Why is the unit of momentum called derived unit​

Physics students are required to determine the time it takes a stone to reach the ground below. The most consistent time with the scenario is 3.22 seconds. So, the correct answer is option C. 3.22 seconds.

When a stone is thrown upward, it follows a parabolic trajectory and eventually falls back down to the ground. The time it takes for the stone to reach the ground can be determined by analyzing its vertical motion.

The stone is thrown upward with an initial velocity of 15.0 m/s. As it moves upward, it slows down due to the force of gravity until it reaches its highest point and starts to fall back down. The total time it takes for the stone to reach the ground is the sum of the time it takes for the stone to reach its highest point and the time it takes to fall from the highest point to the ground.

The time it takes for the stone to reach its highest point can be calculated using the equation:

Time = (Final velocity - Initial velocity) / Acceleration

In this case, the final velocity is 0 m/s because the stone comes to a stop at the highest point. The acceleration is -9.8  \(m/s^2\) (assuming the positive direction is upward and the acceleration due to gravity is negative).

Using the equation, we find that the time it takes for the stone to reach its highest point is approximately 1.53 seconds. Since the stone takes an equal amount of time to fall from its highest point to the ground, the total time is approximately 3.06 seconds.

Among the given options, the most consistent time with this scenario is 3.22 seconds (option C), which is the closest to the calculated value of 3.06 seconds.

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Energy is transported from the tropics to the polar regions chiefly by ocean and atmospheric currents.

Ocean currents transport thermal energy from the tropics to the polar regions, while atmospheric currents transport latent and sensible heat from the tropics to the polar regions. These transfers occur through different mechanisms that rely on Earth's rotation, wind patterns, and temperature differences. The primary way in which energy is transported from the tropics to the polar regions is through ocean currents, particularly the ocean conveyor belt. This is a system of currents that circulate in the Atlantic Ocean and are driven by differences in temperature and salinity. Warm water from the tropics flows northward, where it cools and sinks, eventually returning southward at depth. This circulation helps to regulate the climate of both the tropics and the poles. Atmospheric currents also play a role in the transport of energy from the tropics to the polar regions. Warm, moist air rises in the tropics and flows poleward at high altitude, where it cools and descends. This creates a circulation pattern known as the Hadley cell, which drives the trade winds and helps to distribute heat around the globe. In the polar regions, cold, dry air descends and flows equatorward at low altitude, completing the circulation pattern.

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Answer:

F / m = a = G M / R^2            formula for gravitational attraction

a = ω^2 R   formula for centripetal force for an object with radius R

G M / R^2 = ω^2 R equating accelerations

ω = (G M / R^3)^1/2

ω = 2 pi f = 2 pi / P      for circular motion

P = 2 pi (R^3 / (G M))^1/2

R^3 / (G M) = (1.738E6)^3 / (6.67E-11 * 7.36E22)  = 1.07E6

P = 6.28 * 1034 sec = 6500 sec = 1.80 hrs

Answer:

The force that the book exerts down on the table is equal to the force the table exerts upward.

Explanation:

I am 100% positive. That results in balanced forces which is why it does not move. If you did want it to move, you would apply unbalanced forces.

Answer:

4th: "The force that the book exerts down on the table is equal to the force the table exerts upward"

Explanation:

Basically, a book on a table is balanced in terms of forces. Gravity is opposed by the table and there are no forces acting to move the book in any direction. If there was a breeze that was not strong enough to move the book, it is because the force of friction is equal to that provided by the breeze.

The force between two wires 0.50 m long, if there is 0.15m between them and the first wire has 2.0 A has 6.67 × 10 ⁻⁶ N .

Given , length of wire L = 0.50 m

Distance between them  d = 0.15 m

current in the first wire be I₁ = 2.0 A

current in the second wire be I₂ = 5.0 A

                    Force = μI₁ i₂ l / 2 π d

                     4 π × 10⁻⁷ × 2 × 5 × 0.5 ÷ 2π × 0.15

          Force = 6.67 × 10 ⁻⁶ N

When two current-carrying wires are placed parallel to one another, their magnetic fields will interact, creating a force between them. Each wire experiences the same amount of force, but in opposite directions. Even if the conductors carry currents of varying magnitudes, this holds true: currents flowing in the same direction attract the conductors, while currents flowing in the opposite direction repel them.

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Answer:

Since it us the resistance that causes the power output, it might be intuitive to think that more resistance produces more power but as P=I^2 * R one actually needs high current and low resistqnce. That means 75 W has lower resistance and higher current.

Now you may think that making the resistance very low, one gets the most power. Not so, as the circuit has wires, power source etc. All the have their resistance. In theory one gets the maximum power over a resistor when the resistor is half of the total resistance of the circuit. This in practice would be inefficient as one would lose half of the total power elsewhere. In practice circuits have fuses that limit the current and one gets the maximum power at the current the fuse is rated to. So if there is 20 A fuse, the maximum power is 2400 W and the corresponding resistance 6 ohm.

Answer:

w = 219.6 N

Explanation:

w = mg

where w is weight, m is mass in kg, and g is acceleration due to gravity in meters per second squared

in this case, given is

m = 61kg

g = 3.6 m/s^2

By plugging in the given values, you can find the weight of the person on mars

w = 61(3.6)

w = 219.6 N

The formula for calculating density is expressed as

Density = mass/volume

From the information given,

mass of empty pycnometer = 10.2

mass of the same pycnometer with an unknown liquid is 21.8.

Mass of unkown liquid = 21.8 - 10.2 = 11.6

volume of unknown liquid = 7

Thus,

Density = 11.6/7

Density = 1.7 g/ml

If the coil is rotated about its axis which is perpendicular to its plane in counterclockwise direction by a 90° angle, the flux that penetrates the coil (a) increases.

When a circular coil is rotated about its axis which is perpendicular to its plane in counterclockwise direction by a 90° angle, the flux that penetrates the coil changes.

This is because the area of the coil that is perpendicular to the magnetic field increases while the area that is parallel to the magnetic field decreases. Therefore, the flux that penetrates the coil increases.

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The angular momentum of earth is

7×10^33 kgm^2/sec

Given:

mass of earth = 5.98×1024 kg

radius of earth = 6.38×10^6 m

To Find:

angular momentum

Solution:

For earth we have moment of inertia as

I = 2/5mR^2

and angular velocity as ω = 2π/T

Thus angular momentum is given as

L= 2/5mR^2*2π/T

L = 2/5*5.98×10^24*(6.38×10^6)^2*2*3.14/86400s

L = 7 × 10^33 kg/m^2/sec

So, angular momentum of earth is

So, angular momentum of earth is 7×10^33 kgm^2/sec

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OPTION  B IS THE ANSWER

Answer:

The real answer is A 2023 answer -_-

Explanation:

Answer:

Explanation:

We are given information:

If we apply Newton's second law we can calculate acceleration:

F = m * a

a = F / m

a = 25000 / 10000

a = 2.5 m/s^2

Now we can use this information to calculate change of speed.

a = v / t

v = a * t

v = 2.5 * 120

v = 300 m/s

Force is being applied in direction that is opposite to a direction in which space craft is moving. This means that final speed will be reduced.

v = 1200 - 300

v = 900 m/s

Formula for momentum is:

p = m * v

Initial momentum:

p = 10000 * 1200

p = 12 000 000

p = 12 *10^6 kg*m/s

Final momentum:

p = 10000 * 900

p = 9 000 000

p = 9 *10^6 kg*m/s

The angular momentum of of a 3.4- kg uniform cylindrical grinding wheel of radius 23 cm when rotating at 1200 rpm is 2.53 x 10³ kg⋅m²/s.

To solve this problem, we need to use the formula for the angular momentum of a rotating object: L = Iω, where L is the angular momentum, I is the moment of inertia, and ω is the angular velocity.

For a uniform cylindrical object, the moment of inertia is given by I = 1/2 mr², where m is the mass and r is the radius.

We first need to convert the angular velocity from rpm to radians per second:  ω = (2π/60)(1200 rpm) = 125.66 rad/s. Next, we can plug in the values for the mass and radius of the grinding wheel:

I = 1/2 (3.4 kg) (0.23 m)² = 0.088 kg⋅m². Finally, we can calculate the angular momentum:  L = Iω = (0.088 kg⋅m²) (125.66 rad/s) = 2.53 x 10³ kg⋅m²/s.

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Explanation:

The Carbon Cycle and Earth's climate Carbon Dioxide is an atmospheric constituent that plays several vital roles in the environment. It is a greenhouse gas that traps infrared radiation in the atmosphere. it plays a crucial role in the weathering of rocks. it is the carbon source for plants.

Given data

*The initial speed of the driver is u = 24 m/s

*The final speed of the driver is v = 15 m/s

*The given time is t = 12 s

The formula for the automobile's acceleration is given as

Substitute the values in the above expression as

Answer:

d = 18 m

Explanation:

Given that,

The speed of a baseball, v = 36 m/s

We need to find the distance from the mound to home plate if the ball takes 0.5 seconds to leave the pitcher's hand and cross the plate.

Let the distance be d. We can find it using the formula,

Speed = distance/time

or

\(d=vt\\\\d=36\times 0.5\\\\d=18\ m\)

So, the required distance is equal to 18 m.

a. more gravity

This is the answer.

Answer:

I don't understand anything get it or what

To write a program that converts degrees Fahrenheit to degrees Rankine, you can use a simple mathematical formula:

Rankine = Fahrenheit + 459.67

Here is an example of how you could write the program in Python:

python

Copy code

def fahrenheit_to_rankine(fahrenheit):

   rankine = fahrenheit + 459.67

   return rankine

fahrenheit = float(input("Enter temperature in Fahrenheit: "))

rankine = fahrenheit_to_rankine(fahrenheit)

print("Temperature in Rankine:", rankine)

Explanation:

The function fahrenheit_to_rankine takes a temperature in Fahrenheit as input and returns the equivalent temperature in Rankine.

In the function, the temperature in Rankine is calculated by adding 459.67 to the temperature in Fahrenheit. This is the mathematical formula for converting Fahrenheit to Rankine.

The user is prompted to enter a temperature in Fahrenheit using the input function, which returns the input as a string. The input string is then converted to a float using the float function.

The function fahrenheit_to_rankine is then called, passing the temperature in Fahrenheit as an argument. The returned value is stored in the variable rankine.

Finally, the temperature in Rankine is printed using the print function.

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Note that the correct times are t = 0, t = 1/4, t = 1/2. You can tell from the spaces between the two digits. i.e 1&4 and 1&2

Answer:

y(0) = 2.00 cm

y(1/4) = 1.56 cm

y(1/2) = 1.21 cm

Explanation:

This is a very simple exercise, the displacement of the oscillating weight from equilibrium has already been modeled by the equation:

\(y(t) = 2e^{-t} cos 4t\)

Where y = displacement ( in cm)

and t = time (in seconds)

The task is to find the displacement when t = 0, 1/4 and 1/2

When t = 0 s

\(y(0) = 2e^{0} cos 4(0)\\y(0) = 2* 1*1\\y(0) = 2.00 cm\)

When t = 1/4 s

\(y(1/4) = 2e^{-1/4} cos 4(1/4)\\y(14) = 2e^{-1/4} cos (1)\\y(1/4) = 1.56 cm\)

When t = 1/2

\(y(1/2) = 2e^{-1/2} cos 4(1/2)\\y(14) = 2e^{-1/2} cos (2)\\y(1/2) = 1.21 cm\)

If the plane is moving blank 120 km/h, the velocity used to complete the statement is 1. west at 120km/h. and 3. North at 120km/h.

The assertion "A plane is moving at 120km/h" gives data about the speed of the plane. Notwithstanding, to completely depict the movement of an article, both speed and course are required, which together make up speed. In this manner, choices 1 and 3 give guidance alongside the speed, making them reasonable choices to finish the assertion. Choice 2 just gives a subjective depiction of the speed, which isn't adequate to portray speed. Choice 4 just gives data about the sort of speed however provides no data about the guidance. In this manner, choices 1 and 3 are the ones in particular that make a legitimate speed esteem when used to finish the assertion.

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The complete question is:

A plane is moving blank 120km/h.

Which of the following options make a velocity value if used to complete the statement

Select all that apply

1. West at 120km/h.

2. At a low velocity of 120km/h.

3. North at 120km/h.

4. At a cruising velocity of 120km/h.

Given:

• Distance = 150 km

• Speed = 50 km/hr

Let's find the time it will take to cover the distance in minutes.

To find the distance, apply the formula:

Thus, we have:

The time in hours is 3 hours.

To convert the time from hours to minutes, we have:

60 minutes = 1 hour

3 hours = 3 x 60 = 180 minutes

Therefore, it time in minutes is 180 minutes.

ANSWER:

180 minutes

Answer:

U-235

Explanation:

a rare needed compound

We can solve for A and B by substituting suitable values of s.

\((s * x(0) + dx(0)/dt) = A * (s - r_2) + B * (s - r_1).\)

Once we have the values of A and B, we can apply the inverse Laplace transform to obtain x(t).

To solve a simple harmonic oscillator equation using Laplace inversion, let's consider the following second-order differential equation:

\(m * d^{2} x(t)/dt^{2} + k * x(t) = 0,\)

We can solve this equation using the Laplace transform. The Laplace transform of x(t) is given by X(s), where s is the complex frequency variable.

Applying the Laplace transform to the equation, we get:

\(m * (s^{2} * X(s) - s * x(0) - dx(0)/dt) + k * X(s) = 0.\)

Rearranging the equation, we have:

\(s^{2} * X(s) + (k/m) * X(s) = (s * x(0) + dx(0)/dt).\)

Now, we can solve for X(s):

X(s) = (s * x(0) + dx(0)/dt) / (s² + k/m).

To find the inverse Laplace transform of X(s), we need to decompose it into partial fractions.

Let's assume the roots of the denominator s² + k/m are \(r_1\) and \(r_2\):

\(X(s) = A / (s - r_1) + B / (s - r_2),\)

where A and B are constants.

By equating the numerators, we have:

\((s * x(0) + dx(0)/dt) = A * (s - r_2) + B * (s - r_1).\)

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--The complete Question is, Solve a simple harmonic oscillator equation using  Laplace inversion ?--

A micrometer is used to measure the diameter of a length of copper wire. The zero error and scale reading are as shown.The correct answer should be the micrometer.

The micrometer is an instrument that is capable of measuring the component of an object to very high precision. It is used to obtain accurate measurements in engineering.

In the case of the copper wire, the diameter of 0.3 mm was an approximation and a more accurate measure of the diameter would be obtained by using the micrometer.A micrometer is used to measure the diameter of a length of copper wire. The zero error and scale reading are as shown.The correct answer should be the micrometer.

Therefore, A micrometer is used to measure the diameter of a length of copper wire. The zero error and scale reading are as shown.The correct answer should be the micrometer.

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Dispersion forces are a kind of force that is induced by the motion of electrons in a molecule or an atom. Dispersion forces are also known as London dispersion forces.

Dispersion forces are the result of electron motion in a molecule or atom and are also known as London dispersion forces. When electrons move around a molecule, they create temporary dipoles within the molecule, which then leads to attraction between molecules. This attraction is called dispersion forces. The magnitude of dispersion forces depends on the number of electrons in a molecule, and it is directly proportional to the surface area of the molecule.Therefore, the molecule with the largest surface area would be expected to have the largest dispersion forces. This is because the larger the surface area, the more electrons there are to interact with other molecules. Larger molecules will have more electrons and a greater surface area to interact with other molecules. Therefore, larger molecules have larger dispersion forces.The dispersion forces determine the boiling points of the molecules, and the substances with the higher boiling points have higher dispersion forces. Dispersion forces also determine the shape of the molecules, as the molecules with the higher dispersion forces tend to have spherical shapes that minimize the surface area of the molecules.

The magnitude of dispersion forces depends on the number of electrons in a molecule, and it is directly proportional to the surface area of the molecule. Therefore, the molecule with the largest surface area would be expected to have the largest dispersion forces. The dispersion forces determine the boiling points of the molecules, and the substances with the higher boiling points have higher dispersion forces.

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Answer:

Molar mass of NH3=14+3=17g

\(mole = \frac{given \: mass}{molar \: mass} \\ mole = \frac{28}{17} \\ mole = 1.65\)

BRAINLIST

A string with a linear density of 3.00 g/m and a string with a linear density of 5.00 g/m has a mass M1 of 188 g and a mass M2 of 313 g. The dangling block with mass M = 500 g is pulling them tight.

A physical body's mass is its total amount of matter. Inertia, or the body's resistance to acceleration (change of velocity) when a net force is applied, is also measured by this property. The gravitational pull an object has on other bodies is also influenced by its mass. A substance's density, or more specifically, its volumetric mass density, is defined as its mass per unit volume. The most popular representation of density is (the lower case Greek letter rho ).

Mg/2 determines the tension of each string. Thus,

V1 = ((500)(9.80)/2*(3.00)) represents the wave speed in string 1. ^1/2 = 28.6 m/s

And V2 = ((500)(9.80)/2*(5.00)) is the wave speed in string 2.

1/2 = 22.1 m/s

M1 = (M/1 + m1/ m2) = 500/(1 + 5) = 188g M2 = M-M1 = (500 - 187.5) = 313g

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Answer:

The uniy which is accepted all over the world is called SI unit.

Explanation:

The system of measurement that is agreed by the international convention if scientists that is held in paris of France to adopt an international unit is called SI unit unit.

The acceleration of the object will decrease if the mass increases from 5kg to 6kg with a constant force.

Newton's second law of motion states that the acceleration of an object equals the net force acting on the object divided by the object’s mass.

This means that the mass and acceleration of an object are inversely related i.e. the greater the mass of an object, the less it will accelerate when a given force is applied.

For example, doubling the mass of an object results in only half as much acceleration for the same amount of force

According to this question, when the mass of the object increases from 5kg to 6kg, the acceleration will decrease.

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From the graph, the acceleration of the object would stay the same.

From the Newton's second law we can tell that the force that is acting on an object would be directly proportional to the acceleration. We also have to note that the object would accelerate when there is a net force that is acting on the object.

The question says that the mass of the object increases from 5 kg to 6kg and the net force on the object remains the same. The implication of this is that the acceleration would not also change.

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