Today's lifestyles have led to increased demands for disposable products. The packaging of these products has caused environmental problems most directly associated with

(1) food web contamination

(2) atmospheric depletion

(3) solid waste disposal

(4) the use of nuclear fuels

Assuming a flat ground, and  football thrown or dropped from the same height, the horizontally-thrown ball will hit the ground with the same vertical velocity as the dropped ball, but it will have most of its initial horizontal velocity, too. A simple vector addition, guarantees that that the horizontally-thrown ball will have a larger total velocity than the dropped ball.

What is Velocity.

Velocity is the directional velocity of a moving object as an indicator of the rate of change of position observed from a particular frame of reference and measured at a particular time standard.

Therefore, A simple vector addition, guarantees that that the horizontally-thrown ball will have a larger total velocity than the dropped ball.

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Astronomers believe moon was originally a part of the earth.

It is said that years before a protoplanet - A large body of matter which orbited the sun - called Theia.

This protoplanet had a size which was almost equal to the size of planet mars. Due to some reason, Theia collided with earth and as a result of the collision, a large amount of earth's matter was ejected out into outer space which remained afloat for a long period of time.

Later this mass got accumulated into a spherical body that we now refer to as the moon which we see in the sky.

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Answer:

a= 4m/s^2

t = 5 secs

v = at

v = 4 × 5

v =20 m/s

Hi there!

Recall the conservation of momentum:

m1v1 + m2v2 = m1v1' + m2v2'

Let m1 = 5 kg ball and m2 = 10 kg ball

Since m2 is at rest, we can rewrite:

m1v1 = m1v1' + m2v2'

Plug in the given values:

5(2) = 5(-1) + 10v2'

Solve for v2':

10 = -5 + 10v2'

15 = 10v2'

15/10 = 1.5 m/s

We know that,

m1v1 + m2v2 = m1v1' + m2v2'

5 x 2 + 0 = 5 x -1 + 10 x v2'

10= -5 +10 x v2'

15 = 10 x v2'

v2' = 15/10

v2' = 1.5 m/s

hence , the speed of the larger ball after the collision will 1.5m/s

Answer:

C

Explanation:

because that's how science works

Answer:

a

Explanation:

f=ma

200=2*m

divide both sides by 2

m=100

When you are driving with a trailer in tow and the road curves to the right, you should move closer to the edge of the roadway during the traffic. Hence, the correct option is (b).

This will help ensure that the trailer does not swing out into the oncoming traffic lane while you are navigating the curve. Additionally, it is important to allow more distance from the edge of the pavement, as the trailer will require more room to make the turn. Driving in heavy traffic can be stressful, but there are some tips and strategies that can help make it easier. First, make sure to leave yourself plenty of time to reach your destination. This will help reduce your stress levels, as you won't be rushing to get somewhere. Second, try to stay in the center lane as much as possible. This will give you the most flexibility and maneuverability in traffic. Third, keep your speed steady, as sudden acceleration and deceleration can make it difficult to navigate traffic and can also be distracting to other drivers.

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Infrared wave basically have shorter wavelengths than X-rays. The correct option is A.

A section of the electromagnetic radiation spectrum with wavelengths ranging from roughly 700 nanometers (nm) to one millimetre is known as infrared radiation (IR), or simply infrared (mm).

While shorter than radio waves, infrared waves are longer than visible light waves.

Infrared radiation has the ability to ease muscle tension and encourage local blood circulation.

Infrared radiation has been used in conventional medicine to treat conditions including autoimmune diseases and issues with wound healing in addition to relieving muscle pain and tension.

Infrared waves are shorter than radio waves but longer than visible light waves.

Thus, the correct option is A.

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Answer:

How much an object has moved

False. The atmospheric low pressure belt centered on 60°S in the southern hemisphere is not continuous around the world at all seasons of the year.

The statement is false. The atmospheric low pressure belt, known as the subpolar low, does not remain continuous around the world at all seasons in the southern hemisphere. The subpolar low is a region of low atmospheric pressure that occurs around 60°S latitude. It is characterized by a belt of low pressure, which is associated with the convergence of polar and mid-latitude air masses.

However, the subpolar low is not continuous throughout the year. It undergoes seasonal variations due to the movement of weather systems and shifts in the global circulation patterns.

During the Southern Hemisphere winter, the subpolar low tends to be more prominent and well-defined, as it is influenced by strong temperature gradients between polar air and warmer air from lower latitudes. In contrast, during the summer season, the subpolar low weakens and becomes less distinct.

This seasonal variation is primarily influenced by the migration of the polar front, which moves closer to the pole during winter and shifts toward lower latitudes during summer. Therefore, the atmospheric low pressure belt centered on 60°S is not continuous around the world at all seasons of the year in the southern hemisphere.

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The distance from the central maximum for violet light is 0.0152 meters.

To find the distances from the central maximum for red and violet light, we can use the formula for the position of the m-th order fringe in a double-slit interference pattern:

y = mλL / d

where y is the distance from the central maximum, λ is the wavelength of light, L is the distance from the slits to the screen, d is the distance between the slits.

For red light with a wavelength of 700 nm (700 x 10^-9 m), substituting the values into the formula:

y_red = (1)(700 x 10^-9 m)(0.95 m) / (25 x 10^-6 m)

     ≈ 0.0266 m

Therefore, the distance from the central maximum for red light is approximately 0.0266 meters.

For violet light with a wavelength of 400 nm (400 x 10^-9 m), using the same formula:

y_violet = (1)(400 x 10^-9 m)(0.95 m) / (25 x 10^-6 m)

        ≈ 0.0152 m

Hence, the distance from the central maximum for violet light is approximately 0.0152 meters.

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If two plates of like charge are close to each other, they form a uniform field.  False.

If two plates of like charge are close to each other, they do not form a uniform field. Rather, they create a non-uniform electric field between them. This is because the electric field lines originating from one plate are repelled by the like charge on the other plate and converge towards the edges of the plates.

The field is stronger near the edges and weaker in the center. As the distance between the plates decreases, the field becomes stronger and the curvature of the electric field lines becomes more pronounced.

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If two plates with similar charges are placed close to one another, a uniform field is created.  False

If two plates with similar charges are placed close to one another, they do not create a consistent field. Instead, they produce an uneven electric field between one another. This is due to the fact that the electric field lines coming from one plate are attracted to the opposite plate's similar charge, which causes them to converge towards the edges of the plates.

The field is weaker in the centre and stronger close to the margins. The field gets stronger and the curvature of the electric field lines gets more prominent as the space between the plates gets smaller.

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Answer:

d

Explanation:

Answer:

D: wire

Explanation:

The pressure also doubled when the temperature did. answer P2=2atm.

According to Gay-Lussac Law, pressure and temperature have a direct relationship: P1/T1=P2/T2.

As long as the volume is kept constant, pressure and temperature will both rise or fall together.

The pressure would also double if the temperature did. The energy of the molecules would grow with increased temperature, and more collisions would occur, increasing pressure.

Double the temperature of a sample of gas that is at STP 1 atm and 273 K.

1atm/273K=P₂/546K\sP₂=2atm

The pressure increased by the same factor as the temperature.

Everything we eat, drink, or use contains energy. The fundamental body functions of the body are powered and governed by energy.

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The resistor that is equivalent to the resistance of the circuit is 1 2/7 Ohms

The equivalent resistance of a circuit is the (single) resistance that can replace the combination of resistances in the circuit such that the current flowing in the circuit remains the same.

Please find attached the drawing of the circuit, created with an online circuit building tool.

Whereby the capacitor also acts as a resistor of 6 Ohms, we get;

Resistors R₄, R₅, and R₆ are parallel

The resistor equivalent to the three resistors is found as follows;

Req₁ =  1/(1/R₄ + 1/R₅ + 1/R₆)

Therefore, Req₁ = (1/(1/2 + 1/1 + 1/6)) = 0.6

Req₁ is in series with R₁, therefore;

Req₂ = Req₁ + R₁ = 0.6 + 3 = 3.6

Req₂, (Req₁ + R₁  combined) is parallel to R₂ and R₃, therefore;

Req₃ = 1/(1/Req₂ + 1/R₂ + 1/R₃)

Req₃ = 1/(1/3.6 + 1/3 + 1/6) = 9/7 = 1 2/7

The equivalent resistor of the circuit is 1 2/7 ohms

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The spring constant of the launcher is approximately 3,048 N/m.

To determine the spring constant of the launcher, we can use the principle of conservation of mechanical energy. The potential energy stored in the compressed spring is converted into the gravitational potential energy of the marble at its maximum height.

The potential energy stored in a spring can be calculated using the formula:

PE_spring = (1/2) * k * x²,

where k is the spring constant and x is the displacement of the spring from its equilibrium position.

The gravitational potential energy of the marble at its maximum height can be calculated using the formula:

PE_gravity = m * g * h,

where m is the mass of the marble, g is the acceleration due to gravity, and h is the maximum height reached by the marble.

Since the potential energy stored in the spring is equal to the gravitational potential energy of the marble, we can set these two equations equal to each other:

(1/2) * k * x² = m * g * h.

Rearranging the equation, we can solve for k:

k = (2 * m * g * h) / x².

Substituting the given values, we have:

m = 20 g = 0.02 kg,

g = 9.81 m/s²,

h = 1.87 m,

x = 6.4 cm = 0.064 m.

Plugging in these values into the equation, we find:

k = (2 * 0.02 kg * 9.81 m/s² * 1.87 m) / (0.064 m)² ≈ 3,048 N/m.

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Answer:

The correct answer is - transform boundary; plates slide past one another in opposite directions causing the formation of faults and earthquakes.

Explanation:

If the continental or oceanic plates slide past one another either in the same direction or in opposition direction forms the transform fault boundary. Due to this tectonic plate formation, no new crust is formed or subducted, but earthquake activities forms.

Convergent boundaries forms by pushing the edge of one plate underneath the other while coming together whereas plates move away from one another causing rift valleys called divergent boundary.

Equation Q/A = E Electric Field within a parallel plate capacitor

∴ Q = E*Aε

E = 10^6 N/C

A = 4*4 = 16cm^2 = 16 * 10^-4 m^2

ε = 8.852 * 10^-12 F/m

Q = +/- 10^6 * 16 * 10^-4 * 8.852 * 10^-12

= +/- 141.6 * 10^-10 C

= +/- 14.2 nC

You can think of an electric field as a physical field that surrounds all charged particles and pulls on them all.

Before the dielectric breaks down, a parallel plate capacitor can only hold a certain amount of energy. It can be stated as follows: The parallel plate capacitor is a device that uses two parallel plates connected across a battery to create an electric field between them.

A nonmetallic component of a circuit is made in touch with using an electrode, an electrical conductor. Depending on the type of battery, electrodes are a crucial component that can be made of a range of materials.

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Answer:c

Explanation:

It is not possible for a particle with rest mass to travel at the speed of light in the laboratory frame. According to the theory of relativity, the speed of light is the maximum speed that any particle with mass can reach, and particles without mass (such as photons) always travel at the speed of light. Therefore, the question is not well-defined and cannot be answered.

According to the laws of physics, a particle with a non-zero rest mass cannot reach the speed of light. As a particle approaches the speed of light, its relativistic mass increases, and it would require infinite energy to accelerate it to the speed of light. Therefore, if a particle is observed to be traveling at the speed of light in the laboratory frame, it must be a massless particle like a photon. In this case, the rest mass (m) of the particle would be 0 MeV/c².

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Answer:

Yes, gravitational force is everywhere. Even if you don't move or move, or wherever you are, there is gravitational force.

Answer:

\(a = 4 \frac{m}{s {}^{2} } \)

Explanation:

u for velocity

t for time

a for acceleration

\(u = a \times t \\ 20 = a \times 5 \\ a = \frac{20}{5} \\ a = 4\)

That's it! Hope I helped!

The magnitude of the electric field at the location of the test charge is  15020 N C-1 or V m-1

We have to use F = E q

Given F = 0.751 N, q = 5*10-5 C

So required E = F /q = 0.751/5*10-5

The electric field at the location E = 15020 N C-1 or V m-1

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Answer:

22500 Ns

Explanation:

Given,

Mass ( m ) = 1500 kg

Velocity ( v ) = 15 m/s

Formula : -

Impulse = mv

Impulse

= 1500 x 15

= 22500 Ns

Therefore,

22500 Ns is the impulse experienced by the car.

Note : -

Ns is the unit of impulse.

1) Workdone = -7.5 kJ

2) Energy = 23 kJ

The number of moles of the ideal gas, n = 3 moles

Temperature, T = 273K

Let the old volume be V₁

Let the new volume be V₂

The new volume is three times as large as the old volume

That is, V₂ = 3V₁

The gas constant, R = 8.314

1) The workdone in the gas

The workdone in expanding the gas is given by the formula:

Substitute the values for this parameters into the formula above:

2) The energy required for a piston to compress the gas back to its original volume with an efficiency of 32%

Since the piston is compressing the gas, a positive work is done on the system. Therefore, Energy = 23.4 kJ

Energy = 23 kJ (to the nearest whole number)

Given

d: diameter

d = 41 cm

We need radius information so we will calculate it:

r: radius

r = d/2

r = 41/2

r = 20.5 cm

Rotating speed

w = 242 rpm

Procedure

At a distance r from the center of the rotation, a point on the object has a linear speed equal to the angular speed multiplied by the distance r. The units of linear speed are meters per second, m/s.

But before using the formula we need to have all the units in the same system. So we need to go from rpm to rad/s and from cm to m

Now we can calculate the linear velocity of the belt.

Answer

The linear velocity of the belt would be 5.2 m/s.

Answer:

true

Explanation:

Series resistors are additive

r1 + r2 + r3 = r total    the total will always be greater than any one of the parts