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
Sonja [21]
3 years ago
13

A 200-turn rectangular coil having dimensions of 3.0 cm by 6.0 cm is placed in a uniform magnetic field of magnitude 0.76 T. (a)

Find the current in the coil if the maximum torque exerted on it by the magnetic field is 0.14 N · m. A (b) Find the magnitude of the torque on the coil when the magnetic field makes an angle of 25° with the normal to the plane of the coil. N · m
Physics
1 answer:
Lapatulllka [165]3 years ago
3 0

Answer:

(a). Current, I = 0.512 A = 512 mA

(b). Torque, \tau = 0.059 N.m

Given:

Number of turns in the rectangular coil, n = 200 turns

Area of the coil with dimensions 3.0 cm by 6.0 cm, A = 3.0\times 6.0 = 18.0 cm^{2} = 18.0\times 10^{- 4} m^{2}

Intensity of magnetic field, B = 0.76 T

maximum torque, \tau_{max} = 0.14 N.m.A

angle, \theta = 25^{\circ}

Solution:

(a) Current in the coil, I can be calculated by the given relation:

\tau_{max} = nABI

Therefore,

I = \frac{\tau_{max}}{nAB}

Now substituting the given values in the above eqn:

I = \frac{0.14}{200\times 18.0\times 10^{-4} \times 0.76}

I = 0.512 A = 512 mA

(b)  Magnitude of torque can be calculated by the given relation:

\tau = \tau_{max}sin\theta

Now,

\tau = 0.14\times sin25^{\circ}

\tau = 0.059 N.m

You might be interested in
2. A 50 kg diver is standing on the edge of a 15 m high cliff. What is his potential energy?
Lera25 [3.4K]

Answer:

3675 J

Explanation:

Gravitational Potential Energy = \frac{1}{2} × mass × g × height

( g is the gravitation field strength )

Mass = 50 kg

G = 9.8 N/kg ( this is always the same )

Height = 15 m

Gravitational Potential Energy = \frac{1}{2} × 50 ×9.8 × 15

= 3675 J

3 0
3 years ago
Two men are standing on a frictionless ice surface holding opposite ends of a rope. One man (mass = 80 kg) pulls on the rope wit
ankoles [38]

Answer:

The acceleration of man 1 and 2 is 3.125\ m/s^2 and 4.167\ m/s^2.

Explanation:

Mass of man 1, m₁ = 80 kg

Mass of man 2, m₂ = 60 kg

One man pulls on the rope with a force of 250 N.

Let a₁ is acceleration of man 1,

F = m₁a₁

a_1=\dfrac{F}{m_1}\\\\a_1=\dfrac{250}{80}\\\\a_1=3.125\ m/s^2

Let a₂ is acceleration of man 1,

F = m₂a₂

a_2=\dfrac{F}{m_2}\\\\a_2=\dfrac{250}{60}\\\\a_2=4.167\ m/s^2

So, the acceleration of man 1 and 2 is 3.125\ m/s^2 and 4.167\ m/s^2.

7 0
3 years ago
An atom that has a negative four charge will have which of the following? Question 1 options: 4 more protons than electrons An e
Lilit [14]
Electrons: negative charge
Protons: positive charge
Neutrons: negative charge

The atom would have to have more electrons than protons

Hope this helps :)
3 0
3 years ago
How much work is done in holding a 10 newton sack of potatoes while waiting in line at the grocery store for 3 minutes.​
hodyreva [135]

Answer:

Zero

Explanation:

W = F × s

F = 10 N,

t = 3min = 180sec

s = 0( no change in postion)

W = 10 ×0

W = 0

4 0
3 years ago
The barrel of a rifle has a length of 0.89 m. A bullet leaves the muzzle of a rifle with a speed of 620 m/s. What is the acceler
guapka [62]

Answer:

215955.06 m/s^2

Explanation:

length of barrel, s = 0.89 m

initial velocity of the bullet, u = 0 m/s

Final velocity of the bullet, v = 620 m/s

Let a be the acceleration of the bullet in the barrel

Use third equation of motion, we get

v^{2}=u^{2}+ 2as

620^{2}=0^{2}+ 2\times a \times 0.89

a = 215955.06 m/s^2

Thus, the acceleration of the bullet inside the barrel is  215955.06 m/s^2.

6 0
3 years ago
Other questions:
  • Two long, straight parallel wires 8.2 cm apart carry currents of equal magnitude I. The parallel wires repel each other with a f
    10·1 answer
  • In electroplating, the object to be plated is which part of an electrolytic cell? cathode or anode
    8·2 answers
  • A student is bouncing on a trampoline. at her highest point, her feet are 65 cm above the trampoline. when she lands, the trampo
    14·1 answer
  • In what type of job might being a difficult person not be much of a liability ?
    8·1 answer
  • In the diagram, ∠D is b
    6·1 answer
  • Pls explain the following equation...
    8·1 answer
  • A wooden block has a volume of 12 cm3 and a density of 3 g/cm3. What is the mass of the wooden block?
    8·2 answers
  • Megan accelerates her skateboard from 0 m/s to 8 m/s in 2 seconds. What is the magnitude of the acceleration of the skateboard?
    14·1 answer
  • What can cause electricity to jump across a gap
    11·1 answer
  • 4) For the situation pictured below, F1 = 20.0 N east and F2 = 30.0 N west ,
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!