Your Perfect Assignment is Just a Click Away

We Write Custom Academic Papers

100% Original, Plagiarism Free, Customized to your instructions!

glass
pen
clip
papers
heaphones

Montana State University Billings Newtons Laws Discussion Questions

Montana State University Billings Newtons Laws Discussion Questions

Question Description

I’m working on a physics writing question and need support to help me understand better.

last person plagerised … use only… your own… words

DISCUSSION 2 – NEWTON’S LAWS

Now let’s consider forces and Newton’s Laws. Discuss the following. A box with a mass of 100 kg is on a frozen lake (no friction). A force of 200 N to the left, and another force of 200 N to the right act on the box. Describe the motion of the box.

Also, if a car with a constant speed is turning a level corner, is there a net force acting on the car?

DISCUSSION 3 – CONSERVATION OF ENERGY

You have been studying ideas of potential energy and kinetic energy (KE). Potential energy due to position in the earth’s gravitational field or the potential energy of a stretched or compressed spring are examples of mechanical potential energy (PE). Energy stored in a lump of coal that is released when it is burned is chemical potential energy and not mechanical potential energy. This is the subject of chemistry.

The sum of kinetic and mechanical potential energy is called total mechanical energy. If there is no friction. The total mechanical energy of a system is conserved or constant if forces such as gravity or spring forces are the only forces acting on the object. These are called conservative forces. When a rock is thrown up, down, horizontally, or at a weird angle and air resistance is ignored, the total mechanical energy of the rock stays constant, or KE + PE = constant. This also means KE can become PE and vice versa. If there is friction, the work done by friction “gobbles up” total mechanical energy. For example, if you jump off of a high diving board into a swimming pool, as you fall toward the water, your initial potential energy becomes kinetic energy, but your total mechanical energy is conserved until you hit the water.

Discussion Question: What happens to your total mechanical energy when you hit the water? Where does the lost mechanical energy go? Why do you fill a swimming pool with water before diving in? Can you think of another important example of non-conservation of total mechanical energy?

Now I want to make a very important point. Total mechanical energy is conserved if there is no friction or other non-conservative forces doing work. If non-conservative forces are doing work, then total mechanical energy is not conserved. Total energy is all energy, not just mechanical energy. Now here is the big lesson, total energy is always conserved!!! This is a fundamental law of nature.

DISCUSSION 4 – CARS

I have a couple of car questions for you.

1. Does your gas-guzzling car conserve energy? What does it mean to say your car wastes energy?

2. Your car battery is a 12 volt battery. You can’t start your car with a 12 volt flashlight battery. Why not?

DISCUSSION 5 – NUCLEAR PHYSICS

The final discussion topic has three parts and is about nuclear physics. Some background information first. By the way, there will be a few questions on the final exam about this background information.

The modern theory of the atom is that the atom consists of a nucleus of protons and neutrons. Electrons surround the nucleus not as particles orbiting the nucleus, but as standing matter waves like the standing waves on a guitar string that has been plucked. As such, there location is not precisely known. Most of the atom is empty space. The total energy of an electron in an atom is quantized meaning it has certain discrete energy values such as 1 or 2 or 3 energy units, but nothing in between like 1,23 or 2.76 energy units. When an electron in an atom has a transition (i.e. falls) from a higher energy state to a lower energy state, the atom can give off a particle of light called a photon.

With regards to the nucleus, if the ratio of the number of neutrons to the number of protons is greater than about 1. The nucleus is unstable. First, the three main decay products of an unstable or radioactive nucleus are alpha particles, beta particles, and gamma rays. Alpha particles are just the nucleus of a helium atom (2 protons and 2 neutrons). They do not penetrate very far. Dead skin or a sheet of paper can stop them. Beta particles are electrons and can penetrate a thin layer of steel. A 1-cm thick piece of plastic can stop them. Gamma rays are high-energy photons and are very penetrating.

If a radioactive isotope that emits alpha particles is ingested, the living tissue stops them and absorbs their energy. Smoke detectors contain a radioactive isotope that emits alpha particles.

Discussion Topic

Part 1: Are smoke detectors safe?

Part 2: Radon gas is an inert gas that is not toxic or poisonous, but is radioactive and emits alpha particles. Why is radon dangerous?

Part 3: What are the advantages and problems with nuclear energy?

Order Solution Now

Our Service Charter

1. Professional & Expert Writers: Gold Grades only hire the best. Our writers are specially selected and recruited, after which they undergo further training to perfect their skills for specialization purposes. Moreover, our writers are holders of masters and Ph.D. degrees. They have impressive academic records, besides being native English speakers.

2. Top Quality Papers: Our customers are always guaranteed papers that exceed their expectations. All our writers have +5 years of experience. This implies that all papers are written by individuals who are experts in their fields. In addition, the quality team reviews all the papers before sending them to the customers.

3. Plagiarism-Free Papers: All papers provided by Gold Grades are written from scratch. Appropriate referencing and citation of key information are followed. Plagiarism checkers are used by the Quality assurance team and our editors just to double-check that there are no instances of plagiarism.

4. Timely Delivery: Time wasted is equivalent to a failed dedication and commitment. Gold Grades is known for timely delivery of any pending customer orders. Customers are well informed of the progress of their papers to ensure they keep track of what the writer is providing before the final draft is sent for grading.

5. Affordable Prices: Our prices are fairly structured to fit all groups. Any customer willing to place their assignments with us can do so at very affordable prices. In addition, our customers enjoy regular discounts and bonuses.

6. 24/7 Customer Support: At Gold Grades, we have put in place a team of experts who answer all customer inquiries promptly. The best part is the ever-availability of the team. Customers can make inquiries anytime.