The magnitude of the torque acting on the rotor of a motor minimizes when the angle between the magnetic dipole moment and the external magnetic field is _____ , while the magnetic potential energy minimizes when the angle between the same quantities is ____. (A) 0◦, 0◦ (B) 180◦, 0◦ (C) 0◦, 90◦ (D) 0◦, 180◦ (E) 90◦, 0◦

Q: n the figure, block 2 (mass 1.40 kg) is at rest on a frictionless surface and touching the end of an…

A:

Q: Illustrate how can magnet be demagnetized ?

A: Magnet can be demagnetized in following ways. a) It can be demagnetized by heating past the Curie…

Q: Use the following information to answer the next question A sealed syringe can be used to determine…

A: The given question involves the concept of Gas Laws. Boyle's Law: P1V1 = P2V2

Q: Battery V=12V + = ? Current flow Current flow Bulb R=3 Q

A: Introduction :  In this question we are provided with value of voltage and resistance . with these…

Q: A rod 12.0 cm long is uniformly charged and has a total charge of -23.0 µC. Determine the magnitude…

A: Write the given data. L=12 cmQ=-23 μCr=32 cm

Q: A teapot with a surface is to be plated with Silver. It is attached to the negative electrode & an…

A: Given Surface area,, A=0.0325 m2 Density of silver, ρ=1.05×104 kg /m3 Length, l=0.133×10-3 m…

Q: The diagram below shows four charges at the corners of a square of sides d = 2.00 m. Here, q₁ = 9₂ =…

A:

Q: F₁ F₂ Figure 5-21 Question 3. 6:36 If the value of the inclined force (force 1) is 200 newtons and…

A:

Q: Find the weight on earth of a body whose mass a) 300 kg b) 250gm

A: Part (a): Given:The mass of the object is 300 kg.

Q: lloo bar if the exit quality of the steam is what will be the driving pressure (Assume S to be 1,4)

A: We know the pressure of the liquid  P=hdg..........................(1) h=depth d=density…

Q: In the figure, block 1 has mass m₁ = 450 g, block 2 has mass m₂ = 510 g, and the pulley is on a…

A:

Q: n your point of view , what is the importance of gathered antropometric data? Justify your answer .

A: Anthropometric statistics  are statistics on human body dimension and shape and are the base using…

Q: For the mechanism shown below, compute the magnitude of the force (F) required to break contact at…

A:

Q: Comment on the Phase velocity (Vp) of the waves for  increased values of Δω and Δk

A: Phase velocity is the velocity with which phase of a wave travels. The superposition of waves form…

Q: Find force Mass=0.08 kg Acceleration=2.312 m/s2

A: Given data : Mass=m Acceleration=a   Required : Force

Q: A person wearingg a safety belt can withstand a acceleration of -300m/s2. What is the safe stopping…

A: Required Safest stopping distance

Q: the answer is not clear

A:

Q: 4) Use the Right Hand Rule for cross products to determine the direction of the force acting on the…

A: It is given that, each of the wires has a length of 10 m and they are 1.8 m apart from each other.…

Q: is it south or north

A: It is north.

Q: A drum rotates around its central axis at an angular velocity of 10.9 rad/s. If the drum then slows…

A:

Q: I. Direction of the induced magnetic field II. Magnitude of the induced EMF III. Direction of the…

A: Say we have a circular loop and then a magnet with the north pole is brought towards the loop. This…

Q: Calculate the net torque (magnitude and direction) on the beam in the figure below about the…

A:

Q: Find the pressure Force=33 N Area=2.5 m2

A: We know thatP=FAWhereP=PressureF=ForceA=Area

Q: 5. A 210-N mass is suspended from a horizontal beam by two cables that make angles of 29° and 53⁰…

A:

Q: pls help me answer tysm Certain neutron stars are believed to be rotating at about 1.00 rev/s. If…

A:

Q: Name and define the SI unit of time. How is it related to; 1. minute 2.hour 3. day and A Year

A: SI unit of time is second. Second is represented by the letter s. Minute, hour, day and year are…

Q: 20. Particles A,B,C and D form a square with 4.13cm sides. Particles A and B both have charges of…

A: The following problem is related to the topic Electrostatics. This involves the properties related…

Q: A calculator is set on top of a book and the book is then pushed so that it slowly accelerates…

A: Given  person is pushing the book without touching the  calculator and book is accelerating with…

Q: A graph of x vs. t4, with x on the vertical axis and t4 on the horizontal axis, is linear. Its slope…

A:

Q: 1 A pilot flies on a heading of N40W with an airspeed of 240 km/h. Her actual ground velocity is 250…

A:

Q: Block B in the figure weighs 628 N. The coefficient of static friction between block and table is…

A:

Q: In what ways are the gravitational and electrostatic forces similar? Select all correct answers.…

A:

Q: greater heights. 82. In an amusement park water slide, pec INT essentially frictionless tube. The…

A:

Q: Use the following information to answer the next question A sealed syringe can be used to determine…

A:

Q: Calculate the density of solid from the following data: (a) Mass of solid = 72 g (b) Initial volume…

A:

Q: time derivative of velocity is called

A: The time derivative of velocity (v) is called acceleration (a). Mathematically: a=dvdt here, t=time…

Q: A sprinter accelerates to his maximum speed in 5 s. He then maintains this speed for the remainder…

A:

Q: A rocket travels at a constant speed of 4000 m/s. How long would it have to travel from the surface…

A: In the given question, the speed of rocket (v) = 4000m/s the final weight of the rocket becomes 80%…

Q: Velocity at which the force resistance is just equal and opposite to the weight of the body called…

A: Say we have an object having weight W moving with some velocity v which experiences a resistive…

Q: Mass of a car is 230 kg, calculate the weight?

A: Given that : Mass of car m = 230 kg Let weight of car is w

Q: • The mass and speed of the three vehicles, A, B, and C, are shown. Rank them from greatest to least…

A:

Q: mass 12 kg is at a certain height Au object of above the ground. If the P.E. of the object is 4805…

A: Given data :                      Potential energy     =    P•E                         Mass    =…

Q: . Find the average rainfall

A: Given; The rainfall in a city on each day of a week is recorded below.  find the average rainfall…

Q: Consider a negative charge moving with a velocity, v, in a uniform magnetic field, B, determine the…

A:

Q: light 750 d) f) Warning light 620 3 x 108 b) Based from the table above answer the following…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: Find the potential energy of 2.4 kg mass kept at height of 7.2 m. Take g = 10 m/s²

A: Given Mass of the object = m = 2.4 kg Height = h = 7.2 m g = acceleration due to gravity = 10 m/s2…

Q: In the figure, block A (mass 1.9 kg) slides into block B (mass 2.2 kg), along a frictionless…

A:

Q: An airplane travels a distance of 500 km against the wind in one hour and 45 minutes. Travelling the…

A:

Q: A fly lands on one wall of a room. The lower-left corner of the wall is selected as the origin of a…

A: a) OP =(1.95)2+(1.10)2          =3.8025+1.21          =5.0125           = 2.238mdistance from…

Q: An object suspended from a rope falls at a constant velocity downward, i.e. the tension in the rope…

A: Free fall is defined as the motion of the object where gravity is the only force acting upon it.…

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.