Physics

posted by Debbie

PLEASE SOMEONE HELP ME WITH THIS DARN QUIZ. I'm so lost and all my teachers are too 'BUSY' to help me. :/ I'm getting so sick and tired of studying and not getting it but then having to take the blame for my instructor's folly.

2. Which of the following is a requirement that units in a correct formula or equation must always satisfy?
(Points : 1)
Each unit in the formula, expressed in SI base units, must be the same.

The units on both sides of the equals sign, expressed in SI base units, must be the same.

All units must be units only of mass, length, or time.

All masses must be in kilograms, all lengths in meters, and all times in seconds.


3. Momentum is a physical quantity calculated by multiplying mass by velocity (mv). Which of the following are equivalent units of momentum? Consult a table of units if you do not know, for example, what J is in base units. You may refer to the SI Derived Units chart on page 235 of Physics: Problems and Solutions to answer this question.
(Points : 1)
m/s

gramscentimeters

Ns

Js


4. A quantity called the impulse is the average force, in newtons, multiplied by the time the force is acting. Which of the following is a unit of impulse?
(Points : 1)
Js

J/kg

N/s

Ns


5. The electric field times the electric charge of a particle gives the electric force acting on the particle. The charge has units of coulombs (C) and the force is expressed in newtons (N). Suppose you are solving a physics problem in which you calculate an electric field. Which of these is a unit that your answer might have?
(Points : 1)
N

Ns

N/C

NC

  1. Elena

    1.The units on both sides of the equals sign, expressed in SI base units, must be the same.
    3.Ns (mv=Ft)
    4.Ns
    5.N/C

  2. Alejandra

    1.The units on both sides of the equals sign, expressed in SI base units, must be the same.
    3.Ns (mv=Ft)
    4.N.s
    5.N/C

  3. nica

    i am also confused

  4. Anna

    Number 2 was incorrect.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Studying for Calc

    I have a quiz on derivatives coming up and I really want to do well, but i'm not sure how to go about studying calc. i have no trouble studying for other subjects, but i'm doing poorly in calc and i need to make some changes in my …
  2. English

    I urgently need you to check these sentences for my Comemius project!!! I know it is long but what I need to say is quite complicated. I really hope you can help me. Tell me what you think of the project. 1) I'm terribly sorry I didn't …
  3. English

    I would like you, Writeacher, to check my letter since you know everything about the project and can help me with the word choice. I noticed I wrote two unfinished sentences in the first part of the letter. I'm posting them to you …
  4. English

    1. I am busy studying for the mid-term exam. 2. I am busy studying for the midterm exam. 3. I am busy studying for the mid-term exams. 4. I am busy studying for the mid-term exams. (Here in our country, During the period of the mid-term …
  5. English

    1. I am too tired to do my homework. 2. I am too tired to read the books. 3. I am too tired to do the project. 4. I am too tired to do the paperwork. 5. I am too tired to finish my homework. 6. I am too tired to finish reading the …
  6. English

    1. I am too tired to focus on the teaching. I am too tired to do the laundry. I am too tired to mop the floor. I am too tired to iron my uniform. I am too tired to clean the living room. I am too tired to arrange the things in the …
  7. science

    1. Which of the following is a good study habit?
  8. Science

    1. Which of the following is a good study habit?
  9. Science

    Which of the following is a good study habit?
  10. 8th grade ss

    I just need help studying the civil war. I only want to study. Another teacher of mine found out other students were cheating on a quiz and it was omitted. I don't want to cheat I just need help studying. My grades are very good, I …

More Similar Questions