Answer:
480
Explanation:
resistance equals to potential difference divide by electric current
120÷0.25
=480
Answer:
Explanation:
= Vacuum permittivity = 
= Area = 
= Distance between plates = 1 mm
= Changed voltage = 60 V
= Initial voltage = 100 V
= Resistance = 
Capacitance is given by
We have the relation
The time taken for the potential difference to reach the required level is .
The coefficient of static friction between the puck and the surface.
In fact, that coefficient describes exactly how "hard" it is to cause the puck to start moving, if it starts from an idle condition.
Answer:
convection
Explanation:
The only way convection can only take place in liquids and gas.Since the marshmello is neither,convection is the least effective way
This one is a piece 'o cake if you know the definition
of a horsepower, and impossible if you don't.
It is: 1 horsepower = 746 watts
Also, remember that 1 watt = 1 joule/second
Now: Work = (force) x (distance)
To move this box 2 meters,
Work = (1,492 newtons) x (2 meters) = 2,984 joules
If you accomplished that feat in 1 second,
then you produced power of
(2,984 / 1) (joule/second) = 2,984 watts .
(2,984 watt) x (1 HP / 746 watt) = 4 horsepower .
That's the solution, applying bullet-proof math and physics to the
given data. But in the real world, I guarantee that you didn't do that.
______________________________________
By the way ... a comment regarding the terminology in the question:
The box doesn't "have a force" of 1,492 newtons. That's the force
with which you ... or a horse, or an ox ... pushed against the box
in order to move it.
(And, if I might observe, that force is about 336 pounds,
so my money would be on the horse or the ox.)
