PHYSICS
MIDDLE SCHOOL

Answer:

Answer:

Movement

Explanation:

Kinetic energy is the type of energy that object obtains when being in motion. therefore Kinetic energy is the energy an object has due to it's movement!

Answer:

Answer:

Motion, I believe.

Explanation:

COLLEGE

Two objects form a closed system. One object, which is at 400 K, absorbs 25.0 kJ of heat from the other object,which is at 500 K. What is the net change in entropy ΔSsysΔSsysDeltaS_sys of the system? Assume that the temperatures of the objects do not change appreciably in the process

Explanation:

The given data is as follows.

= 400 K, = 500 K,

= 25 kJ = 25000 J (as 1 kJ = 1000 J)

Now, we will calculate the change in entropy as follows.

Putting the given values into the above formula as follows.

=

= 250 J/K

Hence, we can conclude that change in entropy is 250 J/K.

HIGH SCHOOL

Match each branch of science with a related career. A. Earth science

B. Physical science

C. Life science

D. Space science

Geologist

Chemist

Astronaut

Ecologist

The branch of science can be related as,

A. Earth science - Geologist

B. Physical science - Chemist

C. Life science - Ecologist

D. Space science - Astronaut

How the field of career in the science is related?Earth Science:

The branch of science that can be related with the study of earth and its atmosphere i.e., Geology, metrology, etc..

The profession is said to be as Geologist.

Physical Science:

The branch of science that can be related by the study of physics, chemistry, Biology, etc.,..

The profession can be physicist, chemist, etc..

Life science:

The branch of science studied or learned by Biology, environmental science, daily life, etc.,

The field of profession is ecologist.

Space science:

The study can be done throughout the field of Astro science.

The profession is said to be Astronaut.

Learn more about branch of science,

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earth science is geologist

physical science is chemist

life science is ecologist

space science is astronut

MIDDLE SCHOOL

Three Difference between wavelength and frequency ?

Hi,

Wavelength:

1.Wavelength measures the distance from one point of a wave to the same point on an adjacent wave.

2.Wavelengths are measured in nanometres.

3.The wavelength of the wave is inversely proportional to the energy of the wave.

Frequency:

1.Frequency represents how many waves are produced from the source per second.

2.Frequencies are measured in hertz or waves per second.

3.The frequency is linearly proportional to the energy of the wave.

Hope this Helps you.

Wavelength:

1.Wavelength measures the distance from one point of a wave to the same point on an adjacent wave.

2.Wavelengths are measured in nanometres.

3.The wavelength of the wave is inversely proportional to the energy of the wave.

Frequency:

1.Frequency represents how many waves are produced from the source per second.

2.Frequencies are measured in hertz or waves per second.

3.The frequency is linearly proportional to the energy of the wave.

Hope this Helps you.

MIDDLE SCHOOL

Choose each that apply Which ones of the following are designed to interrupt the current flow of electricity when unsafe conditions arise

•gfcis(ground fault circuit interrupters

•transformers

•circuit breakers

•regulators

•fuses

Answer:

Circuit breakers

Explanation:

This is an automatic device designed for stopping the flow of current in an electric circuit as a safety measure.

HIGH SCHOOL

The electrons that produce the picture in a TV set are accelerated by a very large electric force as they pass through a small region in the neck of the picture tube. This region is 1.5 cm in length, and the electrons enter with a speed of 1 × 105 m/s and leave with a speed of 2.5 × 106 m/s. What is their acceleration over this 1.5 cm length?

The acceleration given the initial and final velocity and the distance can be calculated through the equation,

a = ((Vf)² - (Vi)²) / 2d

where d is the distance, Vf is the final velocity, Vi is the initial velocity and a is the acceleration.

Substituting the known values,

a= ((2.5 x 10⁶ m/s)² - (1 x 10⁵ m/s)²) / 2 (15/100)

a = 2.08 x 10¹³ m/s²

ANSWER: a = 2.08 x 10¹³ m/s²

a = ((Vf)² - (Vi)²) / 2d

where d is the distance, Vf is the final velocity, Vi is the initial velocity and a is the acceleration.

Substituting the known values,

a= ((2.5 x 10⁶ m/s)² - (1 x 10⁵ m/s)²) / 2 (15/100)

a = 2.08 x 10¹³ m/s²

ANSWER: a = 2.08 x 10¹³ m/s²

COLLEGE

3. What is the bandwidth of a signal composed of frequencies from 60 Hz to 600 Hz?

The bandwidth of the given signal composed of frequencies from 60 Hz to 600 Hz is equal to 540 Hz.

What is bandwidth?Bandwidth can be described as the difference between the upper and lower frequencies in a continuous band. Bandwidth is measured in hertz and refers to passband bandwidth or baseband bandwidth. Passband bandwidth can be described as the difference between the upper and lower cutoff frequencies of a signal spectrum.

Two different measures of relative bandwidth are in common use: fractional bandwidth and ratio bandwidth .

where and are the upper and lower frequency limits respectively of the given band.

Given the lower frequency = 60 Hz

The upper frequency of the signal = 600 Hz

Bandwidth = 600 - 60 = 540 Hz

Therefore, the bandwidth of a signal composed of frequencies from 60 Hz to 600 Hz is 540 Hz.

Learn more about bandwidth, here:

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Answer:

540 Hz

Explanation:

600 Hz - 60 Hz = 540 Hz

MIDDLE SCHOOL

If the bug has a mass of 0.05 kg and accelerates at 2 m/s2 whats the net force on the bug

Force = (mass) x (acceleration) = (0.05 kg) x (2 m/s²) = 0.1 Newton.

MIDDLE SCHOOL

How could sea level rise affect our lives here in the Bay Area?

Well, day-to-day life in San Francisco, San Rafael, San Mateo, Oakland, Hayward, Redwood City, Union City, Fremont, Palo Alto, Milpitas, Mountain View, Cupertino, and even Santa Clara and San Jose would probably be pretty different if those places were all under water.

HIGH SCHOOL

The law of universal gravitation states that any two objects in the universe, without exception, a.

attract each other.

b.

repel each other.

c.

combine to provide a balanced force.

d.

create friction.

A. attract each other.

The Law of Universal Gravitation discusses the phenomenon of gravity. Remember that gravity is the force that keeps us on Earth; the Earth pulls us down, and our bodies pull back. Gravity is the force of attraction, so the correct answer is a).

The Law of Universal Gravitation discusses the phenomenon of gravity. Remember that gravity is the force that keeps us on Earth; the Earth pulls us down, and our bodies pull back. Gravity is the force of attraction, so the correct answer is a).

Answer:

A. Attract each other

Explanation:

Your welcome (;(: