About 78 of the air is composed of a)carbon dioxide. b)oxygen. c)nitrogen. ...

Author Question: About 78 of the air is composed of a)carbon dioxide. b)oxygen. c)nitrogen. ... (Read 111 times)

WhattoUnderstand

Hero Member
Posts: 517

on: Jul 28, 2018

About 78 of the air is composed of
a)carbon dioxide.
b)oxygen.
c)nitrogen.
d)argon.

Question 2

A 2.5-kg object suspended from the ceiling by a string that has a length of 2.5 m is released from rest with the string 40 below the horizontal position. What is the tension in the string at the instant when the object passes through its lowest position?
a. 11 N
b. 25 N
c. 42 N
d. 18 N
e. 32 N

janeli

Sr. Member
Posts: 346

Reply #1 on: Jul 28, 2018

Answer to Question 1

c

Answer to Question 2

c

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