If you know the answer please answer the following question down in the picture below.

Answer:

Lifting overcomes the pull of gravity. Heavier objects need to have a strong force to lift them. Try lifting a bag of cement and see if it's easy or hard.

Explanation:

I'm thinking C. but this time I'm not that sure

When a light ray propagating in vacuum contains both 600nm light and 400 nm light and is incident on top of a glass cube then 400nm light travels faster than the 600nm light so the answer is (b).

The speed of light in a medium is dependent on the refractive index of the medium, which is a function of the wavelength of the light and the properties of the medium. In general, light with a longer wavelength will travel slower in a medium than light with a shorter wavelength. This is because the longer wavelength light experiences more refraction, or bending, in the medium.

In the case of a glass cube, both the 400 nm and 600 nm light will slow down as they travel through the glass. The 400 nm light will slow down more than the 600 nm light, meaning it will experience more refraction and bend more than the 600 nm light. Therefore, the answer is (b) the 400nm light travels faster than the 600nm light.

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The capacitance characteristics allow to find that the response to increase the separation of the plates are:

A capacitor is a system formed by two parallel plates charged with opposite charge that stores energy, the capacitance is

            C =     \(\frac{Q}{\Delta V} = \epsilon_o \frac{A}{d}\)  

Where C is the capacitance, Q the stored charge, ΔV the voltage difference, A the area of ​​the plates, d the separation between them and ε₀ the dielectric permittivity (ε₀ = 8.85 10⁻¹² \(\frac{C^2}{N \ m^2 }\))

In this case the capacitor is charged and then the separation of the plates increases, the different amounts are affected:

In conclusion of the characteristics of capacitance, let us find that the response for increased separation of the plates are:

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Answer:

Explanation:

The musician is approaching at a speed of approximately 337.3 m/s.

To determine the speed at which the musician is approaching, we can use the formula for the Doppler effect:

Velocity of Source (Vs) = (Velocity of Sound (V) × Observed Frequency (fo) - Source Frequency (fs)) / Observed Frequency (fo)

Given:

Observed Frequency (fo) = 888 Hz

Source Frequency (fs) = 879 Hz

Velocity of Sound (V) = 337 m/s

Substituting the values into the formula:

Velocity of Source (Vs) = (337 m/s × 888 Hz - 879 Hz) / 888 Hz

                      = (300456 Hz - 879 Hz) / 888 Hz

                      = 299577 Hz / 888 Hz

                      ≈ 337.3 m/s

Therefore, the musician is approaching at a speed of approximately 337.3 m/s.

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Answer:

An electrical field duh

Explanation:

None needed self explanitory

The kinetic energy is first at a maximum after approximately 3.67 seconds after t=0.

To determine the time when the kinetic energy is first at a maximum, we need to find the time at which the velocity of the object is at a maximum. The kinetic energy of an object undergoing simple harmonic motion is maximum when the velocity is maximum.

The equation for velocity as a function of time in simple harmonic motion is given by:

v(t) = Aω cos(ωt + φ)

where A is the amplitude, ω is the angular frequency, t is time, and φ is the phase constant.

In this case, the equation for position is x(t) = 2 sin((π/2)t + (π/6)), which is in the form x(t) = A sin(ωt + φ).

Comparing the two equations, we can see that ω = π/2.

The velocity equation becomes:

v(t) = (π/2)A cos((π/2)t + φ)

To find the time at which the velocity is maximum, we need to find when the cosine term is at its maximum value of 1. This occurs when (π/2)t + φ = 0 or (π/2)t + φ = 2π.

Solving for t, we get:

(π/2)t = -φ or (π/2)t = 2π - φ

t = (-2φ/π) or t = (4π - 2φ)/π

Since the phase constant φ in the given equation is π/6, we substitute this value into the equations:

t = (-2(π/6)/π) or t = (4π - 2(π/6))/π

t = -1/3 or t = 11/3

Therefore, the kinetic energy is first at a maximum at t = 11/3 seconds.

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Answer:

P = 0.2 W

Explanation:

Given that,

Force, F = 4 N

Displacement, d = 1 m (say)

Time, t = 20 s

We need to find the power output. Power is the rate of doing work. So,

P = W/t

\(P=\dfrac{Fd}{t}\\\\P=\dfrac{4\times 1}{20}\\\\P=0.2\ W\)

So, the required power is 0.2 W.

The correct match of the descriptions to the below people are 23 - F, 24 - H, 25 - D, 26 - I, 27 - A, 28 - B.

23 - F Galileo: Galileo Galilei is credited with discovering the phases of Venus using a telescope. Through his observations, he observed that Venus went through a series of phases similar to those of the Moon, which supported the heliocentric model of the solar system.

24 - H Kepler: Johannes Kepler was the first to consider ellipses as orbits. He formulated the laws of planetary motion, known as Kepler's laws, which stated that planets move in elliptical paths with the Sun at one of the foci. Kepler's work revolutionized our understanding of celestial mechanics.

25 - D Aristotle: Aristotle, the ancient Greek philosopher, is considered one of the foremost thinkers in history. While his contributions span various fields, including philosophy and natural sciences, his views on astronomy were geocentric. He believed that the Earth was the center of the universe and that celestial bodies moved in perfect circles around it.

26 - I Nicolaus Copernicus: Nicolaus Copernicus was an astronomer who proposed the heliocentric model of the solar system, in which the Sun, rather than the Earth, was at the center. Copernicus's revolutionary idea challenged the prevailing geocentric view and laid the foundation for modern astronomy.

27 - A Eratosthenes: Eratosthenes was an ancient Greek mathematician and astronomer who made significant contributions to geography and astronomy. He is known for his accurate measurement of the Earth's circumference. By measuring the angle of the Sun's rays at two different locations, he estimated the Earth's circumference with remarkable accuracy.

28 - B Aristarchus: Aristarchus of Samos is credited with developing the first predictive model of the solar system. He proposed a heliocentric model centuries before Copernicus, suggesting that the Sun was at the center of the universe, with the Earth and other planets orbiting it. Aristarchus's model was a significant departure from the prevalent geocentric view of the time.

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The centripetal acceleration of Phobos due to Mars' gravity is approximately \(5.19 * 10^{-4} m/s^2\).

To calculate the centripetal acceleration of Phobos due to Mars' gravity, we can use the formula a = v^2/r, where v is the orbital velocity and r is the orbital radius. We can find the velocity of Phobos by dividing the circumference of its orbit by its orbital period:
v = 2πr/T = 2π(9277 km)/(7.65 hours) = 2191.9 m/s
Now we can plug in the values for v and r into the formula:
a = \(v^2/r = (2191.9 m/s)^2/(9277000 m)\) = \(5.19 * 10^{-4} m/s^2\)
Therefore,  this acceleration is very small compared to the acceleration due to gravity on Earth (\(9.81 m/s^2\)) because Phobos' orbit is very close to Mars and Mars has a weaker gravitational pull than Earth.

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Answer:

i cant see it just put the question

Explanation:

Answer:

A) Three hole punch and either a layered plastic or paper

B) Identify the lengths involved  ,

  Length of input arm / length of output arm = L1/ L2

Explanation:

a) Materials involved includes :

Three hole punch and either a layered plastic or paper

Identify the forces acting on the three-hole punch which are Input and output forces

Identify the points where they act

B) procedures involved

The mechanical advantage = output force / input force

step one:  Identify the lengths involved

assuming no friction or relatively small friction \

mechanical advantage can be calculated as : Length of input arm / length of output arm = L1/ L2

Answer:

one of the most famous jobs in the energy feild is mining

its is so dangerous that companies are now moving more towards Autonomus,nonhuman work

these machines travel though the mineshafts and work extracting the ores.

Answer: The air is compressed after the sound wave passes. 4. The density of air increases and then decreases as the sound wave passes.

Explanation:

Archimedes' principle is stated as "an object wholly or partially immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the object."

It explains that the buoyant force acting on an object is equal to the weight of the fluid displaced by the object.In the experiment the object will float, and if the buoyant force is less than the force of gravity, the object will sink. The aim of this experiment was to calculate the density of an object using Archimedes' principle.

The object was suspended from a string, and its weight was measured. Then it was immersed in water, and the weight was measured again. The difference in weight of the object in air and water is equal to the weight of the displaced water. Therefore, the volume of the displaced water could be calculated, and hence the density of the object.

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Answer:

0.6amp or I= 0.6

Explanation:

V=IR

12V=I(20)

12/20=I

0.6=I

Answer:

0.6amp

Explanation:

The magnitude of the object's momentum is approximately 5.47 × 10^7 kg ∙ m/s.

The formula for momentum is p = mv, where p is momentum, m is mass, and v is velocity. In this case, the object's mass is 0.456 kg and its velocity is 1.20 × 10^8 m/s.

To calculate the magnitude of its momentum, we simply plug in these values into the formula:

p = (0.456 kg) × (1.20 × 10^8 m/s)

p = 5.47 × 10^7 kg∙m/s

Therefore, the correct answer is 5.47 × 10^7 kg∙m/s.
To calculate the magnitude of an object's momentum, we will use the relativistic momentum formula, since the object is moving at a significant fraction of the speed of light (c).

Relativistic momentum (p) is given by the formula:

p = (m * v) / sqrt(1 - (v²/c²))

where m is the rest mass (0.456 kg), v is the velocity (1.20 × 10^8 m/s), and c is the speed of light (3.00 × 10^8 m/s).

Let's plug in the values:

p = (0.456 * 1.20 × 10^8) / sqrt(1 - (1.20 × 10^8)² / (3.00 × 10^8)²)
p ≈ 5.47 × 10^7 kg ∙ m/s

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To help you determine the reasonable temperatures for points 1 to 5 in the lower tube, we'll need to consider the given temperature readings in the topmost tube and the temperature changes in the system.

Let's go through the steps to find the temperatures for each point.
Analyze the temperature readings in the topmost tube.
- Observe and record the temperatures at different points in the topmost tube.

Understand the heat transfer process in the system.
- Consider the direction of heat flow, such as from hot to cold regions.

Determine the temperature differences between the tubes.
- Based on the heat transfer process, estimate the temperature differences between the corresponding points in the topmost and lower tubes.

Calculate the temperatures for points 1 to 5 in the lower tube.
- Subtract the estimated temperature differences from the temperatures of the corresponding points in the topmost tube.

By following these steps, you will be able to find the reasonable temperatures for points 1 to 5 in the lower tube based on the given temperature readings in the topmost tube.

*complete question: Given the temperature readings in a topmost tube, which would be reasonable temperatures for points 1 to 5 in the lower tube?

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Answer: It was on between 7 and 7.30 and also between 8 and 8.30 (when the line on the graph goes up only). So it was on for an hour or 60 minutes

Answer: 2 i think

Explanation:

Answer:Im pretty sure its the second one because sound sometimes bounces back and that causes echo and it doesnt travel in one line or direction

Explanation:

A) The capacitance of the spherical capacitor is 1.45 pF (picofarads), B) The radius of the inner sphere is 3.60 cm. and C) The electric field just outside the surface of the inner sphere is \(2.36 * 10^6 V/m\) (volts per meter).

To calculate the capacitance, we can use the formula C = Q/V, where Q is the charge and V is the potential difference. Plugging in the values, we get \(C = (3.20 * 10^{-9} C)/(250 V) = 1.28 * 10^{-11} F\).

However, since the capacitor is a spherical one, we need to use the formula for the capacitance of a spherical capacitor, which is \(C = (4\pi \epsilon_0)(r_1 r_2)/(r_2-r₁)\), where r₁ and r₂ are the radii of the two shells and ε0 is the permittivity of free space.

Rearranging the formula and plugging in the values, we get \(r_1 = (C/4\pi \epsilon_0)(r_2-r_1)/r_2,\) which gives us r₁ = 3.60 cm.

To calculate the electric field just outside the surface of the inner sphere, we can use the formula

E = \(\frac{Q}{4\pi\epsilon_0 r^2}\), where r is the radius of the inner sphere.

Plugging in the values, we get \(E = (3.20 * 10^{-9} C)/(4\pi\epsilon_0(0.0460 m)^2) = 2.36 * 10^6 V/m.\)

This electric field arises due to the charge on the inner sphere and induces an opposite charge on the outer shell of the capacitor.

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Answer:

Graphite.

Explanation:

Graphite: "a gray crystalline allotropic form of carbon which occurs as a mineral in some rocks and can be made from coke. It is used as a solid lubricant, in pencils, and as a moderator in nuclear reactors."

The solution of the magnitude of tyhe net electrical force is given as 3.8 x 10 ^-2 N

C is equal to sqrt(AB2 + BC2) =

sqrt((0.01)2 + (0.03)2 = 0.032 m.

Theta equals

tan^-1(1/3) = 18.42.

F1 = force by charge at A = k Q (15 x 10⁹)/AC² = (9 x 109)(90 x 10⁹)(15 x 10⁻⁹)/(0.032)2 = 0.012 N

F2 = force by charge at B = k Q (5 x 10⁻⁹) /CD²= (9 x 10⁹) (90 x 10⁹), (5 x 10⁹)7(0.01)² = 0.041 N

The value of the net force in the X-direction is

Fx = - F1 Cos18.42 = - (0.012)  Cos18.42 = - 0.012 N

The value of the net force in the Y-direction is

Fy = F1 Sin18.42 - F2 =

= (0.012) Sin18.42 - 0.041 = - 0.037 N

The net force is stated as

\(\sqrt{-0.012^{2}+(- 0.037)^2 } \\= 3.8 * 10^-^2\)

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Answer:

ehehehshehehehhehesh

Explanation:

ehehehehheheheeheh

YES, ELECTRICITY CONCERNS ENERGY WHICH IS USED AS A FUEL . IN MODERN DAY TECH, MOST MACHINES USE ELECTRICITY AS A FUEL SUCH AS THE ELECTRONIC TRAIN IN TOKYO, JAPAN.

Answer:

Electricity is considered an alternative fuel under the Energy Policy Act of 1992. Electricity can be produced from a variety of energy sources, including natural gas, coal, nuclear energy, wind energy, hydropower, as well as solar energy and stored as hydrogen or in batteries.

Explanation:

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Aerobic system is the energy pathway which is dominant when the body is at rest or during low-intensity, long-duration activity.

This is the prices in which substances such as carbohydrates and fats are burnt by the body in the presence of oxygen.

This is usually common in a scenario where the individual is either at rest or performing an activity which has a low intensity thereby making it the correct choice.

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Answer:

A: Balanced

B: Unbalanced

C: Balanced

D: Unbalanced

Answer:

1500

Explanation: