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Sveta_85 [38]
2 years ago
5

The air in tires can support a car because gases __________.

Physics
1 answer:
____ [38]2 years ago
8 0
Because the air inside the tires is kept at high pressure.

In fact, the force applied by the tires upwards to counter-balance the weight of the car (pushing downwards) is 
F=pA
where p is the pressure of the air inside the tires and A is the area of contact between the tire and the car. Therefore, a higher pressure means a larger force F, and eventually if the pressure p is higher enough the force F will be large enough to counterbalance the weight of the car.
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Which method should be used to determine which type of natural event produces the greatest number of sand dunes?
jeka94

Answer:

Stabilizing dunes involves multiple actions. Planting vegetation reduces the impact of wind and water. Wooden sand fences can help retain sand and other material needed for a healthy sand dune ecosystem. Footpaths protect dunes from damage from foot traffic.

Explanation:

5 0
2 years ago
A classical estimate of the vibrational frequency is ff = 7.0×10137.0×1013 HzHz. The mass of a hydrogen atom differs little from
vlada-n [284]

Answer:

The force constant of the spring is 317.8 N/m.

Explanation:

Given that,

Frequency f=7.0\times10^{13}\ Hz

We need to calculate the reduced mass

Using formula of reduced mass

\mu=\dfrac{m_{H}m_{I}}{m_{H}+m_{I}}

Where, m_{H}= atomic mass of H

m_{I}= atomic mass of I

Put the value into the formula

\mu=\dfrac{1\times126.9}{1+126.9}

\mu=0.99\ u

\mu=0.99\times1.66\times10^{-27}\ Kg

\mu=1.643\times10^{-27}\ kg

We need to calculate the force constant of the spring

Using formula of frequency

f=\dfrac{1}{2\pi}\times\sqrt{\dfrac{k}{\mu}}

k=f^2\times 4\pi^2\times\mu

Put the value into the formula

k=(7.0\times10^{13})^2\times4\pi^2\times1.643\times10^{-27}

k=317.8\ N/m

Hence, The force constant of the spring is 317.8 N/m.

0 0
2 years ago
A nerve signal is transmitted through a neuron when an excess of Na+ ions suddenly enters the axon, a long cylindrical part of t
ivolga24 [154]

Answer:

1.32.225 N/C, direction is away from the point charge

2. 8.972*10^-12 C

3. the field is directed away from the axon

Explanation:

The electric field can be calculated as shown below:

E = k*|q|/r^2

Where:

E = electric field; k = 8.98755*10^9 N*m^2/C^2; r = distance between the measured field and point charge = 0.05 m; q = the point charge

For 0.100 m of the axon, the value of q is:

q = (5.6*10^11)*(+e)*(0.001)

+e = charge of an electron = 1.60217*10^-19 C

Thus:

q = (5.6*10^11)*(1.60217*10^-19)*(0.0001) = 8.972*10^-12 C

Therefore:

E = (8.98755*10^9)*(8.972*10^-12)/0.05^2 = 32.255 N/C

A positive point charge always produce an electric field that is directed away from the field while a negative point charge produces an electric field that is directed toward the field

3 0
2 years ago
If a magnet is broken into two pieces, what happens to the magnetic poles? One piece will have a north pole, while the other pie
Yuri [45]
Each piece will still have a North and South Pole
5 0
2 years ago
Read 2 more answers
The pfsense firewall, like other firewalls on the market, relies on __________ to expose an ip address from the private network
sashaice [31]
T<span>he pfsense firewall, like other firewalls on the market, relies on the subnet mask to expose an ip address from the private network and bind it to an address on the public network. </span>
6 0
2 years ago
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