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horsena [70]
2 years ago
13

Dòng điện I = 20 A chạy qua đoạn dây dẫn có dạng như hình vẽ. Biết bán kính của cung tròn là R = 5 cm. Tính cường độ từ trường t

ại O.
Physics
1 answer:
kvv77 [185]2 years ago
7 0

H=I/2πr

H=20/(2*π*5)

H=0.6366

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Given that water at standard pressure freezes at 0∘C, which corresponds to 32∘F, and that it boils at 100∘C, which corresponds t
barxatty [35]

Answer:

In two significant figure 360K

Explanation:

The temperature difference (ΔT) can be calculated as the boiling temperature minus the freezing temperature in Fahrenheit.

Hence,

ΔT = 212 - 32

ΔT = 180°F

To convert to °F to kelvin, we use the formula below

= (°F - 32) × 5/9 + 273.15

= (180°F - 32) × 5/9 + 273.15

= 355.37K ⇔ 360K

3 0
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3 0
3 years ago
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Whitepunk [10]

Answer:

.737 v

Explanation:

Since they are in series....they all have the same current running through them.....find the total resistance to calculate the current:

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Now the voltage across ecah resistor is   I R

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7 0
2 years ago
A bullet with a mass of 0.020 kg collides with a 2.5 kg wooden block at
kondaur [170]

Answer:

151.2 m/s

Explanation:

m1 = 0.020 kg

m2 = 2.5 kg

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0.020v1 + 0 = (0.020 +2.5)(1.2)

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5 0
3 years ago
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julia-pushkina [17]
A) -3.75 meters/second
A=(20^2-80^2)/(2x800)
=(400-6400)/1600
=-6000/1600
=-3.75
B) 16 seconds
t=(20-80)/-3.75
=-60/-3.75
=16
3 0
3 years ago
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