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
Igoryamba
3 years ago
10

Which force can either repel or attract objects?

Physics
2 answers:
stellarik [79]3 years ago
7 0

Answer:

D. electromagnetic forces

Explanation:

Irina18 [472]3 years ago
5 0
Answer is D
Hope this helped :)
Brainliest plzz
You might be interested in
A single slit of width 0.3 mm is illuminated by a mercury light of wavelength 254 nm. Find the intensity at an 11° angle to the
MArishka [77]

Answer:

The  the intensity at an 11° angle to the axis in terms of the intensity of the central maximum is  

   I_c = \frac{I}{I_o}  =8.48 *10^{-8}

Explanation:

From the question we are told that

   The  width of the slit is  D  =  0.3 \ mm =  0.3 *10^{-3} \ m

    The  wavelength is  \lambda =  254 \ nm =  254 *10^{-9} \ m

     The angle is  \theta  =  11^o

The intensity of at 11^o to the axis in terms of the intensity of the central maximum. is mathematically represented as

        I_c = \frac{I}{I_o}  = [ \frac{sin \beta  }{\beta }] ^2

Where \beta is mathematically represented as

        \beta  =  \frac{D sin (\theta ) *  \pi}{\lambda }

substituting values

      \beta  =  \frac{0.3 *10^{-3} sin (11 ) * 3.142}{254 *10^{-9} }

     \beta  =  708.1 \ rad

So

  I_c = \frac{I}{I_o}  = [ \frac{sin (708.1)  }{(708.1)}] ^2

   I_c = \frac{I}{I_o}  =8.48 *10^{-8}

6 0
4 years ago
If the particle is located slightly to the left of point B, its acceleration is __________.
Igoryamba

(1) directed to the right

Explanation:

To the right of B, u(x) is a decreasing function & so its derivative is negative,this implies that the x component of the force on a particle at this position is positive,or that the force is directed towards right .Small deviations from equilibrium at point B causes a force to accelerate the particle away ,hence particle is in <u>unstable equilibrium.</u>

7 0
4 years ago
1. Newton's 3rd Law states...
Vika [28.1K]

Answer:

C

Explanation:

There's a reason newton's 3rd law is called action-reaction :D

A - 1st law/inertia

B - 2nd law/f=ma

5 0
3 years ago
If a plane ✈️ traveled west for 4.0 hours and covered a distance of 4,400 kilometers what is the velocity??
Vlad [161]

The average velocity for those 4 hours was <em>1,100 km/hour west</em>.

3 0
3 years ago
A train is moving along a track with constant speed v1 relative to the ground. A person on the train holds a ball of mass m and
scoundrel [369]

Answer:

(a)0.5m(2v1v2+v2^{2})\\(b)0.5m(v2^{2}-v1^{2})\\(c)0.5m(2v1v2+v2^{2})\\(d)0.5m(v2^{2}-v1^{2})

Explanation:

velocity of ball in train reference = v2

velocity of ball in earth reference = v1+v2

(a)

Kinetic energy is given by 0.5mv^{2} where m and v are the mass and velocity of object respectively.

Change in kinetic energy is given by subtracting initial kinetic energy from the final kinetic energy. In this case

Initial kinetic energy= 0.5mv1^{2}

Final kinetic energy= 0.5m (v1+v2)^{2}=0.5m(v1^{2}+2v1v2+v2^{2})

Change in kinetic energy=0.5m (v1+v2)^{2}-0.5mv1^{2}=0.5m((v1+v2)^{2})-v1^{2}=0.5m(2v1v2+v2^{2}

(b)

Change in velocity in train reference will be

Initial kinetic energy= 0.5mv1^{2}

Final kinetic energy= 0.5mv2^{2}

Change in kinetic energy=0.5m(v2^{2}-v1^{2})

(c)

Work done, W = change in kinetic energy=0.5m (v1+v2)^{2}-0.5mv1^{2}=0.5m((v1+v2)^{2})-v1^{2}=0.5m(2v1v2+v2^{2}

(d)

Work done, W = change in kinetic energy=0.5m(v2^{2}-v1^{2})

4 0
3 years ago
Other questions:
  • A variable force of 4xâ2 pounds moves an object along a straight line when it is x feet from the origin. calculate the work done
    8·1 answer
  • How do you express 78,000 in scientific notation?
    11·1 answer
  • Two bran muffins are sitting on a table at room temperature.
    13·1 answer
  • During the process of _____, two rails or sides break apart and attract new nucleotide bases to form a new and complete strand.
    11·1 answer
  • What’s the acceleration if the average velocity is 3.5 and the time is 8.7
    11·1 answer
  • Interrelationship between health population and environment education and Science and Technology​
    14·1 answer
  • The motion of a piston in an auto engine is simple harmonic. If the piston travels back and forth over a distance of 10 cm and t
    12·1 answer
  • How does The centripetal fotce change if the car has less Mass?​
    12·1 answer
  • Two dump trucks each have a mass of 1,500 kg. The distance of the dump truck
    6·1 answer
  • This property of matter describes<br> the relationship of mass to volume?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!