Your shopping cart has a mass of 65 kilograms. In order to accelerate the shopping cart down an aisle at 0.30 m/s2 What force would you need to use or apply to the cart. I don't know how to solve this

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Answer 1
Answer: Justin ! Justin ! ! You're in high school Physics. You've done Newton's Laws until you saw them in your sleep. When the wind rustles through the trees, you almost hear it whispering to you "F = M A". Now is the time to use that ! M=65kg. A=0.3m/s^2. F = (65)(0.3)=19.5 newtons.

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Which of the following statements is a consequence of the equation, E = mc2A
energy is released when matter is destroyed
B
mass and energy are equivalent
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This is D.
A - technically the matter is converted but yes E is released
B - Mass and energy are different forms of each other
C - They can now combine to form the conservation of mass AND energy

True or False Another name for constructive interference is intense interference

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The answer to this statement is FALSE

What happens as a result of an increase in the intensity of a sound wave? -the frequency of a soundwave increases. -the velocity of the sound wave decreases. -the energy of the soundwave increases. -the amplitude of the soundwave decreases

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As a result of an increase in the intensity of a sound wave, the energy of the sound wave increases!

Answer: c. The energy of the sound wave increases.

Explanation:

What is the minimum coating thickness (but not zero) that will minimize the reflection at the wavelength of 705 nm where solar cells are most efficient?

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Answer:

d = 235 nm.

Explanation:

Let the layer be of glass. Refractive index of glass μ = 1.5. Let the required  thickness be d.

For minimum reflection , that is destructive interference in thin films , the condition is

2μd = λ ( for first order)

d = 705 / 2 x 1.5 = 235 nm [ λ =705 nm ]

2 examples of all 7 wave behaviors

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Answer:

radio waves

microwaves

All waves behave in certain characteristic ways. They can undergo refraction, reflection, interference and diffraction.

An ultrasound wave vibrates 30,000 times per second. what is the frequency

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The frequency is 30,000 per second.
That's the same thing as 30 KHz.