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
lina2011 [118]
3 years ago
6

Suppose a rock is hoisted up with a rope. The rock experiences 10 N of tension force upward and 10 N of gravitational force down

ward. The total net force on the rock is 20 N. True False
Physics
2 answers:
nika2105 [10]3 years ago
5 0
False. Since the forces are pulling in equal and opposite directions, the net force is 0.
LiRa [457]3 years ago
5 0

10N of tension upwards is <em>positive</em>

10N of gravitational Force downwards is <em>negative</em>

Net Force = The sum of all forces

F_{net} = F_{tension} + F_{gravity}

F_{net} = 10N + (-10N) = 0


So the answer is false.

Extra Info: If the net force was 20N there would be a tensional force of 30N moving the rock upwards.

30N - 10N = 20N

You might be interested in
Hunter works to fix wires and paneling. Hunter is a(n)
Serjik [45]

Answer:

Hunter is a electrician

7 0
3 years ago
Read 2 more answers
The suspension cable of a 1,000 kg elevator snaps, sending the elevator moving downward through its shaft. The emergency brakes
tester [92]

Answer:

option (E) 1,000,000 J

Explanation:

Given:

Mass of the suspension cable, m = 1,000 kg

Distance, h = 100 m

Now,

from the work energy theorem

Work done by the gravity = Work done by brake

or

mgh = Work done by brake

where, g is the acceleration due to the gravity = 10 m/s²

or

Work done by brake  = 1000 × 10 × 100

or

Work done by brake = 1,000,000 J

this work done is the release of heat in the brakes

Hence, the correct answer is option (E) 1,000,000 J

4 0
3 years ago
Which method do acoustic use to limit reverberations in music halls
dalvyx [7]

Answer:

reverberation time appropriate to the use and size of the room, adequate balance between direct and reverberant sound, intimacy and good sound diffusion in the room to obtain a uniform sound.

Explanation:The process of ... second method measured the speed of sound propagation by the phase shift.

8 0
3 years ago
Which cannot be separated into simpler substances?
marin [14]

Answer:

An element is a pure substance that cannot be separated into simpler substances by chemical or physical means. There are about 117 elements.

Explanation:

6 0
3 years ago
Read 2 more answers
From Smallest to Largest <br> Moon<br> asteroid <br> meteorite <br> meteoroid
Yanka [14]
Meteorite meteoroid asteroid moon give brainlest please
7 0
3 years ago
Read 2 more answers
Other questions:
  • A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound
    9·1 answer
  • Which of the following is not an intensive physical property?
    12·2 answers
  • A box is being pulled to the right. What is the direction of the gravitational force?
    15·1 answer
  • Liam throws a water balloon horizontally at 8.2 m/s out of a window 18 m from the ground.
    5·1 answer
  • What are Radio/Tv waves?
    5·1 answer
  • Plate tectonics is the scientific theory explaining the movement of the earths crust. The movement of these tectonic plates is l
    5·1 answer
  • A crate resting on a rough horizontal floor is to be moved horizontally. The coefficient of static friction is 0.36. To start th
    12·1 answer
  • 7. A force of 100 N acting on a body gives it a speed of 200 m/s in 2
    10·2 answers
  • A printer has a power of 100 W. It takes 30 seconds to print out a document. How much energy will it
    11·2 answers
  • Solve the following numerical problems​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!