PHYSICS HIGH SCHOOL

Scientists have found ancient rock formations dating to the late Proterozoic eon in South America. These ancient rocks can be found from the eastern edge of South America's continental shelf, which extends just off the coast of Brazil, to the interior of the continent. This general location is indicated by a green circle on the map below. Scientists have also found rock formations made out of the same type of rock and from the very same eon at another location. The location of this second group of rock formations strongly supports the current theory of plate tectonics.

Where is the second rock formation most likely located?

Answers

Answer 1

Answer:

Answer:

that not the answer the answer is off the cost of Africa

Explanation:

Answer 2

Answer:

Answer: Australia

Explanation:

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How far can light travel in one year?A. 30 million km
B. 10 trillion km
C. 300,000 km
D. 100 billion km

Answers

10 trillion km is the corrct asnwer

Answer:

B. 10 trillion km

Explanation:

“ It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. ”

A plane leaves the airport in Galisteo and flies 170 km at 68.0° east of north; then it changes direction to fly 230 km at 36.0° south of east, after which it makes an immediate emergency landing in a pasture. When the airport sends out a rescue crew, in which direction and how far should this crew fly to go directly to this plane?

Answers

Answer:

The direction will be $84.86^\circ$ and the distance 250.75km.

Explanation:

Let's say A is the displacement vector which represents the first 170km and B the one for the next 230km. Then the components of these vector will be:

$A_x=170cos(68^(\circ))\n A_y=170sin(68^\circ)\n\nB_x=230cos(-36^\circ)\nB_y=230sin(-36^\circ)$

The vector which point from the origin to the final position of the plane will be R=A+B. We sum components on x and y independetly (vector property):

$R_x=A_x+B_x=170cos(68^(\circ))+230cos(-36^\circ)=63.68km+186.07km=249.75km$

$R_y=A_y+B_y=170sin(68^\circ)+230sin(-36^\circ)=157.62km-135.19km=22.43km$

If $\theta$ is the direction of R then:

$tan(\theta )=(R_x)/(R_y)$ ⇒ $\theta = arctan((R_x)/(R_y))$ ⇒ $\theta = 84.86^\circ$ .

The distance will be given by the magnitud of the vector R:

$R=√(R_x^2 + R_y^2)$ ⇒ $R=√(R_x^2 + R_y^2) = 250.75$ .

Aiden takes 0.10s to throw a baseball, which leaves his hand with a velocity of 49m/s. The balls acceleration is

Answers

Since the ball was not moving before it let Aiden's hand, the formula used to calculate the acceleration is
$a = (v)/(t)$
, where a is acceleration, v is velocity and t is the time. We put them in the formula and get
$a = (49)/(0.1) \n a = (490)/(1) \n a = 490$
The acceleration is 490 m/s^2

An equilibrium constant is not changed by a change in pressure
a. True
b. False

Answers

Answer:True

Explanation:In an ideal situation, equilibrium constants cannot be altered if you change the pressure of a system. However, only change in temperature can result to change in equilibrium constants. If there are the same value of molecules on either side of the equation, then a change of pressure is insignificant to the position of equilibrium.

Hi There! :)

An equilibrium constant is not changed by a change in pressurea. True
b. False

False! :P

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=

How does ice float on water?

Answers

a substance floats of it is less dense, or has less mass per liquid volume than other components than the mixture.

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PLEASEEE HELP, thank you :)