Physical science includes
chemistry.
life science.
physics.
two of the above.

Answer:

30 m\ s Ans .....

Explanation:

Data:

f = 10 Hz

w = 3 m

v = ?

Formula:

v = fw

Solution:

v = ( 10)(3)

v = 30 m\ s Ans ........

Answer:

I think it's b and I'm sorry if it's wrong

Two masses oscillating together with each of their time period as ,'T'

Option B

we know that,

The time period of a mass 'm' on a spring of spring constant 'k' can be strategize by the following equation :

\( \huge \rightarrow \: T \: = 2π \sqrt{ \frac{m}{k} } \)

According to the question,

so,

The new time period would be

\( \huge \rightarrow \: T ' \: = 2π \sqrt{ \frac{2m}{2k} } \)

\( \huge \rightarrow \: T ' \: = 2π \sqrt{ \frac{m}{k} } \)

\( \huge \rightarrow \: T ' \: = T\)

Hence ,option B is correct ✓

Answer:

Meteorites,Asteroids,Most moons,earth,sun,the milky way,cluster of galaxies

Explanation:

Meteorites, Asteroids, Most moons, earth, the sun, the milky way, and a cluster of galaxies.

A solar system is a star and all of its planets, asteroids, comets, and other bodies. It is significantly bigger than a star.

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxies, literally "milky", a reference to the Milky Way.

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Answer:

Roughly 4.5 billion years

The fact that it took billions of years for human intelligence to evolve on Earth suggests that intelligence might be relatively uncommon. This is because it implies that the emergence of intelligence is a slow and difficult process that requires a long series of improbable events, such as the development of complex multicellular life, the evolution of a large brain, and the development of sophisticated cognitive abilities.

The fact that human evolution was influenced by random events like the K-T impact further suggests that the emergence of intelligence is not a foregone conclusion, and that the history of life on Earth is characterized by contingency and chance.

However, it is also worth noting that these arguments are based on a sample size of one, and that we have no direct evidence of the likelihood of intelligence arising on other planets with life. It is possible that the emergence of intelligence is a relatively common occurrence in the universe, or that it is exceedingly rare. Without more data, it is difficult to say for certain either way.

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Answer:

Descriptive investigation, comparative investigation, and experimental investigation.

Explanation:

Scientists use three types of investigations to research and develop explanations for events in the nature: descriptive investigation, comparative investigation, and experimental investigation.

The amount of work required to haul up the rope is 30.72 Nm. This can be calculated by multiplying the weight of the rope (0.624 N/m) by the length of the rope (50 m).

The work required to haul up the 50 m length of rope weighing 0.624 N/m is 30.72 Nm. This can be found by using the equation Work = Force x Distance.

The force is the weight of the rope, which is 0.624 N/m, and the distance is the length of the rope, which is 50 m. When multiplied together, the resulting work is 30.72 Nm.

Hauling the rope up will therefore require an expenditure of energy equal to 30.72 Nm.

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Answer:

just a example

Explanation:

Elena always rides her bicycle at a speed of 15 miles per hour. On Sunday, she goes on a 24 mile bike ride. How many hours does this ride take?

Solution

The speed of 15 miles per hour is a rate. The key words that tell us that this is a rate are "speed" and "miles per hour". We can write:

r = 15

Next, 24 miles is a distance. We have:

d = 24

Now use the d=rt equation to get

24 = 15t

To solve this, divide both sides by 15 to get

t = 24/15

Both are divisible by 3, so this fraction reduces to

t = 8/5 = 1.6

Elena's ride takes 1.6 hours.

a) the acceleration of the car = -2.75 m/s

b) d = 198 meters. Therefore, the squirrel would survive.

c) the car moving at 100 meters with a speed of 23.22m/s

What is acceleration ?

acceleration: the rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.

Use the kinematic equation to solve for the acceleration:

v = u +at

v = final velocity

u = initial velocity

a = acceleration

t = time

In this instance, the final velocity is 0 because he comes to a stop. We can solve for the acceleration by plugging in the given values:

0 = 33 + (12)a

0 = 33 + 12a

-33 = 12a

-33 / 12 = a  --> a = -2.75 m/s²

b) Find the amount of distance necessary to stop. Use the formula:

v^2 = u^2 + 2ad

d = distance

Plug in the values:

0² = 33² + 2(-2.75 · d)

0 = 1089 - 5.5d

-1089 = -5.5d

d = 198 meters. Therefore, the squirrel would survive.

c)

Find the velocity at 100 meters by using the same formula as before:

v^2 = u^2 + 2ad

However, in this instance, we are solving for the final velocity. Plug in the given points to solve:

vf² = 33² + 2(-2.75 · 100)

vf² = 1089 + (-550)

vf² = 539

vf = √539

vf ≈ 23.22 m/s.

the car moving at 100 meters with a speed of 23.22m/s

a) the acceleration of the car = -2.75 m/s

b) d = 198 meters. Therefore, the squirrel would survive.

c) the car moving at 100 meters with a speed of 23.22m/s

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Answer:

The moon does not have weather to erode the evidence of asteroid impacts.

Answer:

\(\lambda\) = 40 cm

Explanation:

given data

string length = 30 cm

solution

we take here equation of length that is

L = \(n \times \frac{1}{4} \lambda\)     ...............1

so

total length will be here

\(L = \frac{\lambda}{2} + \frac{\lambda}{4}\\\)

\(L = \frac{3 \lambda }{4}\)

so \(\lambda\)  will be

\(\lambda = \frac{4L}{3}\\\lambda = \frac{4\times 30}{3}\)

\(\lambda\) = 40 cm

Answer:

1440÷12=120

Explanation:

because u have to divide the mitre with the 12 m

The angle of rotation for a regular hexagon based on a rotational symmetry is 60 degrees.

The interior angle of the regular hexagon below measures 60, and the hexagon has rotational symmetry.

The hexagon is rotated around the point of symmetry.

The point of symmetry for the hexagon is center of the hexagon.  

When the hexagon is rotated, transformation of rotation about a point takes place.

By property of rotation, about a particular point for a certain angle transforms the original image into an congruent image preserving shape, size and other properties

So, image will have the same angle as original.

Therefore, the angle of rotation for a regular hexagon based on a rotational symmetry is 60 degrees.

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Answer:

fffffff

Explanation:

B. Piron > Pwater > Pwax

Wax normally floats in water,it is less dense than water.

Iron is more dense than water, so it sinks.

Answer:

B.    P iron >  P water > P wax

Answer:

330 Hz

Explanation:

edg2020

The best estimate of the frequency Suzy hears after the car passes her is govern by doppler effect and it is 330 Hz.

Frequency is the number of occurrences of a repeating event per unit of time.

The Doppler effect is the change in frequency of a wave in relation to an observer who is moving relative to the wave source.

According to the Doppler Effect, the frequency observed by an observer decreases for source going away.

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The acceptable range of carbon dioxide in the flue gas during combustion efficiency measurements is typically between 6% and 12%.

Combustion efficiency is a measure of how effectively fuel is being burned in a combustion system, such as a furnace, boiler, or engine. It is important to monitor and optimize combustion efficiency to ensure efficient energy utilization and minimize harmful emissions. One key parameter that is measured during combustion efficiency testing is the carbon dioxide (CO2) content in the flue gas.

Carbon dioxide is a byproduct of complete combustion, and its presence in the flue gas indicates that the fuel is being burned efficiently. However, excessive levels of carbon dioxide can indicate incomplete combustion or poor fuel-air mixing, which can lead to energy waste and increased emissions of other pollutants. On the other hand, low levels of carbon dioxide can indicate excess air in the combustion process, which also reduces efficiency.

The acceptable range of carbon dioxide in the flue gas during combustion efficiency measurements is typically between 6% and 12%. This range ensures that the combustion process is efficient without excessive air or fuel wastage. It is important to note that the specific acceptable range may vary depending on the type of fuel being burned and the combustion system being used. Regular monitoring and adjustment of combustion parameters, including carbon dioxide levels, can help optimize combustion efficiency and reduce environmental impact.

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Answer:

1.454 m

Explanation:

From the question,

L₂ = L₁+α(T₂-T₁).................. Equation 1

Where L₂ = Final Length, L₁ = Initial Length, α = Coefficient of Linear expansion, T₁ = Initial Temperature, T₂ = final Temperature.

Given: L₁ = 1.5 m, α = 23×10⁻⁶ K⁻¹, T₁ = 200 °C, T₂ = -1800 °C

Substitute these values into equation 1

L₂ = 1.5+[23×10⁻⁶ ×( -1800-200)

L₂ = 1.5+(23×10⁻⁶×2000)

L₂ = 1.5+(-0.046)

L₂ = 1.5-0.046

L₂= 1.454 m.

Answer:

A) Vo = 137.34 [m/s]

B) Y = 961.38 [m]

C) y = 367.8[m] for t = 3 [s] and y = 470.88[m] for t = 4[s]

Explanation:

To solve this problem we must use the following equation of kinematics. We must keep in mind that the negative sign of the equation means that the acceleration of gravity acts in the opposite direction to the movement of the balloon.

A)

\(v_{f} =v_{o} -g*t\)

where:

Vf = final velocity = 0 (the maximum hang time, maximum elevation)

Vo = initial velocity [m/s]

g = gravity acceleration = 9.81 [m/s²]

t = time = 14 [s]

0 = Vo - (9,81*14)

Vo = 137.34 [m/s]

B)

Now we use the following equation.

\(y=y_{o}+v_{o} *t -(\frac{1}{2} )*g*t^{2}\)

where:

Yo = initial position = 0

Y = final position [m]

Vo = initial velocity = 137.34 [m/s]

Now replacing

Y = (137.34*14) - (0.5*9.81*14²)

Y = 961.38 [m]

C)

With the above equation, we can calculate the distances between t = 3 and t = 4 [s]

\(y=y_{o} +v_{o} *t - (1/2)*g*t^{2}\)

y = (137.34*3) - (0.5*9.81*3²)

y = 367.8[m] for t = 3 [s]

for t = 4[s]

y =  (137.34*4) - (0.5*9.81*4²)

y = 470.88[m]

Answer:

Neil Armstrong

Explanation:

Answer:

Neil Armstrong.

Explanation:

. PLEASE GIVE BRAINLIEST.

Answer:

just add co-ratios and then find the average.

Explanation:

If you keep them exactly the same distance apart, then wrapping the soccer ball in layers of duct tap will increase he gravitational force between them, because the mass of the soccer ball will increase slightly.

The gravitational force between the baseball and a soccer ball will increase by wrapping the soccer ball in layers of duct tap.

The given problem is based on the concept and fundamentals of gravitational force. The force come into play between the objects on Earth and Earth itself on account of gravity, is known as the gravitational force.

Now considering the given problem, the mathematical expression for the gravitational force is,

\(F = \dfrac{G \times m \times M}{r^{2}}\)

Here,

G is the universal gravitational constant.

m is the mass of baseball.

M is the mass of Soccer ball.

r is the distance between the baseball and Soccer ball.

Clearly, the gravitational force is directly proportional to the masses of Baseball and soccer ball and inversely proportional to the square of distance between them.

So, in order to increase the gravitational force, we need to bring both the balls closer because the masses of each balls remains constant. And this is achieved by wrapping the soccer ball in layers of duct tap.

Thus, we can conclude that the gravitational force between the baseball and a soccer ball will increase by wrapping the soccer ball in layers of duct tap.

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Calculation of moisture content. Calculate the moisture content on a wet-weight basis using the following formula: Moisture content (%) = W2 - W3 x 100 W2-W1. where, W1 = weight of container with lid; W2 = weight of container with lid and sample before drying; and W3 = weight of container with lid and sample after drying.

Answer:

p = 120000 kg · m/s

Explanation:

p = mv

p=momentum

m=mass

v=velocity

p = (4800)(25)

p= 120000 kg · m/s

Answer:

\(momentum = mass \times velocity \\ = 4800 \times 25 \\ = 120000 \: kgm {s}^{ - 1} \)

The final volume of water in the container after increasing the temperature is 203.8 m³.

From the given,

The initial volume of water (Vο) = 200 cm³

Initial temperature = 4°C = 4+273 = 277K

Final temperature = 95°C = 273+95 = 368 K

Volume expansion co-efficient = 210×10⁻⁶(°C)⁻¹

Final volume =?

β = 1/Vο (ΔV/ΔT),  β represents the volume expansion coefficient, ΔV change in volume, ΔT is the change in temperature, and Vο is the initial volume.

ΔV = β×Vο×ΔT

     = 210×10⁻⁶×200×(368-277)

    =  210×10⁻⁶×200×91

ΔV = 3.83 m³

ΔV = final volume - initial volume

final volume = ΔV + 200

                    = 3.82 +200

                    = 203.82 m³

Final volume = 203.82 m³.

Thus, the final volume of the water is 203.82 m³.

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Answer: The net force is the vector sum of the two forces, since they’re acting in opposite directions one is negative (left) so

-5 + 7 = 2 to the right

Magnitude is 2

Direction is right

Explanation: