PHYSICS HIGH SCHOOL

How do you increase
kinetic energy of an apple

Answers

Answer 1
Answer:
In order to give the apple more kinetic energy than it has right now,
you must make it move faster than it is moving right now.  You could
drop it, roll it, toss it, or gingerly place it in a moving car or airplane.
Whatever method you select, motion ... specifically speed ... is the
key to kinetic energy.

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What is the kinetic energy of a 1.40 kg discus with a speed of 22.5 m/s?

Answers

Kinetic energy = (1/2) (mass) (speed)²

                         = (1/2) (1.4 kg) (22.5 m/s)²

                         =    (0.7 kg)  (506.25 m²/s² )

                         =          354.375  kg-m²/s²  =  354.375 joules .

This is just the kinetic energy associated with a 1.4-kg glob of
mass sailing through space at 22.5 m/s.  In the case of a frisbee,
it's also spinning, and there's some additional kinetic energy stored
in the spin. 

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;

brainly.com/question/12075871

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

Bats use ultrasound in echolocation. This sound is characterized by __low frequencylow amplitudehigh frequencyhigh amplitude

Answers

Bats use high frequency.  Whenever somebody says a quantity is "high",
you have to ask "compared to what ?". In this case, it's compared to human
hearing ... we can't hear bats at all, or if we can, it just sounds like a 'click'.

Answer:

Both use reflected sound waves.

What are the three types of seismic waves?

Answers

primary waves, secondary waves and surface waves, which arrive at seismic recording stations one after another. Both P and S waves penetrate the interior of the Earth while surface waves do not. Due to this, P and S waves are known as "body waves".
Earthquakes generate three types of seismic waves: P (primary) waves, S (secondary) waves and surfacewaves, which arrive at seismic recording stations one after another. Both P and S waves penetrate the interior of the Earth while surface waves do not. Due to this, P and S waves are known as "body waves".

What is the mass of a child if the force of gravity on the child's body is 100 N?

Answers

Gravity is 9.81m/s^2 on earth F=m×g
100N=(x)kg×9.81m/s^2
x=10.19kg or more than 22lbs

All of the following are long-term risks associated with exposure to secondhand smoke EXCEPT:a. increased risk of respiratory illness
b. increased risk of lung cancer
c. change in senses
d. increased risk of cardiovascular disease

In what year were cigarette packages made to include 6 warning labels that mentioned the surgeon general

Answers

All of the following are long-term risks associated with exposure to secondhand smoke EXCEPT:

A. increased risk of respiratory illness

B. increased risk of lung cancer

C. change in senses

D. increased risk of cardiovascular disease

This is the Correct Answer.
The answer is D.
Cardiovascular diseases are a result of a sedentary lifestyle and a poor diet. Secondhand smoke is not a risk factor for CV diseases. The other choice except letter D are long term risks associated with exposure to secondhand smoke. A person should stay away from people who are smokers so as not to obtain these possible complications within the body. Air filters in cigarettes are not present in the air which make chemical exposures at a higher level for people who are secondhand smokers compared to smokers themselves.
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