A car with a mass of 1500 kg is traveling at a speed of 30 m/s. Calculate its kinetic energy.step by step pls​​

Answers

Answer 1
Answer:

Explanation:

KE = 1/2 mv²,

where KE is the kinetic energy,

m is the mass,

and v is the velocity.

Given m = 1500 kg and v = 30 m/s:

KE = 1/2 (1500 kg) (30 m/s)²

KE = 675,000 J

KE = 675 kJ


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Equal amounts of water are kept in a cap and in a dish which will evaporate faster ?why

Answers

The water in the dish evaporates quickly as the surface area of dish is greater than the surface area of the cap, which enables the water in the dish to evaporate quicker.
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Most meteor showers are associated with the orbits of

Answers

comets.

Small fragments of meteors, formed by ice and rock mixed consitute the comets.

The answer is B) comets.

Which of the following is not one of the observed characteristics of our solar system?all planets go in the same circular direction
all planets look as though they lie along a flattened circular plane or disk
the Sun and planets rotate in the same direction
all moons orbit planets in a counterclockwise direction

Answers

Our solar system is made up of an ordinary star known as the Sun. All moons orbit planets in a counterclockwise direction are not one of the observed characteristics of our solarsystem.

What is the solar system?

Our solar system is made up of an ordinary star known as the sun, as well as the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

It contains the planets' satellites, as well as countless comets, asteroids, and meteoroids, as well as the interplanetarymedium.

When viewed from the Northpole or the North star Polaris, the Moon and all other typical non-asteroid size moons in our solar system orbit their host planet in a counter-clockwise manner.

To learn more about the solar system refer to the link;

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The answer is: all moons orbit planets in a counterclockwise direction

7.If your driver license is suspended, you may drive only:a. If you obtain an essential need driver license
b. If you have an accompanying licensed driver
c. If you drive on less traveled roads
d. If you get permission from the local police

Answers

You shouldnt drive under any circumstances and the answer would be d

Final answer:

When a driver's license is suspended, typically, one cannot drive. However, one might be able to drive under certain conditions, like obtaining an essential need driver license or a hardship license. Laws vary by location, hence local transportation operating rules must be consulted.

Explanation:

When your driver's license is suspended, under most jurisdictions you are generally not allowed to drive. However, there can be certain exceptions to this rule. The correct answer among the provided options would be (a) If you obtain an essential need driver license. This type of license, also referred to as a hardship or restricted license, may allow you to drive under certain conditions, for instance, for work or medical appointments. It's important to note that laws may vary by location, so it is always important to consult with local legal sources or transportation departments to understand specific regulations and processes related to obtaining conditional driving permissions when your license is suspended.

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How many potassium atoms are in 2 K2CO3?

Answers

(2× 19 ) + (2 × 19 ) = 76

Through which substance will sound travel fastest?
the ground
the ocean
the air

Answers

Sound waves travel fastest through the ground.

What is meant by a longitudinal wave ?

A longitudinal wave is a form of wave in which the medium vibrates parallel to the direction of the wave.

Here,

The displacement of the medium moves with the wave motion in the same direction.

Sound waves are longitudinal waves because, the direction of the energy transport is parallel to the oscillations of the sound waves.

Since, it is created by compressions and rarefactions in the air, sound waves are known as longitudinal waves. The air particles vibrate in a direction that is parallel to the direction of propagation.

The sound waves require a medium to propagate.

Solids and liquids have the quickest sound wave propagation rates, whereas gases have the slowest. Gases are very loosely packed while liquids are not as securely packed as solids. Sound moves through solids much more quickly than it does through gases due to the distance between the molecules.

Hence,

Sound waves travel fastest through the ground.

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Answer: The correct option is the ground.

Explanation:

Sound is a longitudinal wave. In longitudinal wave, the particles vibrate parallel to the direction of the propagation of the wave.

It needs medium to travel. It can travel in solid, liquid and gas.

Sound wave travels faster in solid in comparison to liquid.

It travels slowest in air.

Ground is a denser medium. Here, the sound wave travels faster in comparison to the ocean and the air.

Therefore, the correct answer is the ground.