Gaps need to be left in lengths of railway lines to prevent buckling in hot weather Select one: O True O False

Q: Squid 8.5°C -9 mV EM

A: Induction is the magnetic field which is proportional to the rate of change of the magnetic field.…

Q: esteel plate if e rivets and the

A:

Q: Determine the tension developed in each cord required for equilibrium of the 20-kg lamp. Determine…

A: Given Mass of lamp, m=20 kg Standard Quantities g=9.8 m/s2

Q: Choose the BEST answer to the following: The electric field inside the dome of a Van de Graaff…

A: The electrons inside the dome repel each other and they reach the domes outer sphere. This way the…

Q: Select all the contact forces. Applied Gravitational Magnetic Electrical Frictional Air resistance…

A: Select all the contact forces

Q: Create your own definition of the word resilient

A: A person or a object or a matter is said to be resilient if it is capable of withstanding shock…

Q: 92) A -4j, B=-3i-6j = 8i

A: Hai, since there are multiple sub parts posted, we will answer the first three sub parts. Given…

Q: Calculate the DOF (mobility). Show your accounting for L, J, J. Given: M-3(2-1)-2J₁-J₂ b)

A: (a) Number of links L= 7 Number of lower pairs J1= 7 Number of higher pairs J2= 0   DOF(Mobility) =…

Q: An electrician holds a chandelier of mass 2.9kg upwards against a ceiling with a force of 47N…

A:

Q: Why are lightening rods normally at higher elevation than the buildings they protect?

A:

Q: Which of the following would not make for a good insulator of electricity? O A metal pipe O Wood O…

A: Required : Which of the following is not a good insulator.

Q: An electric iron connected to a 110-V source draws 9A of current. Show that the amount of heat it…

A:

Q: Historically, replacing dirt roads with paved roads reduced friction on vehicles. Replacing paved…

A:

Q: Does the voltage output increase when a generator is made to spin faster? Defend your answer.

A: Given: Voltage output

Q: Was there force transfer from one syringe to the other

A: Answer Two syringes are connected together, push on one syringe and you can feel the force…

Q: High-voltage power lines are used to transport electricity cross country. These wires are favored…

A: The current flows from a region of high potential to a region of low potential.

Q: Differentiate between conductors and insulators.

A: Conductors are permit free flow of electrons from one atom to another, and also it will permit…

Q: After Galvani's later experiments with two types of metal wire and no known source of electricity…

A: Galvani through his experiments was trying to study the effects of electric sparks on the muscular…

Q: Why is dry air insulator and moist air conductor of electricity

A: Air is a bad conductor of electricity. The dry air contains static charges, which do not conduct…

Q: What you can detect by using Compass and iron fillings? Select one: O a. Electricity а. b. Gravity…

A: Required :: What we can detect using compass and iron filling.

Q: A is measured in coulombs, B is measured in seconds, C is measured in volts, and D is measured in…

A:

Q: what is an example of a pseudoscience explanation of why lightning travels through the air?

A: We have to explain why lightning travels through the air.

Q: What is the terminal velocity of an object in the resistive medium?

A:

Q: hat role do conductors play in modern technology?

A: Conductors are the materials which allow the free flow of electrons from themselves. For example-…

Q: What are some of the challenges associated with the introduction of the electric train?

A: High capital cost Uneconomical on lightly trafficked routes Lack of flexibility since they need a…

Q: Select scalar quantities from the following physical quantities. O Area O Magnetic Field Momentum…

A: Scalar quantities are those quantities which have only magnitude or numerical value. They do not…

Q: 41) In an experiment, a wire was stretched by a load and the following quantities were recoded: load…

A: The equation of stress is given by, σ=LoadCross-sectional area The equation of strain is given by,…

Q: Give 5 scientists and their contributions to the development/advancement of the field of electricity…

A: (1) Andre-Marie Ampere : Andre-Marie Ampere was the first scientist to attempt to conceptually…

Q: Cables made of fibre optics and coaxial are not the same

A: in this question  we compare optical fibre to coaxial cables.

Q: to do: 1. Below are objects normally found at home. List down which has an electric motor. Use a…

A:

Q: A. Rubber Band [ Select ] B. Paper Clip [Select] C. Toothpick [ Select] D. Iron Nail [ Select] E.…

A: Conductor: those objects which have free electrons in them and they conduct electricity. Insulators:…

Q: Calculate the electric energy requirement when all the vehicles are electrified. Pick an…

A: Given : To calculate the electric energy requirement when all the vehicles are electrified.

Q: makes a 25° angle with the vertical and the other . makes a 15° angle with the vertical. Find the…

A: Given  A lithograph supported by two wires

Q: How magnetic field act as a centripetal force or centrifugal force?

A:

Q: A hanging Slinky toy is attached to a powerful battery and aswitch. When the switch is closed so…

A: Since the coils of the slinky attract each other, they will compress when they carry current.

Q: Determine the tension developed in each cord required for equilibrium of the 20-kg lamp. Determine…

A: At joint D, the free body diagram is

Q: conductors: sphere inside thick Question 6. Potentia

A:

Q: A certain battery with potential difference of 2 Volts can deliver 10 Joules of energy, determine…

A:

Q: A student is asked to build and demonstrate a working temporary magnet called an electromagnet. The…

A: Given : To choose the correct pair of items to make a electromagnet.

Q: Putting an electric heating pad on your knee is an example of

A: In the question it is said that putting an electric heating pad on your knee  In electric heating…

Q: 32em An measurig anemometer for wind Small 120 speed metal Cups, mocnteds, of each four ensists mass…

A: Given data : Metal cup's mass, m=120 g=0.12 kg Rod's length, a=32 cm= 0.32 m r=0.322=0.16 m…

Q: What is the purpose of defining power.

A: Power is defined as the rate at which work is done on an object. The unit of power is J/s or W.

Q: An electric iron connected to a 110-V source draws 9 A of current. Show that the amount of heat it…

A: