what is the net force if you push a cart to the right with 5N of force and a friend pushes the cart to the left with 5N of force

Answers

Answer 1
Answer: The net force will be zero. Since the forces are in opposite direction and equal amount, they will cancel out. 

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A particle moves in a straight line with constant speed of 4 m/s for 2 s, then with 6 m/s for 3 s. The average speed of the particle in the given time interval be v. Find [v].(where, [ ] is step integer function)

Answers

Answer:

Explanation

Total time, T=2+3=5 s

Total distance, D=4×2+6×3=26 m

Thus, average speed=D/T=26/5=5.2

Thus, [x]=5

As we move through the visible spectrum, red to violet (right to left in the image), the wavelength __________ and the frequency ____________.A) increases; decreases

B) increases; increases

C) decreases; increases

D) decreases; decreases

Answers

Answer;

C) decreases; increases

Explanation;

  • As we move through the visible spectrum, red to violet (right to left in the image), the wavelength decreases and the frequency increases.
  • Electromagnetic spectrum comprises of electromagnetic waves arranged in the order of increasing or decreasing frequency and wavelength.
  • These electromagnetic waves includes; radio waves, microwaves, infrared, visible light, ultraviolet, x-rays and gamma rays.
  • In electromagnetic spectrum as you move from left to right, that is from the radio waves towards the gamma rays, the wavelength decreases as the frequency increases; while from gamma rays towards the radio waves the wavelength increases while the frequency decreases.
As we move through the visible spectrum, red to violet (right to left in the image), the wavelength decreases and the frequency increases. The correct option among all the options that are given in the question is the third option or option "C". I hope this answer helps you and you will understand the solution also. 

Who was the first person to discover wormholes?

Answers

The first who discovered The Einstein Roses bridge it was discovered by Ludwig flamm in 1916 a few months after Schwarzschild published his solution and was rediscovered by Albert Einstein and his colleague Nathan Rosen which was published then in 1935

as stated in the other ans, wormhole or its scientific name, Einstein–Rosen bridge, was discovered by Ludwig Flamm in 1916. But note that Flamm's discovery was through a general relativity solution on black hole dimension by Schwarzschild. Both Schwarzschild's solution and Flamm's discovery are purely mathematical - no wormhole in reality has been found so far.


What color do you think an object would be if it reflected all colors of the visible spectrum? A.The object would be black.


B.The object would be yellow.


C.The object would be white.


D.The object would be blue.

Answers

c) The object would be WHITE.

We call "white light" to the sunlight, but referred to the visible part of spectrum. If the object reflects all the light, it appears as a white object.

What is the potential energy of a 30 Newton ball that is on the ground

Answers

The potential energy of a 30N ball on the ground will be zero. With respect to height, h. Potential energy will be calculated like this. P=mgh. So if its on the ground relatively speaking the h=0. Thus inputting into the above formula. P=0.

An electric wire in the wall of a building carries a dc current of 25 a vertically upward. what is the magnetic field due to this current at a point 10 cm due northof the wire

Answers

Answer:

5.0 x 10-5 T

Explanation: