a satellite is in a circular orbit about the earth at a distance 5.7 times the earth's radius above the surface. what is the speed of the satellite?

Answer:

The lifting force of a balloon is equal to the weight of the air it displaces, minus the weight of the balloon itself and any cargo it is carrying. We can calculate the lifting force using the following formula:

Lifting force = (4/3) x π x r^3 x ρair x g - m_balloon - m_cargo

where:

- r is the radius of the balloon (in meters)

- ρair is the density of air (in kg/m^3), which we'll assume is 1.2 kg/m^3 at sea level and standard temperature

- g is the acceleration due to gravity (in m/s^2), which we'll assume is 9.81 m/s^2

- m_balloon is the mass of the balloon (in kg)

- m_cargo is the mass of the cargo (in kg)

- π is pi (approximately 3.14)

Substituting in the values given in the problem, we get:

Lifting force = (4/3) x π x (7.15 m)^3 x (1.2 kg/m^3) x 9.81 m/s^2 - 930 kg - m_cargo

Simplifying and solving for m_cargo, we get:

m_cargo = (4/3) x π x (7.15 m)^3 x (1.2 kg/m^3) x 9.81 m/s^2 - 930 kg - Lifting force

Plugging in the lifting force we want the balloon to have, which we'll call L, we get:

m_cargo = (4/3) x π x (7.15 m)^3 x (1.2 kg/m^3) x 9.81 m/s^2 - 930 kg - L

Assuming we want the balloon to lift 5000 kg of cargo, we can solve for L:

L = (4/3) x π x (7.15 m)^3 x (1.2 kg/m^3) x 9.81 m/s^2 - 930 kg - 5000 kg

L = 281,581 N

Therefore, to lift 5000 kg of cargo, the balloon needs to have a lifting force of approximately 281,581 N.

Answer:

31.29

Explanation:

m/s(sqaured)

Answer:

Circuit

Explanation:

because a roughly circular line, route, or movement that starts and finishes at the same place.

This question can be solved by using the concepts of electrical energy, electricity, circuit, and electric current.

The flow of electricity from one place to another is called "Electrical Energy".

The electric current or electricity is defined as the rate of flow of electric charges from one point to another point, along a path known as a circuit. Electrical energy is caused by the movement of electric charges or the electric current from one point to another point of the circuit.

Therefore, this flow of electricity or electric current from one place to another place is termed Electrical Energy.

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The attached picture shows examples of electrical energy.

The distance di from the mirror where the image of the candle will form now is 40/3 cm.

The distance of the image of a candle placed at a distance from the mirror can be calculated using the mirror formula. The formula for a concave mirror is given by:

1/f = 1/v + 1/u,

where, f is the focal length of the mirror

u is the distance of the object from the mirror

di is the distance of the image from the mirror

In this problem, the object is the candle and it is placed at a distance do from the mirror. The image will be formed at a distance di from the mirror. Since the candle is still at a distance do from the mirror, the distance of the object u remains the same.

Using the mirror formula and substituting the given values, we get:

1/f = 1/v + 1/u

Where, f = -20 cm (negative because it is a concave mirror)

u = do = 40 cm (same as part b)

We need to find di.

Substituting the values in the mirror formula, we get:

1/-20 = 1/di + 1/40

Solving for di, we get:

di = 40/3 cm

Therefore, the distance di from the mirror where the image of the candle will form now is 40/3 cm.

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It should be noted that Rust and sodium nitrite were been produced during the reaction between the iron pipes and the fertilizer.

Chemical reaction can be regarded as a process involving conversation of one or more substances, known as reactants, are converted to different substances known as products.

When iron pipes and the fertilizer which are reactants react together, then products of Rust and sodium nitrite is formed.

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A block of mass m oscillates on a With a period of T = 2.0 s, a block of mass m oscillates on a horizontal spring. The new period will be (D) 2.8 s if a second identical block is adhered on top of the first block.

When a second identical block is glued to the top of the first block, the new period of the oscillation will be affected. The period of an oscillating mass-spring system depends on the mass and the spring constant.

In this case, by adding the second block, the total mass of the system becomes 2m (since both blocks are identical). The spring constant, however, remains the same since the same spring is used.

The period of oscillation (T) is inversely proportional to the square root of the total mass (\(m_{\text{total}}\)) according to the formula \(T = 2\pi\sqrt{\frac{m_{\text{total}}}{k}}\), where k is the spring constant.

Therefore, the new period (\(T_{\text{new}}\)) can be calculated as follows:

\(T_{\text{new}} = 2\pi\sqrt{\frac{{2m}}{{k}}} = \sqrt{2} \cdot (2\pi\sqrt{\frac{{m}}{{k}}})\)

As we can see, the new period is √2 times the original period. Therefore, the new period will be:

\(T_{\text{new}}\) = √2 * T = √2 * 2.0 s ≈ 2.8 s

Therefore, the answer is D. 2.8 s.

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Answer:

gas

Explanation:

Solids are compact together, liquida arent compact but are still close, and gases are free roaming and may be very far apart from eachother.

Answer:

The Answer is Gas.

Explanation:

When a voltage source such as a battery is connected to a ground point, it creates a potential difference between the two points, allowing current to flow through the circuit.

The known reference point in an electrical circuit is called a ground. A ground is a point in the circuit that serves as a reference point for voltage measurements and current flow. It is defined as the point of zero electrical potential. A ground is typically connected to the earth, which serves as a massive reservoir of charges, and the circuit is grounded using a ground wire.

The reference ground is critical since it serves as a point of reference against which voltage and current measurements can be made. When a voltage source such as a battery is connected to a ground point, it creates a potential difference between the two points, allowing current to flow through the circuit.

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Answer:

The rate at which work is done would be power. Bonus: The SI unit of work is Joules.

Explanation:

Hope this helped, nya~ :3

According to the given statement Therefore, as the wavelength of a wave decreased, its frequency increased.

The colour of light is defined by its wavelength, and the frequency of sound is controlled by its wavelength. The visual spectrum of light has wavelengths between about 700 nm (red) to 400 nm (violet). The span of acoustic signal frequencies is roughly 17 mm to 17 m.

By measuring the distance between any two identical locations on adjacent waves, the wavelength can always be found. When determining the wavelength of a longitudinal wave, the distance from one compression to the next or from one rarefaction to the next is measured.

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Answer:

Approximately \(0.48\; \rm m\cdot s^{-1}\).

Explanation:

Momentum would be conserved since there's no friction on this friend, and all other forces on her are balanced. Therefore:

\(\begin{aligned}& \text{Resultant momentum of (friend and pumpkin)} \\ =\; & \text{Initial momentum of (friend)} \\ & + \text{Initial momentum of (pumpkin)}\end{aligned}\).

Momentum \(p\) the product of mass \(m\) and velocity \(v\). That is: \(p = m \, v\).

The initial momentum of this friend is \(0\; \rm kg \cdot m \cdot s^{-1}\) since she was initially not moving (an initial velocity of \(0\; \rm m\cdot s^{-1}\).)

The initial momentum of the pumpkin would be:

\(\begin{aligned}p &= m \, v \\ &= 3.6 \; \rm kg \times 9.5\; \rm m\cdot s^{-1} \\ &= 34.2\; \rm kg \cdot m \cdot s^{-1}\end{aligned}\).

Therefore:

\(\begin{aligned}& \text{Resultant momentum of (friend and pumpkin)} \\ =\; & \text{Initial momentum of (friend)} \\ & + \text{Initial momentum of (pumpkin)} \\ =\; &0\; {\rm kg \cdot m \cdot s^{-1}} + 34.2\; {\rm kg \cdot m \cdot s^{-1}} \\ =\; & 34.2\; {\rm kg \cdot m \cdot s^{-1}}\end{aligned}\).

Rearrange the equation \(p = m \, v\) to find an expression for velocity \(v\) given momentum and mass:

\(\displaystyle v = \frac{p}{m}\).

Note that the "final momentum of friend and pumpkin" in the previous equation refers to the resultant velocity of the friend with the pumpkin in her hand. Thus, it would necessary to use the combined mass of the friend and the pumpkin \((68\; {\rm kg} + 3.6 \; {\rm kg})\) when calculating the resultant velocity:

\(\begin{aligned}& \text{Resultant velocity of (friend and pumpkin)} \\ =\; & \frac{\text{Resultant momentum of (friend and pumpkin)}}{\text{Mass of (friend and pumpkin)}} \\ =\; & \frac{34.2\; {\rm kg \cdot m \cdot s^{-1}}}{68\; {\rm kg} + 3.6\; {\rm kg}} \\ \approx \; & 0.48\; \rm m \cdot s^{-1}\end{aligned}\).

The gravitational force of attraction between them is 3.56 * 10⁻⁴ N

F = G*M1M2/d²,

where G = 6.67 * 10⁻¹¹ Nm²Kg⁻²,

M1 = 8000Kg and M2 = 1500 Kg,

F =  6.67 * 10⁻¹¹ * 8000 * 1500 / (1.5)² F = 3.56 * 10⁻⁴ N

The gravitational force of attraction between them is 3.56 * 10⁻⁴ N.

The universal gravitational law of Newton. According to this law, every body in the universe is attracted to every other body with a force that is inversely proportional to the square of the distance between them and proportional to the product of their masses.

Therefore, The gravitational force of attraction between them is 3.56 * 10⁻⁴ N.

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As we know that there are two types of planets in our solar system, the terrestrial and jovian planets. Terrestrial planets are the planets that are made up of rock or metal and are much denser and smaller than the jovian planets.

The jovian planets are the planets that are made up of gases and are much larger and less dense than the terrestrial planets. Now let's talk about the number of moons each planet has. Each of the six terrestrial planets has at least five moons, while the jovian planets have no moons at all.

The planets of the solar system have been classified into two categories. The first type of planets is the terrestrial planets, also known as rocky planets, and the second type is the jovian planets, also known as gas giants. The terrestrial planets are smaller, denser, and composed mostly of rock and metal. On the other hand, the jovian planets are larger, less dense, and mostly composed of gases such as hydrogen and helium. As per the given question, a solar system has six terrestrial planets and four jovian planets.

Each of the six terrestrial planets has at least five moons, while the jovian planets have no moons at all.This implies that the terrestrial planets are much more likely to have moons than the jovian planets. It is because the gravitational pull of a planet depends on its size and mass. A smaller planet will have less gravitational pull, which means it can easily capture and hold onto a moon in its orbit. In contrast, a larger planet will have a stronger gravitational pull, which can cause it to lose moons or not capture any at all. Therefore, the terrestrial planets can hold onto moons better than the jovian planets.

The number of moons a planet can have depends on its size, mass, and gravitational pull. The terrestrial planets in our solar system have a higher likelihood of having moons because they are smaller, denser, and have less gravitational pull than the jovian planets. The jovian planets have no moons at all because they are larger, less dense, and have a stronger gravitational pull that can cause them to lose moons.

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the answer is EQUAL because a force on another object the second force is equal

Minerals are any chemical substance which forms naturally in the Earth

Define mineral.

Minerals are those substances found in foods and in the earth that our systems require for healthy growth and development. Calcium, phosphate, potassium, sodium, chloride, magnesium, iron, zinc, iodine, chromium, copper, fluoride, molybdenum, manganese, and selenium are among the nutrients that are crucial for good health.

Compounds found only in living creatures are typically not considered minerals according to geological definitions. However, some minerals, like calcite, are frequently biogenic or, in terms of chemistry, are organic molecules (such as mellite). Additionally, living things frequently produce inorganic crystals (like hydroxylapatite), which are also found in rocks.

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Answer:

In most plants, the leaves are the main food factories. They capture the sun's energy with the help of chlorophyll in the leaf cells. The chlorophyll traps and packages the energy from the light of the sun in a process called photosynthesis. Leaves usually have a large surface so they can collect the most sunlight.

Explanation:

Hope this helps...maybe

Answer:

C

Explanation:

1).  Wind more turns of wire in the coil around the core.

2).  Increase the electrical current flowing in the wire.

(You can do that by using a battery or power supply with a little more voltage.)

3).  If the core of the electromagnet is anything else but pure iron,

take it out, throw it away, and replace it with a core of pure iron.

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Answer:

the answer is 483.75 I believe

The ratio of the kinetic energy to gravitational potential energy at height h is 1:1 or simply 1. The correct option is D, which is 16/16 or 1.

The gravitational potential energy of an object at a height h above the surface of the Moon is given by mgh, where m is the mass of the object, g is the acceleration due to gravity on the Moon (which is approximately 1.6 m/s²), and h is the height above the surface. As the object falls, its potential energy is converted into kinetic energy, given by the formula KE = 1/2mv², where v is the velocity of the object.

Since the object starts from rest, its initial kinetic energy is zero. As it falls, its potential energy decreases, and its kinetic energy increases. When the object has fallen to a height h above the surface, we can use conservation of energy to find its kinetic energy at that point. That is, the total energy of the object (kinetic plus potential) remains constant throughout its fall.

Thus, at height h, the gravitational potential energy of the object is mgh, and its kinetic energy is KE = 1/2mv², where v = √(2gh). Substituting the given values, we get KE = 1/2m(2gh) = mgh. Therefore, the ratio of the kinetic energy to gravitational potential energy at height h is 1:1 or simply 1. Thus, the correct option is D, which is 16/16 or 1.

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The kinetic energy of the object at a certain height above the surface of the Moon is equal to the gravitational potential energy at that height.

The kinetic energy of the object when it has fallen to a height h above the surface of the Moon can be calculated using the formula KE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height above the surface. Since the Moon has no atmosphere and there is no air friction, the potential energy is completely transformed into kinetic energy as the object hits the Moon's surface. Therefore, the kinetic energy at height h is equal to the gravitational potential energy at height h.

So, the correct answer would be A. 4

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Answer:

The Artemis program is a U.S. government-funded international human spaceflight program that has the goal of landing the first woman and the next man on the Moon, specifically at the lunar south pole region, by 2024.

Follow me please

Mark brainliest

Answer:

Hubble's Discovery

cosmic microwave background radiation

Answer:

Three main pieces of evidence for the Big Bang theory are the red-shift of light, cosmic background radiation and types of elements.  

Explanation:

Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.

Answer:

The answer is "\(5 \ \frac{m}{s} \ west\)"

Explanation:

\(\to \vec{V_1} = (25 \frac{m}{s}) (\hat{-i})\\\\\to \vec{V_2} = (20 \frac{m}{s}) (\hat{-i})\\\\\)

velocity of car | respect to car :

\(\to \vec{V_{12}} = \vec{V_1} - \vec{V_2}\\\\\)

          \(=\vec{-25} \hat{i}+ \vec{20} \hat{i}\\\\= 5 \ \frac{m}{s} \ west\)

Answer:

70 m/s east

Explanation:

When a charged particle moves through a magnetic field, it experiences a magnetic force that is always perpendicular to both the velocity of the particle and the magnetic field. To determine the direction of the magnetic field that is causing the force, we can use the right-hand rule.

The right-hand rule states that if you point your right thumb in the direction of the velocity of the charged particle and your fingers in the direction of the magnetic field, then the direction of the magnetic force will be perpendicular to both your thumb and your fingers.

So, to find the direction of the magnetic field causing the force acting on a negative charge, we need to first determine the direction of the force. Since the force is always perpendicular to the velocity and the magnetic field, we can use the right-hand rule to find its direction. Once we know the direction of the force.

Hence, the direction of the magnetic field is always opposite to the direction of the force to determine the direction of the magnetic field.

In summary, to determine the direction of the magnetic field causing the force acting on a charged particle, we need to use the right-hand rule to determine the direction of the force, and then remember that the direction of the magnetic field is always opposite to the direction of the force.

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The Foundation's namesake, Dr. Martha Ripley, was an ardent supporter of expert medical treatment for both married and unmarried mothers and their newborns.

Since its founding in 1957, Ripley's grantmaking has focused on the welfare of women and children. Dr. Ripley was instrumental in starting the Minneapolis Maternity Hospital in 1886 and stayed involved in its issues until her death in 1912.

The facility, which was subsequently given the name Ripley Memorial Hospital, was the first in the city to establish a social services department, provide lessons on parenting and natural delivery, and allow young children to "room in" with their mothers.

The hospital's board decided to form the Ripley Memorial Foundation and donate the proceeds from the sale when it closed in 1956.

Therefore, The Foundation's namesake, Dr. Martha Ripley, was an ardent supporter of expert medical treatment for both married and unmarried mothers and their newborns.

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Answer:

The true statement about the maximum speed of each car will be that the power of each car directly proportional to the speed of each car.

Explanation:

Given that,

Power of first car = 100 watt

Power of second car = 150 watt

Power of third car = 200 watt

We know that,

Power :

The power is directly proportional to the cube of speed.

In mathematically,

\(P\propto v^3\)

Where, P = power

v = speed

If the power is increased then the speed will be increase.

We need to find the maximum speed of car

According to question,

The power of car is maximum so the speed of car will be maximum.

For first car,

The power of first car is 100 watt.

So, the speed of first car will be 1000000 m/s.

For second car,

The power of second car is 150 watt.

So, the speed of second car will be 3375000 m/s.

For third car,

The power of third car is 200 watt.

So, the speed of first car will be 8000000 m/s.

Hence, The true statement about the maximum speed of each car will be that the power of each car directly proportional to the cube of speed of each car.

Where the first reflected pulse hits the second advancing pulse, the deflection is doubled.

A pulse in which all of the particles it disturbs move perpendicularly (at a right angle) to the pulse's direction of motion. The vibrational motion of the particles or layers of the medium in a longitudinal wave is parallel to the direction of the disturbance's propagation. When a slinky that is tied at one end sends two successive transverse pulses, one caused by a brief displacement to the right and the other by a brief displacement to the left. The deflection doubles (in comparison to that of a single pulse) when the first reflected pulse meets the second advancing pulse.

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The magnitude (the number of meters per second), of the resultant velocity of the rock is 23 m/s.

15 m/s + 8 m/s = 23 m/s.

The magnitude (the number of meters per second), of the resultant velocity of the rock is 23 m/s.

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