What do objects in space that are moving at a constant velocity in a straight line do?

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS AND I NEED ALL CORRECT ANSWERS ONLY!!!

horsena [70]

C.electron

because only electron spin or work around the Nucleas

4 0

3 years ago

An ion source is producing 6Li ions, which have charge +e and mass 9.99 × 10-27 kg. The ions are accelerated by a potential diff

Mkey [24]

Answer:

$5.38\cdot 10^5 V/m$

Explanation:

At first, the 6Li ions are accelerated by the potential difference, so their gain in kinetic energy is equal to the change in electric potential energy; so we can write:

$q\Delta V=\frac{1}{2}mv^2$

where

$q=+e=+1.6\cdot 10^{-19}C$ is the charge of one 6Li ion

$\Delta V=9.2 kV=9200 V$ is the potential difference through which they are accelerated

$m=9.99\cdot 10^{-27}kg$ is the mass of each ion

v is the final speed reached by the ions

Solving for v, we find:

$v=\sqrt{\frac{2q\Delta V}{m}}=\sqrt{\frac{2(1.6\cdot 10^{-19})(9200)}{9.99\cdot 10^{-27}}}=5.43\cdot 10^5 m/s$

After that, the ions pass into a region with a uniform magnetic field of strength

$B=0.99 T$

The magnetic field exerts a force perpendicular to the direction of motion of the ions, and this force is given by

$F=qvB$

In order to make the ions passing through undeflected, there should be an electric force balancing this magnetic force. The electric force is given by

$F=qE$

where E is the strength of the electric field.

Since the two forces must be balanced,

$qE=qvB$

From which we get

$E=vB$

So the strength of the electric field must be

$E=(5.43\cdot 10^5)(0.99)=5.38\cdot 10^5 V/m$

4 0

3 years ago

Which of the following has kinetic energy?

JulsSmile [24]

Kinetic energy is energy of motion. Anything that's moving has it.
Anything that's not moving doesn't have it.

The only thing on this list of choices that's moving is the gymnast
doing a cartwheel. The swimmer, the basketball player, and the
horse are all just sitting or standing there.

8 0

3 years ago

1. Acceleration can result from a change of _______, or a change in ___________, or both *

Klio2033 [76]

Answer:

not sure

Explanation:

jahhhhhsjjjjdddddhdhdj hbdbd#dialectical DHL I have no clue W Bush administration and I don't have any jshshhhhdgggddddddd the entire community was literate because

a. they had been slaves and had not been to school