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katen-ka-za [31]
3 years ago
14

Which transformation of energy takes place when a slingshot launches a stone? (PE stands for potential energy.) A. elastic PE to

gravitational PE B. elastic PE to kinetic energy C. gravitational PE to elastic PE D. kinetic energy to gravitational PE
Physics
2 answers:
Svet_ta [14]3 years ago
7 0

Answer:

B. elastic PE to kinetic energy

Explanation:

As we know that when we stretch the slingshot to some distance then the elastic energy is stored into the sling which is given as

U = \frac{1}{2}kx^2

here we know that

k = elastic constant of the sling

x = stretch in the sling

now when we release the sling from that position then the shot will move with certain kinetic energy from it and sling comes to its natural length

so here we can say that elastic potential energy of the sling will convert into kinetic energy of the shot here so correct answer will be

B. elastic PE to kinetic energy

boyakko [2]3 years ago
6 0

B. Elastic potential to kinetic energy

The elastic potential energy in the slingshot will be transferred to the stone as kinetic energy as the stone is launched.

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Answer:

0.00091

Explanation:

(9x10^9) (2.6x10^-6) (1.4x10^-6) / 36

(9,000,000,000) (0.0000026) (0.0000014) /36

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23,400(0.0000014) /36

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0.00091

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What element is produced when the isotope bismuth-213 emits a beta particle
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a

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How much work does the electric field do in moving a proton from a point with a potential of +125 v to a point where it is -55 v
777dan777 [17]
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W= qV_i - qV_f
where q is the charge of the proton, q=1 e = 1.6\cdot 10^{-19}C, with e being the elementary charge, and V_i = +125 V and V_f = -55 V are the initial and final voltage.

Substituting, we get (in electronvolts):
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5 0
3 years ago
needhelpp101 Why is the gravitational potential energy of an object 1 meter above the moon’s surface less than its potential ene
Vlad1618 [11]

If you remember the formula for potential energy,
then this question is a piece-o-cake.

  <em>Potential energy = (mass) x (<u>acceleration of gravity</u>) x (height) .</em>

-- The object's mass is the same everywhere.
-- You said that the height is the same both times.
-- How about the acceleration of gravity ? 

Compared to gravity on Earth, it's only  16.5 percent as much on the Moon. 
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4 0
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Brrunno [24]

Answer:

Explanation:

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force x time = change in momentum

initial speed u = 24 km/h = 6.67 m /s

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change in momentum = m v - mu

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= 15363 kg m/s

F x 18 = 15363

F = 853.5 N .

4 0
3 years ago
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