Answer:
594.8 Hz
Explanation:
Parameters given:
Speed of sound, v = 345 m/s
Wavelength = 58 cm = 0.58 m
Speed of a wave is given as:
Speed = wavelength * frequency
Therefore:
Frequency = Speed/Wavelength
Frequency = 345/0.58
Frequency = 594.8 Hz
If the mass of an object doubles, the weight of the object also doubles
If the mass of an object halves, the weight of the object also halves
Explanation:
The mass of an object is an intrinsec property of the object that gives a measure of the "amount of matter" in the object. Mass is indipendent from the location of the object.
On the contrary, weight gives a measure of the force of gravitational attraction felt by the object in a gravitational field. Weight is dependent on the location.
The mass and the weight of an object are related by the following equation:

where:
W is the weight of the object
m is its mass
g is the acceleration of gravity
We see from the formula that the weight of an object is directly proportional to its mass. This means the following:
- If the mass of an object doubles, the weight of the object also doubles
- If the mass of an object halves, the weight of the object also halves
Learn more about forces and weight:
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Answer:
In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them.
Explanation:
Answer: kooi kooi
how r u and thanks for the free points :)