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Ipatiy [6.2K]
3 years ago
9

The curved section of a horizontal highway is a circular unbanked arc of radius 740 m. If the coefficient of static friction bet

ween this roadway and typical tires is 0.40, what would be the maximum safe driving speed for this horizontal curved section of highway?
Physics
1 answer:
kirill [66]3 years ago
8 0
The answer would be 54 m/s as the maximum speed
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(a) Find the frequency of revolution of an electron with an energy of 114 eV in a uniform magnetic field of magnitude 46.7 µT. (
stira [4]

Answer:

(a)  1.3 x 10^6 Hz

(b) 76.73 cm

Explanation:

(a)

the formula for the frequency is given by

f = B q / 2 π m

where, B be the strength of magnetic field, q be the charge on one electron, m is the mass of one electron.

B = 46.7 micro tesla = 46.7 x 10^-6 T

q = 1.6 x 10^-19 C

m = 9.1 x 10^-31 kg

f = (46.7 x 10^-6 x 1.6 x 10^-19) / (2 x 3.14 x 9.1 x 10^-31) = 1.3 x 10^6 Hz

(b) K = 114 eV = 114 x 1.6 x 10^-19 J = 182.4 x 10^-19 J

K = 1/2 mv^2

182.4 x 10^-19 = 0.5 x 9.1 x 10^-31 x v^2

v = 6.3 x 10^6 m/s

r = m v / B q

Where, r be the radius of circular path

r = (9.1 x 10^-31 x 6.3 x 10^6) / (46.7 x 10^-6 x 1.6 x 10^-19)

r = 0.7673 m = 76.73 cm  

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How do you find the missing terms in a number sentence?
FrozenT [24]

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<h3>What is a number sentence?</h3>
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  • In the US, Canada, UK, Australia, New Zealand, South Africa, and other countries, the phrase is used in the instruction of elementary-level mathematics.
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  • A mathematical statement about two expressions is made.
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Learn more about number sentences here:

brainly.com/question/13349953

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Which conditions are necessary for clouds to form?
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