A satellite of mass 1000kg is in a circular orbit around a planet. The centripetal acceleration of the satellite in its orbit is 5m/s^2. What is the gravitational force exerted on the satellite by the planet?

A. 0N
B. 200N
C. 5000N
D. 10000N

a) Buoyant force acting on the balloon is 1429.68 N ; b)Net force on the balloon is 1282.53 N.

An upward force exerted by a fluid that opposes the weight of a partially or fully immersed object is called buoyant force.

Given, radius of balloon, r is 3 m ; Mass of balloon with instruments, m = 15 kg ; Acceleration due to gravity, g = 9.81 m/s² and Density of air, ρ  is 1.29 kg/m3

a) Volume of balloon is ;

V= 4/3 π r³

= 4/3 π (3)³

= 113.09 m³

Buoyant force , F = ρ v g

= 1.29 * 113.09 * 9.8

So, F = 1429.68 N

Buoyant force acting on balloon is 1429.68 N

b) Net force acting on the balloon is ;

Fn = F -W

=  1429.68  - ( 15 * 9.81)

= 1429.68  - 147.15

So, Fn = 1282.53 N

Net force on the balloon is 1282.53 N.

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The simple machines that are used in the tool or device include all of the following:

In Science, a simple machine can be defined as a type of machine that is designed and developed with no moving parts, but can be used to perform a specific work.

Additionally, there are six (6) simple machines and these include the following;

Generally speaking, a simple machine allows for the transformation of energy into work.

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Answer:

a.

electric circuit.

Explanation:

A path through which electric charges flow. A continuous, unbroken path through which electrons can flow is a closed circuit. Charges, or current, can flow only through a closed circuit. A break or opening in a circuit creates an open circuit.

Answer:

The answer would be A

Explanation:

An electric circuit.

Hope this helped!

"No one's like me, I'm Harley frickin' Quinn"!

-Harley Quinn (Birds of Prey)

Answer:

600Hz

Explanation:

When the area of each plate is doubled while keeping the charge and separation constant, the electric field decreases, the potential difference remains the same, and the stored energy in the capacitor increases four times.

When the area of each plate of a capacitor is doubled while keeping the total charge on each plate and the separation between the plates constant, the following changes occur:

1. Electric Field: The electric field between the plates decreases. The electric field (E) between the plates of a capacitor is inversely proportional to the area (A) of the plates. As the area is doubled, the electric field is halved, assuming the other factors remain constant.

2. Potential Difference: The potential difference (V) across the plates remains the same. The potential difference across the plates of a capacitor depends on the charge (Q) and the capacitance (C), which is determined by the geometric and material properties of the capacitor. Since the total charge and separation between the plates are held constant, the potential difference remains unchanged.

3. Stored Energy: The stored energy in the capacitor increases four times. The energy stored in a capacitor (U) is directly proportional to the area of the plates (A). When the area is doubled, the stored energy is quadrupled (increases by a factor of four).

Therefore, when the area of each plate is doubled while keeping the charge and separation constant, the electric field decreases, the potential difference remains the same, and the stored energy in the capacitor increases four times.

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Available options are:

A. –4500 N

B. –2500 N

C. 2500 N

D. 4500 N

Answer:

-4500 N

Explanation:

Given that we have F₁ = 3000N? (force of the barge)

the force of the tugboat is F '

To pull the barge, the force of the tugboat must be greater than or equal to the force of the barge.

Hence, according to Newton's third law which states that for every action or force in nature, there is an opposite reaction.

Therefore considering the available option the correct answer is "- 4500N, " this is because it is greater than the force of the barge and it's in opposition to the force exerted.

Answer:

The answer is -4500 N

Explanation:

Answer:

10 °C

Explanation:

Applying

q = cm(t₂-t₁)............... Equation 2

Where q = heat energy, c = specific heat of ethanol, m = mass of ethanol, t₁ = initial temperature, t₂ = Final temperature.

Given: c = 2.44 J/g.°C,  m = 300 g, q = 14640 J, t₂ = 30°C

Substitute into equation 2 and solve for t₁

14640 = 2.44×300(30-t₁)

14640 = 732(30-t₁)

732(30-t₁) = 14640

(30-t₁)  = 14640/732

(30-t₁)  = 20

t₁ = 30-20

t₁ = 10 °C

Answer:

30°C

Explanation:

i just did it

A thin lens of focal length 68 cm forms a real image 4.6 times as high as the object. The object and image are approximately 299.13 cm apart.

To solve this problem, we can utilize the lens formula:

1/f = 1/v - 1/u

where f is the focal length of the lens, v is the image distance, and u is the object distance. Given that the focal length (f) is 68 cm, we can proceed to find the image and object distances.

Let's assume the height of the object is "h." Since the problem states that the real image formed is 4.6 times as high as the object, the height of the image is 4.6h.

Now, using the magnification formula:

magnification (m) = height of the image (h') / height of the object (h) = -v/u

Given that the magnification is 4.6, we can write:

4.6 = 4.6h / h = -v / u

Simplifying this equation, we get:

-4.6u = v

Now, substituting the values into the lens formula, we have:

1/68 = 1/(-4.6u) - 1/u

To solve for u, we can combine the fractions:

1/68 = (-1 + 4.6) / (-4.6u)

1/68 = 3.6 / (-4.6u)

Cross-multiplying, we find:

-4.6u = 3.6 * 68

Simplifying further:

-4.6u = 244.8

Dividing both sides by -4.6, we get:

u ≈ -53.39 cm

Since the object distance cannot be negative, we take the magnitude of the value:

u ≈ 53.39 cm

Now, we can substitute the value of u into the magnification equation to find v:

4.6 = -v / 53.39

Cross-multiplying and solving for v, we find:

v ≈ -245.74 cm

Taking the magnitude of v, we have:

v ≈ 245.74 cm

To find the distance between the object and image, we add the magnitudes of u and v:

53.39 + 245.74 ≈ 299.13 cm

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Motor unit size can vary in the body. In the finger, the motor unit size is most likely 1 to 10. Thus, the correct answer is Option A.

Motor unit refers to a single motor neuron and the muscle fibers it stimulates. Each muscle in the body has multiple motor units, and each motor unit can contain as little as five muscle fibers and as many as thousands, depending on the muscle's function and location.

Each motor unit operates independently of the others and is influenced by factors such as fatigue and training. Motor unit size can vary widely in the body, with smaller units providing finer control over muscle movement and larger units providing more forceful movements.

In the finger, the motor unit size is most likely to be less than 1 to 10 because the muscles in the fingers are small and require fine control for precise movements such as typing or playing musical instruments. Larger motor units would be more prone to causing unwanted movement and could make it more difficult to perform these tasks.

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_______________________________________________________

Based on the 'Law of Conversation of Energy', potential energy is equal to thermal energy plus kinetic energy.

In summary - Option C is correct

________________________________________________________

Hope this helps!

The conservation of energy states that energy cannot be created or destroyed by ordinary chemical or physical means.

The conservation of energy refers that the total energy present in an isolated system remains constant. It means that a system itself can not generate or consume energy. Energy actually transferred from one form to another.

Conservation of energy: tell us that energy can neither be created nor destroyed, but can be transferred from one form to another. e.g Chemical to mechanical ( combustion of fuel in the vehicle to achieve mechanical work.

The conservation of energy is defined by the first law of thermodynamics. Which states that we can not generate energy or can not destroy energy but only can transfer it from one form to another. Like chemical to heat, Kinetic to potential, etc.

Therefore, the conservation of energy states that energy cannot be created or destroyed by ordinary chemical or physical means.

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Using Newton's second law

\(\\ \sf\Rrightarrow F=ma\)

\(\\ \sf\Rrightarrow 300=2m\)

\(\\ \sf\Rrightarrow m=150kg\)

Hey there!

The formula of “mass” in physics is:

m = F/a

Whereas “f” is ‘force’, “a” is ‘acceleration’, & “m” is your ‘mass’ of course.

mass = 300 Net force/2 acceleration

300 Net force/2 acceleration = m

mass = 150

Therefore, your answer is: 150 kg

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Answer:

In general, A/Ps win, but some synaptic signal transduction is much faster.

Explanation:

The answer depends on the synapse type:

A high-speed action potential (A/P) moves along an axon at ≈ 1 mm every 8.3 μs (≈ 120 m/s). Arriving at a terminal, the A/P voltage spike causes voltage-gated calcium channels to open, flooding the axon bouton with Ca ++

 ions, triggering neurotransmitter release.

Three different types of synapse:

In chemical synapses, transport vesicles dump their payloads into the synaptic gap (via exocytosis), neurotransmitter molecules diffuse across a ≈ 20–40 nm gap, to be sensed by receptor proteins on the post-synaptic cell membrane. Together, this may result in significant synaptic delays (milliseconds).

In electrical synapses, gap junctions open, allowing charged ions (an electric current) to flow cross, with a very short delay from axon bouton polarization ⟶ ion flow ⟶ post-synaptic cell reception.

In retina horizontal cells — said to be using the fastest known synapse type — there is no synaptic delay.

When examining a piston crown that has vertical cracks through the edges of the piston's combustion chamber bowl, Technician A suggests the piston crown was not getting properly cooled due to low mass airflow in the combustion chamber during the valve overlap period. The correct suggestion is Technician A because the piston crown to not get properly cooled and thus causes cracks

While examining a piston crown that has vertical cracks through the edges of the piston's combustion chamber bowl, it was found that the technician A suggested that the piston crown was not getting properly cooled due to low mass airflow in the combustion chamber during the valve overlap period. While technician B suggests the cracks were caused by inadequate cooling by the oil cooler nozzles.

In this situation, technician A is correct. During valve overlap, a low-mass airflow occurs, which leads to an increased temperature of the combustion chamber. This causes the piston crown to not get properly cooled and thus causes cracks. Therefore, technician A's suggestion is correct.

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Answer:

it is a interspecific competition

Explanation:

i just took a test with this question

Answer:

d. sexual reproduction

Explanation:

A single cell divides to make two cells and these two cells then divide to: we call this process "cell division" and "cell reproduction," and there are two ways cells divide—mitosis and meiosis. This is all part of sexual reproduction.

As the force exerted by the mass in the both cases was same on the both sides so that the object was said to be in the rest condition so they are said to be same in both conditions.

define pulleys ?

A wheel on an axle or shaft known as a pulley is used to transfer power from the shaft to the cable or belt or to sustain movement and direction change of a taut cable or belt. When a pulley is supported by a frame or shell and is used to guide a cable or apply force rather than transmit power to a shaft, the supporting shell is referred to as a block and the pulley may be referred to as a sheave.

For the purpose of locating the cable or belt, a pulley may include a groove or grooves between flanges around its circle. A rope, cable, belt, or chain may serve as the driving component of a pulley system.

As the force exerted by the mass in the both cases was same on the both sides so that the object was said to be in the rest condition so they are said to be same in both conditions.

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An atom with only 1 to 3 valence electrons will tend to lose/subtract those valence electrons. That is option D.

Valence electrons are those electrons that are located at the outermost layer of an atom.

During a chemical reaction, elements that have 1 or 2 or 3 valence electrons donate or give out their electron to form a chemical bond with another aton if an element.

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Answer:

The answer for this question is B water vapor

Explanation:

just trust me bro

Answer:

4200 Newtons

Explanation:

Force = mass x acceleration

1200 x 3.5 = 4200

Answer: The watermelon

Explanation: The watermelon has a larger mass than the rest of the three.

Answer:

the correct one is F’= 4500 N

Explanation:

To solve this problem we must use Newton's second law

where F₁ is the force of the barge F₁ = 3000N and the force of the tugboat is F '

            F '- F₁ = m a

we substitute

            F '- 3000 = m a

the mass is always a positive quantity, therefore if we want the tug to pull the barge

            F ’-3000> 0

when you check it, you respect the correct one is F’= 4500 N

Answer:

The answer is -4500 N

Explanation:

I just got it right on the test

(a) Both spheres are launched with 0 initial velocity in the vertical direction, so they both hit the ground at time t such that

10 m - 1/2 g t ² = 0

where g = 9.80 m/s² is the magnitude of the acceleration due to gravity.

Solve for t :

10 m = 1/2 g t ²

t ² = (20 m) / g

t ≈ 1.4 s

(b) Sphere A travels a horizontal distance of

(5.0 m/s) (1.4 s) ≈ 7.1 m

while sphere B travels a distance of

(2.5 m/s) (1.4 s) ≈ 3.6 m

Faraday's law allows us to find the magnetic field that produces the emf in the rotating system is:

Faraday's law of induction states that when the magnetic flux changes in time, an induced electromotive force is produced.

            fem = \(- \frac{d \Phi_B }{dt}\)  

where fem is the induced electromotive force and Ф the flux,

The magnetic flux is the scalar product of the field and the area.

           \(\Phi_B = B . A = B A \ cos \theta\)  

In this case we have several turns, so the expression remains.

           fem = \(- N B A \ \frac{d cos \theta}{dt}\)  

Indicate that the turns rotate at a constant frequency, therefore we can use the uniform rotational motion ratio.

           θ = w t

We substitute

         \(fem = - N B A \ \frac{d \ cos \ wt}{dt}\\fem = N B A w sin \ wt\)

the maximum induced electromotive force occurs when the sine function is ±1

          fem = N B A w

They indicate that the fem = 24 V, the number of the turn is N = 20, the area is A = 75 cm² = 75 10⁻⁴ m² and the frequency f = 60 Hz

Frequency and angular velocity are related.

           w = 2π f

We substitute.

           fem = N B A 2π f

           \(B = \frac{fem }{2 \pi \ NA \ f}\)  

Let's calculate.

         \(B= \frac{24 }{2\pi \ 20 \ 75 \ 10^{-4} 60}\)B = 24 / 2pi 20 75 10-4 60

         B = 0.424 T

In conclusion, using Faraday's law we can find the magnetic field that produces the emf in the rotating system is:

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Light waves cannot travel through solid objects. Therefore, the correct answer is option B.

Lightwaves or visible light are a part of electromagnetic waves/radiation that can be perceived by the human eye. It can travel through various types of mediums and even in a vacuum.

When light travels, it interacts with the atoms and molecules in the medium that it is going through. Because of that, light travels fastest in an empty space and travels the slowest in solid objects.

That being said, light can not travel through many kinds of solid objects. It's because solid objects tend to absorb light instead of allowing it to pass through them.

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Answer:hence, the force needed to accelerate the 1000kg car by 3m/s2 is 3000N

Explanation:

plz mark as brainlyist plz

The differences in plugs and receptacles are based on the electrical current type (AC or DC) and voltage rating of the device.

Electrical plugs and receptacles are designed to provide a safe and efficient connection between devices and power sources. The variation in plugs and receptacles exists to accommodate different electrical systems and standards used worldwide.

One important factor that influences the design of plugs and receptacles is the electrical current type. Most commonly, alternating current (AC) is used for residential and commercial power supply, while direct current (DC) is utilized for specific applications or devices. AC plugs and receptacles are typically designed with two or three prongs to connect to the live, neutral, and ground wires, ensuring the correct flow of alternating current. DC plugs and receptacles, on the other hand, may have different configurations depending on the specific voltage and current requirements of the device.

Another significant consideration is the voltage rating of the device. Different countries and regions have varying voltage standards for their power supply. For example, in the United States, the standard voltage for residential outlets is 120 volts, while in many other countries, it is 220-240 volts. The design of plugs and receptacles incorporates features such as prong shape, size, and spacing to ensure compatibility with the specific voltage rating of the device and the corresponding power supply.

In summary, the design and configuration of plugs and receptacles are primarily influenced by the electrical current type (AC or DC) and the voltage rating of the device. These variations ensure safe and efficient electrical connections while considering regional standards and requirements.

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Answer:

It will be 400 meters.

Explanation:

100 total seconds divided by 5 second interval equals 20.

Then 20 intervals multiplied by 20 meters per interval equals 400 meters.

Answer:

With a pressure, for instance, of 4 atmospheres, and a volume of 5 liters yields 4 x 5 = 20. Divide the result by the number of moles of gas. If, for instance, the gas contains 2 moles of molecules: 20 / 2 = 10. Divide the result by the gas constant, which is 0.08206 L atm/mol K: 10 / 0.08206 = 121.86.

When a beam of 11 keV X-rays illuminates a sample, the angles that will produce diffraction maxima of the first, second, and third order can be calculated using Bragg's law, which states that nλ = 2d sin(θ), where n is the order of diffraction, λ is the wavelength of the X-rays, d is the spacing between crystal lattice planes, and θ is the angle of incidence.

Bragg's law can be used to calculate the angles for diffraction maxima. For the first-order maximum (n = 1), we have λ = 2d sin(θ₁). Rearranging the equation, we get sin(θ₁) = λ / (2d). Substituting the values, with λ representing the wavelength of 11 keV X-rays (which can be converted to the corresponding wavelength), and the known spacing between lattice planes, we can solve for θ₁.

For the second-order maximum (n = 2), the equation becomes λ = 2d sin(θ₂). Solving for sin(θ₂) and substituting the values, we can find θ₂.

Similarly, for the third-order maximum (n = 3), we use λ = 2d sin(θ₃) to determine sin(θ₃) and find θ₃ by substituting the values.

By calculating these angles using Bragg's law, we can determine the angles that will produce diffraction maxima of the first, second, and third order for the given beam of 11 keV X-rays illuminating the sample.

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