rolls of foil are 304 mm wide and 0.020 mm thick. (the density of foil is 2.7 g/cm3 .) what maximum length of foil can be made from 1.09 kg of foil?

A galaxy cluster contains between 50 to 1,000   galaxies.

A supercluster's galaxy clusters are frequently millions of light years apart from one another, making it difficult to estimate their distance with accuracy. The distance between us and the galaxy clusters in the Hydra Supercluster, which is around 100 million light years long, ranges from 105 to 160 million light years.

In accordance with this theory, groupings of dozens of galaxies are gravitationally drawn together to create galaxy clusters, which then combine to form clusters of hundreds or even thousands of galaxies.

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Answer:

135 J

Explanation:

Let's take a look at the formula for Work, W=Fd, F being force (N) and d being distance (m). We are given the force and distance so plugging it into the formula, W=45N(3.0m), we get 135 J of work.

Hope this helps!

Answer:

0.10 g/cm3

TRUST ME GUYS

Answer:

volatile

Explanation:

volatile means: (of a substance) easily evaporated at normal temperatures.

Answer:

The answer is D. Volatile

Explanation:

The speed of the photon has been obtained as  8.9 * 10^5 m/s.

We know that the energy of the photon would be converted to the kinetic energy of the photon s it is moving. We would now go ahead to obtain the energy in joule.

We now have;

Energy in joules = 2.30 * 1.6 * 10^-19

= 3.68  * 10^-19 J

Then we know that;

KE = 1/2mv^2

KE = kinetic energy

m = mass of the electron

v = speed of the electron

Then

v^2= 2KE/m

v = √2KE/m

v = √2 *  3.68  * 10^-19/9.11 * 10^-31

v = 8.9 * 10^5 m/s

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Answer:

Friction is a force that tends to oppose the relative motion between two bodies in contact. Frictional force always acts on a moving body from the direction opposite to the direction of motion. It opposes the motion, and therefore, helps to reduce the speed of the moving object. It is a contact force.

To prevent cars from falling, the radius at the top of the circle should be

small such cars inverted at the top remain attached during motion.

Correct response;

The radius of the coaster can be C) 20 m

Mass of roller coaster car, m = 500 kg

Speed at the top of the circle, v = 20 m/s

Required:

The maximum radius of the circular path the roller coaster car.

Solution:

\(\displaystyle Centrifugal \ force, \, F_{c} = \mathbf{\frac{m \cdot v^2}{r}}\)

Where;

r = The radius of the circular path.

Weight of the roller coaster car = m·g = The centripetal force

Where;

g = Acceleration due to gravity = 9.81 m/s²

At equilibrium, we have;

Centrifugal force = Centripetal force

\(\displaystyle \frac{m \cdot v^2}{r} = \mathbf{ m \cdot g}\)

Therefore;

\(\displaystyle r = \mathbf{ \frac{v^2}{g}}\)

Which gives;

\(\displaystyle r = \frac{20^2}{9.81} \approx 40.77\)

The maximum radius for safety of a roller coaster, r ≈ 40.77 meters

\(\displaystyle Range \ of \ radius \ of \ the \ circle = \frac{40.77}{4} \leq Radius \ of \ circle \leq 40.77\)

Which gives;

Range of the radius of the circle = 10.2 ≤ Radius of circle ≤ 40.77

The correct option for safety considerations is therefore;

The possible question options are;

A) 5 m  B) 10 m  C) 20 m  D) 40 m  E) 80 m

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Answer:

Period, T = 27.84 seconds

Explanation:

Given the following data;

Length of pendulum = 2m

We know that acceleration due to gravity on earth is equal to 9.8 m/s²

To find the period of oscillation of the simple pendulum;

Mathematically, it is given by the formula;

\( Period, T = 2 \pi \sqrt {lg} \)

Substituting into the equation, we have;

\( Period, T = 2 * 3.142 * \sqrt {2*9.8} \)

\( Period, T = 6.284 * \sqrt {19.6} \)

\( Period, T = 6.284 * 4.43 \)

Period, T = 27.84 seconds

Well as you've seen before most likely, an apple can fall right off a tree, and stay perfectly fine. its all dependent on the variables. What angle is the apple falling at? Whats the speed, height, even the size of the apple? We must take into aware anything can happen, but its all behind the variables.

Brainliest if helpful

P.S Fact Check with the second person who just answered

Answer:

yes

Explanation:

i had an apple tree and it happens all the time most often they don't break open.

Answer:

the current flowing through the battery is 4 A.

Explanation:

Given;

resistance of the three resistors in parallel, R₁, R₂ and R₃ = 3.0 Ω, 12 Ω, and 4.0 Ω

voltage of the battery, V = 6.0 V

The equivalent resistance is calculated as follows;

\(\frac{1}{R_T} = \frac{1}{R_1} + \frac{1}{R_2} + \frac{1}{R_3} \\\\\frac{1}{R_T} = \frac{1}{3} + \frac{1}{12} + \frac{1}{4} \\\\\frac{1}{R_T} = \frac{4 \ + \ 1 \ + \ 3}{12} \\\\\frac{1}{R_T} = \frac{8}{12} \\\\\frac{1}{R_T} = \frac{2}{3} \\\\R_T = \frac{3}{2} \\\\R_T = 1.5 \ ohms\)

The current flowing through the battery is calculated as follows;

\(I = \frac{V}{R_T} \\\\I = \frac{6}{1.5} \\\\I = 4 \ A\)

Therefore, the current flowing through the battery is 4 A.

Answer:

Usually when climbing, it's best to be in the small front ring and the largest back ring. If your cadence is about 100 rpm, then whatever gear you're in is fine. It depends on the road, but as long as your pedaling is at a level you're comfortable with, you're fine.

Explanation:

Google answer by the way.

Answer:

ʕ •ᴥ•ʔ

Explanation:

see

below

Explanation:

refractive index = speed of light in vacuum / speed of light in medium

light travels at a speed of 3.0 x 10^8 m/s in vacuum

refractive index = 3.0 x 10^8 / 2.0 x 10^8

refractive index = 1.5

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The overall charge of an object that has 82 protons, 82 neutrons, and 109 electrons is -27. Details about charge can be found below.

The overall charge of an atom can be calculated by subtracting the number of electrons from the number of protons.

The proton number represents the number of positively charged atom while the electron number represents the number of negatively charged atom.

According to this question, a charged object has 82 protons, 82 neutrons, and 109 electrons. The overall charge of the atom is calculated as follows:

Overall charge = 82 - 109

Charge = -27

Therefore, the overall charge of an object that has 82 protons, 82 neutrons, and 109 electrons is -27.

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On a map, each township consists of 36 sections which have an approximate surface area of 1 square mile each.

In the United States Public Land Survey System (PLSS), a township is a unit of land measurement that is 6 miles by 6 miles, or 36 square miles. Each township is further divided into 36 sections, each of which is 1 square mile or 640 acres. This system was developed in the early 19th century to facilitate the survey and sale of public lands in the western United States. Today, the PLSS is still used in many western states for land management and property boundaries, as well as for mapping and geographic information systems (GIS).

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Answer:

Measurement is the quantification of attributes of an object or event, which can be used to compare with other objects or events

Answer:

The comparison of an unknown quantity with a known quantity is called measurement

Answer:

Explanation:

Just use the acceleration equation here:

\(a=-\frac{v}{t}\) where a = -9.8; velocity is also negative because it's falling down and down is negative. Filling in:

\(-9.8=-\frac{v}{8}\) so

-9.8(8) = -v and

v = 78.4 m/s downward (the word "downward" takes place of the negative sign)

The total mass of the potato slices after 3 days of drying time is approximately 304.71 grams.

The total mass of the potato on day 23 can be estimated by observing the trend in mass reduction over time.

From the given data, we can see that the mass of the potato decreased by 118 grams in the first 14 days (from 330 g to 212 g), and then by 64 grams in the next 7 days (from 212 g to 148 g). Therefore, we can assume that the mass reduction rate is constant.

To find the mass on day 23, we can calculate the mass reduction rate per day:

Mass reduction rate = (330 g - 212 g) / 14 days = 118 g / 14 days = 8.43 g/day

So, the mass on day 23 would be:

Mass on day 23 = 148 g - (8.43 g/day * 9 days) = 148 g - 75.87 g = 72.13 g

The estimated total mass of the potato on day 23 is approximately 72.13 grams.

To determine when the mass was 170 g, we need to find the number of days it took to reach that mass.

Mass reduction rate = (330 g - 170 g) / n days

Solving for n:

(330 g - 170 g) / n days = 8.43 g/day

160 g / n days = 8.43 g/day

n = 160 g / 8.43 g/day

n ≈ 19 days

Therefore, the mass of the potato was 170 g on day 19.

Finally, to find the total mass of the potato slices after 3 days of drying time, we can use the mass reduction rate:

Mass on day 3 = 330 g - (8.43 g/day * 3 days) = 330 g - 25.29 g = 304.71 g

The total mass of the potato slices after 3 days of drying time is approximately 304.71 grams.

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Answer:

a) 35 kPa

d) 140 N

c) 1) Increasing the brake fluid  pressure

2)  Increasing the slave piston surface area.

Explanation:

The parameters given are;

a) Force applied to the master cylinder piston = 28 N

Cross sectional area of the master cylinder piston = 8 cm² = 8 × 10⁻⁴ m²

The pressure P on the brake fluid is given by the formula for pressure as follows;

\(P= \dfrac{Applied \ force}{Area \over \ which \ force \ is \ applied} = \dfrac{28 \, N}{8 \times 10^{-4} \, m^2} = 35,000 \, N/m^2 = 35,000 \, Pa\)

The pressure on the brake fluid, P, produced by the master cylinder piston = 35,000 Pa = 35 kPa

b) Given that the area of the slave piston = 40 cm² = 0.004 m², we have from the formula for pressure, P;

\(P= \dfrac{Applied \ force}{Area \over \ which \ force \ is \ applied} = \dfrac{Applied \ force}{4 \times 10^{-3} \, m^2} = 35,000 \, N/m^2\)

Therefore;

Applied force on the slave piston = 4 × 10⁻³ m² × 35,000 N/m² = 140 N

c) The force, F produced by the slave cylinder piston is given by the relation;

F = Pressure × Area

Therefore, the two ways of increasing the force produced by the slave cylinder piston is as follows;

1) Increasing the pressure in the brake fluid by increasing the force exerted by the master cylinder piston

2) Increasing the surface area of the slave piston.

The focal length of the converging lens is 33.3 cm.

In order to determine the focal length of the converging lens, we can use the lens equation:

1/f = 1/do + 1/di

where f is the focal length of the lens, do is the distance between the object (the light source) and the lens, and di is the distance between the image and the lens.

In this problem, we have do = 50 cm and di = 100 cm. Substituting these values into the lens equation, we get:

1/f = 1/50 cm + 1/100 cm

Simplifying this expression, we get:

1/f = 0.03\(cm^_-1\)

Multiplying both sides by f, we get:

f = 33.3 cm

Therefore, the focal length of the converging lens is 33.3 cm.

This result means that the lens is designed to focus parallel light rays onto a point located 33.3 cm away from the lens. The distance between the object and the lens affects the position and size of the image formed by the lens, while the focal length determines the degree of convergence of the light rays passing through the lens.

It is worth noting that the lens equation assumes that the lens is thin, meaning that its thickness is negligible compared to its radius of curvature. In addition, the lens equation assumes that the light rays passing through the lens are close to the optical axis and that the lens is made of a homogeneous material with a constant refractive index.

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The complete answer is:

You place your light source 50.0 cm away from a converging lens; an image is produced on a screen 100.0 cm behind the lens. What is the focal length of the lens? What is the magnification of the image?

Answer:

The average speed of 3.5 m/s means that it takes Sally approximately 47.619 minutes to run 10,000 meters

Explanation:

Average speed is a scalar quantity that is given by dividing the total distance moved or traveled by an object by the time that it takes the object during the motion

The average peed indicates the rate at which the object makes a given amount of journey distance given that the journey is completed with varying speeds

With the knowledge of the average speed and the distance covered, the time for completion of the journey can be found as follows;

\(Average \ speed , \overline v = \dfrac{\Delta x}{\Delta t}\)

Where

\(\overline v\) = Average speed of the object = 3.5 m/s

Δt = The time it takes the Sally to run 10,000 meters

Δx = The total distance Sally runs = 10,000 meters

Therefore;

\(\Delta t = \dfrac{\Delta x}{ \overline v} = \dfrac{10,000 \ m}{3.5 \ m/s} = \dfrac{20,000}{7} \ s \approx 2,857.143 \ s\)

The time it takes the Sally to run 10,000 meters= Δt = 20,000/7 seconds ≈ 2,857.143 seconds

20,000/7 seconds ≈ 47.619 minutes

Therefore, the average speed of 3.5 m/s means that the time it takes the Sally to run 10,000 meters ≈ 47.619 minutes

Answer:

Capricorn what is yours

Answer:

leo

Explanation:

Answer:

El delfín nada a una profundidad de 22 m

Explanation:

El principio fundamental de la hidrostática establece que la presión en un punto del interior de un fluido (presión hidrostática) es directamente proporcional a su densidad, a la profundidad que se encuentre dicho punto y a la gravedad del sitio en el que se encuentre el fluido.

Esto se expresa como:

P=ρ⋅g⋅h

donde:

En este caso:

Reemplazando:

2.22*10⁵ Pa= 1,030 \(\frac{kg}{m^{3} }\) * 9.8 \(\frac{m}{s^{2} }\) * h

Resolviendo:

\(h=\frac{2.22*10^{5} Pa}{1,030\frac{kg}{m^{3} }*9.8 \frac{m}{s^{2} }}\)

h= 21.993 m ≅ 22 m

El delfín nada a una profundidad de 22 m