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MA_775_DIABLO [31]
3 years ago
9

A copper wire has a length of 1.50 m and a cross sectional area of 0.380 mm2. If the resistivity of copper is 1.70 ✕ 10−8 Ω · m

and a potential difference of 0.700 V is maintained across its length, determine the current in the wire (in A).
Physics
1 answer:
sweet [91]3 years ago
5 0

Answer: 1.044 E -17 A

Explanation:

L =1.50m

A = 0.380mm = 3.8E- 7

Resistivity p =1.70 E-8

R =pl/A

R = 1.70 E-8 × 1.5/ 3.8 E-7

R = 6.71 E-16 ohms

V = IR

0.700 = I × 6.71 E-16

I =1.044E-17 A

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A submarine deep underwater releases a bubble of air. The total pressure at this depth is P. The bubble has diameter, D, and abs
Sunny_sXe [5.5K]

Answer:

P V = n R T      ideal gas equation

P2 V2 / P1 V1 = T2 / T1    

V2 / V1 = T2 / T1 * P1 / P2 = T2 P1 / (T1 P2)

V2 / V1 = (1.17 T1) / T1 * (P1 / .22 P1)      assuming absolute temp as 1.17 P1

V2 / V1 = 1.17 / .22 = 5.32

V = 4/3 pi R^3 = 4/3 pi (D/2)^3 = 4/3 pi D^3 / 8 = pi D^3 / 6

V2 / V1 = D2^3 / D1^3

D2 = (V2 / V1 * D1^3)^1/3

D2 = 5.32^1/3 * D = 1.75 D      (D1 = D)

7 0
3 years ago
In the article, what is the result of the conflict between the American public and the U.S. Food and Drug Administration (FDA)?
user100 [1]

Food and drug administration (FDA) is used for protecting the public health in safety, security, drugs, biological products, and medicinal devices.

Explanation:

The U.S food and Drug Act  tells about the sale of misbranded or adulterated food and drugs in interstate commerce and had a foundation for the nation's first consumer protection agency.

The federal law is passed to establish the quality standards for foods, drugs and medical devices manufactured and sold in U.S.

This act has a new consumer protection against unlawful cosmetics and medical devices and enhances the government's ability to enforce the law. The main goal of FDA is to make food and drug safe for public consumption.

4 0
3 years ago
PLLLZ HELP Which of the following is a seamount?
o-na [289]

1. The seamount of the following given option is option D, i.e. Loihi.

2. Hawaii would be the location for the most active volcano according to the picture given.

Answer: Option D and Option B

<u>Explanation:</u>

1. Loihi is a seamount, which is a uplifted mountain risen to a certain altitude from the oceanic floor, but has no connection with the sea floor and hence do not come into the purview of being an island. sea mount are thus known as the submarine peak.

2. According to the diagram given, active site for volcano is Hawaii. the reason being that the hot spot for the volcanic activity is found beneath the Hawaiin island, whose tremendous stress is experienced below the fault line of Hawaii making it the most active site for volcano as per the seismological findings.

4 0
4 years ago
How do geologists construct the geologic column?​
Luda [366]

Answer:

They do this by joining pieces of different Rock sequences together from different places in the whole world.

Explanation:

Geologic columns are basically an arrangement of rock layers whereby the newest rocks are at the top while the oldest rocks will be at the bottom. Thus, it is like a timescale that's used to find the age of rock formation on the earth around the world.

3 0
3 years ago
When the mass of the cylinder increased by a factor of 3, from 1.0 kg to 3.0 kg, what happened to the cylinder’s gravitational p
const2013 [10]

Answer: Fourth option. It increased by a factor of 3.

Solution:

m1=1.0 kg

Cylinder's gravitational potential energy: Ep=m*g*h

Ep1=(1.0 kg)*g*h

Ep1=g*h

m2=3.0 kg

Ep2=(3.0 kg)*g*h

Ep2=3*g*h

Replacing g*h by Ep1 in the equation above:

Ep2=3*Ep1

Then, the cylinder's gravitational potential energy increased by a factor of 3.

3 0
4 years ago
Read 2 more answers
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