PHYSICS HIGH SCHOOL

What is the wavelength of a light with a frequency of 6.98x10to the 14th power

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Answer 1
Answer: it is callled do it your self  you you you

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What formula can be used to calculate [H30+]?

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[H3O+] is just the same with [H+]. There are quite a few relationships between [H+] and [OH−] ions. And because there is a large range of number between 10 to 10-15 M, the pH is used. pH = -log[H+] and pOH = -log[OH−]. In aqueous solutions, [H+ ][OH- ] = 10-14. 

Please help me solve

Answers

Answer:

I think D

Explanation:

The Lamborghini Diablo sports car can accelerate from 0.0 km/hr to 99.2 km/hr in 4.0 seconds. What is the acceleration of this car? Give your answer in units of kilometers per hour/sec.

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The Lamborghini Diablo sports car can accelerate from 0.0 km/hr to 99.2 km/hr in 4.0 seconds. What is the acceleration of this car? Give your answer in units of kilometers per hour/sec. To find the acceleration of the car we have to
1.   First determine the suitable formula for this word problem. Which is a.   A=vf-vi/t

Given are: Vf=99.2 km/h Vi= 0.0 km/h T= 4.0sec

Solution:
A= 99.2 km/h – 0.0km/h / 4.0 sec
A = 99.2 km/h / 4 sec
A = 2.8 km/h/sec



Answer:

24.8 km per second

Explanation:

When the temperature is cold, Tim's tires look under-inflated. This is because the air molecules in the tire ________ causing their kinetic energy to _________ and volume to _______..A). slow down, decrease, contract
B). multiply, increase, fluctuates.
C). stay the same, increase, expand. Eliminate.
D). speed up, decrease, stay the same.

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The correct answer should be D). speed up, decrease, stay the same.

During cold times, air molecules speed up while the energy decreases. Since the volume stays the same, it appears as if the tires look under-inflated, while in reality they're not.

When the temperature is cold, Tim's tires look under-inflated. This is because the air molecules in the tire slow down causing their kinetic energy to decrease and volume to contract. slow down, decrease, contract on USA Test Prep its A.

Eric is walking forwards at 0.5 m/s and then hears a blackbear charging from behind. He continues to move forward
and increases his speed to 10 m/s within 3 seconds. What was
Eric's acceleration?
0 3.2 m/s
O 3.2 m/s^2
0 -3.2 m/s^2
O 10 m/s^2
O Other:​

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Answer:

3.2 m/s^2

Explanation:

current velocity minus intitial velocity, divided by time: a=(v2-v1)/t

Oceanic electric fields produce electric currents. True False

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Wow ! That's wild ! 
I never heard of an "oceanic" electric field before.

Electric currents are the flow of great numbers of electrons
inside a conducting material.  What makes them move is
an electrostatic or magnetic field inside the conductor.

Things that happen in the ocean produce ocean currents,
not electric ones.
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