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
siniylev [52]
2 years ago
15

Polly is pushing a box across the floor with a force of 30 N. The force of gravity is -8 in, and the normal force is eight in. W

hich value could describe the force of friction and Polly could not move the box
Physics
2 answers:
qaws [65]2 years ago
6 0

Answer:

-30 N....(A)

Explanation:

hope this helps, the person above me is also correct

aleksandr82 [10.1K]2 years ago
5 0

Answer:

A. -30 N

Explanation:

not sure but if the box isn't moving then the force opposite of Polly would be equal to the force she's exerting.

You might be interested in
A teacher discusses a scientific theory that has been in place for almost a century. which would present the greatest challenge
Umnica [9.8K]

Answer: The theory might have become Obsolete or Superseded

Explanation:

A theory becomes obsolete or superseded if it becomes inadequate, false or incomplete in how its describes reality. It does not matter if it was once accepted. There are some theories such as Lysenkoism that are currently described as being obsolete because it does not conform to current reality. Another example of a theory that was superseded is the phlogiston theory. It was replaced a different theory of energy.

3 0
3 years ago
Read 2 more answers
If a football player collides with a goal post, what forces are at work?
AlekseyPX
When a footballer collides with the goal post, the forces at work are the action and reaction forces. The player will exert an action force on the goal post, and then a reaction force from the goal post will stop the player. The reaction force call will cause pain and even injury to the player.
7 0
2 years ago
A car is moving at 76 miles per hour. the kinetic energy of that car is 5 × 105 j. how much energy does the same car have when i
valentina_108 [34]
Its would be 144. cause if u think about it
3 0
3 years ago
11 e) Can a conductor be given limitless charge? Obtain the equivalent resistance of several resistors if (a) they are in series
horsena [70]

Answer:

(e) no

(a) Rs = R' + R'' + R'''

(b) 1/Rp = 1/R' + 1/R'' + 1/R'''

Explanation:

11 e)

Practically it is not possible to give limitless charge to a conductor. It depends to the number of valence electrons.

(a) When the three resistances R'. R'' and R''' is in series combination.

Let they are connected to the voltage V and the current in each resistance is I.

According to Ohm's law

Voltage across R', V' = I R'

Voltage across R'', V'' = I R''

Voltage across R''', V''' = I R'''

So, let the equivalent resistance is Rs.

I Rs = I R' + I R'' + I R'''

Rs = R' + R'' + R'''

(b)

When the three resistances R'. R'' and R''' is in parallel combination.

Let they are connected to the voltage V and the current in each resistance is I', I''. I'''.

Current in R', I' = V/R'

Current in R'', I'' = V/R''

Current in R''', I''' = V/R'''

The equivalent resistance is Rp.

V/Rp = V/R' + V/ R'' + V/R'''

1/Rp = 1/R' + 1/R'' + 1/R'''

6 0
3 years ago
50 points please answer ASAP
Sergeeva-Olga [200]

The seat belt is applying a force in the opposite direction.

3 0
2 years ago
Other questions:
  • Fitness can be achieved only through
    11·2 answers
  • Determine your Maximum Heart Rate (MHR) by subtracting your age from 220.
    15·1 answer
  • 21. The speed of light is approximately 3.00 x 108 m/s. What is the speed of light in miles per hr?
    13·1 answer
  • What does Kinetic Energy depend on
    8·1 answer
  • students make a small elevator machine with 5 kg and 10 kg masses on either side how fast will the masses accelerate once they a
    8·1 answer
  • An astronaut has left the International Space Station to test a new space scooter. Her partner measures the following velocity c
    15·1 answer
  • When you whirl a small rubber stopper on a cord in a vertical circle, you find a critical speed at the top for which the tension
    12·1 answer
  • What is the acceleration of a 10kg mass pushed by a 5N force?​
    10·1 answer
  • Difference between rest and motion?
    13·1 answer
  • 19. A stone has a mass of 390 g and a density of 2.7 g/cm3.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!