What is the pendulum length whose period is 2.0s ?

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Answer 1
Answer: Formula\ for\ period:\n\ T=2 \pi \sqrt{(L)/(g)}\n\ g-gravity=9,8 (m)/(s^2) ,\ L-pendulum \ length \n\n (T)/(2 \pi ) = \sqrt{ (L)/(g) }|square\n\n (T^2)/(2 \pi ) = (L)/(g) \n\n\ (T^2)/(2 \pi )*g=L\n\n L= (2^2)/(2*3,14 )*9,8= (39,2)/(6,28) =6,24mT=2 \pi \sqrt{(L)/(g)} \n (T)/(2 \pi ) = \sqrt{ (L)/(g) }|square\n (T^2)/(2 \pi ) = (L)/(g) \n (T^2)/(2 \pi )*g=L\n L= (2^2)/(2*3,14 )*9,8= (39,2)/(6,28) =6,24m

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A stone is dropped from a tower 100 meters above the ground. The stone falls past ground level and into a well. It hits the water at the bottom of the well 5.00 seconds after being dropped from the tower. Calculate the depth of the well. Given: g = -9.81 meters/second2.

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The distance that an object falls from rest in ' T ' seconds is

           Distance  =  (1/2) (gravity) ( T² )

In this question,

           Distance  =  (1/2) (9.81 m/s²) (5.00 s)²

                         =      (4.905 m/s²) (25.0 s²)

                         =      (4.905 x 25)  m

                         =           122.63 meters .

The first 100 meters of fall was from the tower to ground level,   
so the distance into the well must be the remaining  22.63 meters.

Answer:

22.5 meters

Explanation:

If all of the forces acting on an object balance so that the net force is zero, then(A) the object must be at rest
(B) the object’s speed will decrease
(C) the object will follow a parabolic trajectory
(D) the object’s direction of motion can change, but its speed cannot
(E) None of the above

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The gases cast off by a dying star are called

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Answer:

Planetary Nebula

Explanation:

A star has its own life cycle very similar to a human life cycle where it takes birth, grows up, becomes old and then dies. The life cycle of stars and human differ in the duration of cycle and end result.

When a star dies it can end up differently basis its mass. Here one of the ends of a star is mentioned where it casts off all the gases. Such type of situation will create a planetary nebula. One famous example of such nebula is Crab Nebula.

Planetary Nebulae hope that helps

An automatic response to a stimulus is called a reflex.

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If you are asking if it is true or false, the correct answer is true. Reflex is an automatic response to a stimulus. Reflex is a stimulus that will allow an individual to respond to an event in which an organism will need to do in order for survival.

If your speed slows down you will have what acceleration?

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if you slow down you have deceleration 
when speed slows down you have kinetic energy.

Which of these is most likely to lead directly to a black market?a. a supply shock
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b. a price floor
d. equilibrium

Answers

The answer is C.rationing.

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Answer:

c. rationing

Explanation:

allow each person to have only a fixed amount of (a particular commodity).