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 90 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

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.