PHYSICS HIGH SCHOOL

A shorter electromagnetic wave is _____. more powerful less powerful hotter colder

Answers

Answer 1
Answer: Answer

more powerful 

Explanation
Electromagnetic waves are waves that do not require material medium for propagation. For example x-rays, UV and gamma rays.

From the wave equation, V= λf, when the wavelength is short the frequency is high. 
Frequency determines the intensity of the wave. When high the frequencies are high the waves has more penetrating power, hence more powerful. 
Answer 2
Answer:

Answer:

More powerful

Explanation:

I answered it and got it right.

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A surface wave on the ocean's surface is an example of a(n) _____ wave.A. gravityB. seismicC. mechanicalD. electromagnetic

Plz help it's physics really easy

Answers

Technically, there is not enough information to tell, because in your picture, you cut off the last word in the question.

If the last word in the question is "acceleration", then "C" is the correct choice.

If some other word is the last one in the question, then it has to be "D".

Answer:

D. there is not enough information to tell

Explanation:

I have already read this in grade five

A car of mass 1330 kg is traveling at 28 m/s.  The driver applies the brakes to bring the car to rest over a distance of 79 m. Calculate the force acting on the car.

Answers


you could use SUVAT to work out the deceleration and then use F=ma

S= 79m U=28m/s V=0m/s A=? T=n/a

V^2 = U^2 + 2AS  so 0 = 28^2 + 158A  so -158A = 784

A= 4.962 (3dp)

so F = ma = 4.962 *1330 = 6599.494N (3dp)

A 15 cm3 block of gold weighs 2.8 N. It is carefully submerged in a tank of mercury. One cm3 of mercury weighs 0.13 N. a. Will the mercury be displaced by the gold?
b. Will the gold sink or float in the mercury?

Answers

The density of gold is  2.8 N / 15 = 0.18 units
The density of mercury is 0.13/1 = 0.13 units

Since the density of gold is more than density of mercury, it will sink.
Since the gold will sink, it will displace mercury, but less than its own volume

If continents continue to drift, is it possible that a new supercontinent will form ? Which continents might be next to each other 200 million years from now.

Answers

Yes, it is already happening. About 270 million years ago the continents collided to form Pangea, and now, after the continents separated they continue to drift apart. Attached is a picture of what it may all look like when they recollide. Scientist are still not really sure. 

Difference between impulse and impulsive force

Answers

Impulse is caused by a force during a specific time that is equal to the body's change of momentum
Impulsive force: the process of minimizing an impact force can be approched
An impulsive force would be, say, a punch. Something that lasts a short time.An impulse can, I guess, be anything that lasts for a short time. Such as a sound impulse, say when a door slams shut.

)which technology keeps track of heart rate during a workout?O bathroom scale Ocalculator Opedometer
O wrist monitor

Answers

The technology is a Wrist monitor
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