what is the cause of acid rain?

Answer:

resultant force = 14 N  ( East direction)

Explanation:

A = \(\sqrt{(4*7)^2 + (4*7)^2}\)

A = 39.6 N

B = 4 * 7

B = 28 N

C = 2 * 7

C = 14 N

∑ y forces = Ay - B = (4*7) - 28 = 0

∑ x forces = Ax - C = (4*7) - 14 = 14 N

so the resultant force = 14 N  ( East direction)

Answer:

resultant = 14 N to the right

Explanation:

A→+B→+C→

adding all forces acting on x

and

adding all forces acting on y

A = sqrt(4*7)^2 + (4*7)^2 = 39.6

B = 4 * 7 = 28

C = 2 * 7 = 14

forces acting on x = (4*7) - 28 = 0

forces acting on y = (4*7) - 14 = 14 N

so the resultant = 14 N to the right

Answer:

20 Yards

Explanation:

|---20----|

|            |

| 50       |50

|---D--->|

Start      End

Total displacement(D)  20 yards (East).

Answer:

I'm not %100 sure but it might be d

Explanation:

Answer:

1.605// would be the angular resolution you would need to see the sun and Jupiter.

Explanation:

The Jupiter-Sun distance is 778.3 × 106 km (Appendix E). Therefore, θ = 206 265// × 778.3 × 106 km 1014 km = 1.605//. We would need a telescope with an angular resolution of at least 1.605//.

Answer:

The force of the radiation on the surface is 3.33 x 10⁻¹⁰ N

Explanation:

Given;

intensity of light, I = 1kw/m² = 1000 W/m²

area of the surface, A = 1 cm² = 1 x 10⁻⁴ m²

Since the light is completely absorbed, the force of the radiation is given by;

F = P/c

where;

c is the speed of light = 3 x 10⁸ m/s

But P = IA

F = IA /c

F = (1000 X 1 X 10⁻⁴) / 3 x 10⁸

F = 3.33 x 10⁻¹⁰ N

Therefore, the force of the radiation on the surface is 3.33 x 10⁻¹⁰ N

The force of radiation will be "3.33 × 10⁻¹⁰ N"

According to the question,

Intensity of force, I = 1 kW/m² or,

                               = 1000 W/m²

Area of surface, A = 1 cm² or,

                              = 1 × 10⁻⁴ m²  

Speed of light, c = 3 × 10³ m/s

As we know the relation,

→ F = \(\frac{P}{c}\)

or,

  P = IA

or,

  F = \(\frac{IA}{c}\)

By substituting the values, we get

     = \(\frac{1000\times 1\times 10^{-4}}{3\times 10^3}\)

     = 3.33 × 10⁻¹⁰ N

Thus the response above is correct.

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Answer:

a = 0.273 m/s²

Explanation:

I would assume that the rider starts at 0m/s.

a = average acceleration

v = final velocity = 3 m/s

v0 = initial velocity = 0 m/s

t = time = 11 s

a = (v-v0)/t

a = (3m/s - 0m/s) / 11s

a = 0.273 m/s²

I am not sure how many decimals I should round it to, so I just gave three. If your teacher has instructions on that, do so accordingly.

The series circuit has components connected in a sequence, while the parallel circuit has components connected in different branches. If bulb B2 is replaced with a wire in the series circuit, bulb B1 will not light up, while in a parallel circuit, it will still light up.

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Answer:

Astrophysicists study the physics of the universe. “Astrophysics” is a term that is often used interchangeably with “astronomy.” Atomic, molecular, and optical physicists study atoms, simple molecules, electrons, and light, as well as the interactions among them

Explanation:

The lengths of the other bars on the set of they have frequencies of 220 Hz, 264 Hz, 330 Hz, 396 Hz, and 440 Hz would be 27.0 cm, 22.7 cm, 18.2 cm, 15.0 cm,  and 13.6 cm. respectively.

The fundamental frequency of a vibrating bar is inversely proportional to its length, so we can use the following formula to calculate the length of each bar in the set:

L = L₀ × f₀ / f

where L₀ is the length of the longest bar (30.0 cm), f₀ is its fundamental frequency (198 Hz), f is the frequency of the bar we want to find, and L is the length of that bar.

(a) For a frequency of 220 Hz:

L = L₀ × f₀ / f = 30.0 cm × 198 Hz / 220 Hz ≈ 27.0 cm

So the length of the bar that produces a frequency of 220 Hz is approximately 27.0 cm.

(b) For a frequency of 264 Hz:

L = L₀ × f₀ / f = 30.0 cm × 198 Hz / 264 Hz ≈ 22.7 cm

So the length of the bar that produces a frequency of 264 Hz is approximately 22.7 cm.

(c) For a frequency of 330 Hz:

L = L₀ × f₀ / f = 30.0 cm × 198 Hz / 330 Hz ≈ 18.2 cm

(d) For a frequency of 396 Hz:

L = L₀ × f₀ / f = 30.0 cm × 198 Hz / 396 Hz ≈ 15.0 cm

(e) For a frequency of 440 Hz:

L = L₀ × f₀ / f = 30.0 cm × 198 Hz / 440 Hz ≈ 13.6 cm

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Answer:

jjhbkvjuhigjgyihbgtimnvyuoibc

Answer:

1.8 × 10^29 kg

Explanation:

The computation of the total mass is shown below;

As we know that

The total mass of the sun is

= 2 × 10^30 kg

Since 70% of the mass involves hydrogen gas, so total mass of the hydrogen gas is

= 70% × 2 × 10^30 kg

= 1.4 × 10^30 kg

And, 13% available for fusion, so the hydrogen gas mass is

= 13% × 1.4 × 10^30 kg

= 1.8 × 10^29 kg

Answer:

the floor deforms very slightly under your weight

Explanation:

A trampoline is made up of a large piece of strong cloth held by springs on which you jump up and down as a sport. So, If you stand on a trampoline, it depresses under your weight.  However, the floor does not deform under your weight as it is too stiff.

Therefore,

when you stand on a hard stone floor, the floor deforms very slightly under your weight.

Answer:

66w

Explanation:

p=w/t

p=660/10

p=66

prolly a bad explanation but hope it helps...

The nucleons have less mass, because matter is converted into binding energy. Option D is correct.

During the process of combining a neutron and a proton to form a nucleus, a small amount of mass is converted into binding energy. This is due to the strong nuclear force that holds the nucleus together. The mass of the nucleus is slightly less than the sum of the masses of the individual nucleons, and the difference in mass is referred to as the mass defect.

This mass defect is related to the binding energy of the nucleus through Einstein's famous equation E=mc², where E is energy, m is mass, and c is the speed of light. The mass defect represents the amount of mass that is converted into binding energy to hold the nucleus together. Option D is correct.

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Answer:

25.9atm

Explanation:

Answer: my grandfather was a marine so he kept me in check

25.8 atm

Explanation:

Total pressure is:

P = Patm + ρgh

where Patm is the atmosphere pressure,

ρ is the fluid density,

g is acceleration due to gravity,

and h is the depth of the fluid.

P = (1 atm) + (1025 kg/m³) (9.81 m/s²) (250 m) (9.8692×10⁻⁶ atm/Pa)

P = 1 atm + 24.8 atm

P = 25.8 atm

If a Catatlyst was added the values affected would be 2, 3, 4

A catalyst is a substance that speeds up the rate of a chemical reaction without undergoing any permanent change itself. It facilitates the reaction by providing an alternative pathway with lower activation energy, which allows the reaction to occur more readily.

Catalysts work by interacting with the reactant molecules and weakening the existing bonds or creating new ones, making it easier for the reaction to proceed.

Catalysts are typically specific to certain reactions and can be used in small amounts relative to the reactants. They play a crucial role in many industrial processes and are essential for efficient chemical transformations.

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Answer: A flower pot falling

Explanation:

The car on the curve (its direction is changing) and the falling flower pot (its speed is changing) are both undergoing acceleration.

In a simple machine the direction changes by using the pulley. By applying the force on the pulley, by pushing down and the object moves up.

The simple machine allows to change the direction is a pulley. The pulley machine acts as a direction changer and is also used to change the direction of the force. When the wheel rotates, the cord can move in either direction.

The pulley has a wheel and hook. By attaching the hook to the cord, the wheel rotates making the object move up or down much easier when the force is applied to the pulley. These machines use pivot points to balance.

Hence, the simple machine called a pulley, is used to change the direction of force and makes the object moves up.

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Answer:

The correct answer is "4.443 sec".

Explanation:

Given:

Mass of child,

= 34 kg

Mass of swing,

= 18 kg

Length,

= 4.9 m

The time period of pendulum will be:

T = \(2 \pi \sqrt{4g}\)

  = \(2 \pi \sqrt{\frac{4.9}{9.8} }\)

  = \(4.443 \ sec\)  

Answer:

The time taken to back and forth is 4.4 s .

Explanation:

Length, L = 4.9 m

let the time period is T.

Acceleration due to gravity, g = 9.8 m/s^2

Use the formula of time period

\(T = 2 \pi\sqrt{L}{g}\\\\T = 2 \times 3.14\sqrt{4.9}{9.8}\\\\T = 4.4 s\)

The dragonfly must generate approximately 4.8 × 10^-4 Joules of energy to spin itself at a rate of 1100 rpm.

Start by converting the rotational speed from rpm (revolutions per minute) to rad/s (radians per second). Since 1 revolution is equal to 2π radians, we can use the conversion factor:

Angular speed (ω) = (1100 rpm) × (2π rad/1 min) × (1 min/60 s)

ω ≈ 115.28 rad/s

The moment of inertia (I) is given as 2.0 × 10^-7 kg⋅m².

Use the formula for rotational kinetic energy:

Rotational Kinetic Energy (KE_rot) = (1/2) I ω²

Substituting the given values:

KE_rot = (1/2) × (2.0 × 10^-7 kg⋅m²) × (115.28 rad/s)²

Calculate the value inside the parentheses:

KE_rot ≈ (1/2) × (2.0 × 10^-7 kg⋅m²) × (13274.28 rad²/s²)

KE_rot ≈ 1.331 × 10^-3 J

Round the result to the proper number of significant figures, which in this case is three, as indicated by the given moment of inertia.

KE_rot ≈ 4.8 × 10^-4 J

Therefore, the dragonfly must generate approximately 4.8 × 10^-4 Joules of energy to spin itself at a rate of 1100 rpm.

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From the question;

1) It takes 15.75 years to decrease to 1/8

2) It takes 8.36 years to decrease to 1/3

Half-life is the length of time it takes for a chemical to degrade or go through a particular process. It frequently refers to the length of time it takes for half of a radioactive substance to decay into a stable form in the context of radioactive decay.

We know that;

\(N/No = (1/2)^t/t1/2\)

No = initial amount

N = amount at time t

t = Time taken

t1/2 = half life

\(1/8 = (1/2)^t/5.252^-3 = 2^-t/5.25\)

t = 15.75 years

Again;

\(1/3 = (1/2)^t/5.25\)

ln0.33 = t/5.25ln0.5

t = ln0.33/ln0.5 * 5.25

t = 8.36 years

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The average speed of the baseball is  option  a. 40 m/s .

To calculate the average speed of the baseball, we use the formula:

Average Speed = Distance / Time

Given:

Distance = 18.4 m

Time = 0.46 s

Plugging in the values, we have:

Average Speed = 18.4 m / 0.46 s = 40 m/s

Therefore, the average speed of the baseball is 40 m/s.

Option a, 40 m/s, is the correct answer. This means that the baseball traveled an average distance of 40 meters per second from the pitcher's mound to home plate.

Average speed is a scalar quantity that represents the total distance traveled divided by the total time taken. It gives us an idea of how fast an object is moving on average over a given distance.

In this case, the baseball covered a distance of 18.4 meters in a time of 0.46 seconds. Dividing the distance by the time gives us the average speed of 40 m/s.

It's important to note that average speed is a measure of the overall rate of motion and does not provide information about the direction of motion. Therefore, negative values such as option b (-40 m/s) or extremely small values such as option c (0.03 m/s) are not appropriate in this context.

Option d (8.5 m/s) is also incorrect as it does not match the calculated average speed of 40 m/s.

Therefore, the correct answer is option a, 40 m/s, as it accurately represents the average speed of the baseball.

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Answer:

The correct answer is c) allow you to use less force to do the same amount of work.

Answer: μ = 0.8885

Explanation: Force due to friction is calculated as: \(F_{f} = \mu.N\)

At an inclined plane, normal force (N) is: N = mgcosθ, in which θ=32.51.

Power associated with work done by friction is \(P=F_{f}.x\). The variable x is displacement the object "spent its energy".

Power associated with work done by gravitational force is P = mghcosθ, where h is height.

The decline forms with horizontal plane a triangle as draw in the picture.

To determine force due to friction:

\(F_{f}.x=mghcos(\theta)\)

\(F_{f}=\frac{mghcos(\theta)}{x}\)

Replacing force:

\(\frac{m.g.h.cos(\theta)}{x} = \mu.m.g.cos(\theta)\)

\(\mu=\frac{h}{x}\)

Calculating h using trigonometric relations:

\(sin(32.51) = \frac{h}{1}\)

h = sin(32.51)

Coefficient of Kinetic friction is

\(\mu=\frac{sin(32.51)}{1}\)

μ = 0.8885

For these conditions, coefficient of kinetic friction is μ = 0.8885.

ANSWER

False.

EXPLANATION

Nuclear binding energy is the energy that is required to split the nucleus (of an atom) into nucleons: protons and neutrons.

The binding energy of a nucleus is always positive because nuclei require energy to separate them and it is impossible for nuclei to gain energy by being separated.

Therefore, the answer is false.

Given data:

Length;

Pitch;

The velocity ratio is given as,

Substituting all known values,

Therefore, the velocity ratio of a screw jack is 40π or 125.71.