PHYSICS HIGH SCHOOL

The earth is the _____ largest planet.
third
fourth
fifth
sixth

Answers

Answer 1
Answer:

Answer: The earth is the fifth largest planet in the solar system.

Explanation:

We know that,

Jupiter is the first largest planet, Saturn is the second largest planet, Uranus is the third largest planet, Neptune is the fourth largest planet, Earth is the fifth largest planet and Venus is the sixth largest planet in the solar system.

Hence, The earth is the fifth largest planet in the solar system.

Answer 2
Answer: The earth is the fifth largest planet in our solar system.

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Which of the following elements are non-reactive because their outer electron energy levels are full?A. Aluminum
B. Carbon
C. Krypton
D. Uranium

Answers

It would be Krypton, one of the noble gases. 

This image shows the direction of the flow of water through a constricted pipe. Which of the following happens as you move from position A to position B in the water pipe? A.The velocity of the water decreases.
B.The pressure of the water decreases.
C.The flow rate of the water decreases.
D.The density of the water increases.

Answers

The flow rate of the water decreases as the cross section is decreases. So, the correct option is C.

What is Bernoulli's equation?

Bernoulli’s principle states that the total mechanical energy of a moving fluid, which includes the gravitational potential energy of height, the energy associated with fluid pressure, and the kinetic energy of fluid motion, remains constant.

The formula for Bernoulli’s principle is given as follows:

p+(1)/(2) pv^2+ pgh= constant

From the equation of continuity for incompressible fluids which is Bernoulli's equation

a v = constant

where, a is the area and v is the velocity.

Pressure is inversely proportional to the velocity.

a_Av_A= a_Bv_B

From the image we can see that area of cross-section at A is greater than at B,

a_A > a_B

thus,

v_A < v_B

which means velocity of water will increase at B and water pressure will decrease.

Hence, the correct option is C, i.e. the flow rate of water decreases.

Learn more about Bernoulli's equation, here:

brainly.com/question/11876508

#SPJ2

C. The flow rate of the water decreases

A shorter electromagnetic wave is _____. more powerful less powerful hotter colder

Answers

Answer

more powerful 

Explanation
Electromagnetic waves are waves that do not require material medium for propagation. For example x-rays, UV and gamma rays.

From the wave equation, V= λf, when the wavelength is short the frequency is high. 
Frequency determines the intensity of the wave. When high the frequencies are high the waves has more penetrating power, hence more powerful. 

Answer:

More powerful

Explanation:

I answered it and got it right.

Mary walked north from her home to Sheila's home, which is 4.0 kilometers away. Then she turned right and walked another 3.0 kilometers to the supermarket, which is 5.0 kilometers from her own home. She walked the total distance in 1.5 hours. What were her average speed and average velocity?

Answers

It would be 5.666667 km per hour.
well her speed and velocity are the same 8 kilometers per hour

Money is useful to people because it is __________.Select one of the options below as your answer:a. a medium of exchange
b. prestigious
c. nice to look at
d. something that makes you feel good

Answers

a. A medium of exchange ....Hope am right !!!
The answer is A because money is a form of barter in a sense.

Doing a warmup before exercise is important because it

Answers

Doing a warm-up before exercise is important because it strengthens your body and gets your body ready for the exercise you are about to do. If you do not do a warm-up, your body may grow tired a bit more quickly.

Hope this helped!
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