A circuit consists of a 10.0-ohm resistor, a 15.0-ohm resistor, and a 20.0-ohm resistor connected in parallel across a 9.00-volt battery. What is the equivalent resistance of this circuit?0.200 Ω1.95 Ω4.62 Ω45.0 Ω

Answer:

example would be a rock sitting on a cliff

Explanation:

when work is done on object energy is transferred to the object and it gains gravitational potential energy.

Answer:

Average speed = 26.67 km/h

Explanation:

It is given that,

The first half of the journey by a body is traveled with a speed of 40 km/h and the next half is covered with a speed of 20 km/h

We need to find the average speed of the whole journey.​ When two speeds are given, the average speed is given by :

\(v=\dfrac{2v_1v_2}{v_1+v_2}\\\\v=\dfrac{2\times 40\times 20}{40+20}\\\\v=26.67\ km/h\)

So, the average speed of the body of the whole journey is 26.67 km/h.

Answer:

Explanation:

The equation for this is

\(f=\frac{v}{\lambda}\) where f is the frequency, v is the velocity, and lambda is the wavelength. Filling in:

\(256=\frac{350}{\lambda}\) and

\(\lambda=\frac{350}{256}\) which means that

the wavelength is 1.37 m, rounded to the correct number of significant digits.

The induced emf in one of the windings is approximately 10.1 millivolts. Using Faraday's Law, which states that the induced emf is equal to the rate of change of magnetic flux.

In this case, the solenoid is the source of the changing magnetic field.
Assuming that the solenoid has N windings, and the magnetic flux through one winding is given by Φ, then the induced emf in one winding is:

\(emf=-Ndi/dt\)
where the negative sign indicates that the induced emf opposes the change in magnetic flux.
Given that the current in the solenoid is decreasing at a rate of 40.0 A/s, we can use Ampere's Law to find the magnetic flux through one winding. Ampere's Law states that the magnetic field inside a solenoid is proportional to the current flowing through it:
\(B=UNI/L\)
where μ is the permeability of free space, N is the number of windings, I is the current, and L is the length of the solenoid.
Assuming that the solenoid is long enough that the magnetic field is approximately uniform inside it, the magnetic flux through one winding is:
Φ = B * A
where A is the cross-sectional area of the solenoid.
Substituting the above equations into the expression for the induced emf, we get:
emf = -μ × A × I × N² / L × dI/dt
Plugging in the given values, we get:
emf = -(4π × 10⁻⁷ T·m/A) × π × (0.01 m)² ×(N=1)× (I=40 A)² / (0.1 m) ×(-40.0 A/s)
emf ≈ 10.1 mV

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The weight of a person on the moon given that the mass of the person on Earth is 105 lbm is 17.3 lbf.

Force is defined as the influence that produces a change in motion of an object. The unit of force is newton (N), which is defined as the amount of force that can accelerate a mass of 1 kg at a rate of 1 meter per second squared (m/s²).

The weight of an object is the gravitational force acting on the object. It is directly proportional to the mass of the object and the acceleration due to gravity. The unit of weight is newton (N).

Formula to calculate weight:

Weight (N) = mass (kg) × acceleration due to gravity (m/s²)

Conversion from lbm to kg:1 lbm = 0.453592 kg

Acceleration due to gravity on the moon is 1.622 m/s².

Therefore, Weight (N) = mass (kg) × acceleration due to gravity (m/s²)

Weight on Earth = 105 lbm

= 47.63 kg

Weight on Moon = 47.63 × 1.622

Weight on Moon = 77.19 N

= 17.3 lbf

Therefore, the weight of a person on the moon given that the mass of the person on Earth is 105 lbm is 17.3 lbf.

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Answer:

Your mass is the same no matter where you go in the universe; your weight, on the other hand, changes from place to place. Mass is measured in kilograms; even though we usually talk about weight in kilograms, strictly speaking it should be measured in newtons, the units of force

In summary, mass is a measure of how much matter an object contains, and weight is a measure of the force of gravity acting on the object. ... The amount of gravity is directly proportional to the amount of mass of the objects and inversely proportional to the square of the distance between the objects.

Explanation:

Answer:

its B

Explanation:

Answer:

It's B, No, because the grains are arranged in thin, parallel layers.

Explanation:

I literally took the test 5 seconds ago and it was right.

Answer: I think the answer is symbiotic tell me if I am right

Explanation:

Answer:

Symbiotic

Explanation:

Pathogenic relationships refer to things like microbes or viruses, think along the lines of how diseases spread throughout the body. One party is benefitted but the other is not.

'Microorganism' and 'macroorganism' refer to types of organisms rather than types of relationships.

Answer: A.

current (thumb) to magnetic field (fingers)

Answer:

A. current (thumb) to magnetic field (fingers)

Explanation:

According to the Right-Hand Thumb rule, if we are holding a current- carrying straight conductor in our right hand such that the thumb points toward the direction of current, then the fingers will wrap around the conductor in the direction of the field lines of the magnetic field.

Hope it helps.

If you have any query, feel free to ask.

Based on the experiment conducted, we can infer the following true statements:

A wave can be defined as a disturbance in a medium that progressively transfers (transports) energy from a source to another location, especially without the transportation of mass (matter).

The type of wave that was created is a transverse wave because the medium went up and down.

The estimated wavelength of this transverse wave was equal to 20 meters.

The estimated frequency of this transverse wave was equal to 60 meters.

For the velocity, we have:

Velocity = wavelength × frequency

Velocity = 20 × 60

Velocity = 1200 m/s

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Answer:

Kinetic theory is based on the kinetic energy of moving particles.  In Boyle's Law the temperature is helped constant, so the kinetic energy of the molecules is a constant. The pressure and the volume are inversely related in Boyle's Law. In Kinetic theory pressure is created by the collision of particles.

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Explanation:

The object moved a displacement of 1125 m.

Velocity of an object is defined as the time rate of change of its displacement.

Here,

Velocity of the object, v = 75 m/s

Time taken for travelling, t = 15 s

We know that, the velocity is the displacement covered per unit time.

v = d/t

Therefore, the displacement covered by the object,

d = v x t

d = 75 x 15

d = 1125 m

Hence,

The object moved a displacement of 1125 m.

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Answer:

5 m/s²

Explanation:

Acceleration = change in speed/time taken

20-5=15

15/3= 5 m/s²

The vertical forces cancel, so only the horizontal forces are included in the net force. If the right is positive and the left is negative, then

50 N + (-20 N) = 30 N

so the net force is (B) 30 N to the right.

Answer:

(B) 30 N to the right.

Explanation:

Answer:

a/ oscillating charges

The first National Hockey League (NHL) All-Star Skills Competition was held in 1990.

The National Hockey League (NHL) is a professional ice hockey league composed of 31 teams, 24 of which are based in the United States and 7 in Canada. The NHL is widely considered to be the premier professional ice hockey league in the world and is among the oldest North American sports organisations.

The league operates on a system of promotion and relegation, with the bottom teams in each division being required to compete in a qualifying tournament to retain their place in the league, while the top teams compete in the Stanley Cup Playoffs to determine the NHL champion.

The NHL regular season typically runs from October to April, with each team playing a total of 82 games. The league also holds an All-Star Game, which is a showcase of the league's best players and features various skills competitions. The NHL has a strong following and is popular both in North America and internationally.

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Explanation:

I belive it is 1 or 4

Answer:

I believe the answer is 4

Explanation:

4= none of the above

Answer:

They first spend it on necessities.

The conversion of thermal energy into mechanical energy requires a heat engine. A heat engine is a device that converts heat energy into mechanical work.

It operates by transferring heat from a high-temperature heat source to a lower-temperature heat sink, with the difference in temperature being used to produce mechanical work. Heat engines can be classified into two types: external combustion engines and internal combustion engines. External combustion engines use an external source of heat to create steam, which is used to generate mechanical work.

Examples of external combustion engines include steam engines and Stirling engines. Internal combustion engines, on the other hand, use combustion of fuel inside the engine to generate heat, which is then converted into mechanical work.

Examples of internal combustion engines include gasoline and diesel engines.

In conclusion, the conversion of thermal energy into mechanical energy requires a heat engine, which can be either an external combustion engine or an internal combustion engine. The heat engine operates by transferring heat from a high-temperature heat source to a lower-temperature heat sink, with the difference in temperature being used to produce mechanical work.

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Answer:

Explanation:

The speed of a wave is a product of its wavelength and frequency

Wavelength is inversely proportional to frequency

Longer wavelength electromagnetic waves have lower frequencies, and shorter wavelength waves have higher frequencies.

The answer is shorter

The energy of the characteristic x-ray emitted from a tungsten target 1.36*10³ eV.

The energy of a characteristic x-ray emitted from a tungsten target when an electron drops from an M shell (n=3 state) to a vacancy in the K shell (n=1 state) can be estimated using the equation E =hcZ²Δn²/n². Here Z is the atomic number for tungsten (Z=74) and Δn is the difference between n1, the initial orbital, and n2, the final orbital, (n1 - n2). In this case n1= 3 and n2= 1 giving (3-1=2).

Using the equation E =(hc*74²*2²)/1² = (6.63*10-34*.993*17576)/1= 1.36*10³ eV. Therefore, the estimated energy of the characteristic x-ray emitted from the tungsten target when an electron drops from the M shell (n=3) to a vacancy in the K shell (n=1) is approximately 1.36*10³ eV.

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Answer:

The force of gravity = 40 N

Explanation:

Given that,

The mass of a ball, m = 10 kg

The acceleration due to gravity on the surface of Mars, a = 4 m/s²

We need to find the force of gravity of the ball on Mars. The force of gravity on an object is given by :

F = mg

Substitute all the values,

F = 10 kg × 4 m/s²

F = 40 N

Hence, the correct option is (B).

In 10 moles of carbon, there is approximately 96.5 coulombs of positive electric charge.

To determine the amount of positive electric charge in 10 moles of carbon, we need to calculate the total charge based on the number of moles and the charge per mole.

Given:

Number of moles of carbon (n) = 10 moles

Avogadro's constant (NA) = 6.022 × 10^23 mol^(-1)

Elementary charge (e) = 1.60 × 10^(-19) C

The total positive electric charge (Q) can be calculated using the formula:

Q = n * NA * e

Substituting the given values, we have:

Q = 10 moles * (6.022 × 10^23 mol^(-1)) * (1.60 × 10^(-19) C)

Simplifying the calculation, we find:

Q ≈ 9.65 × 10^4 C

Rounding to one significant figure, we have:

Q ≈ 1 × 10^5 C

Therefore, there is approximately 1 × 10^5 coulombs of positive electric charge in 10 moles of carbon.

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The static friction force on box A and B can be calculated using the equation fs ≤ μs * N.

Where fs is the static friction force, μs is the coefficient of static friction, and N is the normal force acting on the object. For box A, the static friction force is fs = μs * N = 0.4 * (20 kg * 9.8 m/s^2) = 78.4 N. For box B, the static friction force is fs = μs * N = 0.5 * (10 kg * 9.8 m/s^2) = 49 N. Therefore, the static friction force on box A is larger than the friction force on box B (fA > fB). This is because the friction force is directly proportional to the weight of the object and the coefficient of static friction. Box A has a larger weight and a smaller coefficient of static friction than box B, which results in a larger static friction force acting on it to keep it at rest.

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Let the final temperature be "T".

For the piece of copper :

Then the heat of copper :

\(\sf{\dashrightarrow Q_c=m_cc_c\,\Delta\!T_c}\)

\(\sf{\dashrightarrow Q_c =16(T-200)\ J}\)

For copper calorimeter :

Then the heat of copper calorimeter :

\(\sf{\dashrightarrow Q_{cc} =m_{cc}c_{cc}\,\Delta\!T_{cc}}\)

\(\sf{\dashrightarrow Q_{cc} =24(T-25)\ J}\)

For water :

Then heat of water :

\(\sf{\dashrightarrow Q_w=m_wc_w\,\Delta\!T_w}\)

\(\sf{\dashrightarrow Q_w=210(T-25)\ J}\)

By energy conservation, the sum of all these energies should be zero as there were no heat energy change before the process, i.e.,

\(\sf{\dashrightarrow Q_c+Q_{cc}+Q_w=0}\)

\(\sf{\dashrightarrow16(T-200)+24(T-25)+210(T-25)=0}\)

\(\sf{\dashrightarrow 250T- 9050=0}\)

\(\sf{\dashrightarrow T=36.2^{\circ}C}\)

\( \large \underline{\underline{\boxed{\sf T=36.2^{\circ}C}}}\)

____________________________

[Note: in case of considering temperature difference it's not required to convert the temperatures from \(\sf{^{\circ}C}\) to K or K to \(\sf{^{\circ}C}\).]

Answer:

Sir Isaac Newton was an English mathematician, physicist, astronomer, theologian, and author

Explanation:

but he is most importantly known for having formulated the theory of universal gravity

and for having invented the calculus in the mid to late 1660s

Answer:

x = 58.86[mm]

Explanation:

This problem can be solved by means of Hooke's law which tells us that the force is equal to the product of the constant of the spring by the distance that is compressed or stretched. The following equation can be used.

\(F=k*x\)

where:

F = force or weight [N]

k = spring constant = 2*10⁵ [N/m]

x = distance  compressed [m]

The weight can be calculated as the product of the mass by the gravity acceleration.

\(F=m*g\\F=1.2*1000*9.81\\F=11772[N]\)

Now replacing in the Hook's law

\(11772=2*10^{5} *x\\x=0.05886[m]\\x=58.86[mm]\)

Answer:

Dog

Explanation:

The Sirius or Dogstar is the brightest star in Earth's night sky.