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sladkih [1.3K]
3 years ago
12

Atoms in a molecule held together through sharing ______. (points 3)

Physics
2 answers:
Wittaler [7]3 years ago
8 0
Covalent and ionic bonds
Bas_tet [7]3 years ago
6 0
<span>Atoms in a molecule held together through sharing 

Electrons </span>
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Railroad cars are loosely coupled so that there is a noticeable time delay from the time the first and last car is moved from re
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Without this slack, a locomotive might simply sit still and spin its wheels. The loose coupling enables a longer time for the entire train to gain momentum, requiring less force of the locomotive wheels against the track. In this way, the overall required impulse is broken into a series of smaller impulses. (This loose coupling can be very important for braking as well).

Explanation:

8 0
3 years ago
When does acceleration due to gravity equal 9.8 m/s downward?
Elza [17]

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b

Explanation:

i took the quiz i think its right

7 0
3 years ago
A 2,500 kg car moves at 15 m/s^2; 15m/s^2 is the (blank) of the car.
Neporo4naja [7]
A. Acceleration.
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7 0
3 years ago
(a) At what height above Earth’s surface is the energy required to lift a satellite to that height equal to the kinetic energy r
Nikitich [7]

Answer:

Explanation:

Gravitational Potential Energy at earth surface U_1=\frac{GM_em}{R_e}

Gravitational Potential Energy at height h is U_2=\frac{GM_em}{R_e+h}

Energy required to lift the satellite E_1=U_1-U_2

E_1=\frac{GM_em}{R_e}-\frac{GM_em}{R_e+h}

Now Energy required to orbit around the earth

E_2=\frac{1}{2}mv_{orbit}^2=\frac{GM_2m}{2(R_e+h)}

\Delta E=E_1-E_2

\Delta E=\frac{GM_em}{R_e}-\frac{GM_em}{R_e+h}-\frac{GM_2m}{2(R_e+h)}

E_1=E_2  (given)

\frac{GM_em}{R_e}-\frac{GM_em}{R_e+h}-\frac{GM_2m}{2(R_e+h)}=0

\frac{1}{R_e}-\frac{3}{2(R_e+h)}=0

h=\frac{R_e}{2}

h=3.19\times 10^6\ m

(b)For greater height E_1  is greater than E_2

thus energy to lift the satellite is more than orbiting around earth

4 0
3 years ago
A ball with a mass of 5 kg is accelerating at 5 m/s/s. What is the force acting on the ball?
Genrish500 [490]
Force is 25 N
F=ma
F=5x5
F=25 N
6 0
3 years ago
Read 2 more answers
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