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SVETLANKA909090 [29]
4 years ago
12

What is the second most abundant element in the universe?

Physics
1 answer:
madreJ [45]4 years ago
4 0
The answer is h<span>elium.</span>
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A fire hose held near the ground shoots water at a speed of 6.5 m/s. at what angle(s) should the nozle point in order that the w
VladimirAG [237]
 <span>The trajectory (parabola) for a "particle" of water follows from: 


h(t) = v(0) sin(angle) t - 1/2 g t^2 


x(t) = v(0) cos(angle) t 


From the second equation t = x / (v(0) cos(angle) ) 
and substitution in the first to eliminate t gives the parabola h(x): 


h(x) = x tan(angle) - (g/(2v(0)^2 cos(angle)^2) x^2 


h(x) = 0 is solved by x=0 (where the trajectory starts) and at 


x = 2 v(0)^2 tan(angle) cos^2(angle) / g 


x = 2 v(0)^2 sin(angle) cos(angle) / g 


x = v(0)^2 sin(2 angle) / g [[ using sin(2 ) = 2 sin(s) cos(s) ]] 


For the first question (the 2.0m distance question) you have therefore to solve for angle the equation 

2.0= 2*(6.5)^2 sin(2 angle) / 9.81 


sin(2 angle) = 0.23

angle = 1/2 * arcsin(0.23) = 6.65 degrees 


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
3 0
4 years ago
Most subcultures do not reject all of the values and practices of the larger society. Please select the best answer from the cho
iren [92.7K]
<h2><u>Answer:</u></h2>

The statement is True.

<h3><u>Explanation:</u></h3>

A subculture is a gathering of individuals inside a culture that separates itself from the parent culture to which it has a place, frequently keeping up a portion of its establishing standards.

Subcultures build up their own standards and qualities with respect to social, political and sexual issues

6 0
4 years ago
Read 2 more answers
Which statement or statements accurately describe characteristics of subsidized Stafford loan?
adelina 88 [10]
C.) I and II

Hope this helps!

8 0
3 years ago
Mr. Beall paddles his canoe at 8.0 m/s North in a river that flows at 6.0 m/s to the South. What is the magnitude and direction
kifflom [539]

Answer:

2 /s north

Explanation:

Given that,

Velocity due North is 8 m/s and due south is 6 m/s

We need to find the magnitude and the direction of the resulting velocity.

Let North is positive and South is negative. When two velocities are in opposite direction, they adds up. So,

v=8+(-6)\\\\v=2\ m/s

It is positive. So, it is in North direction.

3 0
3 years ago
What is a net force on an object that has a mass of 20.0 kg, an applied force of 100 n moving on a surface with a friction coeff
sergiy2304 [10]

The net force on the object as described is; 58.84N

Two forces acting on the object are;

  • The <em>applied force and the frictional force.</em>

In essence; the frictional force can be evaluated as;

  • Frictional force; = coefficient × Weight of object.

  • Frictional force = 0.21 × 20 × 9.8.

  • Frictional force = 41.16N

  • The Net force = Applied force - frictional force

  • Net force = 100 - 41.16N

Net Force = 58.84 N.

Read more:

brainly.com/question/94428

5 0
3 years ago
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