help with the greenhouse effect

Answer:

Explanation:

To solve for the mass of the football player, we can use the conservation of momentum principle, which states that the total momentum before a collision is equal to the total momentum after the collision. Assuming the collision is perfectly elastic, we have:

m1 * v1 + m2 * v2 = m1 * v1' + m2 * v2'

where m1 is the mass of the football player, v1 is the initial velocity of the football player, m2 is the mass of the referee, v2 is the initial velocity of the referee, v1' is the final velocity of the football player, and v2' is the final velocity of the referee.

Since the referee is at rest before the collision, we can set v2 = 0. Plugging in the given values, we get:

m1 * 8 + m2 * 0 = m1 * (-8) + m2 * 5

Expanding and solving for m1:

8m1 = -8m1 + 80

16m1 = 80

m1 = 5 kg

So, the mass of the football player is 5 kg.

Answer:

Explanation: =− And   ..=. −=.  = =.  ( .. . )    ( . ..)   =. Therefore   = .=

The amount that the valve is open is reflected by the resistance in the faucet. The diameter of the opening* in the wire determines its resistance.

Work is the result of a force creating a displacement. The length of time that this force exerts to generate the displacement has nothing to do with work.

The pace of the process can vary from being completed quickly to taking a while. A rock climber, for instance, takes an unusually lengthy time to raise her body a few meters up the cliff's edge.

Power= I2R, 225 is the power. The amount that the valve is open is reflected by the resistance in the faucet. The diameter of the opening* in the wire determines its resistance.

Therefore, The amount that the valve is open is reflected by the resistance in the faucet. The diameter of the opening* in the wire determines its resistance.

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Answer:

pv=nrt

Explanation:

pv=nrt

The planet that a Martian is on is Earth.

The formula to calculate the period from a simple pendulum

T = 2π × √(L ÷ g)

T ÷ 2π = √(L ÷ g)

(T ÷ 2π)² = L ÷ g

T² ÷ 4π² = L ÷ g

L = (T² × g) ÷ 4π²

Compare from pendulum on Mars and another planet

L₁ = L₂

(T₁² × g₁) ÷ 4π² = (T₂² × g₂) ÷ 4π²

T₁² × g₁ = T₂² × g₂

1.5² × 0.38g = 0.92² × g₂

2.25 × 0.38g = 0.8464 × g₂

0.855g = 0.8464 × g₂

g₂ = 0.855g ÷ 0.8464

g₂ = 1.0101g

g₂ = 1.0101 × 9.8

g₂ = 9.89

The other planet is Earth.

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The magnitude of the sum A + B + C is 5

The term "vector" is used colloquially to describe constituents of particular vector spaces or some quantities that cannot be described by a single integer.

How to solve for the quantity

A = 15J + 20J

B= -20J

C= -10J

S= A + B + C = 15J + 20J -20J -10J

S = 5J

Therefore, S= 5

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The required circuit can be constructed by  arranging  resistor 1 (60 Ω), resistor 3 (20Ω) in one arm and resistor 2 (30 Ω) and open switch in other arm.

A resistor is an electrical component that controls or restricts how much electrical current can pass across a circuit in an electronic device. A specified voltage can be supplied via resistors to an active device like a transistor.

When the circuit be constructed by  arranging  resistor 1 (60 Ω), resistor 3 (20Ω) in one arm and resistor 2 (30 Ω) and open switch in other arm, the equivalent resistor is = (60 + 20) Ω = 80 Ω.

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The net electric force on particle 2 is -21.7 N.

The net force on particle q₂ is determined by applying Coulomb's law of electrostatic force.

F = kq₁q₂ / r²

where;

The force  between particle 2 and particle 1 is calculated as;

F = -( 9 x 10⁹ x 8 x 10⁻⁶ x 3.5 x 10⁻⁶ ) / (0.1)²

F = - 25.2 N

The force  between particle 2 and particle 3 is calculated as;

F = ( 9 x 10⁹ x 2.5 x 10⁻⁶ x 3.5 x 10⁻⁶ ) / (0.15)²

F = 3.5 N

The net force on particle 2 = 3.5 N - 25.2 N = -21.7 N

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(a) Relative to the ground, the gravitational potential energy of the orange on the branch is 4.29 J and on ground is 0 J.

(b) ) Relative to the branch, the gravitational potential energy of the orange on the branch is 0 J and on ground is 4.29 J.

(c) The change in potential energy relative to the ground is -4.29 J and relative to the branch is 0 J.

Relative to the ground, the gravitational potential energy of the orange on the branch is calculated as follows;

P.E = mgh

where;

P.E = 0.125 kg x 9.8 m/s² x 3.5

P.E = 4.29 J

The gravitational potential energy of the orange on the ground is calculated as follows;

P.E = mgh

P.E = m x g x 0 m

P.E = 0 J

The change in potential energy = final potential energy - initial potential energy

change in potential energy = 0 J - 4.29 J = - 4.29 J

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Explanation:

To find the final velocity and distance traveled during the acceleration, we can use the equations of motion:

v = u + at, where v is the final velocity, u is the initial velocity (30 m/s), a is the acceleration, and t is the time (6 s)

v = 30 m/s + a x 6 s

d = ut + 0.5at^2, where d is the distance traveled

d = 30 m/s x 6 s + 0.5 x a x (6 s)^2

Since acceleration (a) is not given, we can use one equation to solve for it and substitute into the other:

v = 30 m/s + a x 6 s

a = (v - 30 m/s) / 6 s

Substitute this into the second equation to find the distance:

d = 30 m/s x 6 s + 0.5 x (v - 30 m/s) / 6 s x (6 s)^2

So, we can find the final velocity and distance traveled once the acceleration (a) is known.

Answer:

scarcer

Explanation:

Silver is more costly than iron because it is scarcer as it is found only in some areas of the country... it's a rare element hence it is scarcer and more expensive..

Answer:

E+V= Weird

Explanation:

If you subtract "e" repeating from E and V you'll get the equation above.

The bowling ball requires more force to roll than the basketball. This is because the bowling ball has more mass than the basketball, and therefore more resistance to motion.

Force is related to mass because the force required to move an object is proportional to its mass. This relationship is described by Newton's second law of motion, which states that the acceleration of an object is directly proportional to the force applied and inversely proportional to its mass. In mathematical form, this relationship is expressed as:

F = ma

The amount of force required to move an object is proportional to its mass and its velocity. Since the bowling ball has more mass, it requires more force to be applied in order to get it moving, and to keep it moving at a constant velocity. Additionally, because the bowling ball is inside a white box, its rolling friction is higher, further increasing the amount of force required to move it.

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According to the ideal gas law, 0.588 moles of NH3 gas in a 15.0 L container must be heated to a temperature of 1088.85 K or 815.85°C in order for it to impose a pressure of 3.50 atm.

Real gases are simplified into ideal gases to make them easier to understand. It is believed to be made up of point particles that move randomly and independently.

Additionally, it is believed that perfect gas molecules by themselves have no volume.

Three state variables—absolute pressure (P), volume (V), and absolute temperature—define an ideal gas (T). The ideal gas law, an equation that relates them, is based on their relationship.

Therefore, According to the ideal gas law, 0.588 moles of NH3 gas in a 15.0 L container must be heated to a temperature of 1088.85 K or 815.85°C in order for it to impose a pressure of 3.50 atm.

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Answer:

it's there to reduce movement of the passenger if hit.

Explanation:

it's quite simple really, its there because if it wasn't the person would've gone flying through the front window screen.

The total resistance of the circuit is 3 ohms.

The total current in the circuit is 4 A.

The power of the circuit is 48 W.

What is the total resistance of the circuit?

The total resistance of the circuit is calculated as follows;

1 / Rt = 1/R1 + 1/R2 + 1 / R3

1/Rt = 1/6 + 1/12 + 1/12

1/Rt = 0.3333

Rt = 3 ohms

The total current in the circuit is calculated as follows;

I = V / Rt

I = ( 12 ) / ( 3 )

I = 4 A

The power of the circuit is calculated as follows;

P = IV

P = ( 4 x 12 )

P = 48 W

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Answer: We can use Newton's second law, which states that the net force acting on an object is equal to its mass multiplied by acceleration.

Let's call the acceleration of the system "a". Then the net force acting on m1 is T1 - T2 + m1 * a = 0.

The net force acting on m2 is T2 - m2 * a = 0.

And the net force acting on m3 is T2 + m3 * a = 0.

Solving these three equations, we get:

T1 = T2 + m2 * a = 60.0 N + 8.00 kg * a

m1 * a = -T2 + 60.0 N + m1 * a

m3 * a = T2 - 60.0 N + m3 * a

Substituting T2 = 60.0 N, we get:

T1 = 60.0 N + 8.00 kg * a

m1 * a = -60.0 N + 10.0 kg * a

m3 * a = 60.0 N + 12.0 kg * a

Solving for the acceleration, we get:

a = (60.0 N + 8.00 kg * a) / (10.0 kg - 8.00 kg) = (60.0 N + 8.00 kg * a) / 2.0 kg

a = (60.0 N + 8.00 kg * a) / 2.0 kg = (60.0 N) / 2.0 kg + (8.00 kg * a) / 2.0 kg

a * 2.0 kg = 60.0 N + 8.00 kg * a

a = 60.0 N / 2.0 kg + 8.00 kg * a / 2.0 kg

a * 2.0 kg - 8.00 kg * a = 60.0 N

a * 10.0 kg = 60.0 N + 8.00 kg * a

a = 60.0 N / 10.0 kg = 6.0 m/s²

Finally, we can use T1 = 60.0 N + 8.00 kg * a to find T1:

T1 = 60.0 N + 8.00 kg * 6.0 m/s² = 60.0 N + 48.0 N = 108.0 N

So the acceleration of the masses is 6.0 m/s², and the tension T1 is 108.0 N.

Explanation:

The two configurations in a vertical plane may be:

Force is a push or pull upon an object resulting from the object's interaction with another object. Forces can cause an object to accelerate or change its velocity. Forces have both magnitude and direction and are measured in units of Newtons (N) in the SI system. Some common examples of forces include gravity, friction, tension, and electromagnetic forces.

Since the three forces are in equilibrium, their sum must be zero. Hence, we have:

12 N + 15 N + 20 N = 0

The 12 N force is directed horizontally to the right, so the other two forces must sum to zero vertically. They can either both be directed upwards or both be directed downwards.

If both forces are directed upwards, then the sum of their magnitudes must equal -12 N vertically:

15 N + 20 N = -12 N

If both forces are directed downwards, then their sum must equal 12 N vertically:

15 N + 20 N = 12 N

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The minimum deceleration required to stop the car in 35 meters is 40000 m/s^2.

Deceleration is defined as  the decrease in speed as the body moves away from the starting point.

The minimum deceleration required can be calculated using the equation of motion:

d = v^2 / (2 * a)

where d is the distance, v is the initial velocity, and a is the acceleration.

Rearranging the equation to solve for a:

a = v^2 / (2 * d) = (3500 m/s)^2 / (2 * 35 m) = 40000 m/s^2

In conclusion, , the minimum deceleration required to stop the car in 35 meters is 40000 m/s^2.

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1. The percentage of incoming solar radiation which reflected and scattered back into space is 30%

2. Yes, solar radiation that is reflected and scattered heat the objects it strikes does.

3. The percentage of incoming solar radiation is 19% absorbed by clouds and gasses in the atmosphere.

4. 51% percentage of incoming solar radiation passes through the atmosphere and is absorbed by the Earth's surface.

5. No. The most transmit or absorb is Earth's surface.

In a climate system, all processes start from radiant energy coming from the sun onto the surface of the atmosphere (air). Furthermore, this energy is forwarded to the earth's surface where along the way some of it is reflected back into space. Part of it is absorbed by the air and the rest is transmitted to the earth's surface.

Radiation that can reach the earth's surface can eventually heat the earth's surface, evaporate water, melt snow and heat the ground. The changed energy is also sent back into space in the form of radiation.

Variations in the amount of radiation received by the earth's surface and variations in the interaction between the earth and the atmosphere can cause spatial and time variations of energy changes which ultimately determine the climate of a place.

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Answer:

Explanation:

fbfgdgtfg

Answer:

Explanation:

To determine the velocity of the 35.0 kg car before the collision, we can use the principle of conservation of momentum. The total momentum of the system before the collision is equal to the total momentum after the collision.

Momentum before collision = Momentum after collision

m1v1 + m2v2 = (m1 + m2)vf

where:

m1 = 25.0 kg (mass of first car)

m2 = 35.0 kg (mass of second car)

v1 = velocity of first car before collision

v2 = velocity of second car before collision

vf = final velocity of the combined cars after collision

Since the first car slows down to 1.50 m/s to the right after the collision, and the second car moves 4.50 m/s to the right, we can write:

vf = (v1 + v2) / 2 = (1.50 + 4.50) / 2 = 3.00 m/s

Substituting the given values into the equation for conservation of momentum, we have:

25.0 kg x 5.00 m/s + m2 x v2 = 60.0 kg x 3.00 m/s

Solving for v2, the velocity of the second car before the collision, we get:

v2 = (60.0 kg x 3.00 m/s - 25.0 kg x 5.00 m/s) / 35.0 kg = 2.14 m/s

So the velocity of the 35.0 kg car before the collision was 2.14 m/s.

Light has been traveling from this object before it arrives on earth for 1,500 light-years.

Why is Orion Nebula so bright?

The Orion Nebula, a colourful cloud of gas and cosmic dust, is a star-forming region. The nebula has "a rather brilliant apparent brightness because it is the nearest massive star-forming zone to Earth.

Why was Orion given that name?

The ancient Egyptians believed that the stars in the belt represented the spot where the spirit of the god Osiris would ultimately dwell. To the Arabs, the constellation appeared to be enormous. The mythological Greek hunter Orion is the subject of the constellation's name.

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The final speed of the apple would be 26.9 m/s.

Given is that your friend shoots an 80g arrow through a 100g apple balanced on William tells head. The arrow has a speed of 50m/s before passing through the apple and 40m/s after.

In a elastic collision, the total kinetic energy of the system remains the same. So, we can write -

[tex]$E_{1i} +E_{2i} = E_{1f} +E_{2f}[/tex]                                            .... Eq{ 1 }

We can write as -

{1/2 x 80 x 2500} + 0 = {1/2 x 80 x 1600} + {1/2 x 100 x v²}

{1/2 x 100 x v²} = {40 x 2500} - {40 x 1600}

50v² = 40 x 900

v² = 720

v = √720

v = 26.9 m/s

Therefore, the final speed of the apple would be 26.9 m/s.

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The expression of time dilation is: Δt' = Δt/√(1 -(v/c)²)

Think of two precise clocks that are identical, one stationary and the other travelling nearly at the speed of light. The moving clock measures a shorter amount of time than the stationary clock because of the effects of special relativity.

The time of the moving clock is said to be the "right time" if the observer is moving in the same frame of reference as the clock. The time, however, that a stationary observer records during the same time interval is extended or "dilated."

The expression of time dilation is:

Δt' = Δt/√(1 -(v/c)²)

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The examples of electric insulators are -

glass jar, rubber ball, tree, puddle.

Electric insulators are the materials that does not conduct electricity through them.

Given are the examples of electric insulators.

The examples of electric insulators are -

glass jar, rubber ball, tree, puddle

Therefore, the examples of electric insulators are -

glass jar, rubber ball, tree, puddle.

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The electric field strength between A and B 90x20=1800.

The physical field that surrounds electrically charged particles and exerts force on all other charged particles in the field, either attracting or repelling them, is known as an electric field (also known as an E-field. It can also refer to a system of charged particles' physical field.  

Electric charges and time-varying electric currents are the building blocks of electric fields. The electromagnetic field, one of the four fundamental interactions (also known as forces) of nature, manifests itself in both electric and magnetic fields.

Electrical technology makes use of electric fields, which are significant in many branches of physics. For instance, in atomic physics and chemistry, the electric field acts as an attractive force to hold atoms' atomic nuclei and electrons together.

Therefore, The electric field strength between A and B 90x20=1800.

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The time of motion of the stone is 8,5 seconds.

The final velocity when the stone hits the sea is 113.3 m/s.

The time of motion of the stone is calculated by applying the following formula.

h = vt - ¹/₂gt²

where;

-100 = 30t - ¹/₂(9.8)t²

-100 = 30t - 4.9t²

4.9t² - 30t - 100 = 0

solve using formula method;

t = 8.5 seconds

The final velocity of the stone is calculated as follows;

v = u + gt

v = 30 + ( 9.8 x 8.5 )

v = 113.3 m/s

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When the ground is pulled away, the charge that the two objects have is that Object A is now negatively charged and Object B is still positively charged.

After touching object A to the ground, object A will have zero charges as it is an insulator and the ground is neutral, so no charges will flow.

Object B still has a positive charge as it is a conductor, and since object A is not connected to it anymore, there will be no transfer of charges between them.

Recall that an insulator is any property that does NOT allow electric charges to pass through them.

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(1) The instantaneous velocities are 4.2 km/h south and 4.1 km/h west

(2) The average velocity of Joe is 5.9 km/h southwest.

The instantaneous velocities are the velocities of Joe at any given time period and it is calculated as follows;

v (1 ) = 4.2 km/h south

v ( 2 ) = 4.1 km/h west

The average velocity of Joe is calculated from the ratio of the total displacement to total time of motion.

v (avg) = ( total displacement ) / ( total time of motion )

v (avg) = 5.9 km/h southwest

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