what would you do if you are caught on thunder storm

Answer:

Hi, there your answer is False

Explanation:

The initial force that must be applied to the smaller piston in order to start lifting the car is approximately 2,903 N. So the closest option is C) 2900 N.

To solve this problem, we can use Pascal's law, which states that the pressure exerted at any point in an incompressible fluid is transmitted equally in all directions.

Let's denote the force applied to the smaller piston as F_(2) and the force exerted on the wider piston (due to the weight of the car) as F_(1).

The pressure exerted by the fluid is given by:

P = F/A

where P is the pressure, F is the force, and A is the cross-sectional area.

Since the pistons are initially at the same level, the pressure at any point in the fluid is the same. Therefore, we can equate the pressures exerted on both pistons:

P_(1) = P_(2)

F_(1)/A_(1) = F_(2)/A_(2)

Given that the wider arm of the U-tube has a radius of 18.0 cm (or 0.18 m) and the narrower arm has a radius of 5.00 cm (or 0.05 m), we can substitute the values into the equation:

F_(1)/(π × (0.18)^2) = F_(2)/(π × (0.05)^2)

Simplifying the equation:

F_(1)/0.0324 = F_(2)/0.00785

F_(1) = F_(2)× (0.0324/0.00785)

Now, we can substitute the known force F_(1) = 12,000 N and solve for F_(2):

12,000 N = F_(2) × (0.0324/0.00785)

F_(2) = 12,000 N × (0.00785/0.0324)

F_(2) ≈ 2,903 N

Therefore, the initial force that must be applied to the smaller piston in order to start lifting the car is approximately 2,903 N. So the closest option is C) 2900 N.

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Here, we are required to find the relationship between balls of different mass(a measure of weight) and different volumes.

The density of an object is given as its mass per unit volume of the object.

Mathematically;.

For Case 1:

For Case 2:

For Case 3:

For case 4:

Therefore, Ball X and Ball Y have the same density.

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Answer:

1. Ball A

2. Thier densities are equal.

3. Ball Q

4. Ball Y

Explanation:

I just did the question, and these are the correct answers!

Hope this helps!

The change in the internal (thermal) energy of the gas can be calculated using the first law of thermodynamics, which states that the change in the internal energy of a system is equal to the heat added to the system minus the work done by the system.

Since the compression is adiabatic, no heat is added to the system, so the change in internal energy is equal to the work done on the gas. Therefore, the change in the internal energy of the gas is 800 J. The answer is (A) 800 J. Thermodynamics is a branch of physics that deals with the relationships between heat, energy, and work. It is concerned with how energy is transferred between systems, and how energy transformations occur within systems. The main principles of thermodynamics are the first and second laws of thermodynamics. The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed, only converted from one form to another.

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The supplied statement states that the material's Young's modulus is 6.8 * 10⁸ Pa.

The strain grows until it becomes constant for the vast majority of materials. The term used to characterize this ratio is the same as Applied load or stiffness modulus. Therefore, an important characteristic of a material is Young's modulus, which represents the stress state.

Y = FL₀/AΔL

Y = (65)(9.81)(45)/π(3.5*10⁻³)²(1.10)

Y = 6.8 * 10⁸Pa

Calculating the Young's modulus involves dividing the stress by the strain ratio.

Strain is lengthening per unit length, while stress is perpendicular force per unit area.

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The specific heat capacity of the air in the balloon is 125.88 J/kg °C.

Specific heat is the amount of energy required to raise the temperature of a unit mass of a substance by one degree. It is measured in joules per kilogram Kelvin (J/kgK). Specific heat is an important physical property of a substance, as it determines how much energy is required to change its temperature. It is also used to calculate the amount of energy released or absorbed during a chemical reaction. Specific heat is also known as heat capacity, and is often used to compare the heat capacity of different materials.

The specific heat capacity of a substance is the amount of energy required to raise the temperature of 1 kg of the substance by 1 °C.
To calculate the specific heat capacity of the air in the balloon, we can use the equation:
Q = m * c * ΔT
Where Q is the change in thermal energy, m is the mass of the air, c is the specific heat capacity, and ΔT is the change in temperature.
Rearranging the equation, we get:
c = Q / (m * ΔT)
Plugging in the values given, we get:
c = 860 J / (0.00320 kg * 215 °C)
c = 860 J / (0.0068 kg °C)
c = 125.88 J/kg °C
Therefore, the specific heat capacity of the air in the balloon is 125.88 J/kg °C.

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Digital filters are important in digital signal processing. FIR and IIR filters are two types of digital filters. The main difference between FIR and IIR filters is that FIR filters are known as non-recursive filters, while IIR filters are recursive filters. In this answer, we will explore more about the differences between FIR and IIR filters.

FIR Filters FIR stands for finite impulse response. FIR filters are also called non-recursive filters. In an FIR filter, the output depends only on the current input and the previous inputs. FIR filters are also known as moving average filters. FIR filters have a linear phase response, which makes them useful in audio and image processing. FIR filters have more stable responses compared to IIR filters, which means they are more predictable.

IIR filters are more efficient than FIR filters because they use feedback loops. IIR filters have nonlinear phase responses, which make them useful in signal processing and control systems. IIR filters are less stable than FIR filters, which means they are less predictable.

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The correct option is d. -2.738 V.

We know that, E°cell = E°cathode – E°anodeIn this question, we need to calculate the potential of an aluminum electrode immersed in 0.05 M KOH solution saturated with Al(OH)3. Let us consider the half-reactions occurring at the cathode and anode.2Al(OH)3(s) + 6OH-(aq) ⇌ 2[Al(OH)6]3-(aq) (cathode)Al(s) + 3OH-(aq) ⇌ [Al(OH)3]-(aq) + 3e- (anode). On balancing the above reactions we get:2Al(OH)3(s) ⇌ Al(s) + 3[Al(OH)4]- (aq) + 3OH-(aq). By applying the Nernst equation, we get: For cathode: E°cathode = 0V (Since it is given that Al(OH)6 is saturated). For anode: E°anode = - (0.0592/3) log10{([Al(OH)4]-]^3/[Al][OH^-]^3)}E°anode = - (0.0592/3) log10{([Al(OH)4]-]^3/[OH^-]^3}E°anode = - (0.0592/3) log10(1.8 × 10^-12)E°anode = 1.076V. On substituting the values of E°cathode and E°anode in the formula of E°cell, we get E°cell = E°cathode – E°anodeE°cell = 0 - 1.076 VE°cell = -1.076 V. We know that the potential of the electrode is equal to the standard potential of the electrode plus the electrode potential calculated from the Nernst equation. potential of the aluminum electrode = -1.662 + (-1.076) = -2.738 V. Therefore, the correct option is d. -2.738 V.

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Magnetism and non-magnetism can be explained using domain theory. In materials with magnetic properties, tiny regions called domains align their magnetic moments, resulting in a net magnetic field. Non-magnetic materials lack such alignment, leading to no significant magnetic effect.

Domain theory provides a framework for understanding the difference between magnetic and non-magnetic materials. In certain materials, such as iron, nickel, and cobalt, the atomic structure allows for the formation of regions known as magnetic domains. Each domain consists of a large number of atoms with their magnetic moments aligned in the same direction. The alignment occurs due to the interaction between neighboring atoms and their electron spins. In the absence of an external magnetic field, these domains may have random orientations, canceling out their individual magnetic effects.

However, when an external magnetic field is applied to the material, the magnetic domains tend to align themselves along the field lines. This alignment strengthens the net magnetic field, leading to magnetization of the material. Once the external field is removed, the domains may retain their alignment, resulting in the material remaining magnetized. This property is what allows magnets to attract certain materials.

On the other hand, non-magnetic materials lack the ability to form and maintain aligned magnetic domains. Their atomic structures and electron configurations do not facilitate the establishment of a net magnetic field. Consequently, when subjected to an external magnetic field, non-magnetic materials do not exhibit significant magnetization. Examples of non-magnetic materials include wood, plastic, and most types of ceramics.

In summary, the key distinction between magnetic and non-magnetic materials lies in the presence or absence of aligned magnetic domains. Materials with magnetic properties possess domains where atomic magnetic moments are aligned, resulting in a net magnetic field. Non-magnetic materials, however, lack this alignment, leading to the absence of a substantial magnetic effect.

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When a glass rod is rubbed, electrons are transferred from one material to another, resulting in a buildup of charge on the glass rod. In this case, the glass rod has been charged to +5.0 nC, indicating that electrons have been removed from the rod. The glass rod has lost electrons, resulting in a net positive charge.

When a glass rod is charged positively by rubbing, electrons are actually removed from the rod rather than protons being added. This process is known as "electrostatic charging" or "triboelectric charging."

During the rubbing process, the glass rod gains electrons from the material it is rubbed against. This transfer of electrons occurs due to differences in the electronegativity or electron affinity between the materials. The material with a higher affinity for electrons tends to attract and remove electrons from the other material.

In this case, as the glass rod is rubbed, it acquires a positive charge because electrons are transferred from the glass rod to the material it is rubbed against. Since electrons have a negative charge, their removal from the glass rod results in an excess of positively charged protons, leading to a net positive charge on the glass rod.

Therefore, in the given scenario, electrons have been removed from the glass rod, resulting in a positive charge.

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The ratio of the ideal projectile distance on the moon to the same projectile distance on earth, moon/back, is approximately (the acceleration of gravity on the moon is 1.62 m/s², about one-sixth of the acceleration due to gravity on earth. for a given initial velocity v0  , and the specified launch angle θ0) is ⅙ (option B)

The initial velocity, launch angle, and acceleration due to gravity all affect a projectile's range. The formula for an ideal projectile's range is as follows:

R = v0²sin (2θ0) / g

Where,

v0 = the initial velocity (m/s)

θ0 = the launch angle

g = the acceleration due to gravity

The acceleration caused by gravity is 1.62 m/s² for the moon and 9.8 m/s² for the earth. Ranges on the moon and ranges on earth can be expressed as follows:

R moon / R earth = (1.62 sin (2θ0)) / g

sin (2θ0) = 1.62 / 9.8

Approximately ⅙

Consequently, an ideal projectile's range on the moon is around a sixth of its range on Earth.

The question is incomplete, it should be:

The acceleration due to gravity on the moon is 1.62 m/s², approximately a sixth of the value on earth. for a given initial velocity v0, and a given launch angle θ0, the ratio of the range of an ideal projectile on the moon to the range of the same projectile on earth, rmoon/rearth, will be approximately?

A. ⅓

B. ⅙

C. 1

D. 1/12

E. ⅕

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The energy system utilized during high intensity sprint is glycogen stored in muscles.

Sprinting burns a ton of calories, improves cardiovascular fitness, develops muscle, and increases speed and power. To step up your training, incorporate them into your program.

Additionally, sprint exercises save a lot of time. Even though up to 60 minutes of moderate exercise should be performed three times each week, most people don't get that much exercise for a variety of reasons, including a lack of time.

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The maximum current in the inductor is approximately 1.21 amperes when a 5.05 μF capacitor initially charged to 15.2 V is connected in series with a 3.75 mH inductor.

To determine the maximum current in the inductor when a 5.05 μF capacitor initially charged to a potential of 15.2 V is connected in series with a 3.75 mH inductor, we can use the formula for the resonant frequency of an LC circuit.

The resonant frequency (fr) of an LC circuit is given by:

fr = 1 / (2π√(LC))

Given:

C = 5.05 μF = 5.05 × \(10^{-6}\)F

L = 3.75 mH = 3.75 × \(10^{-3}\) H

Plugging the values into the formula:

fr = 1 / (2π√(5.05 × \(10^{-6}\) × 3.75 × \(10^{-3}\)))

  = 1 / (2π√(1.89125 ×\(10^{-8}\)))

  ≈ 530,012 Hz

The maximum current (Imax) in the inductor can be calculated using the formula:

Imax = V / Xl

Where:

V is the initial potential (voltage) across the capacitor (15.2 V), and

Xl is the inductive reactance.

The inductive reactance (Xl) is given by:

Xl = 2πfL

Plugging the values into the formula:

Xl = 2π(530,012)(3.75 × \(10^{-3}\))

  ≈ 12.556 Ω

Plugging the values into the formula for Imax:

Imax = 15.2 V / 12.556 Ω  ≈ 1.21 A

Therefore, the maximum current in the inductor is approximately 1.21 amperes.

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Explanation:

A circuit breaker is an automatic switch that cut off current in a circuit when the current become too large. When the current in a circuit increases, the strength of the electromagnet will increase in accordance; this will pull the soft iron armature towards the electromagnet.

Answer:

Ok, as the gas starts to cool down, the kinetic energy of the particles starts to decrease, so the first thing that happens is:

"the gas loses thermal energy" (as the gas cools down, the temperature decreases, so it loses thermal energy)

Now, the kinetic energy must decrease, so now:

"the particles of gas move slower".

Then, as the particles start to move slower, they start to get closer to eachother, then we have:

"The space between the gas particles decreases."

As the particles start to get close to eachother, the density of the gas starts to increase, until a point where we get to the condensation point, here we have a change of phase and the gas changes to a liquid, so here we have:

"The gas changes to a liquid."

Answer:

a

Explanation:

Electromagnetic induction was discovered by Michael Faraday, a British scientist, in the early 19th century. Faraday's experiments and discoveries laid the foundation for understanding the relationship between magnetism and electricity.

While Faraday discovered electromagnetic induction, it was Nikola Tesla who later put it to practical use. Tesla, a Serbian-American inventor and electrical engineer, extensively researched and developed various applications of electromagnetic induction. He invented the alternating current (AC) induction motor, which revolutionized the field of electrical power generation and distribution. Tesla's practical implementation of electromagnetic induction played a crucial role in the development of modern electrical systems and technology.

Electromagnetic induction has found many applications, including electrical components such as inductors and transformers, and devices such as electric motors and generators.

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Answer:

1. A

2. C

3. A

4. B

Explanation:

A conductor allows electric current to pass through it. Hence, when conductors are connected in a closed circuit, current flows.

All the resistors in Q2 are connected in series. In a series connection, the current across all the resistors is the same.

In a battery, chemical energy is converted to electrical energy by chemical reactions.

When a new resistor is connected in parallel to a circuit the current increases accordingly.

Answer:

There are 6.02*10^23 atoms in each mole (Avagadro no.) That is x moles * avagadro no. According to that, in 23 grams of sodium we have 6.02*10^23 atoms of Na.

Explanation:

The distance from the base of the cliff is 13.67 m.

The impact velocity of the block when it falls off the cliff is 15.3 m/s.

Initial velocity of the block, u = 15 m/s

Mass of the block, m = 5 kg

Coefficient of friction, μ = 0.3

Height of the cliff, h = 12 m

μmg = ma

a = μg

a = 0.3 x 9.8

a = 2.94 m/s²

At the initial surface,

Total energy of the block = 1/2mu² - mgh'

E = m(u²/2 - gh)

E = 5(15²/2 - 9.8 x 5)

E = 5 x 63.5

E = 317.5J

The impact velocity of the block when it falls off the cliff is given by,

1/2 mv² = mgh

v = √2gh

v = √(2 x 9.8 x 12)

v = √235.2

v = 15.3 m/s

The distance from the base of the cliff is given by,

R = v√(2h/g)

R = 15.3 x√(2 x 13/9.8)

R = 15.3 x 1.628

R = 13.67 m

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The amount of contextual similarity between the retrieval attempt and the initial encoding phase predicts likelihood of remembering versus forgetting. This refers to the encoding specificity hypothesis

The likelihood of remembering versus forgetting is predicted by the degree of contextual similarity between the retrieval attempt and the initial encoding phase. Encoding specificity hypothesis is being discussed here. According to the encoding specificity theory, the similarity between the contexts during the initial encoding phase and the attempt at retrieval affects how likely it is that information will be remembered.

This theory states that memory retrieval is more successful when the environmental context or retrieval cues coincide with or are similar to those present during the encoding of the material. This idea emphasises the value of environmental signals in aiding memory retrieval and determining whether or not information will likely be remembered or forgotten.

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Answer:

20N

Explanation:

L1 = 4 cm = 0.04 m

L2 = 0.1 mm = 0.0001 m

Area = 0.04 × 0.0001 = 0.000004 m²

Pressure = 4000000 Pa

Force = 4000000 × 0.000004 = 16 N

The internuclear distance for this CO molecule is approximately 1.128 × 10⁻¹⁰ m. By the carbon monoxide molecule, CO, absorbs a photon with a frequency of 1.15 × 101 1 Hz, making a purely rotational.

To answer this question, we need to use the equation for rotational energy levels in a diatomic molecule, which is given by E = h²/8π²I ×J(J+1). Here, E is the energy of the rotational level, h is Planck's constant, I is the moment of inertia of the molecule, J is the quantum number for rotational energy levels, and l is the reduced mass of the molecule.
We know that the photon absorbed by the CO molecule has a frequency of 1.15 × 10¹¹ Hz, which corresponds to an energy of E = hf = 7.63 × 10⁻²⁰ J. We also know that the transition is from a J=0 level to a J=1 level, which means that ΔJ = 1.
Using the equation above, we can set up the following expression for the energy difference between the two levels:
ΔE = E(J=1) - E(J=0) = h²/8π²I ₓ (1+1)(1-0) - h²/8π²I ₓ (0+1)(0-1) = h²/8π²I
We can now substitute the value for ΔE and the given frequency of the absorbed photon into this equation, giving:
h²/8π²I = 7.63 × 10⁻²⁰ J
Rearranging for the moment of inertia, we get:
Finally, we can use the expression for the moment of inertia of a diatomic molecule in terms of its reduced mass and internuclear distance, which is I = μr², to solve for the internuclear distance:
r = √(I/μ) = √(I/mCₓmO) = 1.128 × 10⁻¹⁰ m

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Answer: 120 km per hour.

Explanation: 300/2.5 = 120.

Speed ( units of meter/second or cm/second) = distance ( units of meter or cm)/time (units of second).

Distance ( unit of meter) = speed( unit of meter/second) × time (unit of second).

Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.

Now speed = distance/time

and distance = speed × time.

Now in unit form:

speed ( units of meter/second or cm/second) = distance ( units of meter or cm)/time (units of second).

And distance ( unit of meter) = speed( unit of meter/second) × time (unit of second).

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Answer:can someone help

Explanation: