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Art [367]
3 years ago
12

Which of the following universal forces is the most effective over long distances?

Physics
2 answers:
Vera_Pavlovna [14]3 years ago
6 0
B. gravitational is it
Natasha2012 [34]3 years ago
5 0
Electrical forces travel far through the universe
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What factors does the speed of atoms depend on?
Vedmedyk [2.9K]
<h2>Answer:</h2>

The speed of atoms depends upon:

  • Temperature: Speed of atom is directly proportional to the temperature of atoms.
  • Pressure : It is also directly proportional to the speed of an atom.
  • Volume of gas : As the volume of gas increases, collision between atoms increases with increasing the speed of atom
  • Number of atoms surrounding: More number of atoms leads to more collisions, increasing speed of atoms.


4 0
3 years ago
What is the marble's range if it is fired horizontally from 1.6 m above the ground?
cupoosta [38]

Answer:

The answer is 6.40 meters.

Explanation:

The speed v = √(2gh)

v = √( 2×9.8×6.4) = 11.2 m/s

After, finding the time it takes to hit the ground from a height of 1.6 meters.

time = √(2H÷g)

time = √(2×1.6÷9.8)

time = 0.5714 seconds.

Horizontal distance is speed × time = 11.2 × 0.5714 = 6.40 meters.

5 0
3 years ago
How do you make the chemical equations LiOH+H2(SO4) and H2O+Li2(SO4) balanced?
Likurg_2 [28]

Answer:

here

Explanation:

6 0
3 years ago
Two coils close to each other have a mutual inductance of 32 mH. If the current in one coil decays according to I=I0e−αt, where
fiasKO [112]

The emf induced in the second coil is given by:

V = -M(di/dt)

V = emf, M = mutual indutance, di/dt = change of current in the first coil over time

The current in the first coil is given by:

i = i₀e^{-at}

i₀ = 5.0A, a = 2.0×10³s⁻¹

i = 5.0e^(-2.0×10³t)

Calculate di/dt by differentiating i with respect to t.

di/dt = -1.0×10⁴e^(-2.0×10³t)

Calculate a general formula for V. Givens:

M = 32×10⁻³H, di/dt = -1.0×10⁴e^(-2.0×10³t)

Plug in and solve for V:

V = -32×10⁻³(-1.0×10⁴e^(-2.0×10³t))

V = 320e^(-2.0×10³t)

We want to find the induced emf right after the current starts to decay. Plug in t = 0s:

V = 320e^(-2.0×10³(0))

V = 320e^0

V = 320 volts

We want to find the induced emf at t = 1.0×10⁻³s:

V = 320e^(-2.0×10³(1.0×10⁻³))

V = 43 volts

3 0
3 years ago
A worker does 25 J of work lifting a bucket, then sets the bucket back down in the same place. What is the total net work done o
Vera_Pavlovna [14]

Answer:

0 J

Explanation:

As work is force times displacement, if no displacement occurs, no work occurs.

5 0
2 years ago
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