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3 years ago

What is the ACT/SAT for

SAT

2 answers:

const2013 [10]3 years ago

8 0

To help you get into college

baherus [9]3 years ago

3 0

Answer:

It tests you on the stuff you learned in high school and also many collages require require it.

Explanation:

Hope this helps!

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determine the wavelength of an electron that has a kinetic energy of 1.15 × 10^{-19} j. report your answer in units of nm.

Ira Lisetskai [31]

Answer:

The electron has a wavelength of 1448 nanometers.

Explanation:

The wavelength of the electron can be determined by means of the de Broglie wavelength.

5 0

3 years ago

Alfred Wegener suggested that earth’s continents are moving. Which evidence supports this theory?

Goshia [24]

Continental Drift was his theory

The continents were separating farther and farther from each other so he came up with the theory that were drifting away from each other but didn’t have proof of how

7 0

4 years ago

Read 2 more answers

the height of a bottle rocket, in meters, is given by the function s(t)=−9t2+103t+403. find the average velocity of the bottle r

zaharov [31]

The average velocity of the bottle rocket are two given time intervals is 30 m/s and 20 m/s respectively, while the instantaneous velocity at 4.5 seconds is 22 m/s.

The given parameters;

s(t) = -9t² + 103t + 403
time interval (4.499, 4.5), and (4.5, 4.501)

The average velocity of the bottle rocket over the intervals is calculated as follows;

when the interval = [<em>4.499, 4.5</em>]

$s(4.499)= -9(4.499)^2 + 103(4.499) + 403 = 684.22 \ m\\\\s(4.5) = -9(4.5)^2 + 103(4.5) + 403 = 684.25 \ m$

$v = \frac{\Delta \ s}{\Delta \ t} = \frac{684.25 - 684.22}{4.5 - 4.499} = 30 \ m/s$

when the interval = [<em>4.5, 4.501</em>]

$s(4.5) = -9(4.5)^2 + 103(4.5) + 403 = 684.25 \ m\\\\s(4.501) = -9(4.501)^2 + 103(4.501) + 403 =684.27 \ m\\\\v= \frac{684.27 - 684.25}{4.501-4.5} \\\\v = 20 \ m/s$

The instantaneous velocity of the bottle rocket at time t=4.5;

$v = \frac{d \ s(t)}{dt} = -18t + 103\\\\v(4.5) = -18(4.5) + 103\\\\v(4.5) = 22 \ m/s$

Thus, the average velocity of the bottle rocket are two given time intervals is 30 m/s and 20 m/s respectively, while the instantaneous velocity at 4.5 seconds is 22 m/s.

Learn more here: brainly.com/question/25009886

7 0

2 years ago

The article recommends you heavily consider your expected starting salary after graduation. Why do you think this is an importan

Alona [7]

The article recommendation is an important factor to keep in mind when making a decision because the starting salary is not always the best

<h3>What does the article recommend?</h3>

The article tries to encourage the student on the fact that their first salary may not be sufficient for their need at initial stage.

The article explains that the salary might cause financial stress until they goes up, hence, they have to be careful when taking this into consideration

In conclusion, the article recommendation is an important factor to keep in mind when making a decision because the starting salary is not always the best