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NikAS [45]
3 years ago
13

An electromagnetic wave has a frequency of 4.0 x 10^18 Hz. What is the wavelength of the wave?

Physics
2 answers:
LenaWriter [7]3 years ago
3 0

Answer:

7.5 × 10^-11 m

Explanation:

Hope this helps !

andreev551 [17]3 years ago
3 0
Hello! Here is a photo of what’s happening below, in case the set up of the problem is unclear to do:

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If a builder of mass 75kg climbs a vertical ladder of 25m how much energy has she gained ?
erica [24]
So,

GPE (graviational potential energy) = mass x g x height

GPE is depends on where zero height is defined.  In this situation, we define h = 0 as the initial height.

GPE = 75 \ kg*9.8 \ \frac{m}{s^2}*25 \ m

GPE = 18,375 \frac{kg*m^2}{s^2}

GPE = 18,375 \ joules(J) \ or \ 18.375 \ kilojoules(kJ)

The builder has gained 18.375 kJ of PE.
4 0
2 years ago
Heat energy moves:_______.
steposvetlana [31]

c) only from warmer areas to colder areas.

The second principle of thermodynamics states that heat can only flow from a hotter body to a cooler one. Specifically, Clausius statement says that is not possible for heat to move by itself from a lower temperature body to a higher temperature body.

3 0
3 years ago
If Sherry took her pulse for 6 seconds and felt 14 beats, What would her heart rate be?
Tom [10]

Answer:

140 beats per minute

Explanation:

You have to multiply the ratio 14 beats/6 seconds by 10 because 6 seconds times 10 to get 1 minute. The answer you get is 140 beats/60 seconds.

3 0
2 years ago
It is vital to keep in mind that breaches are entirely concerned with data. No matter what physical damage a device incurs, data
Ierofanga [76]

Answer:

TRUE

Explanation:

We currently live in the digital age, where almost everything is digitized, including strategic information. Thus, each individual and especially corporations that have sensitive data must use protection mechanisms against cyber attacks. One of the measures most recommended by experts is encryption, which consists of a set of rules that aims to encode data information so that only the sender and the receiver can decipher it.

5 0
3 years ago
The word centripetal means"<br> _______ seeking."<br> Answer here
koban [17]

Answer:

moving or tending to move toward a center.

Explanation:

the force that is necessary to keep an object moving in a curved path and that is directed inward toward the center of rotation a string on the end of which a stone is whirled about exerts centripetal force on the stone — compare centrifugal force.

6 0
3 years ago
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