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Anvisha [2.4K]
3 years ago
6

You are stopped a red light and you are in the front car at an intersection. Thinking as a defensive driver, describe what your

actions will be when the light turns green.
Physics
1 answer:
Airida [17]3 years ago
8 0
Proceed to go when the light turns green with caution watching out for other drivers to prevent and accident
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Niobium metal becomes a superconductor when cooled below 9K. Itssuperconductivity is destroyed when the surface magnetic fieldex
elena-14-01-66 [18.8K]

Answer:

the maximum current is 500 A

Explanation:

Given the data in the question;

the B field magnitude on the surface of the wire is;

B = μ₀i / 2πr

we are to determine the maximum current so we rearrange to find i

B2πr = μ₀i

i = B2πr / μ₀

given that;

diameter d = 2 mm = 0.002 m

radius = 0.002 / 2 = 0.001 m

B = 0.100 T

we know that permeability; μ₀ = 4π × 10⁻⁷ Tm/A

so we substitute

i = (0.100)(2π×0.001 ) / 4π × 10⁻⁷

i = 500 A

Therefore, the maximum current is 500 A

4 0
3 years ago
A car drives around a curve with a radius of 42 m at a velocity of 24m/s. What is the centripical acceleration of the car?
Vinvika [58]

Answer:

13.71

Explanation:

13.71 miles per hour

7 0
3 years ago
A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?
Vadim26 [7]
We have to calculate how many square feet a school custodian has to wax and to choose the correct answer. A gymnasium floor is in the shape of the square ( 20 by 20 feet ). The area of the square is : A = L^2. For L = 20 ft, A = 20^2 = 20 * 20 = 400 ft^2. Answer: <span>D. 400 square feet.</span>
5 0
3 years ago
a motivated approach to dream interpretation claims that most dreamers will interpret their dreams _____.
MakcuM [25]

The answer is

D.  in a straightforward, objective manner

5 0
3 years ago
Why cant your rocket could never reach the speed of light?
Oksanka [162]

Answer:

The length of the object would shrink to zero which is not possible.

Explanation:

A rocket or any body cannot reach the speed of light because according to theory of relativity the and the Lorentz factor the length of the object would shrink to zero and the time dilation for that body would be infinite.

The Lorentz factor is given as:

\gamma=\frac{1}{\sqrt{\frac{v^2}{c^2} } }

where:

v = speed of the moving object

c = speed of light

4 0
3 years ago
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