Answers
The mass of the spacecraft is independent of the change of the distance from earth, therefore the mass is the same.
\(m_{spacecraft} = 2 \times {10}^{4} kg \)
Related Questions
An astronaut weights 8x10^2
Answers
Answer:
800
Explanation:
10^2 = 100
8 x 100 = 800
Draw a diagram to show F1, the component parallel to the x axis, and F2, thecomponent parallel to the y axis, of each of the following forces, and find eachcomponent, giving each answer in terms of a trigonometric function.
Answers
To find:
The x and y components of the given forces.
Explanation:
a)
Given:
The magnitude of the force, F=80 N
The direction of the force, θ=32°
The x-component of the force is given by,
\(F_1=F\cos\theta\)On substituting the known values,
\(F_1=80\cos32\degree\)The y-component of the force is given by,
\(F_2=F\sin\theta\)On substituting the known values,
\(F_2=80\sin32\degree\)Diagram:
b)
Given:
The magnitude of the force, F=7 N
The direction of the force, θ=29°
The x-component of the force is given by,
\(F_1=F\sin\theta\)On substituting the known values,
\(F_1=7\sin29\degree\)The y-component of the force is given by,
\(F_2=F\cos\theta\)On substituting the known values,
\(F_2=7\cos29\degree\)Diagram:
Type of law that applies to an action that took place before the law was passed
Answers
Answer:
Black's Law Dictionary defines a retroactive law as a law “that looks backward or contemplates the past, affecting acts or facts that existed before the act came into effect.” While Congress often considers legislation that would apply retroactively, the Constitution imposes some limited constraints on such laws.
clarity the term fair discrimination
Answers
Answer:
The discrimination which is based on affirmative action, inherent requirement of a particular job, productivity and compulsory discrimination by law are termed as fair discrimination.
hope it helps :)
Explanation:
Calculate the ratio of H+ ions to OH– ions at a pH = 8. Find the concentration of H+ ions to OH– ions listed in Table B of your Student Guide. Then divide the H+ concentration by the OH– concentration. Record this calculated ratio in Table A of your Student Guide. Compare your approximated and calculated ratios of H+ ions to OH– ions at a pH = 8. Are they the same? Why or why not? Record your explanation in Table A. What is the concentration of H+ ions at a pH = 8? mol/L What is the concentration of OH– ions at a pH = 8? mol/L What is the ratio of H+ ions to OH– ions at a pH = 8? :1 OR 1:
Answers
At pH = 8, the ratio of H+ ions to OH- ions is 1:1, indicating a neutral solution. The concentration of H+ ions and OH- ions is approximately 1 x 10^(-8) mol/L. The calculated and approximated ratios should match.
To calculate the ratio of H+ ions to OH- ions at pH = 8, we need to use the relationship between pH and the concentration of H+ ions. The pH scale is a logarithmic scale that measures the acidity or alkalinity of a solution based on the concentration of H+ ions.
The formula to calculate the concentration of H+ ions (\(C_H\)+) from pH is:
\(C_H\)+ = \(10^(^-^p^H^)\)
Substituting pH = 8 into the formula:
\(C_H\)+ = \(10^(^-^8^))\)
Using the properties of logarithms, we can calculate the concentration of H+ ions:
\(C_H\)+ ≈ 1 x \(10^(^-^8^))\) mol/L
According to the concept of neutrality in water, the concentration of H+ ions is equal to the concentration of OH- ions. Therefore, the concentration of OH- ions (\(C_O_H\)-) is also approximately 1 x \(10^(^-^8^))\)mol/L.
To calculate the ratio of H+ ions to OH- ions, we divide the concentration of H+ ions by the concentration of OH- ions:
Ratio = \(C_H\)+ / \(C_O_H\)-
Ratio = (1 x \(10^(^-^8^))\) / (1 x \(10^(^-^8^))\))
Ratio = 1:1
The ratio of H+ ions to OH- ions at pH = 8 is 1:1, indicating a neutral solution. This means that the concentration of H+ ions is equal to the concentration of OH- ions, resulting in a balanced ratio.
When comparing the calculated ratio of 1:1 to the approximated ratio at pH = 8, they should be the same because the ratio of H+ ions to OH- ions is determined solely by the pH value, which is consistent and mathematically derived. Therefore, the approximated and calculated ratios should match.
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the 3.4 kg, uniform, horizontal rod in (figure 1) is seen from the side. what is the gravitational torque about the point shown?
Answers
The gravitational torque of the rod is 8.33N.m
According to the question,
the mass of the rod (m) is 3.4kg.
Force times distance equals torque.
Since the bar is uniform, you can imagine that the mass is evenly distributed 50 cm from either end at the centre.
Therefore, the torque at the 25-cm-diameter point would be defined as follows:
Where m is the object's mass, 3.4 kg, and g is the gravitational force, the equation for force equals mass times acceleration divided by mass.
g = 9.8m/s
The distance is expressed in meters.
Torque is determined by the product of force and distance.
Torque equals m (9. 8) x (0.25)
where
m is the mass
g is the gravitational force
h is the height
Torque = 3. 4 x (9. 8) x (0.25)
=> 33.2 x 0.25
=> 8.33N.m
The gravitational torque of the rod is 8.33N.m since torque = 8.33N.m.
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Note the correct question is in the diagram,
voltage is 50v and capacitance is 30c what is the charge
Answers
Explanation:
voltage is 50v and capacitance is 30c what is the charge
q=1500c
given that the moon subtends at an angle of about half a degree in the sky, estimate its distance from earth
Answers
Distance of moon from the earth will be around 384,400 Kilometers (239,000 miles) .
Elaborate in detail.The angular size of the Moon in the sky, which is around half a degree, can be used to determine the distance to the Moon. With this knowledge and knowledge that the Moon's diameter is approximately 3,476 kilometers, we can apply the following formula to determine the angular size: Distance equals (Angular size / 2) tan((Moon diameter / 2)). This gives us a measurement of 384,400 kilometers (239,000 miles) as the distance between Earth and the Moon.
It's crucial to keep in mind that this is only an estimate, and the distance could change based on where the Moon is in its orbit around the Earth. It's also important to note that this distance is an average and that it varies over the month as a result of the Moon's eccentric orbit.
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Explain newton's second law in terms of momentum
Answers
In terms of momentum, we can define momentum as the product of an object's mass and velocity. Mathematically, this can be expressed as p = mv, where p is the momentum, m is the mass, and v is the velocity.
Using this definition of momentum, we can rewrite Newton's second law as F = dp/dt, where F is the force, p is the momentum, and t is time. This equation tells us that the force applied on an object is equal to the rate of change of its momentum over time.
In simpler terms, this means that the more force applied to an object, the greater the change in its momentum over time, and the more mass an object has, the more force is required to achieve the same change in momentum. Therefore, the second law of motion in terms of momentum tells us how a force applied to an object affects its motion and momentum.
Nowton's third law refers to 'action reaction forces*. These forces are
always:
Answers
equal in magnitude but opposite in direction
After a group of researchers conducts a new experiment that has never been conducted before, what is the best way for other scientists to make sure that the data is real?
Answers
Answer:
I think it would be interviewing the researchers I'm unsure though
Answer:
Probably C) Conducting the experiment again
Explanation:
Option A is wrong because there is a chance that the group of researchers made a mistake or got the wrong data. So when interviewing the researchers, there is a chance of them giving the wrong data, especially since the experiment has never been conducted before.
Option B is wrong because the experiment the researchers where doing was new and has never been conducted before. Therefore there is no older research done on that topic.
Option C is correct because when conducted the experiment again, they can compare their results with the group of researchers. Checking if the data is correct.
Option D is wrong because the group of researchers might have made a mistake when writing down the procedure, leading to false data.
8. If 2 objects are made of the same material, have the same number of atoms, and exist in the same physical state....
A)the one with the higher temperature has less thermal energy
B)the one with the lower temperature has less thermal energy
C)the one with the same temperature has less thermal energy
D)neither has less thermal energy
9. If four substances of identical molecules have the same number of molecules.......
A)the substance that is in a hard solid state has the highest thermal energy
B)the system that is in a soft solid state has the highest thermal energy
C)the system that is in a liquid state has the highest thermal energy
D)the system that is in a gas state has the highest thermal energy
WILL GIVE BRAINLIST IF RIGHT FOR BOTH !
Answers
Answer:
r eggy the class is the right answer any attachments may include confidential is also measure and quote the correct answer and remember question about my experience is also in every friendship a few weeks to see what the following Remember word for women winter andsorry this is a great week ahead of lesson plan and activities and I can not understand you may want you in weal a few months but why is there on MondayExplanation:
home improvement in parallel is not available at front and remember word for women men to get to see if required to have any attachments for viruses and malware because Mera sultan Ahmed please make from your message to be able the following information for women men to you soon with the correct address I will get to you trying notwhat happens to the average molecular speed in an ideal gas if you triple the volume and keep the same temperature ?
Answers
Answer:
If you hold the temperature of an ideal gas constant, what happens to its volume when you triple the pressure? For T fixed, P is proportional to 1/V or V is proportional to 1/P. Tripling P reduces V to 1/3. ... If T is constant, the speeds of the average speeds and kinetic energy of the atomic particles remain constant.
I hope this helps!
Question 1 of 10
When thermal conduction is occurring within a solid, what happens to its
particles?
A. They begin to move more slowly.
B. They move in the same direction.
C. They vibrate faster.
O O
D. They move past each other.
SUBMIT
Answer is C
Answers
When thermal conduction is occurring within a solid, the particles vibrate faster. (option C)
When thermal conduction occurs within a solid, the particles of the solid undergo certain changes. Here is a step-by-step explanation:
Thermal conduction:
Thermal conduction is the transfer of heat energy within a solid material due to the movement of its particles. It occurs when there is a temperature gradient within the solid, where one end is at a higher temperature and the other end is at a lower temperature.
Particle motion:
In a solid material, the particles are closely packed and held in a fixed position by intermolecular forces. However, when thermal energy is supplied to the solid, the particles gain kinetic energy and begin to vibrate.
Increased kinetic energy:
The transfer of heat energy causes the particles to gain kinetic energy, which results in increased vibrational motion. The particles oscillate around their equilibrium positions more vigorously.
Vibrational motion:
As the particles vibrate faster, their amplitude of vibration increases. This increased vibrational motion allows the particles to pass on their kinetic energy to neighboring particles through collisions.
Transfer of heat:
The faster vibration of particles enables the transfer of heat energy from higher temperature regions to lower temperature regions within the solid. The particles with higher kinetic energy collide with neighboring particles, transferring the thermal energy.
In summary, during thermal conduction within a solid, the particles do not move in the same direction, move past each other, or slow down. Instead, they vibrate faster around their equilibrium positions, enabling the transfer of heat energy through the solid material.
Therefore, the correct answer is C. They vibrate faster.
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Please help!!
Question in the picture
Answers
Set of equation which is true for the situation is
c) 2SA = SB and 2BA=BB
What is pressure?
Force applied perpendicular to the surface of an object per unit area is called pressure
SI unit of pressure is one newton per square meter (N/m2).
Given, length = 3 foot, width= 1 foot and height = 1 foot
1foot = 0.305m
Volume of tank A = 3*0.305*0.305*0.305
= 0.085
density of water= 1000kg/m^3
Pressure= 1000kg/m^3 *gravity * height
=1000kg/m^3 * 9.8 m/s^2* 0.305
=2989 N
Force exerted by water at bottom= P * A
= 2989*0.085
=254.065 Nm^2
similarly, for tank B
Given ,length = 6 foot, width =1 foot and height= 1foot
Volume of tank B = 6*0.305*0.305*0.305
=0.17
pressure= 1000kg/m^3 * 9.8m/s^2 * 0.305
= 2989 N
Force exerted by water at bottom = P*A
= 2989 * 0.17
=508.13 Nm^2
Hence proved that pressure exerted by tank B is twice that of tank A.
And same goes for pressure exerted on the side of the tank.
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Which theory explains why gravity between two objects changes when the distance between them changes?
Einstein's theory because he suggested that the more distance there is between objects, the more space-time
curves and the greater the strength of gravity is.
Einstein's theory because he suggested that the more distance there is between objects, the more space-time
curves and the weaker the strength of gravity is.
Newton's theory because he suggested that the greater the distance between objects, the greater the pull of gravity.
Newton's theory because he suggested that the greater the distance between objects, the weaker the pull of gravity.
Answers
Answer:
Newton's theory because he suggested that the greater the distance between objects, the weaker the pull of gravity.
Answer: The answer is Newton’s theory because he suggested that the greater the distance between objects, the weaker the pull of gravity
Explanation: Just took the test i hope this help you enjoy :D
what is the total time that the bullet is in contact with the board?
Answers
Answer:
an acceleration of the boy as it passes through the board and be the total time the boy is in contact with the board solution
who is the founder of oersted experiment ?
Answers
Answer:
In 1820, Hans Christian Oersted(the founder) developed the oersted experiment to display a relationship between magnetism and electricity.
Explanation:
Using the information from the movie champions what is one conclusion about the history of the sports
Answers
One of the conclusion about the history of sports that can be drawn from the movie "Champions" is that sports have a long and rich history that is intertwined with the history of human civilization.
What is Champions about?From the ancient Olympic Games to the modern-day Olympics, sports have been a way for people to come together and compete in a spirit of sportsmanship and competition. Sports have also been a way for people to express themselves, to build community, and to achieve personal goals.
The movie "Champions" tells the story of a group of young men who come together to form a football team. The team is made up of boys from different backgrounds and with different abilities. However, they are all united by their love of football and their desire to win.
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Can anyone help me with these question I’ll give brainliest
Answers
Answer:
Question 5: The period of the waves is the time it takes for one complete up-and-down cycle of the boat.
In this case, the boat bobs up and down 10 times in 8 seconds.
Therefore, the time it takes for one up-and-down cycle is:
8 seconds ÷ 10 cycles = 0.8 seconds
So the period of the waves is 0.8 seconds.
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Question 6 : The frequency of the waves is the number of complete up-and-down cycles per unit time, typically measured in Hertz (Hz).
In this case, the boat bobs up and down 10 times in 19 seconds.
Therefore, the frequency of the waves is:
Frequency = Number of cycles ÷ Time
Frequency = 10 cycles ÷ 19 seconds
Frequency ≈ 0.526 Hz
So the frequency of the waves is approximately 0.526 Hz.
what happends when you slowly pull out the paper while theirs a coin on top
Answers
Explain how slavery transformed from modern times through the transatlantic slave trade
Answers
Answer:
While the transatlantic slave trade mainly involved enslaving people from West Africa and forcing them to work on plantations in the Americas, modern slavery is more widespread in countries across the world, including the UK. The Atlantic slave trade contributed to the activity of many provision and redistribution markets, and enabled the creation of large fortunes that were invested in highly diverse activities and forms of consumption.
Explanation:
hope that helps
How much extra water does a 147-lb concrete canoe displace compared to an ultra lightweight 36-lb Kevlar canoe of the same size carrying the same load
Answers
Answer:
1.7791 ft^3
Explanation:
The computation of the extra water is as follows;
Here we use the following formula
Volume of the water = ÷ Weight of concrete canoe ÷ value of the weight of the specific water
= 147 lb ÷ 62.4 lb /ft^3
= 2.356 ft^3
Now the volume of water occupied in ultra lightweight
= 36 lb ÷ 62.4 lb /ft^3
= 0.5769 ft^3
Now the water volume displaced is
= 2.356 - 0.5769
= 1.7791 ft^3
PLEASE HELP IF U CAN
Answers
Answer:
what is the help you can tell
.An electron of charge 1.6 x 10-19is situated in a uniform electric filed strength of 120 vm-1 Calculate the force acting on it
Answers
The force acting on the electron is 1.92 x 10^-17 N.
The problem states that an electron of charge 1.6 x 10^-19 is located in a uniform electric field of 120 Vm^-1, and it asks us to determine the force acting on it.
We can use Coulomb's law, which states that the force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them. If the charges are of opposite signs, the force is attractive, while if the charges are of the same sign, the force is repulsive.
The formula for Coulomb's law is F = kq1q2/r^2, where F is the force between the charges, k is Coulomb's constant, q1 and q2 are the magnitudes of the charges, and r is the distance between them.
Since the electron has a charge of 1.6 x 10^-19 C, and the electric field strength is 120 Vm^-1, we can use the equation F = qE to find the force acting on it.
F = qE = (1.6 x 10^-19 C)(120 Vm^-1) = 1.92 x 10^-17 N.
Therefore, the force acting on the electron is 1.92 x 10^-17 N.
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You see a boat sitting at the end of a dock. Ten minutes later you see the same boat in a cove to the right of the dock. You did not see the boat move.
However, you know that the boat moved because its
relative to the dock changed.
Answers
The boat must have moved, despite not being seen to move, because its relative position to the dock has changed. This phenomenon is known as relative motion .
Everything is always in motion, but the way we perceive it depends on our frame of reference.
In this scenario, the dock was the frame of reference for the initial position of the boat. When the boat moved to the cove, its position relative to the dock changed, and the dock was no longer an appropriate frame of reference. The boat's motion is now relative to the cove instead.
It is important to note that relative motion depends on the chosen frame of reference. If we were to choose the boat as the frame of reference, then it would be the dock that appears to move, not the boat. This is because motion is always relative to a chosen frame of reference.
In conclusion, the boat must have moved because its position relative to the dock changed. The concept of relative motion reminds us that motion is always relative to a chosen frame of reference, and that the way we perceive motion depends on our chosen frame of reference.
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calculate the density of 1mole of oxygen ata pressure of 4×10^-4Nm^-2 and a temprature of 273.2°K
Answers
The density of 1 mole of oxygen at a pressure of 4×10⁻⁴ Nm⁻² and a temprature of 273.2 K is 2.82×10⁻⁶ g/m³
How to determine the density of oxygenWe'll begin by obtaining the volume of the oxygen. This can be obtained as follow:
Number of mole (n) = 1 molePressure (P) = 4×10⁻⁴ Nm⁻²Temperature (T) = 273.2 K Gas constant (R) = 8.314 m³Nm⁻²/KmolVolume = ?PV = nRT
Divide both sides by P
V = nRT / P
V = (1 × 8.314 × 273.2) / 4×10⁻⁴
V = 5678462 m³
Finally, we shall determine the density of the oxygen. This can be obtained as follow:
Mass of 1 mole of oxygen = 16 gVolume of 1 mole of oxygen = 5678462 m³Density of oxygen =?Density = mass / volume
Density of oxygen = 16 / 5678462
Density of oxygen = 2.82×10⁻⁶ g/m³
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The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.40 the weight of the object is 4.2
Answers
The frictional force of an object is the product of the normal force and coefficient of kinetic friction. Here the frictional force acting on the object is 16.4 N.
What is frictional force?
Frictional force is a kind of force acting on a body to resist it from motion. Thus, the direction of the force will be in negative with the magnitude. Frictional force is the product of coefficient of friction and the normal force.
The normal force acting on the object of mass 4.2 Kg is N = mg
N = 4.2 Kg × 9.8 m/s² = 41.16 N
Frictional force = ц N
= 0.40 × 41.16 N
= 16.4 N.
Therefore, the frictional force acting between the surface of the object and the floor is 16.4 N
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Your question is incomplete. But your complete question probably was:
The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.40 the weight of the object is 4.2 kg. What is the frictional force of the object?
6. How much heat energy is required to change a 0.3 kg ice cube from a solid at -20 °C to steam at 120 °℃ ?
Answers
The heat energy required to change a 0.3 kg ice cube from a solid at -20 °C to steam at 120 ℃ is 915.78 kJ.
The process of changing a 0.3 kg ice cube from solid at -20 ℃ to steam at 120 ℃ involves the following steps:
1. First, the ice cube must be warmed from -20 ℃ to 0 ℃.
The quantity of heat required can be calculated using the formula Q = mcΔT, where Q is the heat required, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.
Since the ice is at a constant temperature, ΔT is equal to 0.
Hence, no heat is required to change the temperature of the ice cube from -20 ℃ to 0 ℃.
2. Second, the ice cube must be melted at 0 ℃.
The heat required to melt the ice cube can be calculated using the formula Q = mL, where Q is the heat required, m is the mass of the substance, and L is the latent heat of fusion of the substance.
For water, the latent heat of fusion is 334 J/g.
Hence, the heat required to melt the 0.3 kg ice cube is 0.3 kg x 334 J/g = 100.2 kJ.
3. Third, the liquid water must be warmed from 0 ℃ to 100 ℃.
The quantity of heat required can be calculated using the formula Q = mcΔT, where Q is the heat required, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.
For water, the specific heat capacity is 4.184 J/g℃.
Hence, the heat required to warm the 0.3 kg of liquid water from 0 ℃ to 100 ℃ is 0.3 kg x 4.184 J/g℃ x 100 ℃ = 125.52 kJ.
4. Fourth, the liquid water must be boiled at 100 ℃ to form steam at 100 ℃.
The heat required to boil the liquid water can be calculated using the formula Q = mL, where Q is the heat required, m is the mass of the substance, and L is the latent heat of vaporization of the substance.
For water, the latent heat of vaporization is 2260 J/g.
Hence, the heat required to boil the 0.3 kg of liquid water is 0.3 kg x 2260 J/g = 678 kJ.
5. Fifth, the steam must be heated from 100 ℃ to 120 ℃.
The quantity of heat required can be calculated using the formula Q = mcΔT, where Q is the heat required, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.
For steam, the specific heat capacity is 2.010 J/g℃.
Hence, the heat required to heat the 0.3 kg of steam from 100 ℃ to 120 ℃ is 0.3 kg x 2.010 J/g℃ x 20 ℃ = 12.06 kJ.6.
The total heat required to change the 0.3 kg ice cube from solid at -20 ℃ to steam at 120 ℃ is the sum of the heat required for each step.
Hence, the total heat required is 100.2 kJ + 125.52 kJ + 678 kJ + 12.06 kJ = 915.78 kJ.
Therefore, the heat energy required to change a 0.3 kg ice cube from a solid at -20 °C to steam at 120 °℃ is 915.78 kJ.
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what is the effect of cigarette smoke in your family