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
Elden [556K]
3 years ago
15

You exert a force of 75 newtons on a rock. You push and you push, but you can’t budge it. You are exhausted! How much work did y

ou perform?
Physics
1 answer:
dalvyx [7]3 years ago
4 0

Answer:   Work W = 0

Explanation: Work W = F·s. Because rock does not move, s = 0 and

work done is zero.

You might be interested in
The 6th harmonic of a pipe is open at both ends has a frequency of 732 Hz, on a day when the temperature is 10 degrees Celsius.
Stels [109]

Answer:

안녕하세요 우리는 어떻게 응을 하루?

Explanation:

이봐 우리는 오늘 응

4 0
3 years ago
A spaceship travels toward the Earth at a speed of 0.97c. The occupants of the ship are standing with their torsos parallel to t
Ket [755]

Answer:

Explanation:

We shall apply length contraction einstein's relativistic formula to calculate the length observed by observer on the earth . For the observer , increased length will be observed for an observer on the earth

L=\frac{.5}{\sqrt{1-(\frac{.97c}{c})^2 } }

L=\frac{.5}{.24}

L= 2.05

The length will appear to be 2.05 m . and width will appear to be .5 m  to the observer on the spaceship. . It is so because it is length which is moving parallel to the direction of travel. Width will remain unchanged.  

3 0
4 years ago
Please HELP ME If the motion of an object changes, what must be true about the forces acting on that object?
atroni [7]

Answer:

If there is a net force acting on an object, the object will have an acceleration and the object's velocity will change. ... Newton's second law states that for a particular force, the acceleration of an object is proportional to the net force and inversely proportional to the mass of the object.

Explanation:

4 0
3 years ago
Read 2 more answers
The colored lines in the figure represent paths taken by different people walking around in a city. Assume that each city block
jarptica [38.1K]

Answer: 592.37m

Explanation:

Person D is the blue line.

The total displacement is equal to the difference between the final position and the initial position, if the initial position is (0,0) we have that he first goes down two blocks, then right 6 blocks. then up 4 blocks, then left 1 block.

Now i will considerate that the positive x-axis is to the right and the positive y-axis is upwards.

Then the new position will be, if B is a block:

P =(6*B - 1*B, -2*B + 4*B) = (5*B, 2*B)

And we know that B = 110m

P = (550m, 220m)

Now, then the displacement will be equal to the magnitude of our vector, (because the difference between P and the initial position is equal to P, as the initial position is (0,0))  this is:

P = √(550^2 + 220^2) = 592.37m

4 0
4 years ago
What metal has 28 electrons?
Alja [10]
Nickel has a happy amount of 28 electrons.
8 0
4 years ago
Read 2 more answers
Other questions:
  • As light shines from air to another medium, i = 30.0o, the light bends toward the normal and refracts at 22.0o. What is the inde
    5·2 answers
  • The total amount of electrical energy used by a
    5·2 answers
  • A car has a mass of 1500. It is traveling north a 8 m/s. What is the cars momentum
    8·1 answer
  • A research Van de Graaff generator has a 2.10 m diameter metal sphere with a charge of 40.0 C on it. (a) What is the potential (
    6·1 answer
  • A vertical scale on a spring balance reads from 0 to 200 \rm{N}. The scale has a length of 10.0 \rm{cm} from the 0 to 200 \rm{N}
    10·1 answer
  • Which statement is true about the energy of electromagnetic radiation? A.the frequency of the emmited radiation is inversely pro
    13·2 answers
  • Is brainly working for you guys?
    11·2 answers
  • TTC
    8·1 answer
  • Which statement describes the difference between metallic bonds and Van der Waals forces
    6·1 answer
  • A gas at constant temperature is confined to a cylinder with a movable piston. The piston is slowly pushed into the cylinder, de
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!