The moon has a mass of 7. 35 × 10^22 kg and a radius of 1. 74 × 10^6 m. It orbits around the earth at a distance of 3. 84 × 10^8 m, completing a full rotation every 27. 3 days. It also spins on its axis at a speed such that the same side of the moon is always facing the earth.

Since the mass is not present, the tension in the rope T = 0 N.

Tension, in physics, is be defined to be the pulling force transmitted axially by the means of a string, a rope, chain, or similar object. The opposite of tension could be compression.

At the atomic level, when atoms/molecules are pulled apart from each other and gain potential energy with a restoring force still existing, the restoring force might create tension.

Tension is a pulling force since it is exerted when a mass being pulled by a rope or a similar object. If the mass is not present, then there is no tension (pulling force) exerted by the rope, hence T = 0 N.

Learn more about tension here: https://brainly.com/question/2008782

#SPJ4

Answer:

A opção A está correta.

O sistema formado pela garrafa térmica e a água perde 400 cal de calor para o meio ambiente.

Option A is correct.

The system formed by the thermos and the water loses 400 cal of heat to the environment.

Explanation:

Quando a temperatura de um sistema reduz, fica claro que o sistema perdeu calor ou energia térmica. Como a temperatura é um dos indicadores mais claros disso, esta conclusão é hermética e correta.

Mas, para saber a quantidade de calor perdida para o meio ambiente, agora fazemos alguns cálculos de energia térmica.

Transferência de calor de ou para o sistema de água e garrafa térmica = c × ΔT

c = capacidade térmica do sistema de água e garrafa térmica = 80 cal /°C

ΔT = Alteração da temperatura do sistema de água e garrafa térmica = (temperatura final) - (temperatura inicial) = 55 - 60 = -5°C

Calor transferido = 80 × -5 = -400 cal.

O sinal de menos mostra que o calor é transferido para fora do sistema, ou seja, o calor é perdido no sistema.

Espero que isto ajude!!!

English Translation

The thermos (also known as "Dewar vase") is an extremely useful device to conserve bodies (essentially liquid) at high temperatures, minimizing energy exchanges with the environment, which is generally colder. A thermos contains water at 60 o C. The thermos + water set has a thermal capacity of C = 80 cal / o C. The system is placed on a table and, after a considerable period of time, its temperature decreases to 55 o C. In this case, it is concluded that the system formed by the thermos and the water inside:

a) lost 400 cal. B) gained 404cal. C) lost 4 850 cal. D) gained 4 850 cal. E) did not exchange heat with the external environment.

Solution

When a system's temperature reduces, it is clear to conclude that the system has lost heat or thermal energy. Since temperature is one of clearest indicators of this, this conclusion is airtight and correct.

But, to know the amount of heat lost to the environment, we now do some thermal energy calculations.

Heat transferrred from or to the water and thermos system = c × ΔT

c = heat capacity of the water and thermos system = 80 cal/°C

ΔT = Change in temperature of the water and thermos system = (final temperature) - (initial temperature)

= 55 - 60 = -5°C

Heat transferred = 80 × -5 = -400 cal.

The minus sign shows that the heat is transferred out of the system, that is, the heat is lost from the system.

Hope this Helps!!!

The given statement "The measurement of voltage requires to place the voltmeter leads across the component whose voltage you wish to determine" is true.

The voltage is the difference in electrical potential between two points in a circuit, or it's the amount of electrical potential energy in a circuit. Voltage is measured in volts using a voltmeter, which is a device that measures the potential difference between two points in a circuit. Voltage is generally referred to as electric potential energy per unit charge.

As we know, every electrical circuit has a voltage that is the difference between the circuit's potential energy and the potential energy of the circuit's surroundings. The voltage across a component in a circuit is determined by comparing the potential energy on each side of the component.

A voltmeter is a device used to calculate this voltage. It works by measuring the voltage difference between two points in a circuit.The voltmeter is connected in parallel with the component whose voltage is being measured. The two leads of the voltmeter are connected in parallel with the component.

Know more about voltage here:

https://brainly.com/question/32002804

#SPJ11

At the start, grocery stores tend to be fuller due to restocking and customers' early shopping.

As the day progresses, the stores gradually empty as products are purchased. This pattern is driven by the influx of shoppers in the morning and their subsequent departure throughout the day, resulting in a decline in store occupancy. At the beginning of the day, grocery stores often experience a surge in activity as they open their doors. Shelves are typically restocked overnight to ensure an ample supply of products for customers. Additionally, some shoppers prefer to visit the store early in the day to avoid crowds and have access to freshly stocked items.However, as the day unfolds, the number of customers decreases, and products are purchased, causing the store to gradually empty. The high volume of shoppers in the morning slowly declines, leading to reduced occupancy and depleting stocks. By the end of the day, the store may appear relatively empty compared to its earlier state.This pattern can be attributed to various factors, such as people's work schedules, school hours, and personal routines. Typically, mornings are more convenient for many individuals to engage in grocery shopping, while evenings are often associated with other activities or rest.

Learn more about  progresses here:

https://brainly.com/question/14659104

#SPJ11

Explanation:

W = F * d      <====   ( Force * distance)

     500 N  * .7 m = 350 J

Answer:

16fl = 90 kacl because 8 fl double = 16 fl so 45 kcal = 90 kcal (double )

Answer:

Third Law Of Motion.

Explanation:

The law of interaction, the third one, explains that if one body exerts a force on a second body, the second body exerts a force equal in magnitude and opposite in direction on the first body.

The electric charge the capacitor store now is  0.065 C.

What is a capacitor?

A capacitor is a device that uses the accumulation of electric charges on two nearby surfaces that are electrically isolated from one another to store electrical energy in an electric field. It has two terminals and is a passive electrical component. referrer=search Results refers to a capacitor's effect. Initially when switch S is open for a long time the charge stored on the capacitor is given by the following equation.

The solution to this question is too large so I am adding this screenshot kindly check the attachment:

Now final charge on the capacitor after closing the switch for a long time

Q = CE

Q = 3.65*10^{-3}*17.76= 0.065 C

Hence, the electric charge the capacitor store now is  0.065 C.

To learn more about the capacitor

https://brainly.com/question/21496295?

#SPJ4

After the cylinder leaves the table, but before it lands, rotational kinetic energy stays the same and translation kinetic energy increases.

The definition of rotational energy, also referred to as angular kinetic energy, is as follows: It is the portion of an object's total kinetic energy that results from rotation. The rotational inertia and the square of the angular velocity have a direct relationship with rotational kinetic energy. Translation The energy involved in the movement of the center of mass of a chemical entity is known as kinetic energy. There is only one distinction between rotational and translational kinetic energy: translational energy moves in a straight line, but rotational energy does not. When a bicycle is being ridden down a bike route, the tire provides an illustration of both kinetic and translational kinetic energy. After the cylinder leaves the table, but before it lands, rotational kinetic energy stays the same and translation kinetic energy increases.

Learn more about Rotation Kinetic Energy

brainly.com/question/15764612

#SPJ4

The angular velocity of the system after the books are raised up above the person so that the dimension parallel to the ground is now 0.5 ft and the center of gravity of the books are 1 ft apart is 27.5 rad/s.

The angular velocity of the system after the books are raised up above the person so that the dimension parallel to the ground is now 0.5 ft and the centers of gravity of the books are 1 ft apart can be determined using the concept of the center of gravity.

The center of gravity of the entire system is calculated by finding the weighted average of the two books center of gravity

Therefore, the center of gravity of the two books is calculated as:

((5 ft x 2 lb) + (6 ft x 2 lb)) / (2 lb + 2 lb) = 5.5 ft

The angular velocity is then calculated as the product of the center of gravity and the original angular velocity, in this case 5 rad/s:

5.5 ft x 5 rad/s = 27.5 rad/s.

Therefore, the angular velocity  is 27.5 rad/s.

To practice more questions about angular velocity:

https://brainly.com/question/20432894

#SPJ11

Concave mirror is used to make to solar heater because it can converge light of sun in a small area

hope it helps

A steel wire 4.5 m long stretches 0.15 cm when it is given a tension of 370 N. then the diameter of the wire is 2.6 × 10⁻³ m.

Given,

length of the wire L = 4.5 m

elongation l = 0.15 cm = 0.15 × 10⁻² m

restoring force F = 370 N

In this problem young's modulus of the wire is not given, consider the young's modulus of the wire is Y = 2 × 10¹¹ pa.

Youngs modulus Y = Fl ÷ AL

where A is cross sectional area of the wire,

Putting all the values

2 × 10¹¹ pa. = 370 N × 4.5 m ÷ A × 0.15 × 10⁻² m

A. = 370 N × 4.5 m ÷  2 × 10¹¹ pa × 0.15 × 10⁻² m

A = 5.55 × 10⁻⁶

πr² = 5.55 × 10⁻⁶

r = 1.32 × 10⁻³ m

Diameter d = 2r = 2 × 1.32 × 10⁻³ m = 2.6 × 10⁻³ m.

To know more about Diameter :

https://brainly.com/question/5501950

#SPJ1.

Answer:

a. 150 J

b. 150 J

c. 0 J

d. 0 J

Explanation:

The given parameters are;

The horizontal force with which the man pulls the canister, F = 50 N

The distance he moves the vacuum cleaner, d = 3.0 m

a. Work done, W = Force applied, F × Distance moved by the force, d

Therefore, for the work done by the 50 N force on the canister, we have;

W = 50 N × 3.0 m = 150 N·m = 150 J

b. Given that he pulls the canister at a constant speed, we have;

The acceleration of the canister, a = 0 m/s²

Therefore, the net force on the canister, \(F_{NET}\) = F - \(F_{Friction}\)  = m × a

Where;

m = The mass of the canister

a = The acceleration of the canister

F = The applied force = 50 N

\(F_{Friction}\) = The force of friction

∴ \(F_{NET}\) = m × a = m × 0 m/s² = 0 N

Therefore;

\(F_{NET}\) =  F - \(F_{Friction}\) = 0 N

From which we have;

F = \(F_{Friction}\) = 50 N (The applied force, F is equal to the force of friction,

The work done by friction = The force of friction × The distance in which the force of friction acts

∴ The work done by friction = \(F_{Friction}\) × d - 50 N × 3.0 m = 150 J

The work done by friction = 150 J

c. The normal force, N acts perpendicular to the force of friction

The distance the canister moves in the perpendicular direction, \(d_p\) = 0 m

∴ The work done by the normal direction = N × \(d_p\) = N × 0 m = 0 J

The work done by the normal direction = 0 J

d. The vacuum weight, W, acts on the same line as the normal force but in the opposite direction to the normal force, N

Therefore, the weight, W, acts perpendicular to the line of motion of canister

The distance the canister moves in the direction of the weight, \(d_{wieght}\) = 0 m

Therefore, the work done by the weight = W × \(d_{wieght}\) = W × 0 m = 0 J

The work done by the weight = 0 J

The change in electric potential energy when moving from (55 cm, 70 cm) to (35 cm, 45 cm) is 0.232 Joules, b. while the change in electric potential energy when moving the same distance along the x-axis is zero.

calculate the change in electric potential energy, we can use the formula:

ΔU = qΔV

where ΔU is the change in electric potential energy, q is the charge, and ΔV is the change in electric potential.

(a) Moving from (x, y) = (55 cm, 70 cm) to (x, y) = (35 cm, 45 cm):

The charge is moving perpendicular to the electric field, so the work done by the electric field can be calculated using:

ΔU = qΔV = qEd

where E is the magnitude of the electric field and d is the distance moved.

q = 13.5 μC = 13.5 × \(10^{-6\) C

E = 540 N/C

d = √[\((x2 - x1)^2 + (y2 - y1)^2\)] (distance between the two points)

Substituting the values:

d = √\([(35 cm - 55 cm)^2 + (45 cm - 70 cm)^2]\)

= √\([(-20 cm)^2 + (-25 cm)^2]\)

= √\([400 cm^2 + 625 cm^2]\)

= √1025\(cm^2\)

≈ 32.02 cm

ΔU = (13.5 × \(10^{-6\) C) * (540 N/C) * (32.02 cm)

= 0.232 J

The change in electric potential energy is approximately 0.232 Joules.

(b) Moving the same distance along the x-axis

the electric field is parallel to the y-axis and the charge is moving along the x-axis, the work done by the electric field is zero. This is because the electric field and the displacement are perpendicular to each other.

The change in electric potential energy is zero.

To know more about electric potential refer here

https://brainly.com/question/28547725#

#SPJ11

The cumulative distance the bird travels is 4.4 km.

The time of motion of the bird is calculated from the principle of relative velocity.

distance covered by bird - distance of runner = distance between them

vb_t - vr_t = d

(vb - vr)t = d

where;

(28.4 - 7.1)t = 3.3

21.3t = 3.3

t = 3.3/21.3

t = 0.155 hr

d = 0.155 hr  x 28.4 km/h

d = 4.4 km

Learn more about distance traveled by object here: https://brainly.com/question/28032639

#SPJ1

Answer:

Av = 25 [m/s]

Explanation:

To solve this problem we must use the definition of speed, which is defined as the relationship between distance over time. for this case we have.

\(Av=\frac{distance}{time}\)

where:

Av = speed [km/h] or [m/s]

distance = 180 [km]

time = 2 [hr]

Therefore the speed is equal to:

\(Av = \frac{180}{2} \\Av = 90 [km/h]\)

Now we must convert from kilometers per hour to meters per second

\(90[\frac{km}{h}]*1000[\frac{m}{1km}]*1[\frac{h}{3600s} ]= 25 [m/s]\)

Answer:

Electric current is the answer

Explanation:

because in the quistion they explain everything that goes into this

Answer:

A

Explanation:

I took the test

The energy of nuclear fission is released as kinetic energy of the fission products and fragments, and as electromagnetic radiation in the form of gamma rays; in a nuclear reactor, the energy is converted to heat as the particles and gamma rays collide with the atoms that make up the reactor and its working fluid, ...

The temperature of the countertop changes by 0.032 °C. You are preparing breakfast and slide a plate on the countertop.

The quantity of heat transferred to the countertop is given by

Q = CΔT where Q = quantity of heat transferred to the countertop = 5000 J = 5 kJ, C = heat capacity of the countertop = 158.5 kJ/°C and ΔT = temperature change of the countertop.

Since we require the temperature change of the countertop, we make ΔT subject of the formula.

So, ΔT = Q/C

So, substituting the values of the variables into the equation, we have

ΔT = Q/C

ΔT = 5 kJ/158.5 kJ/°C

ΔT = 0.032 °C. So, the temperature of the countertop changes by 0.032 °C.

You are preparing breakfast and slide a plate on the countertop. If the countertop. If the countertop is 1.05 m above the floor and it leaves the top at 0.74m/s.

Therefore, The temperature of the countertop changes by 0.032 °C. You are preparing breakfast and slide a plate on the countertop.

Learn more about temperature on:

https://brainly.com/question/11464844

#SPJ5

Answer: the answer is b

Explanation: becuse the friction of the air heats it

Given:

The gravitational constant, G=6.67259×10⁻¹¹ N·m²/kg⁻²

The mass of the moon, M=7.36×10²² kg

The radius of the orbit of the satellite, R=955.2 km=955.2×10³ m

To find:

1. Satellite's speed.

2. The period of satellite.

3. The acceleration of the satellite.

Explanation:

1.

The gravitational force applied by the moon on the satellite provides the satellite with the centripetal force that is neccessary for the satellite to orbit the moon.

Thus,

Where F_c is the centripetal force, F_g is the gravitational force, and v is the orbital velocity of the satellite.

On substituting the known values,

2.

The orbital period of the satellite in seconds is given by,

Thus the period of the satellite in hours is given by,

On substituting the known values,

3.

The acceleration of the satellite is given by,

On substituting the known values,

Final answer:

1. The orbital velocity of the satellite is 23267.46 m/s

2. The period of the satellite is 0.74 hr

3. The acceleration of the satellite is 5.38 m/s²

Answer:

I believe it's A. Sagittarius

to find the modulus of elasticity MoE at 23% of moisture content based on the already given modulus of elasticity of 12% moisture content we need to consider a shrinkage behavior of material. the expected MoE comes out to be approximately \(6,836 N/mm².\)

given information:

Modulus of elasticity at 12% moisture content =7,920 N/mm²

resultant shrinkage or final shrinkage percentage FSP = 30%

To calculate the expected MoE at 23% moisture content we have the following equation:

MoE-23% =   \(MoE-12%\) \((1 - FSP (23 - 12) / (100 - 12))\)

MoE-23% = \(7,920 N/mm² × (1 - 0.30 × (23 - 12) / (100 - 12))\)

MoE-23% =\(7,920 N/mm² × (1 - 0.30 × 11 / 88)\)

MoE-23% = \(7,920 N/mm² × (1 - 0.1364)\)

MoE-23% = \(7,920 N/mm² × 0.8636\)

MoE-23% =  \(6,836 N/mm²\)

therefore the expected modulus of elasticity at 23% moisture content comes out to be approx \(6,836 N/mm²\).

to know more about modulus of elasticity refer to the link below

https://brainly.com/question/29767033

#SPJ4

An encryption can be defined as a form of cryptography and it typically involves the process of converting or encoding information in plain text into a code, known as a ciphertext. Generally speaking, an information or data that has been encrypted it can only be accessed and deciphered by an authorized user.

This ultimately implies that, an encryption simply refers to a utility which can be used by an end user to to secure his or her sensitive information from unauthorized access or theft by a hacker (attacker).

In Computer programming, some examples of encryption algorithms include the following:

In Computer technology, a defragmentation utility helps to reorganize (rearrange) the data stored on a disk drive and as such, it would make a computer system to run faster. Also, a compression utility is a type of utility which can be used to reduce the size of a large video file that is to be sent through an email.

Read more on defragmentation utility here: https://brainly.com/question/14237107

#SPJ1