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Dmitry [639]
2 years ago
12

When dropped from the same height, will a minivan or tricycle hit the ground first? Why?

Physics
1 answer:
Serga [27]2 years ago
5 0

Minivan hits the ground first than tricycle due to heavier mass and lesser air resistance.

Explanation:

According to Galileo's motion of objects, when two objects having different masses and areas dropped from same height does not hit the ground at the same time.

it's because the air offers much greater resistance to the falling motion of the lighter object than it does to the heavier one. The air is actually an upward force of friction, acting against gravity and slowing down the rate at which the tricycle falls.

Due to this when a minivan or tricycle when dropped from same height hits the ground at different times. As friction of air offers greater resistance to tricycle. Since minivan is heavier there will be lesser impact of air on it. So, minivan hits the ground first than tricycle.

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How might a suit of armor be a good analogy for a function of the skeletal system?

It's a frame for your body and protects organs and armor protects your body from injury

4 0
2 years ago
Calculate the average drift speed of electrons traveling through a copper wire with a crosssectional area of 80 mm2 when carryin
Vedmedyk [2.9K]

Answer:

The correct answer is 2.8*10^{-5}ms^{-1}

Explanation:

The formula for the electron drift speed is given as follows,

u=I/nAq

where n is the number of of electrons per unit m³, q is the charge on an electron and A is the cross-sectional area of the copper wire and I is the current. We see that we already have A , q and I. The only thing left to calculate is the electron density n that is the number of electrons per unit volume.

Using the information provided in the question we can see that the number of moles of copper atoms in a cm³ of volume of the conductor is 8.93/63.5 molcm^{-3}. Converting this number to m³ using very elementary unit conversion we get 140384molm^{-3}. If we multiply this number by the Avagardo number which is the number of atoms per mol of any gas , we get the number of atoms per m³ which in this case is equal to the number of electron per m³ because one electron per atom of copper contribute to the current. So we get,

n=140384*6.02*10^{23} = 8.45*10^{28}electrons.m^{-3}

if we convert the area from mm³ to m³ we get A=80*10^{-6}m^{2}.So now that we have n, we plug in all the values of A ,I ,q and n into the main equation to obtain,

u=30/(8.45*10^{28}*80*10^{-6}*1.602*10^{-19})\\u=2.8*10^{-5}m.s^{-1}

which is our final answer.

6 0
3 years ago
What is the equivalent resistance of a circuit that contains two 50.00
Whitepunk [10]

Answer:

A

Explanation:

Resistors in series add. There is only one path the current can take. That's why Christmas Tree lights sometimes give a lot of trouble. If a bulb burns out, it could be any one of them and time is needed to find the burned out bulb.

That being the case R = R1 + R2

R1 = 50 ohms

R2 = 50 ohms

R = 50 + 50

R = 100 ohms

Answer A

4 0
3 years ago
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What would be new resistance if length of conductor is doubled and thickness is halved <br>​
nignag [31]

Answer:

The new resistance comes out to be = 4 times of original resistance .

6 0
3 years ago
Which is a benefit of using synthetic polymers, such as nylon?
alisha [4.7K]

Answer:

Synthetic polymers are lightweight

Explanation: took the test

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