a certain satellite travels in an approximately circular orbit of radius 3.0 × 106 m with a period of 6 h 44 min. calculate the mass of its planet from this information.

This question involves the concepts of centripetal force, range of projectile and projectile motion.

The magnitude of centripetal force is "2812.8 N".

First, we will find the velocity of the ball by using the formula of the range of the projectile.

\(R = \frac{v^2Sin2\theta}{g}\)

where,

R = range of projectile = 86.75 m

v = speed = ?

θ = launch angle = 47.9°

g = acceleration due to gravity = 9.81 m/s²

Therefore,

\(86.75\ m = \frac{(v)^2Sin(2)(47.9^o)}{9.81\ m/s^2}\\\\v = \sqrt{\frac{(86.75\ m)(9.81\ m/s^2)}{Sin95.8^o}}\)

v = 29.25 m/s

Now, we will use the formula to find out the centripetal force:

\(F_c = \frac{mv^2}{r}\)

where,

\(F_c\) = Centripetal Force = ?

m = mass of the ball = 7.3 kg

v = speed = 29.25 m/s

r = radius = 2.22 m

Therefore,

\(F_c = \frac{(7.3\ kg)(29.25\ m/s)^2}{2.22\ m}\)

Fc = 2812.8 N = 2.812 KN

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Answer:

the height of the potential energy is 3,200 J

Explanation:

The computation of the kinetic energy is shown below:

Kinetic energy = 1 ÷ 2 × mass × velocity^2

= 1 ÷ 2 × 4 kg × 40 m/s^2

= 3,200 J

Hence the height of the potential energy is 3,200 J

ANSWER

2304 mg

EXPLANATION

The rate is given in mg per minute. To find how much the brain's mass increases in one day we have to find how many minutes are in a day.

Assuming that a day has 24 hours and 1 hour has 60 minutes:

One day has 1440 minutes. Then, in one day the brain's mass increases:

The newborn baby's brain's mass increases 2304 mg in one day.

R = resistivity × (l/A), A = πr^2= πd^2/4

2 =( 4.9 × 10^ -4) * (l/π0.7^2/4)

make l the subject and calculate.

i assumed we are looking for the length if the wire.

Yes, the information that the sprinter's mass is 60.0 kg is needed to find the normal force and to determine the maximum acceleration.

To determine the maximum acceleration that the sprinter can achieve, we need to know the coefficient of static friction between the soles of her shoes and the track surface, as well as her weight (force of gravity acting on her).

The coefficient of static friction can be used to calculate the maximum force of friction (friction force = coefficient of static friction x normal force).

The normal force is equal to the weight of the object, which is given as 60.0 kg. So the normal force is : 60.0 kg x 9.8 m/s^2 = 588 N.

The maximum force of friction is: friction force = coefficient of static friction x normal force

= 0.754 x 588 N

= 445.5 N

The maximum acceleration can be determined by dividing the force acting on an object by its mass.

a = F / m

= 445.5 N / 60.0 kg

= 7.4 m/s^2

So the maximum acceleration the sprinter can achieve is 7.4 m/s^2

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Answer:

B. Km/s/hr

Explanation:

The force between q₁ and q₂ is -1.17 x 10⁻³ N, net force on q₁ is -14.40117 N, force between q₂ and q₃ is 1.09 x 10⁻³ N.

The given information suggests that there are two particles, q₁ and q₂. The force on q₁ due to q₂ is given by Coulomb's law:

F₂ = k(q₁q₂/r²)

Where, k = Coulomb's constant (k = 8.99 x 10⁹ Nm²/C²), q₁ and q₂ = charges of particles in Coulombs, and r = distance between the particles in meters.

The net force on q₁ is the vector sum of the forces on q₁ due to all other charges.

Given data:

Charge on q₁, q₁ = +13.0 μC = +13.0 x 10⁻⁶ C

Charge on q₂, q₂ = -5.90 μC = -5.90 x 10⁻⁶ C

Distance between q₁ and q₂, r = 0.30 m

Distance between q₁ and q₃, d = 0.55 m

Charge on q₃, q₃ = +7.70 μC = +7.70 x 10⁻⁶ C

Force between q₁ and q₃, F₁ = -14.4 N

Now, calculate the force between q₁ and q₂ as follows:

F₂ = k(q₁q₂/r²)

F₂ = (8.99 x 10⁹ Nm²/C²) [(+13.0 x 10⁻⁶ C) x (-5.90 x 10⁻⁶ C) / (0.30 m)²]

F₂ = -1.17 x 10⁻³ N

(The negative sign indicates that the force is attractive)

Therefore, the force between q₁ and q₂ is -1.17 x 10⁻³ N.

The net force on q₁ is given by the vector sum of the forces on q₁ due to q₂ and q₃:

Net force on q₁ = F₁ + F₂

Net force on q₁ = (-14.4 N) + (-1.17 x 10⁻³ N)

Net force on q₁ = -14.40117 N

Therefore, the net force on q₁ is -14.40117 N.

Finally, calculate the force between q₂ and q₃, which can be found using Coulomb's law as:

F₃ = k(q₂q₃/d²)

F₃ = (8.99 x 10⁹ Nm²/C²) [(-5.90 x 10⁻⁶ C) x (+7.70 x 10⁻⁶ C) / (0.55 m)²]

F₃ = 1.09 x 10⁻³ N

(The positive sign indicates that the force is repulsive)

Therefore, the force between q₂ and q₃ is 1.09 x 10⁻³ N.

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Answer: B

Explanation: it is perpendicular to a surface

Answer:

it is perpendicular to a surface

Explanation:

Answer:

The right answer is "18 m/s".

Explanation:

The given values are:

Velocity,

V = 6 m/s

Tension,

T = 9 N

As we know,

⇒  \(V=(\frac{T}{u})^{\frac{1}{2}}\)

On substituting the given values, we get

⇒  \(6=(\frac{9}{u} )^{\frac{1}{2}}\)

⇒  \(36=\frac{9}{u}\)

⇒  \(u=\frac{9}{36}\)

⇒     \(=\frac{1}{4}\)

Now,

For 81 N the velocity will be:

⇒  \(v=(\frac{81}{(\frac{1}{4} )} )^{\frac{1}{2} }\)

⇒     \(=18 \ m/s\)

Answer:

70 m.

Explanation:

Given,

Frequency, f = 20 HZ

speed of sound, v = 1400 m/s

wavelength of the waves = ?

we know,

v = f λ

Hence, the wavelength of the wave is equal to 70 m.

The temperature of water in a bathtub at time t can be modeled using a mathematical function that takes into account various factors.

These factors include the initial temperature of the water, the temperature of the surrounding environment, the rate at which heat is added or removed from the water, and the volume of the water in the tub. One common model used to represent the temperature of water in a bathtub is the heat transfer equation, which takes into account the heat transfer coefficient, the temperature difference between the water and the surroundings, and the surface area of the water. Other factors such as the type of insulation used on the tub can also affect the temperature of the water.
The temperature of water in a bathtub at time t can be modeled using the concept of Newton's Law of Cooling. This law states that the rate of change of temperature is proportional to the difference between the object's temperature and the surrounding environment's temperature. In this case, the object is the water in the bathtub and the environment is the air in the bathroom. The mathematical equation for this model is T(t) = Tₐ + (T₀ - Tₐ) * e^(-kt), where T(t) is the temperature at time t, T₀ is the initial temperature, Tₐ is the ambient temperature, k is a constant, and e is the base of natural logarithms.

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The atomic radius of copper is approximately 128 picometers (pm).

The atomic radius of an element is defined as half the distance between the nuclei of two identical adjacent atoms in a molecule. In the case of metallic copper, the copper atoms are arranged in a crystal lattice, and the distance between two adjacent copper atoms in the lattice is known as the interatomic distance or lattice parameter.

We are given that the distance between two adjacent copper atoms in metallic copper is 256 pm. Since this is the distance between the nuclei of two adjacent atoms, the sum of the atomic radii of the two copper atoms is equal to 256 pm.

Therefore, the atomic radius of copper can be calculated as follows:

Atomic radius of Cu = (interatomic distance between adjacent Cu atoms) / 2

Atomic radius of Cu = 256 pm / 2

Atomic radius of Cu = 128 pm

Hence, the atomic radius of copper is approximately 128 picometers (pm).

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Answer:

A. wind blows from the land toward the sea.

B. that this happens because the land cools faster than the sea, and, as a result, the air over land cools faster, which creates an area of higher pressure on land and lower pressure over the sea.

Explanation:

bc I am smrt

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Answer: B. Highly skilled workers are necessary to run the wind tunnel

Explanation:

A pex

The limitation of this model is highly skilled workers are necessary to run the wind tunnel.

The answer is option B.

Tunnels open to the environment also are laid low with winds and climate. high running prices. The fan must continually boost up the float through the tunnel. Noisy operation.

They gauge elevate, drag, shockwaves, and other conditions that have an effect on planes and other devices that velocity through the wind. in addition, those tunnels can help engineers parent out how wind interacts with desk-bound items, along with buildings and bridges, and locate methods to make them stronger and safer.

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Answer:

The final equilibrium temperature is approximately 26.69 °C

Explanation:

The heat transferred, ΔQ, from a hot body to a cold one is given by the following formula;

ΔQ = m·c·ΔT

Where;

m = The mass of the body

c = The specific heat capacity of the body

ΔT = The temperature change of the body

The given mass of the gold bar, m₁ = 20.0 kg

The initial temperature of the gold bar, T₁ = 35.0 °C

The specific heat capacity of gold, c₁ = 0.13 kJ/(kg·K)

The mass of the glass container, m₂ = 0.8 kg

The initial temperature of the glass container, T₂ = 15°C

The specific heat capacity of glass, c₂ = 0.792 kJ/(kg·K)

The mass of the added water, m₃ = 2.0 kg

The initial temperature of the added water, T₃ = 25°C

The specific heat capacity of water, c₃ = 4.2 kJ/(kg·K)

The heat lost by the gold = The heat gained by the glass and the water

Let 'T' represent the temperature at the final equilibrium, we have;

m₁·c₁·ΔT₁ = m₂·c₂·ΔT₂ + m₃·c₃·ΔT₃

Where;

ΔT₁ = T₁ - T

ΔT₂ = T - T₂

ΔT₃ = T - T₃

∴ 20.0 × 0.13 × (35 - T) = 0.8 × 0.792 × (T - 15) + 2.0 × 4.2 × (T - 25)

Expanding and collecting like terms (using a graphing calculator) gives;

91 - 2.6·T = 9.0336·T - 219.504

9.0336·T + 2.6·T = 219.504 + 91 = 310.504

11.6336·T = 310.504

T = 310.504/11.6336 ≈ 26.69

The final equilibrium temperature, T ≈ 26.69 °C.

Answer:

Explanation:

57.8 m/s

The required force need to accelerate the rocket is 120000N while the force need to balance the weight is 117600 N and the total force is 237,600 Newtons.

Force is defined as an object which is in a state of motion then its rate of change of moment is called force.

Here,
We can use the equations of motion to solve this problem.

First, we can find the acceleration of the rocket

a = (v - u) / t

where v is the final velocity, u is the initial velocity (which is 0 in this case), and t is the time taken.

a = (400 m/s - 0) / 40 s

a = 10 m/s²

Next, we can use Newton's second law, F = ma,

F = ma

F = 12,000 kg x 10 m/s²

F = 120,000 N

So the force needed to accelerate the rocket is 120,000 Newtons.

The weight of the rocket is given by,

weight = m x g

weight = 12,000 kg x 9.8 m/s²

weight = 117,600 N

To balance the weight, a force of 117,600 N must be exerted on the rocket in the opposite direction.

total force = force to accelerate + force to balance weight

total force = 120,000 N + 117,600 N

total force = 237,600 N

So the engines must provide a total force of 237,600 Newtons.

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The number of electrons that could occupy the quantum states described by n = 4, ℓ = 1, and mℓ = −1 is 2.

(a) The quantum numbers given represent the 4p orbital. According to the Pauli exclusion principle, each orbital can accommodate a maximum of two electrons with opposite spins.

The number of electrons that could occupy the quantum states described by n = 4 and ℓ = 3 is 14.

(b) The quantum numbers given represent the 4f subshell. The number of orbitals in the 4f subshell is 7, and each orbital can accommodate a maximum of 2 electrons with opposite spins.

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Answer:

helium, hydrogen, nitrogen, oxygen,iron,uranium,

Explanation:

there are 118 elements but here are some

Answer:

i think its b

Explanation:

Answer:

Answer:

Speed is a scalar quantity, that is, it is a number and indicates how fast (or slow) one travels at any given time.

Velocity is a vector quantity, this means that it has magnitude and direction, that is, how fast an object travels and its where its going (speed + the direction in which the object moves).

Acceleration is the ratio of the velocity change over the time interval in which this velocity change occurred. Acceleration as well as velocity is a vector quantity so it is made up of magnitude and direction.

The differences between these three quantities are important for the description of the movement. In the case of speed and velocity, its difference lies in the fact that velocity indicates the direction in which the movement is taking place (and speed is only a number), which in many physical phenomena the direction of movement is an important property. And the difference between acceleration and velocity is that acceleration instead of a velocity indicates a change in velocity (either in magnitude, direction or both), which tells us how fast a velocity will increase or decrease over time.

Answer:

True

Explanation:

Lose of water content in our body through sweating and lose of essential salts such as potassium and sodium causes heat cramps...

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The DOH issues advisories from June to November due to increased health risks associated with the rainy season, disease outbreaks, and the need for preparedness and public education.

The Department of Health (DOH) issues public health advisories during the months of June to November for several reasons related to public health concerns specific to that time period. Here are some possible reasons:

1. Rainy Season: In many regions, June to November corresponds to the rainy season or monsoon season. During this time, there is an increase in rainfall, which can lead to various health risks such as waterborne diseases, flooding, and increased vector population (mosquitoes, rats, etc.). The DOH issues advisories to raise awareness and provide preventive measures against these risks.

2. Disease Outbreaks: Certain diseases are more prevalent or have a higher likelihood of outbreaks during specific months. For example, dengue fever is commonly associated with the rainy season due to the increased breeding of mosquitoes in stagnant water. Leptospirosis, which is transmitted through contaminated water, is also more common during this period. The DOH issues advisories to inform the public about these diseases and how to prevent them.

3. Preparedness and Response: The DOH aims to promote preparedness and timely response to public health emergencies. By issuing advisories in advance, they can inform the public about potential health risks, preventive measures, and necessary actions to take. This helps individuals and communities be better prepared and able to respond effectively to health threats.

4. Awareness and Education: Public health advisories serve as a means to educate and raise awareness about health-related issues. The DOH uses these opportunities to disseminate information on proper hygiene practices, sanitation, vaccination, and other preventive measures. By targeting specific months, they can address the specific health concerns associated with that time of the year.

It's important to note that the specific reasons for issuing advisories during these months may vary depending on the region and prevailing health risks. The DOH assesses local epidemiological data and collaborates with other agencies to determine the appropriate timing and content of the advisories.

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The speed gradually decreases for a while, and then stays constant because of force of friction acting on it.

When the puck slides on a surface with friction, the force of friction acts on it, which opposes its motion. This force gradually slows down the puck until it reaches a point where the force of friction balances the force that was initially driving it forward. At this point, the puck's speed stays constant because the two forces are balanced. However, it takes some time for the puck to reach this equilibrium point, during which the speed gradually decreases.

Option (c) best describes the motion of the puck in this case. Option (a) is not correct because the force of friction causes the speed to decrease. Option (b) is also not correct because the speed decreases due to friction. Option (d) is not applicable in this case because there is no net increase in the speed of the puck. Option (e) is not correct because the puck's speed stays constant once it reaches equilibrium.

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Answer: The area of brick in contact with the floor is 1539 \(cm^{3}\).

Explanation:

Given: Length = 19 cm

Width = 9 cm

Height = 9 cm

As the brick is rectangular in shape. Hence, its area will be calculated as follows.

\(Area = length \times width \times height\)

Substitute the values into above formula as follows.

\(Area = length \times width \times height\\= 19 cm \times 9 cm \times 9 cm\\= 1539 cm^{3}\)

Thus, we can conclude that area of brick in contact with the floor is 1539 \(cm^{3}\).

Answer:

Think it is C

Explanation:

Not sure!!!

Answer:

16 no answer is 50 and 17 no answer is10

Explanation:

first one is 50

second one is 10

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