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Ne4ueva [31]
3 years ago
6

A high pitch always corresponds to

Physics
1 answer:
deff fn [24]3 years ago
6 0
A high pitch always corresponds to a high frequency wave
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What effort force will be required to lift the 20 N object using the pulley above?
Umnica [9.8K]

Answer:

I think it is 5N.

Explanation:

4 0
3 years ago
a bicycle uniformly from rest at time t the velocity of the bicycle is v at what time will the bicycle have a velocity of 4v​
sesenic [268]

Here

  • Acceleration and initial velocities are constant.

According to first equation of kinematics.

\\ \sf\longmapsto v=u+at

\\ \sf\longmapsto v=0+at

\\ \sf\longmapsto v=at

\\ \sf\longmapsto v\propto t

  • Time was t at velocity v
  • Time will be 4t at velocity 4v
7 0
2 years ago
The density of 2 kilograms of iron on Earth's surface is
Eduardwww [97]

Answer:

B. The same on the moon.

Explanation:

The density of an object is the ratio of the mass contained by the object to the volume occupied by that mass.

Density = \frac{Mass}{Volume}

When the object is taken from the earth to anywhere in the universe, its mass remains constant. The dimensions of the object and hence its volume also remains constant anywhere in the universe.

Therefore, the density of the object will also remain the same as it depends upon the mass and the volume of the object.

So, the correct option is:

<u>B. The same on the moon.</u>

5 0
3 years ago
What is the best example of a compound machine A ax. B ramp. C car D screw
liberstina [14]

Answer: I believe the answer is C

Explanation:

Cars are composed of hundreds of simple machines

3 0
2 years ago
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Atoms are known to form charges due to their ability to gain and lose electrons in reactions. As a result, atoms
galben [10]

Answer:

C. Fe: 24 electrons

Explanation:

From the analogy given, the atom with a charge of +2 is Fe having 24 electrons.

To calculate the charges on an atom;

     Number of charges = Number of protons - Number of electrons.

   O: 10 electrons: 8 protons = 8 - 10 = -2

   N: 10 electrons; 7 protons = 7 - 10 = -3

   Cl: 18 electrons; 17 protons = 17 - 18 = -1

So;

    Fe: 24 electrons and 26 protons = 26 -24  = +2

Therefore, the solution is Fe

7 0
3 years ago
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