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Olin [163]
3 years ago
8

A water rocket can reach a speed of 75 m/s in 0.050 seconds from launch. What is its average acceleration?

Physics
2 answers:
yanalaym [24]3 years ago
6 0
A=v/t
So therefore 75/0.050= acceleration
So the answer is a= 1500 metres per second per second
Andru [333]3 years ago
6 0

Answer:

a = 1500 m/s^2

Explanation:

Initial speed of the rocket is ZERO as it starts from rest

v_i = 0

final speed of the rocket is 75 m/s

v_f = 75 m/s

so we will say that average acceleration is defined as rate of change in velocity

so it is given as

a = \frac{v_f - v_i}{\Delta t}

a = \frac{75 - 0}{0.05}

a = 1500 m/s^2

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distance = 180m

time = 6 secs

velocity = 45m/s

s= ut+ 1/2at²

2s=2ut+at²

2s-2ut= at²

2(180)-2(25)(6) =a(6)²

60=36a

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6 0
3 years ago
A negative charge of -0.00067 C and a positive charge of 0.00096 C are separated by 0.7 m. What is the force between the two cha
koban [17]

Answer:

<em> -11,813.87N </em>

Explanation:

According to coulombs law, the Force between the two charges is expressed as;

F = kq1q2/d²

k is the coulombs constant = 9*10⁹kg⋅m³⋅s⁻²⋅C⁻².

q1 = -0.00067 C

q2 = 0.00096 C

d  = 0.7m

Substitute into the formula:

F =  9*10^9 *  -0.00067 * 0.00096/0.7²

F = 9*10⁹*-6.7*10⁻⁴*9.6*10⁻⁴/0.49

F = -578.88*10⁹⁻⁸/0.49

F = -578.88*10/0.49

F = -5788.8/0.49

F = -11,813.87N

<em>Hence the force between the two charges is -11,813.87N </em>

6 0
3 years ago
Hee Sun drew an electron dot diagram of a silicon atom as shown. In addition to changing the symbol to C, how would this diagram
dolphi86 [110]
Other than for the chemical symbol, the electron dot diagram for silicon would be the same as it was for carbon.

The reason for this is because electron dot diagrams are used to represent the electrons in the outermost, or valence, shell of an atom. In a group of the periodic table, all of the elements have the same number of valence shell electrons. This means that all elements belonging to the same group have the same electron dot diagram, except for the symbol of the element that is within the diagram.
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3 years ago
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Answer: I Believe The Answer Is A. Insulating The Body

5 0
3 years ago
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Lina20 [59]

Answer: The correct answer is option (C).

Explanation:

As it is given in the problem, the path of a meteor passing Earth is affected by its gravitational force and falls to Earth's surface. Another meteor of the same mass falls to Jupiter's surface due to its gravitational force.

According to Newton's law of universal gravitational, every particle attracts every other particles in the universe with the gravitational force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

The Jupiter is the most massive planet in the solar system. It is also the largest planet in the solar system. The gravity of Jupiter on its surface is 2.4 times that of surface gravity of the Earth.

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4 years ago
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