Name the fundamental units used in Physics.​

The frequency of the lowest tone that will resonate in an open pipe of length 2l is 200 Hz. The resonant frequencies of an open pipe are determined by the fundamental frequency, which is inversely proportional to the length of the pipe.

When the length is doubled, the fundamental frequency is halved. In this case, the original pipe had a fundamental frequency of 400 Hz, so when the length is doubled to 2l, the new fundamental frequency becomes 200 Hz. This relationship holds true for open pipes because they support standing waves with nodes at both ends, resulting in a wavelength that is twice the length of the pipe.

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The Kuiper belt is found beyond the orbit of Neptune, from about 30 to 50 astronomical units (AU) from the Sun.

The Kuiper belt is a region of the solar system located beyond the orbit of Neptune, extending from about 30 to 50 astronomical units (AU) from the Sun. It is a region of space where numerous small, icy bodies, including dwarf planets such as Pluto, Eris, Make make, Haumea, and many others, orbit the Sun.

The Kuiper belt is believed to be the source of many short-period comets, and the study of its objects provides important insights into the formation and evolution of the solar system.

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If the spring constant is known, the extension or compression of the spring can be used to calculate the applied force (pull or push) on the spring.

According to Hook's law, the force applied to an elastic material is directly proportional to the extension of the material.

The force applied;

F = kx

where;

The applied force can be in form of push or pull. A push force can result in compression of the spring while a pull force can result in extension of the spring.

If the spring constant is known, the extension or compression of the spring can be used to calculate the applied force (pull or push) on the spring.

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Practically yes

So

If mass is more output may come less so it affects the efficiency practically

But thepritically it doesn't

Answer:

Yes

Explanation:

Formula of motor efficiency

We know from simple physics that the energy of a body is directly proportional to its mass. Here, in the working of a motor, mass may not be involved directly, but the electrical energy required to provide a function will likely have more efficiency when working with lesser masses.

Answer:

The time taken for the train to cross the bridge is 9.01 s

Explanation:

Given;

length of the train, L₁ = 90 m

length of the bridge, L₂ = 0.06 m

speed of the train, v = 10 m/s

Total distance to be traveled, = L₁ + L₂

                                                  = 90 m + 0.06 m

                                                   = 90.06 m

Time of motion = Distance / speed

Time of motion = 90.06 / 10

Time of motion = 9.006 s ≅ 9.01 s

Therefore, the time taken for the train to cross the bridge is 9.01 s

Answer: Brown syrup

Explanation:

Answer:

syrup

Explanation:

The acceleration of this car include the following: A. 2 m/s².

In Science, the acceleration of a car can be calculated by using this mathematical expression:

a = (V - U)/t

Where:  

By substituting the given parameters into the acceleration formula, we have;

Acceleration, a = (40 - 10)/15

Acceleration, a = 30/15

Acceleration, a = 2 m/s².

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The maximum wavelength of light that would produce an output from a photovoltaic device manufactured from a semiconductor with an energy gap of 1.02 eV is 121 nanometer.

Given,

Energy gap = 1.02 eV

Wavelength = ?

We know that,

Speed of light, c, is given as 3 * 10⁸

Planck's constant, h, = 6.626 * 10⁻³⁴

Charge on photons  = 1.602 * 10⁻¹⁹

To calculate the maximum wavelength of light we will use a formula of Einstein's equation

Mathematically, Einstein's equation for photon energy is given by this formula:

E = hf = hc/λ

Where:

E is the energy.

h is Plank's constant.

λ is the wavelength.

c is the speed of light.

To find wavelength using the above formula

λ = hc/E

Now, substituting the values, we get

λ = (6.626 * 10⁻³⁴)(3 * 10⁸) / (1.02)(1.602 * 10⁻¹⁹)

λ = 1.21 * 10⁻⁷ m

In 1 nanometer we have 10⁻⁹ m

λ = 121 nm

Therefore, the  maximum wavelength of light that would produce an output from a photovoltaic device manufactured from a semiconductor with an energy gap of 1.02 eV is 121 nm.

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Answer:

A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there you have it: one light-year. It's about 5.88 trillion miles (9.5 trillion km).

Explanation:

Answer:

The Answer is (B)

Explanation:

(a) The position of the particle when velocity is zero is - 27 m.

(b) The dimensions of a, b, c, and d are LT⁻³, LT⁻², LT⁻¹ and L respectively.

The velocity of the particle is change in position of the particle with time.

v = dx/dt

v = 6t - 18

when velocity = 0

0 = 6t - 18

6t = 18

t = 18/6

t = 3 seconds

x = 3(3²) - 18(3)

x = -27 m

x = at³ + bt²  + ct + d

if t is in seconds and x is meters, the dimensions of a, b, c, and d is calculated as;

x(m) = at³(m/s³) + bt²(m/s²) + ct(m/s) + d(m)

Thus, the dimensions of a, b, c, and d are LT⁻³, LT⁻², LT⁻¹ and L respectively.

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Answer:

THE ANSWE IS C

81

Explanation:

Explanation:

everything can be found in the picture

Answer: 3A, current flowing through the circuit is 3A

Explanation: we know that the voltage given in the figure is 120V

Formula applied - I=V/R

resistors are connected in SERIES

R1= 10

R2= 5

R3= 25

R1+R2+R3=40

I=120/40 =3A

Hence current flowing is 3A

The given statement "after you have driven through standing water, you should apply heavy brake pedal pressure for a short distance to make sure your brakes are still working properly" is false.  

After you have driven through standing water, it is not recommended to apply heavy brake pedal pressure for a short distance. Here's why:

1. When you drive through standing water, your brakes can get wet and become less effective. This is because water can get into the brake components, such as the brake pads and rotors, causing them to become slippery.                      

2. Applying heavy brake pedal pressure immediately after driving through standing water can cause your wheels to lock up and skid. This can lead to a loss of control of your vehicle and potentially result in an accident.                          

3. Instead of applying heavy brake pedal pressure, it is advisable to lightly tap your brakes a few times after driving through standing water. This will help to remove any excess water from the brake components and restore their effectiveness.                                                                  

4. Additionally, it is important to drive at a slower speed and maintain a safe distance from other vehicles after driving through standing water. This will give your brakes more time to dry out and regain their normal functionality.                    

In conclusion, after driving through standing water, it is not recommended to apply heavy brake pedal pressure for a short distance. Instead, lightly tap your brakes a few times to remove excess water and drive at a slower speed until your brakes have dried out. This will help ensure that your brakes are working properly and maintain your safety on the road.

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False. After driving through standing water, you should not apply heavy brake pedal pressure. Instead, you should gently and lightly tap the brakes a few times to dry them out.

False. After driving through standing water, you should not apply heavy brake pedal pressure. Instead, you should gently and lightly tap the brakes a few times to dry them out. This helps to remove any excess water from the brake pads or shoes, allowing them to work effectively. Applying heavy brake pedal pressure can cause the brakes to lock up and potentially lead to a loss of control.

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Answer:

The answer is probably B or C

Option B supports the atomic theory. Thus, this option is correct.

Atomic theory is the theory which states that matter is composed of particles called atoms. It tells us that all the matters are made of very tiny particles called atoms and all atoms of the same kind have the same size in any object.

Let's look at all the options given,

Hence the option B supports the atomic theory. Thus, this option is correct.

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Answer:

it is 59 degrees Fahrenheit

I'm pretty sure it's 59 °F

Answer:

the acceleration of an object is directly pro to the net force acting on it and indirectingly proportional to its mass

For a frictionless pulley with mass connected by a light string, the acceleration for the system when released is equal to 6.5m/s²

Using the formula a = (m₂ - m₁)g/(m₁ + m₂)

Where a = acceleration, m = mass and g = gravity

m₁  = 2kg

m₂ = 10kg

g = 9.8m/s²

Applying to the formula, a = (m₂ - m₁)g/(m₁ + m₂) to find the acceleration of a frictionless pulley when released;

a = (10 - 2)(9.8)/(2 + 10)

a = 8(9.8)/12

a = 6.5m/s²

Therefore the system's acceleration 6.5m/s²

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Answer:

D. are made of cell

Explanation:

first , cell simply means the basic and structural unit of life ......All living organisms have cells

It could be Unicellular(amoeba), colonial form ( volvox) , filamentous form(spirogyra) or multicellular .......

Thermal stress σth = 18.3987 Ksi

No deflection of bar = compression by reaction

αΔTΨ = σΨ/e

σth = αΔTE

=  0.0000065 × 26 × \(10^{3}\) × 88

σth = 18.3987 Ksi

The word "thermal stress" refers to a temperature fluctuation that is extreme enough to have an adverse effect on aquatic creatures, their numbers, community structure, or ecosystem. Aquatic creatures have developed to work best within a specific range of water temperature. Thermal stress is mechanical stress that is produced by any change in a material's temperature in mechanics and thermodynamics. Depending on the other heating variables, such as the type of material and restrictions, these stresses may cause fracturing or plastic deformation. [1] Things that can cause thermal stress include temperature gradients, thermal expansion or contraction, and thermal shocks. The thermal expansion coefficient, which differs amongst materials, has a significant impact on this kind of stress. Typically, the higher the temperature.

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Explanation:

The Carbon Cycle and Earth's climate Carbon Dioxide is an atmospheric constituent that plays several vital roles in the environment. It is a greenhouse gas that traps infrared radiation in the atmosphere. it plays a crucial role in the weathering of rocks. it is the carbon source for plants.

Answer:A

Explanation:

Phát biểu nào sau đây sai?

A. Hàm lượng cacbon trong thép cao hơn trong gang.

B. Sắt là kim loại màu trắng hơi xám, dẫn nhiệt tốt.

C. Quặng pirit sắt có thành phần chính là FeS2.

D. Sắt (III) hiđroxit là chất rắn, màu nâu đỏ, không tan trong nước.

D. Sắt (III) hiđroxit là chất rắn, màu nâu đỏ, không tan trong nước.

CARRY ON LEARNING

CAN YOU BRAINLEST ME

Answer:

I think its

10 kg

plzz plzz plzz. mark as brainliest

If the mass of an object is approximately 60 kg on earth then its mass remains the same on Mars which is 60 kg because mass does not change from place to place.

Mass in physics is a numerical representation of inertia, a fundamental property of all matter. What a body of matter is fundamentally is the resistance it offers to a change in its speed or location brought on by the application of a force. The more mass a body has, the less of a change a force exerts results. The kilogram is the unit of mass in the International System of Units, and it is defined by Planck's constant as being equal to 6.62607015 × 10⁻³⁴ joules second (SI).

According to the question, the weight of an object depends on gravity which is different from place to place so weight also varies from place to place but the mass is constant everywhere it does not change. So, if the mass of an object is 60 kg on earth then it remains the same on mars also.

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The velocity of the ion released from rest and accelerated through a potential difference of 152V is 6.34 × 10^5m/s.

The electric potential difference is a scalar quantity that measures the energy required per unit of electric charge to transfer the charge from one point to another. The electric potential difference between two points in an electric circuit determines the direction and magnitude of the electric current that flows between those two points. A lithium-ion containing three protons and four neutrons has a mass of 1.16 × 10-26 kg. The ion is released from rest and accelerates as it moves through a potential difference of 152 V.

The change in electric potential energy of an object is equal to the product of the charge and the potential difference across two points. The formula to calculate the velocity of the ion released from rest and accelerated through a potential difference of 152V is:

v = √(2qV/m) where q is the charge of the ion, V is the potential difference, and m is the mass of the ion.

Substituting the values in the formula, we get:

v = √(2 × 1.6 × 10-19 C × 152 V/1.16 × 10-26 kg)v = 6.34 × 10^5m/s

Therefore, the velocity of the ion released from rest and accelerated through a potential difference of 152V is 6.34 × 10^5m/s.

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Answer:

The energy an object has due to its motion is called kinetic energy

Explanation:

Factors Affecting Kinetic Energy: the kinetic energy of an object depends on both its speed and its mass.

Answer:

kinetic energy

Explanation:

In physics, the kinetic energy (KE) of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.

Using the idea of work done under gravity, the height of the building is 187 m.

We must recall that the work done in a gravitational field is given by; mgh

m= mass

g = acceleration due to gravity

h = height

mass = 60.0 kg

Workdone = 1.15x10^5 J

W = mgh

h = W/mg

h =  1.15x10^5 J/60.0 kg * 9.8 ms-2

h = 187 m

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