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ZanzabumX [31]
3 years ago
10

*̶*̶*̶G̶I̶V̶E̶A̶W̶A̶Y̶*̶*̶*̶ ̶F̶r̶e̶e̶ ̶9̶9 ̶p̶t̶s̶ ̶f̶o̶r̶ ̶t̶h̶i̶s̶ ̶q̶u̶e̶s̶t̶i̶o̶n

Physics
2 answers:
marusya05 [52]3 years ago
7 0
Earthquakes happen<span> when rock below the Earth's surface moves abruptly. </span>Usually, the rock is moving along large cracks in Earth's crust called faults. Most earthquakes happen<span> at or near the </span>boundaries<span> between Earth's </span>tectonic plates <span>because that's where there is </span>usually<span> a large concentration of faults</span>
malfutka [58]3 years ago
3 0
Because of the release of built up stress between the rocks constitute each plate.
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Tarzan swings on a 35.0 m long vine initially inclined at an angle of 44.0◦ with the vertical. The acceleration of gravity if 9.
maks197457 [2]

Answer:

(A) Vf = 13.8 m/s

(B)  Vf = 15.1 m/s      

Explanation:

length of rope (L) = 35 m

angle to the vertical = 44 degrees

acceleration due to gravity (g) = 9.8 m/s^{2}

(A) from conservation of energy

final kinetic energy + final potential energy = initial kinetic energy + initial potential energy

0.5m(Vf)^{2} + mg(Hf) =  0.5m(Vi)^{2} + mg(Hi)

where

m = mass

Hi = initial height = 35 cos 44 = 25.17

Hf = final height = length of vine = 35 m

Vi = initial velocity = 0 since he starts from rest

Vf = final velocity

the equation now becomes

0.5m(Vf)^{2} + mg(Hf) = mg(Hi)

0.5m(Vf)^{2} = mg (Hi - Hf)

0.5(Vf)^{2} = g (Hi - Hf)

0.5(Vf)^{2} = 9.8 x (25.17 - 35)

0.5(Vf)^{2} = - 96.3  (the negative sign tells us the direction of motion is downwards)

Vf = 13.8 m/s

(B) when the initial velocity is 6 m/s the equation remains

      0.5m(Vf)^{2} + mg(Hf) =  0.5m(Vi)^{2} + mg(Hi)

       m(0.5(Vf)^{2} + g(Hf)) =  m(0.5(Vi)^{2} + g(Hi))

      0.5(Vf)^{2} + g(Hf) = 0.5(Vi)^{2} + g(Hi)

      0.5(Vf)^{2} = 0.5(Vi)^{2} + g(Hi) - g(Hf)

       0.5(Vf)^{2} = 0.5(6)^{2} + (9.8 x (25.17 - 35))

        0.5(Vf)^{2} =  -114.3  ( just as above, the negative sign tells us the direction of motion is downwards)      

       Vf = 15.1 m/s

5 0
3 years ago
Read 2 more answers
I need science fair ideas for 4th grade, But i need something that won't need a oven, sunlight, ETC. Also, i need something that
Lina20 [59]
Something simple?
Hmm, how about a diagram of a fod chain? Its simple, if you dont have a printer to print the images of a food chain, or animals, then just try to draw it the best you can...
Make it into a poster, write some information about the animals, who eats who, are they a carnivor, herbivor, you know... Stuff like that :)
~.~.~.~.~.~.~.~.
<em>Hope this helped! :)</em>
5 0
2 years ago
Wind blows from what pressure to what pressure
viva [34]
This is called the coriolis effect. So in the northern hemisphere, winds blow clockwise around an area of high pressure and counter-clockwise around low pressure. Not only do differences in air pressure help determine wind speed and direction, they help forecast precipitation and clear weather.
5 0
3 years ago
Which part of the manufacturing process involves heating and rolling blocks of steel into flat sheets and bars?
faltersainse [42]

A. Forming

Explanation:

Metal forming is a metallurgical process which involves heating and rolling blocks of steel into flat sheets and bars.

Metal forming is the process of working metals and utilizing its properties to form different shapes.

  • Metal forming is made possible by metallic bonds in metals.
  • The bulk of the physical properties of metals can be attributed to these bond types.
  • In metal forming, metals are shaped into different substances.
  • Metal forming preserves the mass of the metallic body and the shapes modified by force.

Learn more:

Metals brainly.com/question/9053565

#learnwithBrainly

8 0
3 years ago
6.P.2.1 Matter: Properties and Changes Notes
Zinaida [17]

Answer:

The __law__ conservation

of state that either energy may produced nor destroyed

8 0
3 years ago
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