Hi guys :( Can u please help me? Im really bad at this fr :( I would appreciate if you guys help me, I put the picture

When the earth wire is connected to the metal case of the washing machine, it provides an alternative pathway for electric current to flow if there is a fault, such as if the live wire touches the metal case. The earth wire is connected to the ground, which has zero potential, so any current that flows through the earth wire will not harm a person who touches the metal case. This is because the person's body is also at zero potential (ground potential) and there will be no potential difference (voltage) across the person's body, which means no electric current will flow through the person's body. Therefore, connecting the earth wire to the metal case of the washing machine ensures that any electrical faults will be safely conducted away from the person, reducing the risk of electric shock or electrocution.

Answer:

P.E.= 12.348 joules

K.E.=1.26 joules

Explanation:

the mixer truck can carry 4 cubic meters of concrete in its drum when it is full.

To calculate the volume of concrete that the mixer truck can carry, we first need to determine the volume of the drum when it is full of concrete.

The mass of the concrete in the drum can be calculated by subtracting the empty mass of the truck (8400 kg) from the mass of the truck when it is full of concrete (18,000 kg).

mass_concrete = 18,000 kg - 8,400 kg

= 9,600 kg

The density of concrete is given as 2400 kg/m²3, so we can calculate the volume of the concrete using the formula:

volume_concrete = mass_concrete / density_concrete

= 9,600 kg / 2400 kg/m²3

= 4 m²3

Therefore, the mixer truck can carry 4 cubic meters of concrete in its drum when it is full.

learn more about volume here:

https://brainly.com/question/1578538

#SPJ9

Part 1- The work done by the gas during this process will be 5.65 ×10⁻³ kJ.

Part 2-The heat added to the gas during this process will be 5.65 ×10×10⁻³ kJ.

Work is the product of pressure p and volumes V during a volume change for such a gas. The work seems to be the area under the curve that indicates how the state changes.

The work done under the isothermal process is;

\(\rm W= P_1V_1 log_e(\frac{P_1}{P_2} )\\\\ W= 7 \times 1.71429 \times 10^{-3} log_e(\frac{7 }{2} )\\\\\ W= 0.0044 \ kJ\)

For the isothermal process;

ΔU=0

\(\rm \triangle Q = \triangle E + \triangle W \\\\ Q = 0 + 5.65 \times 10^{-3}\\\\ Q = 5.65 \TIMES 10^{-3} \ kJ\)

Hence, the work done, and the heat added by the gas during this process will be 5.65 ×10⁻³ kJ and 5.65 ×10×10⁻³ kJ respectively.

To learn more about work done by the gas, refer to the link;

https://brainly.com/question/12539457

#SPJ1

Answer:

D.

Explanation:

Answer:

The talk test is used to measure moderate-intensity activities. If a person can talk during an activity, but cannot sing, they are engaged in moderate-intensity activity. If they cannot talk, they are doing a higher-level intensity activity.

Explanation:

Answer:

Explanation:

as we know that 1 km =1000 m and 1 hr= 3600 sec

so 15 km/hr =15*1000 m/3600 sec

15 km/hr= 4.167 m/s

Answer:

I don't think the information is complete

Answer: 104 Fahrenheit (°F) = 40 Celsius (°C)

104 Fahrenheit to Celsius is 40°C.

Formula for conversion from Fahrenheit to Celsius:

Celsius = (Fahrenheit - 32) * 5/9

Celsius = (104 - 32) * 5/9

Celsius = 72 * 5/9

Celsius = 40°C

What is celsius?

Celsius, also known as centigrade, is a temperature scale used in the metric system of measurement. It is the most widely used temperature scale in the world and was developed by Swedish astronomer Anders Celsius in the 18th century. Celsius is based on the freezing point of water (0°C) and the boiling point of water (100°C). Positive numbers represent temperatures above the freezing point and negative numbers represent temperatures below the freezing point. The degree Celsius is denoted by the symbol °C and is defined as the temperature of a system in which the triple point (the temperature and pressure at which the three phases of a substance coexist in thermodynamic equilibrium) of water is equal to 0.01°C. Celsius is the most common temperature scale used in everyday life, and is used in meteorology, climate science, and other scientific fields.

Therefore, 104 Fahrenheit to Celsius is 40°C.

To learn more about celsius

Here: https://brainly.com/question/30386223

#SPJ4

The observed lifetime of the muon in the observer's rest frame is approximately 1.27 x \(10^{-17\) s.

The lifetime of a muon in the observer's rest frame is related to its energy and velocity. The lifetime of a muon is given by the formula:

τμ = 0.55 * 10^(-15) * 1/\(\sqrt{(E/MeV)\) * v/c

where E is the energy of the muon, MeV is the mass of the muon in eV/\(c^2\), and v is the velocity of the muon in m/s.

Substituting the given values, we have:

E = 0.911 MeV (1 GeV/\(c^2\))

v = 0.999c

Using the formula above, we get:

τμ = 0.55 * \(10^{(-15)\) * 1/\(\sqrt{(0.9112)\) * 0.999/c

τμ = 0.55 * \(10^{(-15)\) * 1/\(\sqrt{(2.178)\) * 2.977/c

τμ = 1.27 * \(10^{-17\) s

Therefore, the observed lifetime of the muon in the observer's rest frame is approximately 1.27 x \(10^{-17\) s.

Learn more about muon

https://brainly.com/question/33396555

#SPJ11

The altitude of the satellite is 883.89 km

Generally, The Rayleigh criterion for resolution states that the minimum angle, θ, between two point sources that can be resolved is given by:

θ = 1.22 * λ / D

where

λ is the wavelength of light and

D is the diameter of the lens.

The minimum distance, d, between two point sources that can be resolved is given by:

d = θ * L

where

L is the distance from the lens to the image.

Given the green lights have a wavelength of 508 nm, we can convert it to meters:

λ = 508 * 10^-9 m

Given the diameter of the lens is 49.8 cm, we can convert it to meters:

D = 49.8 cm * (1 m / 100 cm)

= 0.498 m

Using the Rayleigh criterion, we can find the minimum resolvable angle:

θ = 1.22 * λ / D

= 1.22 * 508 * 10^-9 / 0.498

= 1.24449799*10^{-6} radians

We know the lights on the satellite are spaced 1.1 m apart, so:

d = 1.1 m

Solving for the distance from the lens to the image, L:

L = d / θ

= 1.1 m / 1.24449799*10^{-6} radians

=883890.53 m

Finally, converting the distance to kilometers:

L = 883890.53 m * (1 km / 1000 m)

= 883.89 km

Read more about altitude

https://brainly.com/question/4390102

#SPJ1

It takes 0.5 seconds for the dart to hit the dartboard or the wall by newtons law of motion.

The time it takes a dart to strike a wall or a dartboard can be calculated using the horizontal distance and horizontal velocity of the dart. The dart's horizontal velocity remains constant throughout its flight because there is no horizontal acceleration.

Let's use the symbols d for the horizontal distance and v x for the horizontal velocity. After that, we can apply the formula:

d = v x * t

where t is the amount of time the dart took to hit the wall or the dartboard.

The horizontal distance in this instance is 5 metres, and the horizontal speed is 10 metres per second (m/s). When we enter these values into the formula above, we obtain:

5 m = 10 m/s * t

To solve for t, we obtain:

t = 5 m / 10

t = 0.5 seconds

To know more about motion visit:-

brainly.com/question/22810476

#SPJ4

Answer: 5.4 seconds

Explanation:

The time taken to stop the bicycle is 5.4 seconds. The final velocity is zero. Then, the distance travelled by the bicycle is 36.45 m.

Acceleration is a physical quantity that, measures the rate of change in velocity. It is a vector quantity thus having both magnitude and direction. It can be defines as the ratio of change in velocity to the change in time.

Given initial velocity = 13.5 m/s

final velocity is zero since the bicycle is stopping.

then Δt = Δv/a

Δt = 13.5 m/s/ 2.50 m/s² = 5.4 seconds.

Hence, the bicycle will take 5.4 s to complete stop.

The distance covered within this time can be determined using the equation as follows:

s = ut + 1/2 at²

where u is the initial velocity

s =  (13 m/s × 5.4 s) + (-2.50 m/s² ×5.4 s ×5.4 s) = 36.4 m.

Therefore, the bicycle will travel up to 36.4 m before stopping.

Find more on acceleration:

https://brainly.com/question/2303856

#SPJ2

Answer:

The resistance of the tungsten coil at 80 degrees Celsius is 15.12 ohm

Explanation:

The given parameters are;

The resistance of the tungsten coil at 15 degrees Celsius = 12 ohm

The temperature coefficient of resistance of tungsten = 0.004/°C

The resistance of the tungsten coil at 80 degrees Celsius is found using the following relation;

R₂ = R₁·[1 + α·(t₂ - t₁)]

Where;

R₁ = The resistance at the initial  temperature = 12 ohm

R₂ = The resistance of tungsten at the final temperature

t₁ = The initial temperature = 15 degrees Celsius

t₂ = The final temperature = 80 degrees Celsius

α = temperature coefficient of resistance of tungsten = 0.004/°C

Therefore, we have;

R₂ = 12×[1 + 0.004×(80 - 15)] = 15.12 ohm

The resistance of the tungsten coil at 80 degrees Celsius = 15.12 ohm.

Distance is the measure of the length of ground covered by an object during its motion. Distance is a scalar quantity. The car will travel 69 m while accelerating.

Distance is the measure of the length of ground covered by an object during its motion. While the displacement is defined as the shortest distance between the two paths.

Distance is a scalar quantity. While displacement is a vector quantity. Mathematically it is given as the product of speed and time.

The following data are given in the problem as

u is the initial  speed=5.0 m/sec

v is the final speed=21 m/sec

s is the distance covered by the car =?

a= Acceleration of car =3.0 m/sec²

According to Newton's third equation of motion, the formula derived will be

\(\rm{v^2=u^2+2as \\\\\)

\(\rm s = \frac{v^2-u^2}{2a} \\\\\rm s = \frac{(21)^2-(5)^2}{2\times3.0} \\\\ \rm s=69 m\)

Hence the car will travel 69 m while accelerating.

To learn more about the distance refer to the link;

https://brainly.com/question/989117

The momentum flow rate through the pipe carrying liquid ammonia is 1 × \(10^6\) kg·m/s.

The flow rate of momentum (Ṁ) through the pipe can be calculated by multiplying the mass flow rate (ṁ) by the velocity (v). The speed can be determined using the equation v = ṁ / (ρA), where ρ is the density of the liquid ammonia and A is the pipe's cross-sectional area.

Given:

ṁ = 100 kg/s

A = 0.01 m²

Assuming the density (ρ) of liquid ammonia is 700 kg/m³, we can calculate the velocity (v):

v = ṁ / (ρA)

v = 100 kg/s / (700 kg/m³ × 0.01 m²)

v = 10000 m/s

Now, we can calculate the flow rate of momentum (Ṁ):

Ṁ = ṁv

Ṁ = 100 kg/s × 10000 m/s

Ṁ = 1 × \(10^6\) kg·m/s

Therefore, the momentum flow rate through the pipe is 1 × \(10^6\) kg·m/s.

Learn more about the flow rate of momentum at

https://brainly.com/question/30338128

#SPJ4

When synthesizing methyl-p-nitrobenzoate and methyl-o-nitrobenzoate, destabilized cationic intermediates can form as minor products.

These intermediates are formed when the reaction conditions favor the formation of a carbocation intermediate rather than the intended product. Carbocation intermediates are highly reactive and unstable, which can lead to the formation of unexpected products. In the case of methyl-p-nitrobenzoate and methyl-o-nitrobenzoate synthesis, destabilized cationic intermediates can lead to the formation of byproducts or isomers that are different from the desired product. To minimize the formation of destabilized cationic intermediates, reaction conditions must be carefully controlled to favor the formation of the desired product over any competing reactions.

More on cationic intermediates: https://brainly.com/question/31156068

#SPJ11

Answer:

Option A. 1.1×10¯²⁴ N

Explanation:

The following data were obtained from the question:

Charge 1 (q1) = - 4e

Charge 2 (q2) = + 3e

Distance apart (r) = 0.05 m

Electric field constant (K) = 9×10⁹ N•m²/C²

Electron (e) = 1.6×10¯¹⁹ C.

Electric Force (F) =..?

Next, we shall determine the value of the two charges.

This is illustrated below:

Charge 1 (q1) = - 4e

Charge 1 (- q1) = 4e

Electron (e) = 1.6×10¯¹⁹ C.

Charge 1 (- q1) = 4 × 1.6×10¯¹⁹ C.

Charge 1 (- q1) = 6.4×10¯¹⁹ C.

Charge 2 (q2) = + 3e

Electron (e) = 1.6×10¯¹⁹ C.

Charge 2 (q2) = 3 × 1.6×10¯¹⁹ C.

Charge 2 (q2) = 4.8×10¯¹⁹ C.

Finally, we shall determine the value of the electric force. This can be obtained as shown below:

Charge 1 (- q1) = 6.4×10¯¹⁹ C.

Charge 2 (q2) = 4.8×10¯¹⁹ C.

Electric field constant (K) = 9×10⁹ N•m²/C².

Distance apart (r) = 0.05 m

Electric Force (F) =..?

F = Kq1q2 /r²

F = (9×10⁹× 6.4×10¯¹⁹× 4.8×10¯¹⁹)/(0.05)²

F = 1.1×10¯²⁴ N

Therefore, the electric force between the two point charge is 1.1×10¯²⁴ N

Answer:

   V = 12V,  V = 8V

Explanation:

a) In this series circuit the equivalent resistance is

          Req - R1 + R2

          Req = 30 + 20

          Eeq = 50 Ω

b) see attached

c) the circuit current is

          i = V / Req

          i = 20/50

          i = 0.4 A

voltages are>

         V = 0.4 30

          V = 12V

           V = 0.4 20

            V = 8V

Answer:

The kinetic energy (K) of an object is given by the equation:

K = 1/2 mv^2

where m is the mass of the object and v is its velocity.

Plugging in the values given, we get:

K = 1/2 (30 kg) (5 m/s)^2

K = 1/2 (30) (25)

K = 375 J

Therefore, the girl's kinetic energy is 375 joules.

Explanation:

The speed of the cat when it slide off the table is 2.27 m/s

To obtain the answer to the given question, we'll begin by obtainig the time taken for the cat to strike the floor. This can be obtained as follow:

h = ½gt²

0.94 = ½ × 9.81 × t²

0.94 = 4.905 × t²

Divide both side by 4.905

t² = 0.94 / 4.905

Take the square root of both side

t = √(0.94 / 4.905)

t = 0.44 s

The speed of the cat can be obatined as illustrated below:

s = ut

1 = u × 0.44

Divide both sides by 0.44

u = 1 / 0.44

u = 2.27 m/s

Thus, we can conclude that the speed of the cat is 2.27 m/s

Learn more about motion under gravity:

https://brainly.com/question/22719691

#SPJ1

Answer:

Amperage is the rate of electrical charge per time.

1 amp = 1 coulomb / second

Power is the product of amperage and voltage.

P = IV

Explanation:

The dog covered 28 m of distance, magnitude of displacement is 4m and direction is in east.

Distance is a scalar quantity that describes how much ground an object covers while moving, and displacement is a vector quantity that describes how far an object has travelled. This is the global change in the object's position.

We know that total distance travelled = 12 m + 16 m = 28 m.

First the dog walks 12m west, but then walks back 16m east. That means you have to subtract the distances to get the displacement.

Displacement = 12 - 16 = -4m (4m to the east, because the distance can never be negative)

Full question here :

Q. A dog walks 12 meters to the east and then 16 meters back to the west. For this motion, what is the distance moved? What is the magnitude and direction of the displacement?

Learn more about Distance here : https://brainly.com/question/17273444

#SPJ9

The solution is since the molar enthalpy of combustion for magnesium is 620 kJ/mol.

Enthalpy of Combustion (EoC) is the amount of energy released when a fuel is oxidized by an oxidizing agent.

25.5 kj of energy are released during the burning of a 1.0 g sample of magnesium to create MgO.

Magnesium has a molecular weight of 24.35g.

A mole of magnesium weighs 24.35 g.

1g = 1/24.35

The release of 25.5 kJ is for 0.04 moles.

25.5 * 1/.04 for 1 mole

= 620 kj/mol

As a result, magnesium has a molar enthalpy of combustion of 620 kJ/mol.

To know more about calorimeter visit:-

https://brainly.com/question/4802333

#SPJ4

a) The mass of the block of ice is 56.9kg

b) If the worker stops pushing at the end of 4.30 s, The distance the block moves in the next 4.20s is 9.96m

Explanation:

a) The given data are:

F = 76.0 N, t = 5.30 s, V = ?, u = 0, a = ?, d = 10.0 m, μ = 0

We know that:

F = ma

where

F is the force applied to the object

m is its mass

a is the acceleration produced by the force

We need to find the mass of the block so we can find its acceleration.

Using F = ma and substituting the values given, we have:76.0 = ma a = 76.0/m

We know that:

d = ut + 1/2at²

where

d is the distance covered by the object

u is its initial velocity, t is time

a is the acceleration of the object since it has been given that the block starts from rest.

u = 0 => d = 1/2at² = (76/m)(5.30/2)² = 14.0 m

Dividing by d = 10.0

we have:

10/14 = 1/1.4 = m/76m = (1/1.4) × 76 = 54.3 kg

Rounding to one decimal place, the mass of the block is 56.9 kg.

b) When the worker stops pushing the block, the force applied is zero so the acceleration of the block becomes zero too.

From 0 s to 4.30 s, the block has travelled a distance of:

d₁ = ut + 1/2at² = (0)(4.30) + (1/2)(76/m)(4.30)² = 69.5/m m

From 0 s to 5.30 s, the block travelled a distance of d = 10.0 m

Therefore, from 4.30 s to 5.30 s, the block travelled:

d - d₁ = 10.0 - 69.5/m

Substituting the value of m, we get:

d - d₁ = 10 - 69.5/56.9 = 9.96 m

Thus, the distance the block moves in the next 4.20 s is 9.96 m.

To know more about force mass and distance refer here:

https://brainly.com/question/13634821#

#SPJ11

Answer:

The cha-cha-cha, is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo

Your answer:

150 kilometer's per hour.

Volcanoes on Enceladus affect the E Ring of Saturn by Option D) supplying ring particles.

Volcanoes on Enceladus, one of Saturn's moons, affect the E Ring of Saturn primarily by supplying ring particles. Enceladus is known for its cryovolcanism, which means that instead of spewing molten rock like on Earth, these volcanoes eject water, ice, and other volatile substances. This process occurs due to the internal heat generated within Enceladus, which causes water and other materials to rise to the surface and be ejected into space.

The particles released by the cryovolcanoes become ionized and are attracted to Saturn's magnetic field, forming a plasma torus around the planet. This torus coincides with the location of the E Ring, and the ejected particles contribute to the formation and maintenance of the ring. Additionally, these particles create a diffuse and faint appearance, which is a characteristic feature of the E Ring.

In summary, the cryovolcanic activity on Enceladus plays a significant role in supplying particles to Saturn's E Ring. The ejection of water, ice, and volatile substances from Enceladus' surface contributes to the formation, maintenance, and unique appearance of the ring. Therefore, Option D is Correct.

Know more about Volcanoes here :

https://brainly.com/question/29507237

#SPJ11

Answer:

B

Explanation:

The pattern that the double slit experiment produces is a diffraction pattern (made as a result of single and double slit interference).

Answer:

B. It is the result of diffraction.

Explanation: a p e x

Answer: Most likely purple

Explanation:

Answer:

Purple?

Explanation:

I'm confused what you are asking.