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krek1111 [17]
3 years ago
11

Has an atomic number of 1

Physics
2 answers:
ololo11 [35]3 years ago
7 0

Answer:

1 = H = Hydrogen

tankabanditka [31]3 years ago
6 0

Answer:

The element H (Hydrogen) has an atomic number of 1.

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Based on Kepler's work, which best describes the orbit If a planet around the Sun?
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Answer:

an ellipse with the Sun at one focus  or D

Explanation:

Answer for edgenuity

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What happens to the resistance of a wire as it gets wider
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it snaps

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A person hits a tennis ball with a mass of 0.058 kg against a wall.
horrorfan [7]

Explanation:

Mass of the ball, m = 0.058 kg

Initial speed of the ball, u = 11 m/s

Final speed of the ball, v = -11 m/s (negative as it rebounds)

Time, t = 2.1 s

(a) Let F is the average force exerted on the wall. It is given by :

F=\dfrac{m(v-u)}{t}

F=\dfrac{0.058\times (11-(-11))}{2.1}

F = 0.607 N

(b) Area of wall, A=3\ m^2

Let P is the average pressure on that area. It is given by :

P=\dfrac{F}{A}

P=\dfrac{0.607\ N}{3\ m^2}

P = 0.202 Pa

Hence, this is the required solution.

8 0
3 years ago
Before you leave for a trip, you should check
Evgen [1.6K]
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-- make sure you arranged for someone to feed the dog and the goldfish;

-- make sure you turned off the faucets and the stove burners.
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Find the magnitude of the torque produced by a 4.8 N force applied to a door at a perpendicular distance of 0.43 m from the hing
SVEN [57.7K]

Answer:

2.064 N.m

Explanation:

Torque: This is the force that act on a system, which tends to cause rotation or twisting. The S.I unit of Torque is N.m

Torque is represented mathematically as,

T = F×d........................ Equation 1

Where T = Torque, F = Force, d = perpendicular distance.

Given: F = 4.8 N,  d = 0.43 m.

Substitute into equation 1

T = 4.8×0.43

T = 2.064 N.m

Hence the Torque produced = 2.064 N.m

6 0
3 years ago
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