can be used for a wide range of purposes, such as in research studies, for educational purposes, and for medical diagnostics. Specimen collection and preservation techniques are essential for accurate and reliable results.In medicine, specimens are used to diagnose and treat disease. Doctors may take samples of blood, urine, or tissue from patients to analyze for the presence of bacteria, viruses, and other pathogens.

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Answer:

The answer is . A 46.2g

Answer:

I would say tunnel vision cause your only using one eye and if your looking through a tiny space your vision gets blury

Explanation:

The average power developed by the boy during the climb is approximately 29.4 W.

In physics, the amount of energy transferred or converted per unit time is called power.

total height = number of steps x height of each step

total height = 30 x 0.15 m = 4.5 m

Given, time = 60 s

As power = work done / time

work done = force x distance

force = mass x gravity

mass is boy's mass (40 kg) and gravity is acceleration due to gravity (9.81 m/s²).

force = 40 kg x 9.81 m/s² = 392.4 N

The distance that the boy moves is equal to the total height that he has climbed: distance = total height = 4.5 m

work done = force x distance

work done = 392.4 N x 4.5 m = 1765.8 J

power = work done / time

power = 1765.8 J / 60 s

power ≈ 29.4 W

Therefore, the average power developed by the boy during the climb is approximately 29.4 W.

As for the anomalous behavior of water, water has a higher boiling point and melting point as compared to other substances with similar molecular weight. This is due to the strong hydrogen bonding between water molecules, which requires more energy to break the bonds and change the state of water from solid to liquid to gas.

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The horizontal distance travelled by the football is 3.1 m.

The angle of projection of the football is calculated as follows;

tan ( θ ) = Vy / Vx

where;

tan ( θ ) = 5 / 3

tan ( θ ) = 1.667

θ = arc tan (1.667)

θ = 59⁰

The resultant velocity of the ball is calculated as follows;

v = √ (Vx² + Vy²)

v = √ (3² + 5²)

v = 5.83 m/s

The horizontal distance travelled by the football is calculated as follows;

x = v² sin(2θ) /g

where;

x = [ (5.83)² sin(2 x 59) /9.8 ]

x = 3.1 m

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An increase of 20 dB represents a tenfold increase in sound intensity, so if the sound intensity increases from 20 dB to 40 dB, then the sound pressure has increased by a factor of 10.

What is the factor by which sound pressure increases when sound intensity goes from 20 dB to 40 dB?

Sound intensity is measured in decibels (dB), and It is a logarithmic scale. A 20 dB increase represents a tenfold increase in sound intensity, while a 10 dB increase represents a doubling of the sound intensity. So if the sound intensity increases from 20 dB to 40 dB, it means that the intensity has increased by 20 dB, which corresponds to a tenfold increase in intensity.

This means that the sound pressure, which is proportional to the square root of the sound intensity, has also increased by a factor of √10, which is approximately 3.16. Therefore, the sound pressure has increased by a factor of about three times as a result of the 20 dB increase in sound intensity.

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Answer:

1. the pencil would have the momentum and would keep going until it hits the windshield. 2. when the car suddenly accelerates, the pencil would be inert and it would move toward the back of the car until a constant speed from the car is reached.

Answer:

The helium molecules move closer together when it's cold causing the balloon to deflate

Explanation:

The possible reason behind it is: the temperature of outside was low, so the Helium gas inside the balloon compressed and  it was partially deflated at the car. When she returned to the house, temperature of the gas of the balloon rises again and  it was fully inflated again.

The experimental gas law known as Charles' law, commonly referred to as the law of volumes, illustrates how gases tend to expand when heated. Charles's law can now be expressed as follows:

The Kelvin temperature and the volume will be directly proportional when the pressure on a sample of a dry gas is kept constant.

This direct proportional relationship can be expressed as follows:

V∝T.

Hence, as the temperature is low outside the house, the balloon was partially deflated at the car and the temperature rises again when it was inside the house, so  it was fully inflated again inside the house.

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The dryness fraction is 0.96. Using steam tables the enthalpies at points 2, 3, and 4 can be calculated as 2936.4 kJ/kg, 2892.3 kJ/kg, and 1039.2 kJ/kg, respectively. The value of q is found to be 1438.3 kJ/kg.

a) 0.2, b) 2687 kJ/kg, c) 0.16 kJ/kg.K, d) 32%, e) 2549.52 kJ/kgPart (a): The steam is superheated at 300°C and 3 MPa, using steam tables it can be seen that the dryness fraction is 0.96.Part (b): This can be calculated using the formula shown below. The net work done by the turbine is given as follows: Net work = m (h1 - h2) + m (h3 - h4) Where m is the mass of the steam entering the turbine and h1, h2, h3, and h4 are the enthalpies at the different points in the cycle.h1 is given as 3478 kJ/kg, and using steam tables the enthalpies at points 2, 3, and 4 can be calculated as 2936.4 kJ/kg, 2892.3 kJ/kg, and 1039.2 kJ/kg, respectively.

Substituting the values in the formula gives the answer as 2687 kJ/kg.Part (c): Heat transfer per unit mass of steam to the boiler can be calculated using the formula shown below:q = h1 - h4 The value of q is found to be 1438.3 kJ/kg. Part (d): The thermal efficiency of the cycle can be calculated using the formula shown below: Efficiency = Net work output/ Heat inputHeat input can be calculated as follows: Heat input = m (h1 - h4) + m (h3 - h2) The value of heat input is calculated to be 4485.4 kJ/kg Substituting the values in the formula gives the answer as 32%.Part (e): The heat transfer to cooling water passing through the condenser is given as follows:q = m (h4 - h5)Where h4 is 1039.2 kJ/kg and h5 is 48.72 kJ/kg. The value of q is calculated to be 2549.52 kJ/kg.

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Answer:

  T = (99.78 ±0.05) ºC

Explanation:

This problem refers to the procedure to perform the measurements and their correct reporting.

Suppose that the thermometer used has an appreciation of 0.1ºC and the values ​​of 5 measurements resulted in

 #     T (ºC)

 1      99.8

 2     99.7

 3     99.7

 4     99.8

 5     99.9

the processing calculate mean value

   T_average = ∑ \(T_{i}\) / n

   T_average = (99.8 + 99.7 + 99.7 + 99.8 + 99.9) / 5

   T_average = 99.78ºC

the absolute error or uncertainty of the measurement is half the appreciation of the instrument

       ΔT = ± 0.05ºC

so the result must be written

        T = (99.78 ±0.05) ºC

Answer:Because it likes to repel and attract opposites

The XC of the capacitor is 75.79 Ω. The XC of a 35 mF capacitor connected to a 60 Hz, 120 V supply is approximately 75.79 Ω

The capacitive reactance (XC) of a capacitor is given by the following formula:

XC = 1 / (2πfC)

where f is the frequency of the AC voltage source in Hz, and C is the capacitance of the capacitor in Farads.

Given that the capacitor has a capacitance of 35 mF (35 x 10^-6 F), and is connected to a 60 Hz, 120 V supply, the XC can be calculated as:

XC = 1 / (2π x 60 x 35 x 10^-6)

= 75.79 Ω (approximately)

Therefore, the XC of the capacitor is 75.79 Ω.

In conclusion, the XC of a 35 mF capacitor connected to a 60 Hz, 120 V supply is approximately 75.79 Ω. The capacitive reactance is inversely proportional to the frequency of the AC voltage source and directly proportional to the capacitance of the capacitor. This means that a higher frequency or larger capacitance will result in a smaller capacitive reactance, while a lower frequency or smaller capacitance will result in a larger capacitive reactance. Understanding the capacitive reactance of a capacitor is important in the design and analysis of electronic circuits, as it can affect the behavior of the circuit and the flow of current.

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Answer:

the capacity to do work is called energy

Assuming that the man is standing still on a flat, horizontal surface and neglecting air resistance, the normal force produced by the ground upwards on the leg would be equal in magnitude to the weight of the man, which is given as approximately 84 kg.

Therefore, the normal force being produced by the ground upwards on the leg would be approximately 84 kg multiplied by the acceleration due to gravity (9.81 m/s^2), which gives a value of approximately 823.44 N (Newtons).

So the normal force being produced by the ground upwards on the leg is approximately 823.44 N.

The conversion of 17 degrees The conversion of 17 degrees Celsius to Fahrenheit is 62.6 degrees Fahrenheit.

The equation F = 9/5C + 32 relates temperature measured in degrees Celsius (C) to degrees Fahrenheit (F). The formula is used to convert temperatures from Celsius to Fahrenheit , and vice versa. To use the formula, you simply plug in the known temperature in Celsius (or Fahrenheit), and then solve for the unknown temperature in Fahrenheit (or Celsius).

To convert Celsius to Fahrenheit, you would use the formula F = 9/5C + 32, where C is the temperature in Celsius and F is the temperature in Fahrenheit. Thus, for 17 degrees Celsius, the formula would be F = 9/5(17) + 32 = 62.6 F.

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bullet points are for week people got to have more heart

Answer:

14 degrees

Explanation:

because you can divide all and find the angle to find the answer

hope it's help ty make me brainless pls