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nadya68 [22]
4 years ago
8

An arrow is fired vertically upwards by a bow and reaches an altitude of 134 m. Find the initial speed of the arrow on the groun

d level.
Physics
1 answer:
Verdich [7]4 years ago
5 0

Answer:

Explanation:

Let the initial speed be u . final speed = 0

v² = u² - 2gh

v is final speed , u is initial speed , h is height .

0 = u² - 2g x 134

u² = 2 x 9.8 x 134

u = 51.25 m /s .

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Answer:

721 kg/m^3

Explanation:

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You hear a fire truck with a certain intensity, and you are about 1 mile away. Another person hears the same fire truck with an
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So if two people are watching or listening to the same source, and one intensity is 1/10 as intense as the other intensity, then the farther person must be  √10  times as far from the source as the nearer person is.

√10 = 3.1622 ...

So the second guy is about <em>3.16 miles</em> from the fire truck.  

4 0
3 years ago
One clue we can observe that means a chemical reaction has occurred is the formation of light. What is one chemical reaction you
dimaraw [331]

Answer:

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8 0
3 years ago
Calculate the power produced by a 12 V battery charger if it delivers:A. 10 A in the fast charge modeB. 2 A in trickle charge mo
Novay_Z [31]

The electric power (P) produced by an electric current (I) passing through a voltage (V) is given by the equation:

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A) I = 10A

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B) Replace V=12V and I=2A to find the power produced in the trickle charge mode:

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3 0
1 year ago
If the force of gravity increases, which mearsurement will change and how?
Fiesta28 [93]

Answer:

If the force of gravity increases or gravitational force increases the weight of the Object D. Increases.

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Fg = force of gravity

W = weight

m = mass of object

g = acceleration due to gravity.

g

3 0
3 years ago
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