Remember KE=M*V2/2…
 A model airplane moves twice as fast as another identical model airplane. Compared with the kinetic energy of the slower airplane, the kinetic energy of the faster airplane is​

Answer:

waterproof and transmits light.

Answer:

waterproof and transmits light.

Explanation:

Answer:

In general, once the wire is connected, the two spheres have to be held at equal electric potential (voltage). Since they are of equal size, equal voltage means equal charge. (The voltage is kQ/R on the surface of the sphere — if the two spheres are far apart.)

Explanation:

each sphere has -1c

Answer:

\(3 \times {10}^{8} m {s}^{ - 1} \)

299 792 458 m / s

Answer:

faster than u

Explanation:

Non-crystalline ceramics deform by viscous flow instead of dislocation motion, True

Ceramics are inorganic compounds. They can be non-metallic or solid materials that can be comprised of metals, non-metal or atoms. Ceramics are known are hard and strong in compression but weak in tension and shearing, these materials are also known for their brittle properties.

Ceramics exits in two major types, these are: crystalline ceramics and non-crystalline ceramics. Crystalline ceramics are those that can easily be shaped to situ, formed with powders and sintered to form a solid body.

On the other hand non-crystalline ceramics are more of glass and formed through melting. They have no regular crystalline structure, and also have no slip or dislocations in them

Non-crystalline ceramics when deforming, they allow ions to slide past each other, hence deforms by breaking and reforming bonds. A condition known as viscous flow.

Thus, the statement given is True, option a is correct.

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Answer:

While there is no such thing as 100 percent safe, having nuclear energy is much safer than you think. It's thousands of times safer than conventional coal and other fossil-fuel-derived energy, not to mention the specter of environmental disaster from continued use of carbon-based energy sources.29 may. 2011

Explanation:

I hope it helps you

Answer:

the direction is towards upward.i think.

The jet gains approximately 342 meters in altitude when it moves 1 km through the air at a steady 20-degree climb.

To determine the altitude gained by the jet when it moves 1 km through the air, we need to calculate the vertical displacement using trigonometry.

Given that the jet climbs at a steady 20 degrees, we can use the sine function to find the vertical displacement.

Vertical displacement = Distance * sin(angle)

In this case, the distance is 1 km (1000 m), and the angle is 20 degrees.

Vertical displacement = 1000 m * sin(20 degrees)

Using a calculator, we find that sin(20 degrees) is approximately 0.342.

Vertical displacement ≈ 1000 m * 0.342 ≈ 342 m

Therefore, the jet gains approximately 342 meters in altitude when it moves 1 km through the air at a steady 20-degree climb.

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Friction between the moving parts transforms some of the pendulum's mechanical energy into forms of energy.

The pendulum stops moving because all of its mechanical energy has been transformed into thermal energy and sound energy.

Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.

Because all of the pendulum's mechanical energy has been converted into thermal and acoustic energy through friction between the moving elements, the pendulum stops swinging.

Thus, the correct answers are options C and option D.

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The thermal energy created when the crate slides at the given distance is 6,192.8 J.

The given parameters;

The thermal energy created is the energy lost due to friction and it is calculated as follows;

\(W = \mu F_n d\)

where;

\(\mu\) is the coefficient of friction

The coefficient of friction is calculated as;

\(\mu = tan(\theta)\\\\\mu = tan(35)\\\\\mu = 0.7\)

The work done against friction is calculated as;

\(W = \mu F_n d\\\\W = \mu (Wcos\theta ) d\\\\W = 0.7 \times 900 \times cos(35) \times 12\\\\W = 6,192.8 \ J\)

Thus, the thermal energy created when the crate slides at the given distance is 6,192.8 J.

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Answer:

2 minutes or 120 seconds

Explanation:

The answer is 2 minutes or 120 seconds because 36 km is 36000 m and 36000 divided by 300 is 120, so the answer is 120 seconds, and converted to 2 minutes. Hope it helps!

A magnetic force can be created by moving an electric charge.

A magnetic force, is an attraction or repulsion that arises between electrically charged particles because of their motion.

One way a magnetic force can be created is by moving an electric charge. When an electric charge moves, it generates a magnetic field, and the magnetic field can interact with other magnetic fields to create a magnetic force.

For example, when an electric current flows through a wire, a magnetic field is generated around the wire, and the magnetic field can interact with the magnetic fields of other nearby wires or magnets to create a magnetic force.

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Answer:

150

Explanation:

30 times 5 = 150 i think

Answer:

the baby would still be 30 kg on the moon because that’s mass, not weight.

However, it will feel like 5 kg, because the acceleration is 1/6 and the force is 1/6 and the actual weight (product of mass and acceleration will be 1/6).

The child has a mass of 30 kg on earth and has one-sixth gravity on the moon will have a weight of 50 kg on the moon.

Gravity is a fundamental interaction that causes all objects with mass or energy to attract one another. The weakest of the four fundamental interactions is gravity, by far. The Moon's gravity causes sublunar tides in the oceans, just as gravity on Earth imparts weight to physical objects.

Given:

The mass of the child (m) = 30 kg,

The gravity on the moon (G) = 1/6 of the earth.

To calculate the weight of the child on the moon, use the formula given below,

F = m × a

Here

\(F\) is the weight, \(m\) is the mass and \(a\) is the gravity on earth, gravity on earth \(10\ m/s^2\).

Substitute the values

\(F=30*10/6\)

\(F = 50\ kg\)

Therefore, the weight of a child on the moon is 50 kg.

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Answer:

6.71 m/s magnitude

Explanation:

d = 1/2 a t^2

1.48 = 1/2 (9.81)(t^2 )    t = .549 s

Vertical velocity is given by

vf = at

      = 9.81 ( .549) = 5.39 m/s   VERTICAL velocity

Crazy cat went  horizontally 2.2 m in .549 s  =  4 m/s   horizontal velocity

Total velocity magnitude =  sqrt (4^2 + 5.39^2) = 6.71 m/s

When you see the error message "could not find angular material core theme. most material components may not work as expected," it means that the Angular Material theme is missing, and the application is having difficulty displaying Material components.

Here are some steps to resolve this issue:

1. You should first ensure that Angular Material has been installed in your application. You may use the following command to install Angular Material:ng add ("at" symbol)angular/material

2. Then, import the necessary styles in the styles.scss file to include the Angular Material theme.

Once you've completed these steps, restart your server and see if the error has been resolved. The Material Design components should now display correctly.

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The number of degrees of freedom of a vibrating system depends on the number of coordinates used to describe the position of each mass. Thus, the correct option is (B).

Degrees of freedom can be explained as the number of independent ways in which a system can move. In general, a vibrating system has several degrees of freedom. For instance, a system with N particles moving in three dimensions will have 3N degrees of freedom.

The degrees of freedom of a vibrating system depend on the number of coordinates used to describe the position of each mass. Therefore, the answer is option (B). The formula to calculate the degrees of freedom in a system with N particles is:

df = 3N - C

Where

df is the number of degrees of freedom and

C is the number of constraints.

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The average speed is  26.7 Km/s

Average speed is the total distance traveled by an object divided by the time taken to travel that distance. It is a measure of how fast an object travels over a given distance, on average.

The formula for average speed is:

Average speed = total distance traveled / time taken

We know that;

Speed = Distance/Time

We have to note that;

Distance =  7. 00 x 10^8 km

Time = 303 * 24 * 60 * 60

= 7. 00 x 10^8 km/303 * 24 * 60 * 60

= 26.7 Km/s

The speed that we find is 26.7 Km/s

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thats a hella slow plane

Over the first 100. m, the driver accelerates from rest to a speed v such that

v² - 0² = 2 (13.2 m/s²) (100. m)

⇒   v ≈ 51.4 m/s

For the next 0.500 s, the driver maintains this speed and covers a distance of

(51.4 m/s) (0.500 s) ≈ 25.7 m

The remaining length of track is

180. m - 100. m - 25.7 m = 54.3 m

and the driver must have a minimum acceleration a such that

0² - (51.4 m/s)² = 2a (54.3 m)

⇒   a ≈ -24.3 m/s²

Answer:

because of the idea that like charges get repulsion as a force.

Explanation:

because you wrap the ball with foil, the negative charges will leave the foil and go into the ball by induction. This leaves the foil as a positively charged particle since its electrons left it for the ball, making the ball a negatively charged particle. but if you bring the negative charge near the foil, the electrons will transfer from that and go into the foil, making it negatively charged. Now, because the ball and the foil have the same charge, they repel. the foil flies off.

Tidal volume is the volume of air inspired or expired during normal respiration. The tidal volume is typically about 500 milliliters during resting breathing, and it can increase to more than 3,000 milliliters during exercise.

The inspiratory capacity is the maximum amount of air that can be inhaled following normal expiration.Tidal volume is the volume of air that moves in and out of the lungs with each breath. It is an essential component of the pulmonary system, and it is used to measure the lung's capacity. Tidal volume can be calculated by dividing the total volume of air moved in and out of the lungs by the total number of breaths taken.

The inspiratory capacity is the volume of air that can be inspired following a normal expiration. This is the maximum amount of air that can be inhaled, and it is used to measure the lung's overall function. The inspiratory capacity is typically measured by a spirometer, which measures the volume of air moved in and out of the lungs during breathing.The figure attached shows a graph of the volume of air breathed over time. The tidal volume is represented by the width of each breath, while the inspiratory capacity is the maximum height that each breath reaches.

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Answer:

The basic law of magnetism is that like pole repel one another and unlike pole attract one another

Answer:

\(f^{-1}(-4) = \frac{1}{10}\)

Explanation:

Firstly finding \(f^{-1}(x)\)

So,

\(f(x) = 10x-5\)

Substitute \(y = f(x)\)

\(y = 10x-5\)

Exchange the values of x and y

\(x = 10y-5\)

Solving for y

\(x = 10y-5\)

Adding 5 to both sides

\(10y = x+5\)

Dividing both sides by 10

\(y = \frac{x+5}{10}\)

Replace \(y = f^{-1}(x)\)

\(f^{-1}(x) = \frac{x+5}{10}\)

For x = -4

\(f^{-1}(-4) = \frac{-4+5}{10}\)

\(f^{-1}(-4) = \frac{1}{10}\)

Answer:

\(\frac{1}{10}\)

Explanation:

f(x) = y (output)

y = 10x - 5

Switch variables.

Solve for y.

x = 10y - 5

x + 5 = 10y

x/10 + 1/2 = y

\(f^{-1}(x)\) = 1/10x + 1/2

Put x as -4.

1/10(-4) + 1/2

-4/10 + 1/2

-4/10 + 5/10

= 1/10

Answer:

On Edg 2021, the answer was "B = The moon's orbital period and distance from Earth"

Explanation:

I hope this is correct for you, if it isn't I am very sorry. Good luck! :)

Newton's principles of motion and the universal law of gravitation can be used to derive Kepler's third law. Make the centripetal force equal to the force of gravity. The following expression, which may also be written as P2=42a3GM, can be obtained by inserting an expression for the planet's velocity: GMr=4r2P2. Thus, option B is correct.

Newton demonstrated that the force that causes something to fall toward the ground, like an apple, is the same force that causes the moon to orbit the Earth. The Sun, as well as any other star and its satellites, are affected by this universal force.

Newtonian physics and Kepler's laws serve as the foundation for planetary motion and orbital laws. Because these fundamental rules govern everything in the cosmos, they also govern how planets and artificial satellites move.

Therefore, If two things experience the same acceleration when the same force is applied to them, then they have the same inertial mass. Newton's second law makes use of the same mass.

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Answer:

The base unit for time is the second (the other SI units are: metre for length, kilogram for mass, ampere for electric current, kelvin for temperature, candela for luminous intensity, and mole for the amount of substance). The second can be abbreviated as s or sec.

Explanation:

Answer:

solution

given,

mass(m)=5040kg

kinetic energy(ke)=493,900

velocity(v)=?

\(ke = \frac{1}{2} mv {}^{2} \\ 493900 = \frac{1}{2} \times 5040 \times v {}^{2} \\ 493900 = \frac{5040v {}^{2} }{2} \\ 493900 = 2520v {}^{2} \\ v {}^{2} = 196 \\ v = \sqrt{196} \\ v = 14ms {}^{ - 1} \)

When an object moves from one point to other point, it possess the energy which is called the Kinetic energy of the object.

The velocity of he bus is 14 m/s.

Given that, a bus travelling through town, with a mass of 5040 kg and kinetic energy of  493,900 J.

So the kinetic energy expressed by the formula given below.

\(k=\dfrac {1} {2}mv^2\)

Where, \(k\) is the kinetic energy in joules, \(m\) is the mass of object in kilograms and \(v\) is the velocity of the object in meter per second.

So the velocity of the bus can be calculated by substituting the values in above formula.

\(493900=\dfrac{1}{2}\times5040\times v^2\)

\(v^2=196\\\\v=\sqrt{196}\\v=14\;\rm m/s\)

The velocity of he bus is 14 m/s.

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