1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dmitriy555 [2]
3 years ago
14

A copper wire of length 16 cm is in a magnetic field of 0.19 T. If it has a mass of 9.0 g, what is the minimum current through t

he wire that would cause a magnetic force equal to its weight?
Physics
1 answer:
Sergeeva-Olga [200]3 years ago
7 0

Answer:

2.9 A

Explanation:

L = 16 cm = 0.16 m

B = 0.19 T

m = 9 g = 0.009 kg

Let the minimum current be i.

Magnetic force is balanced by the gravitational force

B x i x L = m x g

0.19 x i x 0.16 = 0.009 x 9.8

i = 2.9 A

You might be interested in
What is the importance of measurement? <br>​
Kruka [31]

Answer:

To know the time ,length area

8 0
3 years ago
A Van de Graaff generator is one of the original particle accelerators and can be used to accelerate charged particles like prot
Rzqust [24]

Answer:

595391.482946 m/s

3.21875\times 10^{6}

Explanation:

E = Energy = 1.85 keV

I = Current = 5.15 mA

e = Charge of electron = 1.6\times 10^{-19}\ C

t = Time taken = 1 second

m = Mass of proton = 1.67\times 10^{-27}\ kg

Velocity of proton is given by

v=\sqrt{\dfrac{2E}{m}}\\\Rightarrow v=\sqrt{\dfrac{2\times 1.85\times 10^3\times 1.6\times 10^{-19}}{1.67\times 10^{-27}}}\\\Rightarrow v=595391.482946\ m/s

The speed of the proton is 595391.482946 m/s

Current is given by

I=\dfrac{\Delta Q}{t}\\\Rightarrow \Delta Q=It\\\Rightarrow \Delta Q=5.15\times 10^{-3}\times (1\ sec)\\\Rightarrow Q=5.15\times 10^{-3}\ C

Number of protons is

n=\dfrac{Q}{e}\\\Rightarrow n=\dfrac{5.15\times 10^{-3}}{1.6\times 10^{-19}}\\\Rightarrow n=3.21875\times 10^{6}\ protons

The number of protons is 3.21875\times 10^{6}

3 0
3 years ago
11. A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting?
Marianna [84]
I found the answer for you if u need any help ask anytime!

3 0
3 years ago
A worker pushes horizontally on a large crate with a force of 200 N, and the crate is moved 3.5 m. How much work was done in Jou
sattari [20]

Work = (force) x (distance) =

           (200 N) x (3.5 m)  =  <em>700 joules</em>


6 0
4 years ago
1. What were the 3 basic concepts of government that the English brought with them to North America?
aev [14]

Answer:

1)limited system of government

2)representative system of government

3)individual rights system of government

Explanation:

the 3 basic concepts of government that the English brought with them to North America are listed in the answer

7 0
3 years ago
Other questions:
  • 3. Can there be forces acting on an object at rest? Explain why or why not.
    13·1 answer
  • You perform the Hooke's Law experiment and create a plot of Displacement vs. Force. You add a linear fit and find the following
    8·1 answer
  • A man can throw a ball a maximum horizontal distance of 56.1523 m. The acceleration of gravity is 9.8 m/s 2 . How far can he thr
    8·1 answer
  • You are comparing a reaction that produces a chemical change and one that produces a physical change. What evidence could you us
    12·2 answers
  • A fission reaction is one in which the weaker electrostatic repulsion force wins out over the ___________ nuclear force and, as
    12·2 answers
  • What is the first stage of a thunderstorm?
    10·2 answers
  • Which of the following are examples of levers?
    7·1 answer
  • __________ is the theory that living things come from other living things.
    12·1 answer
  • How much work is done when a 30 kg mass is to be lifted through a height 6m?(1kg=9.8N​
    12·1 answer
  • Why did humans first develop culture?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!