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
serg [7]
3 years ago
9

3. The figure below show a bar of negligible weight pivot at point A attached to the

Physics
1 answer:
Mice21 [21]3 years ago
8 0
Hey so the answer is F2=7
W30
You might be interested in
The amount of charge flowing through a particular point in a conductor is represented by the equation Q = at^3 + bt + c, where a
stira [4]

Explanation:

Below is an attachment containing the solution.

3 0
4 years ago
A student calculates the density of a copper cube to be 4.15 g/cm . If the accepted value is 8.64 g/cm the percentage error in h
Helen [10]

 The percentage error in his experimental value is -51.97%.

<h3>What is percentage error?</h3>

This is the ratio of the error to the actual measurement, expressed in percentage.

To calculate the percentage error of the student, we use the formula below.

Formula:

  • Error(%) = (calculated value-accepted value)100/(accepted............. Equation 1

From the question,

Given:

  • Calculated value = 4.15 g/cm
  • accepted value = 8.64 g/cm

Substitute these values into equation 1

  • Error(%) = (4.15-8.64)100/8.64
  • Error(%) = -4.49(100)/8.64
  • Error(%) = -449/8.64
  • Error(%) = -51.97 %

 

Hence, The percentage error in his experimental value is -51.97%.

Learn more percentage error here: brainly.com/question/5493941

8 0
3 years ago
What speed should a satellite with a mass of 1500 kg at 8,500 km above the center of the earth be traveling at in order to stay
hodyreva [135]

Answer:

6844.5 m/s.

Explanation:

To get the speed of the satellite, the centripetal force on it must be enough to change its direction. This therefore means that the centripetal force must be equal to the gravitational force.

Formula for centripetal force is;

F_c = mv²/r

Formula for gravitational force is:

F_g = GmM/r²

Thus;

mv²/r = GmM/r²

m is the mass of the satellite and M is mass of the earth.

Making v the subject, we have;

v = √(GM/r)

We are given;

G = 6.67 × 10^(-11) m/kg²

M = 5.97 × 10^(24) kg

r = 8500 km = 8500000

Thus;

v = √((6.67 × 10^(-11) × (5.97 × 10^(24)) /8500000) = 6844.5 m/s.

7 0
3 years ago
Read 2 more answers
A(n)<br> reverses the flow of current through an electric motor.
Andrews [41]

Answer:

Commutator reverses the flow of current through an electric motor

Explanation:

4 0
4 years ago
Read 2 more answers
Select the correct answer.
S_A_V [24]
The answer is figure A
7 0
3 years ago
Read 2 more answers
Other questions:
  • What happens if u slow water molecules down
    10·1 answer
  • Compared to gamma rays, X-rays have relatively
    10·1 answer
  • I WILL MAKE YOU BRAINLIEST! PLEASE PROVIDE PROOF FROM K12. ASAPHURRY IS ALWAYS WELCOME TO ANSWER MY QUESTIONS SHE IS THE BEST. t
    7·1 answer
  • 3. Pencils should not be used inside the computer to change the setting of switches or to
    5·1 answer
  • Please help!
    7·1 answer
  • Two cars move at different velocities. Car A moves at a speed of 90 km/hr while Car B moves
    11·1 answer
  • The density of a glass is 2.5 g/cm3. if the glass breaks, what is the density of the smaller pieces​
    10·1 answer
  • Question 8 of 15
    7·2 answers
  • Choose the answer to fill in the blank, which best completes the sentence.
    14·2 answers
  • All of the following are contributions of the Space Center for Florida except which one?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!