A 150 kg box requires a force of 200 N to be pushed across the floor at a constant velocity 2.0 m/s. What is the Normal Force acting on the box?

Answer:

Given that

speed u=4*10^6 m/s

electric field E=4*10^3 N/c

distance b/w the plates d=2 cm

basing on the concept of the electrostatices

now we find the acceleration b/w the plates  to find the horizontal distance traveled by the electron when it hits the plate.

acceleration a=qE/m=\(1.6*10^{-19}*4*10^3/9.1*10^{-31} =0.7*10^{15}\)=\(7*10^{14}\) m/s

now we find the horizontal distance traveled by electrons hit the plates

horizontal distance

\(X=u[2y/a]^{1/2}\)

=\(4*10^6[2*2*10^{-2}/7*10^{14}]^{1/2}\)

=\(3*10^{-2}\)= 3 cm

Answer:

Titan.It is the largest moon of Saturn

Air masses contribute to the formation of air fronts because air masses are large bodies of air that have similar characteristics in terms of temperature, humidity, and stability.

When two air masses with different characteristics come into contact, they form a boundary known as an air front. The characteristics of the two air masses determine the type of air front that forms.

There are four types of air fronts: cold fronts, warm fronts, stationary fronts, and occluded fronts.

Air masses play a significant role in the formation of air fronts because they determine the characteristics of the air mass that will form at the boundary between the two air masses. This, in turn, determines the type of air front that will form and the type of weather that will result. For example, a cold, dry air mass coming into contact with a warm, moist air mass will likely result in a cold front and a period of heavy precipitation.

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Answer:

r = 2.031 x 10⁶ m = 2031 km

Explanation:

In order for the asteroid to orbit the planet, the centripetal force must be equal to the gravitational force between asteroid and planet:

Centripetal Force = Gravitational Force

mv²/r = GmM/r²

v² = GM/r

r = GM/v²

where,

r = radial distance = ?

G = Universal Gravitational Constant = 6.67 x 10⁻¹¹ N.m²/kg²

M = Mass of Planet = 3.52 x 10¹³ kg

v = tangential speed = 0.034 m/s

Therefore,

r = (6.67 x 10⁻¹¹ N.m²/kg²)(3.52 x 10¹³ kg)/(0.034 m/s)²

r = 2.031 x 10⁶ m = 2031 km

At a distance of approximately 0.02 meters from the wire, the magnetic field is equal to 3.5 × 10^−5 T. In order to calculate distance at which the magnetic field from the wire is equal to 3.5 × 10^−5 T, we will use the formula for the magnetic field around a straight wire:
B = (μ₀ * I) / (2 * π * r)

So,  the magnetic field around a straight wire:
B = (μ₀ * I) / (2 * π * r)
Where B is the magnetic field, μ₀ is the permeability of free space (4π × 10^−7 Tm/A), I is the current, and r is the distance from the wire.
We are given B = 3.5 × 10^−5 T and I = 3.5 A. Our goal is to find the distance r.
1. Plug the given values into the formula:
3.5 × 10^−5 = (4π × 10^−7 * 3.5) / (2 * π * r)
2. Simplify the equation by canceling out the π:
3.5 × 10^−5 = (4 × 10^−7 * 3.5) / (2 * r)
3. Solve for r:
r = (4 × 10^−7 * 3.5) / (2 * 3.5 × 10^−5)
4. Simplify the equation:
r = (1.4 × 10^−6) / (7 × 10^−5)
5. Divide the numbers:
r ≈ 0.02 m
Therefore, a distance of app 0.02 meters from the wire, the magnetic field will be 3.5 × 10^−5 T.

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The option There is a warm layer of air and a cold layer of air closer to the ground. is the correct answer

7.26 x 10-5 rad/sec

The angle of one rotation is 2π. The time required for this rotation is 24 hours to calculate the angular speed of the Earth as it rotates completely around its own axis. Average Angular Velocity Wav is the average rate of change of angular displacement.

On converting the hours into seconds we get,

Time = 24 hr x 60 min/hr x 60 sec/min = 86400 sec

The angular speed is given by the formula, ω = θ /t.

after substituting the value given in the equation we get,

ω = 2π / 86400 Seconds

ω = 0.0000726 radians/sec = 7.26 x 10-5 rad/sec

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360 degrees per 24 hours

The second polarizer's axis is positioned at a 90-degree angle, and the light intensity that passes through it is 0.

The incident light is ordinary light. it is unpolarised

I₁=I₀/2  For the first polarized

I₂=I₁cos²θ          (Second polarization)

 =I₀/2 cos²90°             (θ=90)

 =I₀/2(0)²

 =0

When an area is measured on a plane perpendicular to the direction of energy propagation, it is possible to define the intensity or flux of radiant energy as the power transferred per unit area. Watts per square meter (W/m2) and kg/s3 are the basic units for this system in the SI. The term "intensity" is most usually used to describe electromagnetic or acoustic waves, such as light or radio waves, where the average power transfer over the course of one wave period is taken into account. Any situation where energy is exchanged can be described as having intensity. The amount of kinetic energy that water drops from a garden sprinkler are carrying, for instance, might be calculated.

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Answer: mechanical waves are caused by the disturbance of vibration in matter, whether solid, gas, liquid, or plasma.

Explanation:

Answer:

Carbon: 1

Oxygen: 2

Explanation:

Carbon dioxide, or CO₂, has 1 carbon atom and 2 oxygen atoms per mole.

Secondary (S) waves of an earthquake cannot travel through the Earth's outer core.

S-waves, also known as shear or transverse waves, are a type of seismic wave that move by shearing or shaking particles at right angles to the direction of wave propagation. Unlike primary (P) waves, which can travel through all types of materials, S-waves can only travel through solid materials.

The Earth's outer core is primarily composed of liquid iron and nickel, preventing S-waves from passing through it. As a result, there is an S-wave shadow zone on the opposite side of the Earth from the earthquake's epicenter where no S-waves are detected.

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The new acceleration would be 24.0 m/s/s.

Acceleration is the rate of change of velocity of an object over time. It is a vector quantity, meaning that it has both magnitude and direction. Acceleration is the result of applying a force to an object, and can be described mathematically as the change in velocity (or speed) divided by the time it takes for the acceleration to occur. Acceleration can also be caused by a change in the direction of motion and is measured in meters per second squared (m/s2). It is an important concept in physics, and is used to describe motion in objects ranging from cars to planets.

The new acceleration would be 24.0 m/s/s. This is because the acceleration of an object is directly proportional to the force applied to it, and inversely proportional to its mass. Therefore, doubling the mass of the object would halve the acceleration, since the force applied to the object remains the same.

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Answer: coal

Explanation:  Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs

Suki can go 0.854 meters to the end before the beam starts to tilt.

Beam length: L = 6.5 m

Beam weight: W b = 336 N

Suki's weight is W s = 590 N.

Suki stands in the middle of the steel beam and moves toward the end. Since the beam is supported by two posts that are spaced three meters apart, the distance she may go before the beam starts to lean is determined by how far she moves from the left support.

Thus;

according to formula

Wb × (3/2) = (Ws × x)

where:

Wb= Beam weight

Ws= Suki's weight

Adding the necessary values results in;

336 × 1.5 = 590 × x

x = (336 × 1.5)/590

x = 0.854 m

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If a reaction occurs very rapidly, even at a relatively low temperature, it is probably true that the reaction has a low activation energy. This means that option (c) is the correct option.

Activation energy is the minimum amount of energy required for a chemical reaction to occur. A low activation energy means that a smaller amount of energy is needed to initiate the reaction. If a reaction proceeds rapidly at a low temperature, it suggests that the reactants have sufficient energy to surpass the activation energy barrier even at that lower temperature.Activation energy is denoted by Ea. It is usually measured in joules (J) and or kilojoules per mole (kJ/mol) or kilocalories per mole (kcal/mol).Therefore option c is correct.

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Physics is the branch of science that deals with the structure of matter and how the fundamental constituents of the universe interact. It studies objects ranging from the very small using quantum mechanics to the entire universe using general relativity.

Answer:

please ask this question separately

Explanation:

Uniformly Accelerated motion : When a body moves along a straight line and its velocity increases by equal amounts in equal interval of time then the motion is called uniformly accelerated motion. E.g.:- Motion of a freely falling body.

Uniform Motion : When a body covers equal distances in a straight line, equal intervals of time are called uniform motion. Example: a car moving at 20km/h in a straight line. When a body covers unequal distance in equal intervals of time in a straight line is called non-uniform Example : spinning wheel.

In Uniform Velocity Motion a body will be moving with a constant /unchanging velocity moving in a particular direction and thus acceleration will be zero whereas in Uniform accelerated motion a body will move at constant acceleration and its velocity will keep changing with time at a constant/ steady rate.

We must use the mechanical advantage formula to determine the length of the ramp:

Output force minus Input force equals Mechanical Advantage (MA). In this instance, the input force is the force required to hoist the object in the absence of the ramp, and the output force is the weight of the object being raised up the ramp

By dividing the length of the slope by its height, you may calculate the optimal mechanical advantage of an inclined plane. The ideal mechanical advantage of a ramp, for instance, is 3 metres 1 metre, or 3 metres, if you are loading a truck that is 1 metre high utilising it.

Basic Machines' Mechanical Advantage and Efficiency Calculated. The IMA is typically calculated as the resistance force (Fr) divided by the effort force (Fe). IMA is also equal to the product of the load's travel distance (d) and the distance over which the effort is applied (de).

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Answer:420ms^-1

Conserving linear momentum (mv)=(MV)

a) To calculate the magnitude of the acceleration of the crate, we can use the formula:

acceleration = (change in velocity) / time The change in velocity is given as 4 m/s - 1 m/s = 3 m/s, and the time is given as 2 seconds. Plugging these values into the formula, we have: acceleration = (3 m/s) / (2 s) = 1.5 m/s² So, the magnitude of the acceleration of the crate is 1.5 m/s². b) To find the magnitude of the frictional force between the crate and the surface, we can use Newton's second law: frictional force = mass * acceleration The mass of the crate is given as 5 kg, and the acceleration is 1.5 m/s² (from part a). Plugging these values into the formula, we have: frictional force = (5 kg) * (1.5 m/s²) = 7.5 N So, the magnitude of the frictional force between the crate and the surface is 7.5 N.

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Answer: A, B, and C

Explanation: A standard room-vacuuming robot doesn't unpack itself from the box it comes in.

Answer:

Explanation:

\(a=\frac{v_f-v_0}{t}\) We don't yet need the mass of the car, as we can see by this equation. What we do need is the velocity of the car, the initial velocity, in meters per second, and right now it's in km/hr. Not good. We need to convert. The conversion is as follows:

\(54\frac{km}{hr}*\frac{1000m}{1km}*\frac{1hr}{3600s}=15\frac{m}{s}\) Ok, that's good. Now we have everything we need but the time element. If the car traveled a distance of 40 meters at 15 m/s, then we can use the d = rt equation to solve for t, and when we find t we plug it into the acceleration equation:

40 = 15t and

t = 2.7 seconds. The car traveled for 2.7 seconds to go that 40 meters. That's the only reason we were given the displacement. We need it for nothing else but that.

Filling in the acceleration equation now:

\(a=\frac{0-15}{2.7}=-5.6\frac{m}{s^2}\) and the negative indicates we are in fact slowing down. That's the answer for the acceleration portion of the problem; now we need the force, F, applied to the brakes.

F = ma where m is mass (we get to use that value now!) and a is -5.6 m/s/s.

F = 500(-5.6) and

F = -2800 N and the negative here means that the force of the brakes is acting against the motion of the car: the brakes are pulling the car "backwards" to stop while the car's motion is forward. The negative indicates the direction the force is being applied.

The angular speed of the basketball that turns 15 times in 3 seconds is 5 rev/s

Angular speed is the rate of change of angular displacement is called angular speed.

To calculate the angular speed of the basketball, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the angular speed is 5 rev/s

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The defining characteristic of Trojan asteroids is their location in space. They are asteroids that share the orbit of a planet, leading or following the planet in its path around the sun. Specifically, Trojan asteroids are located in stable points known as Lagrange points, which are positions in space where the gravitational forces of two large objects, such as a planet and the sun, are balanced by the centripetal force of a smaller object.

Trojan asteroids are named after the mythical Trojan Horse from the Trojan War, because their discovery in the late 19th century was seen as a "hidden" population of asteroids that were difficult to detect due to their location in the same orbit as Jupiter. Today, Trojan asteroids have been found associated with several planets in the Solar System, including Mars, Neptune, and even Earth.

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The given statement, "According to the Beer-Lambert Law, transmittance is directly proportional to the concentration of light absorbing chemical species in the sample," is true.

The reason is that According to the Beer-Lambert Law, the transmittance of light through a sample is inversely proportional to the concentration of light-absorbing species in the sample. In other words, as the concentration of the absorbing species increases, the transmittance decreases.

This relationship is mathematically expressed as T = 10^(-εcl), where T is the transmittance, ε is the molar absorptivity, c is the concentration of the species, and l is the path length.

Therefore, when the concentration of the light-absorbing chemical species in the sample increases, the transmittance decreases proportionally.

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Answer: 311.483

Explanation:

(101°F − 32) × 5/9 + 273.15 = 311.483K

Answer:

If the starting GPE is doubled than it's KE would also double.