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deff fn [24]
3 years ago
5

What describes how to compare the energy of two different waves

Physics
2 answers:
olganol [36]3 years ago
7 0
C. Measure their amplitudes
Mazyrski [523]3 years ago
3 0

Answer:

the answer is C

Explanation:

If you need an explanation let me know and I'll be sure to provide one

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Laney et al. (false memory):(a) Outline the rating scale used in the Food History Inventory [2 marks]
djverab [1.8K]

Answer: The rating scale that is used in food history inventory is from 1 to 8.

Explanation:

In this case the participants have to rate 24 items on a scale of 1 to 8.There are variety of questions related to food or fooding habits.

The questions like do you go out for food?

Do you like bread ? if yes how will you rate it on a scale of 1 to 8.

The questions like this has to be answered in a way . It is done in order to see the preferences and false memory  regarding the food preference that people have.

6 0
3 years ago
9/23/20
Neporo4naja [7]
234-12=23 is the answer of this question
4 0
4 years ago
A steel ball with mass m=5.21 g is moving horizontally with speed ????=412 m/s when it strikes a block of hardened steel with ma
docker41 [41]

Answer:

a) The speed of the block immediately after the collision is v_{2f}=(0.289\±0.002)m/s.

b) The impulse exerted on the block is p_{2}=(4.2772\±0.0296)kg*m/s.

Explanation:

Hi

a) As this is a perfectly elastic collision, we can use the formula  v_{2f}=(\frac{2m_{1} }{m_{1}+m_{2}} ) v_{1i}+ (\frac{m_{2}-m_{1}}{m_{1}+m_{2}} )v_{2i}, due v_{2i}=0m/s, we obtain v_{2f}=(\frac{2m_{1} }{m_{1}+m_{2}} ) v_{1i}. Then with the data that we know m_{1}=5.21g=0.00521kg, m_{2}=14.8kg and v_{1i}=412m/s, therefore v_{2f}=(\frac{2(0.00521kg) }{0.00521kg+14.8kg} ) 412m/s=0.289m/s or v_{2f}=(0.289\±0.002)m/s adding uncertainty.

b) Now that we know the speed we can use p_{2}=m_{2}*v_{f2} =14.8kg*(0.289\±0.002)m/s=(4.2772\±0.0296)kg*m/s.

8 0
4 years ago
How does chemical energy cause a change? What about electromagnetic energy?
Ksju [112]

Answer:

how does chemical energy cause a change?:

Chemical reactions often involve changes in energy due to the breaking and formation of bonds. Reactions in which energy is released are exothermic reactions, while those that take in heat energy are endothermic.

What about electromagnetic energy?:

Electromagnetic radiation is made when an atom absorbs energy. The absorbed energy causes one or more electrons to change their locale within the atom. Depending on the kind of atom and the amount of energy, this electromagnetic radiation can take the form of heat, light, ultraviolet, or other electromagnetic waves.

7 0
3 years ago
If the current flowing through an electric heater increases from 6 to 12 amp while the voltage remains the same, the heat produc
Ainat [17]
Q=l^2 times R times t
Where Q - heat, I -current, R - resistance and t is time

If you increase I twice (and it's squared), than Q gonna went up 4 times (2 squared).

Choose last
8 0
4 years ago
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