The period of the sound wave at the given frequency is determined as 0.00235 second.
<h3>
Period of the sound wave</h3>
The period of the sound wave at the given frequency is calculated as follows;
Period is reciprocal of frequency.
T = 1/f
T = 1/425
T = 0.00235 second
Thus, the period of the sound wave at the given frequency is determined as 0.00235 second.
Learn more about period here: brainly.com/question/10428039
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Alfred Wegener believed that all of the continents were originally attached! By looking at the map, you can see that Africa and South America look like they were once joined. This 'super continent' was known as Pangaea. He also found fossils that proved his point.
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4. KE increases by a factor of 16 is the answer
<u>Explanation:</u>
Kinetic energy = (1/2)mv² = 0.5 mv²
where
m = mass, and v = velocity.
So at 15 mph,
K
E = 0.5 m (15)
² = 112.5 m
And at 60 mph,
K
E = 0.5 m (60)² = 1800 m
m is the mass, and not meters.
So, 1800 m/112. 5 m = 16
16 times the Kinetic Energy.
Answer:
D) The rubber object will become negatively charged, and the glass object will become positively charged.
Explanation:
Electron affinity of rubber or glass will decide the thing that rubber will get the negative charge or the glass will get the negative charge
As we know that if the electron affinity of a given material is high then that material will not lose its electron while rubbing with some other material.
When we compare rubber and glass then we know that electron affinity of rubber is more as compare to glass.
So rubber will get negative charge when we rub it with glass
so correct answer will be
D) The rubber object will become negatively charged, and the glass object will become positively charged.
They both have produce oxides, use up oxygen, and release energy as well.<span />
