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Rzqust [24]
3 years ago
12

True or false? Charges flow from high voltage to low voltage

Physics
1 answer:
luda_lava [24]3 years ago
6 0
Answer - true
Explanation-
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A merry-go-round is spinning at a rate of 4.04.0 revolutions per minute. Cora is sitting 0.50.5 m from the center of the merry-g
dsp73

Answer:

angular speed of both the children will be same

Explanation:

Rate of revolution of the merry go round is given as

f = 4.04 rev/min

so here we have

f = \frac{4.04}{60} =0.067 rev/s

here we know that angular frequency is given as

\omega = 2\pi f

\omega = 2\pi(0.067)

\omega = 0.42 rad/s

now this is the angular speed of the disc and this speed will remain same for all points lying on the disc

Angular speed do not depends on the distance from the center but it will be same for all positions of the disc

7 0
3 years ago
A proton moves from a location where V = 87 V to a spot where V = -40 V. (a) What is the change in the proton's kinetic energy?
Art [367]

Answer: a) 127 eV; b) there is no change of kinetic energy.

Explanation: In order to explain this problem we have to use the change of potentail energy ( conservative field) is equal to changes in kinetic energy. So for the proton ther move to lower potential then they gain kinetic energy from the electric field.  This means the electric force do work in this trayectory and then the protons increased changes its speed.

If we replace the proton by a electron we have a very different situaction, the electrons are located in a lower potental then  they can not move to higher potential  if any  external force does work on the system.

In resumem, the electrons do not move from a point with V=87 to other point with V=-40 V. The electric force point to high potential so the electrons  can not move to lower potential region (V=-40V).

6 0
3 years ago
What is an accurate definition of a heat engine? A. a system that converts mechanical energy into thermal energy B. a system tha
Verizon [17]

Answer:

C

Explanation:

C. a system that converts thermal energy into other useful forms of energy

5 0
3 years ago
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A motorcycle is stopped at a stop light. When the light turns green it
ss7ja [257]

Answer: 18.9 m

Explanation:

i did the kinematic equation & found the answer.

8 0
3 years ago
Unlike mechanical waves such as sound or earthquake waves, EM waves can travel through empty space. True or false
Alex777 [14]

Answer:

its true

Explanation:

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3 years ago
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