A marble is thrown horizontally with a speed of 15.0 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle of 65.0° with the horizontal. From what height above the ground the marble was thrown. How far from the base of the building, did the marble land?

Answers

Answer 1

Answer: The answer is 52.79 m.

I used this formula to get the formula for Vy:
v^2=vi^2+2(a)(x)
And got
Vy=square root (19.6 h)

Then I used that and put it in this formula:

tan(65) =Vy/Vx

tan(65) = square root (19.6 h)/15.0

Then I rearranged it to:

h=[(15.0)(tan65)]/19.6

h=52.79 m

Answer 2

Answer: The answer for this question is 52.79

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The volume of a gas is 605 liters at 27.0°C. The new temperature is -3.0°C. What is the new volume?-67.2 L
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Answers

According to the Charle's law, the new volume of gas is -545 L when the pressure is constant.

What is Charle's law?

Charles law is an experimental gas law which provides description about the behavior of gases which tend to expand on heating.It states that, at constant pressure, the temperature is in direct proportion with the volume that is,V∝T or V₁/T₁=V₂/T₂.The relation between volume and temperature is linear as the temperature increases volume also increases.

The graph of volume versus temperature is a straight line passing through the origin.It was formulated in the year 1780 by scientist Jacques Charles.

The new volume of gas is obtained by substituting values in the formula V₂=605×(-270)/300=-545 L.

Thus, the new volume of gas is -545 L.

Learn more about Charle's law,here:

brainly.com/question/21184611

#SPJ2

from p1v1/t1 = p2v2/t2
pressure unchanged ... cancelled out
v1=605 , t1=27C = 300K,
t2=-3C = 270K
***remember temperature must be in Kelvin
we got
605/300 = v2/270
v2 = 545

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Answers

Answer : The given statement is True.

Explanation -

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In case of stars, four hydrogen nuclei combine with each other to form a helium nucleus with a release of 26 Mev per cycle.

Thus, nuclear fusion occurs in stars is true statement.

Stars are powered by nuclear fusion in their cores, mostly converting hydrogen into helium. The production of new elements via nuclear reactions is called nucleosynthesis. A star's mass determines what other type of nucleosynthesis occurs in its core (or during explosive changes in its life cycle). READ THIS AND YOU WILL UNDERSTAND I THINK IS TRUE

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Answers

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Answers

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