1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Taya2010 [7]
3 years ago
15

HELP ME PLEASE!!!!!! A couch is pushed with a force of 79 N and moves a distance of 7 m across the floor. How much work was done

in moving the couch?
Physics
1 answer:
Korolek [52]3 years ago
3 0
Work is the applied force (79n) x distance (7m)

So the answer is 553 joules
You might be interested in
The energy of the electron in Hydrogen atom can be shown to be given by En = -13.6/n^2 eV, where n represents the principal quan
Tpy6a [65]

Answer:

This represents radiation in ultra-violet region .

Explanation:

Energy of the orbit where n = 3 is given as follows

E_3 =- \frac{13.6 }{3^2}

E_3 =- \frac{13.6 }{9} = -1.511 eV

Energy of the orbit where n = 1 is given as follows

E_1 =- \frac{13.6 }{1^2}

E_1 =- \frac{13.6 }{1} = 13.6 eV

Difference of [tex]E_3 and [tex]E_1 = - 1.511+ 13.6

= 12.089 eV.

The wavelength of light having this energy in nm is given by the expression as follows

Wavelength in nm = 1244 / energy in eV

= 1244 / 12.089

= 102.90 nm

This represents radiation in ultra-violet region .

8 0
3 years ago
How is Venus similar to Earth?
hoa [83]

Answer: D

Explanation: I have my answers VS. Go0gle answers (go0gle answers are pics)

(A) Both have the same day length. Well, Venus doesn't havve the same amount of days. (I already know off the top of my head, but I still searched it up)

(B) Both rotate in the same direction. In school (before Virus) they would always show diagrams of the planets on the projector and Venus doesn't rotate

(C) Both have ample water. No. Venus doesn't have much water >_>

(D) Both have a solid inner core and a liquid outer core. Yesh. In my lessons (before), Venus has a solid inner core and liquid outer core.

5 0
3 years ago
Read 2 more answers
A piece of solid copper, at 10oC, is dropped into a graduated cylinder of 100°C water. Which statement BEST describes the change
enot [183]

Answer:

D

Explanation:

just took the test

6 0
3 years ago
Read 2 more answers
How do you calculate the volume and density of something that weighs 20 grams?
Nostrana [21]
Mass divided by volume is density, while mass times density is volume. you cannot calculate density without volume and you cannot calculate volume without density.
i believe that's the answer.
oh gosh i didn't realize my middle school education involved high school stuff.
6 0
3 years ago
Which one of the statements below is true about mechanical waves?
TEA [102]
They require a medium to travel through
5 0
2 years ago
Other questions:
  • Subduction occurs as a result of:__________
    7·1 answer
  • If a bicyclist has a mass of 70 KG and a velocity of 25M/S, what is the momentum of the bicyclist?
    5·1 answer
  • When can a truck have less momentum than a bike? A. only when the truck is not moving B. only when it's moving faster than the b
    11·1 answer
  • Susie (45kg) and Troy (65 kg) are sitting 2 meters apart. They smile at each other. What is the gravitational force between them
    6·1 answer
  • Solve the current and voltage problems for the ci
    6·2 answers
  • A lamina occupies the part of the disk x2 + y2 ≤ 49 in the first quadrant. Find the center of mass of the lamina if the density
    5·1 answer
  • At what speed does a 1800 kg compact car have the same kinetic energy as a 15000 kg truck going 21 km/h ? Express your answer in
    9·1 answer
  • . What is the atomic number for calcium?
    11·1 answer
  • According to the chart which type of electromagnetic wave has a longest wavelength?
    6·1 answer
  • 9. What is the volume of an object that has a mass of 15.0 grams and a density of 1.4 g/mL?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!