PHYSICS HIGH SCHOOL

Which countries did President G.W. Bush include in his “axis of evil”?a. North Korea and Iran
b. Cuba and Venezuela
c. Russia and China
d. Egypt and Afghanistan

Answers

Answer 1
Answer:
The answer is A. North Korea and Iran.
Answer 2
Answer: That is correct the answer is (A)North Korea and Iran. 

Related Questions

What is the power of 10 when 157,821 is written in scientific notation?
Which of the following is NOT a model of the solar system?a. Sun-centered c. Modern view b. Earth-centered d. all of the above are solar system models
a car travels 50 kilometers West and 10 minutes. after reaching the destination the car troubles back to the starting point, again taking 5 minutes. What is the average velocity of the car
A baby pushes a toy across the floor with a force of 5 newtons
Calculate the force needed to bring a 1,019-kg car to rest from a speed of 29 m/s in a distance of 118 m

How could rescue workers use squeezing or compressing to get energy to their flashlights during rescue missions?

Answers

Answer:

Explanation:

During rescue missions, different types of energy can be devices for flashlight, this could be human powered energy such as squeezing or compressing. In flashlight electrical energy is converted to light and thermal energy.

A squeezing or compressing to get energy for flashlight can be regarded as "DYNAMO PROCESS" it involves spinning of "fly wheels" into the flashlight through consistent squeezing ,which is connected to a dynamo(Dynamo supply electrical current). Hence the needed light is seen on the bulb of the flashlight.

A squeeze flashlight or dyno torch is a form of mechanically powered flashlight that produces energy through the rotation of flywheel which then turns a dynamo or generator that powers an attached light emitting diode, LED or incandescent bulb when electric current is generated

Where there is need for artificial light, where direct electric power is not available, such as during a rescue operation, rescue workers can produce illumination by continuously pumping the dyno torch during the mission. The squeezing action causes the flywheel to turn, with the turning made to occur between each squeeze, by the flywheel. The rotational energy from the flywheel turns the generator, which produces steady lighting

Learn more about squeeze flashlights here:

brainly.com/question/3825273

A 500 kg compact car and a 1500 kg truck are accelerated equally.which vehicle exerts more force?how many times more?(im guessing the 1500kg truck exerts more force but i don't know how to solve for how many times more)

Answers


The truck doesn't "exert more force".

It TAKES more force to accelerate the truck at the same rate
as the car, because the truck has more mass.

Think: 
In order to move two rocks, you have to push harder on the heavy one
than you do on the lighter one.

How much more ?

In order to produce the same acceleration . . .

                    half as much mass  ===>  half as much force

                   twice as much mass ===> twice as much force

             ten times as much mass ===> ten times as much force

 a 1500-kg truck
     compared to
  a 500-kg car . . . triple the mass ===> triple the force, in order
                                                               to accelerate them equally .
                                                                    

Which type of thermal energy transfer does a wrapping of cotton or plastic reduce the most? O A. Radiation O B. Conduction O C. Convection O D. Translation​

Answers

Answer:

RADIATION

Explanation:

JUST TOOK IT ON APEX

Answer: Translation

Explanation:

Apex

Thanks

A rigid, 2.50 L bottle contains 0.458 mol He. The pressure of the gas inside the bottle is 1.83 atm. If 0.713 mol Ar is added to the bottle and the pressure increases to 2.05 atm, what is the change in temperature of the gas mixture?The initial temperature of the gas is ______ K.

Answers

These are inert gases, so we can assume they don't react with one another. Because the two gases are also subject to all the same conditions, we can pretend there's only "one" gas, of which we have 0.458+0.713=1.171 moles total. Now we can use PV=nRT to solve for what we want.

The initial temperature and the change in temperature. You can find the initial temperature easily using PV=nRT and the information provided in the question (before Ar is added) and solving for T.

You can use PV=nRT again after Ar is added to solve for T, which will give you the final temperature. The difference between the initial and final temperatures is the change. When you're solving just be careful with the units!
 
SIDE NOTE: If you want to solve for change in temperature right away, you can do it in one step. Rearrange both PV=nRT equations to solve for T, then subtract the first (initial, i) from the second (final, f):

PiVi=niRTi --> Ti=(PiVi)/(niR)
 
PfVf=nfRTf --> Tf=(PfVf)/(nfR)

ΔT=Tf-Ti=(PfVf)/(nfR)-(PiVi)/(niR)=(V/R)(Pf/nf-Pi/ni)

In that last step I just made it easier by factoring out the V/R since V and R are the same for the initial and final conditions.

A rigid, 2.50 L bottle contains 0.458 mol He. The pressure of the gas inside the bottle is 1.83 atm. If 0.713 mol Ar is added to the bottle and the pressure increases to 2.05 atm, what is the change in temperature of the gas mixture?

The initial temperature of the gas is

wrong 137

⇒ 122 K.  correct on E.D.G

Soil can best be described as the A. layer of bedrock four layers beneath the Earth's surface.
B. sandy bottom of the ocean's floor.
C. third layer beneath the Earth's surface.
D. loose covering of weathered rocks and decaying organic matter.

Answers

The correct option is D. Soil can best be described as the loose covering of weathered rocks and decaying organic matter. There are different types of soil, the type of soil formed depends majorly on the type of parent rock from which the soil is formed and the amount of organic matter present in the soil.

1. The photon energy for light of wavelength 500 nm is approximately (Show your work).1.77 eV
3.10 eV
6.20 eV
2.48 eV
5.46 eV

2. Which of the following colors is associated with the lowest temperature? Explain your reasoning.
A. Blue
B. Green
C. Yellow
D. Red

3. Which of the following colors has the highest photon energy?
A. Blue
B. Green
C. Yellow
D. Red
Explain your reasoning.

Answers

1)
E=hf=h*c/α
E=6.626*10^-34*3*10^8E=
Other Questions
Copernicus and other astronomers before him thought that celestial bodies followed a _____ orbital path.circular elliptical square
Assume that you have a mass of 50.0kg and earth has a mass of 5.97x10kg.The radius of earth is 6.38x10m.What is the force of gravitational attraction between you and the earth
Tarzan swings on a 31.0 m long vine initially inclined at an angle of 36.0◦ with the vertical. The acceleration of gravity if 9.81 m/s 2 . What is his speed at the bottom of the swing if he a) starts from rest? Answer in units of m/s
If you drop a stone into a hole drilled all the way to the other side of Earth, the stone will _____. A. speed up until it gets to the center of Earth B. slow down until it reaches the center of Earth C. speed up until it reaches the other side of Earth D. stop at the center of Earth