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3 years ago

When entering a bicycle lane to make a right turn, within how many feet must you enter the lane before making the turn?

Physics

1 answer:

vladimir1956 [14]3 years ago

8 0

Answer:

200 feet

Explanation:

Most streets in US with bike lane, especially San Francisco, when entering a bicycle lane to make a right turn, you must enter 200 feet to the lane before making the turn.

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A car magazine article claims that the new UltraCar 5000, only $10,000,000, can travel around a 50 m radius curve at 200 m/s.

Maksim231197 [3]

Explanation:

it could be possible if the car has all the right aro dynamics

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3 years ago

Each element has an atomic number state which is meant by atomic number

netineya [11]

Answer: The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons. The number of protons in an atom is called its atomic number. This number is very important because it is unique for atoms of a given element. All atoms of an element have the same number of protons, and every element has a different number of protons in its atoms.

Explanation:

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3 years ago

A 500g air-track glider attached to a spring with spring constant 10 N/m is sitting at rest on a frictionless air track. A 250 g

d1i1m1o1n [39]

To solve this problem it is necessary to apply the conservation equations of the moment for an inelastic impact or collision. In turn, it is necessary to apply the equations related to the conservation of potential energy and kinetic energy.

Mathematically this definition can be expressed as

$m_1v_1+m_2v_2=(m_1+m_2)v_f$

Where,

$v_{1,2} =$ Initial velocity of each object

$m_{1,2} =$ Mass of each object

$v_f =$ Final velocity

Our values are given as

$m_1 = 0.25kg\\m_2 = 0.5kg\\v_1 = 1.2m/s\\v_2 = 0m/s$

Replacing we can find the value of the final velocity, that is

$0.750v_f = 0.25*1.20+0.5*0$

$v_f = 0.4m/s$

From the definition of the equations of simple harmonic motion the potential energy of compression and equilibrium must be subject to

$KE_{compressed}+PE_{compressed} =KE_{equilibrium} +PE_{equilibrium}$

Since there is no kinetic energy due to the zero speed in compression, nor potential energy at the time of equilibrium at the end, we will have to

$0+\frac{1}{2}KA^2 = \frac{1}{2}(m_1+m_2)v_f^2+0$

Re-arrange to find A

$A = \sqrt{\frac{m_1+m_2}{k}v_f}$

$A = \sqrt{\frac{0.25+0.5}{10}(0.4)}$

$A = 0.11m$

Finally, the period can be calculated through the relationship between the spring constant and the total mass, that is,

$T = 2\pi \sqrt{\frac{m_1+m_2}{k}}$

$T = 2\pi \sqrt{\frac{0.5+0.25}{10}}$

$T = 1.7s$

6 0

3 years ago

Corresponding propositions cannot both be false.

Fofino [41]

Answer:

Suggestions are opposite when the two of them can't be valid. An A suggestion, e.g., "all giraffes have long necks" can't be valid simultaneously as the comparing E recommendation: "no giraffes have long necks." Note, in any case, that relating An and E suggestions, while opposite, are not conflicting.

Explanation:

8 0

4 years ago

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Why does a vibrating simple Pendulum not produce any sound????

Yuri [45]

Human ear can hear only the sounds having frequency from 20 Hz-20,000Hz but the simple pendulum produces a sound having frequency much less than 20Hz so we cannot hear it.

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4 years ago

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