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Zinaida [17]
3 years ago
14

Physics students were asked about the horizontal velocity at Point Q in the football's trajectory. Ignoring air resistance, whic

h is the
best description of the horizontal velocity of the football at Point Q?

Physics
1 answer:
artcher [175]3 years ago
8 0
D the horizontal velocity is constant throughout the motion
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According to the Heisenberg Uncertainty Principle, it is impossible to know precisely both the position and the ________ of an e
alisha [4.7K]

Answer:

Momentum

Explanation:

Heisenberg uncertainty principle says it is <em>uncertain to find the momentum and position of a particle at the same time. there must be some uncertainty.</em>

\Delta X.\Delta P\geq \hbar.

It means decreasing the position value will increase the momentum value while decreasing the momentum value will increase the position value.

I hope it works for you

Thank you.

8 0
3 years ago
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Complete the statement.
erica [24]

Answer:

The speed of sound also depends on the temperature of the medium. The hotter the medium is, the faster its particles move and therefore the quicker the sound will travel through the medium. When we heat a substance, the particles in that substance have more kinetic energy and vibrate or move faster.

Explanation:i dont have one lol

5 0
3 years ago
Another machine uses an input of 200 newtons to produce an output force of 80 newtons what is the mechanical advantage of this m
Rina8888 [55]

If the input machine produces an output of 80 Newtons, then the mechanical advantage is that it produces work. If the required output must be 80 Newtons, then the input force is desirable having 100 percent production of force even though it requires a large amount of input to produce 80 Newtons of force.

3 0
4 years ago
The blood pressure at your heart is approximately 100 mm Hg. As blood is pumped from the left ventricle of your heart, it flows
RoseWind [281]

Answer:

The correct option is c. 75 for this question

Explanation:

The correct option is c. 75 for this question:

Let's see how.

Continuity Equation is given as:

AcVc = AaVa

Where,

Aa = Area of Aorta

Ac = Area of the capillary

Va = Fluid speed in Aorta

Vc = Fluid speed in Capillary

So,

Assuming the fluid is the ideal one/

\pi/4 Dc^{2} Vc= \pi/4 Da^{2} Va

Dc^{2} Vc= Da^{2} Va

Dc = Da x \sqrt{\frac{Va}{Vc} }

Dc = 2.5 cm x \sqrt{\frac{60 cm}{0.07 cm } }

Dc = 73.192 cm

Dc = 75 approximately

Hence, the diameter of the capillary = 75 cm approximately  

3 0
3 years ago
Help me , what is the properties of fluids ? ​
rodikova [14]
Some of the most fundamental concepts of fluid properties are temperature, density, and composition.
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3 years ago
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