Answer:
20.6 m
Explanation:
P₁ = Power of first bulb = 45 W
P₂ = Power of second bulb = 130 W
r₁ = distance from the first bulb
r₂ = distance from the second bulb = 35 m
Using the equation
Inserting the values
r₁ = 20.6 m
Explanation:
(a). First of all, we calculate the number of atoms per cm^{3}, and by taking into account that each atom contributes with one free electron we have
(b)
(c)
I hope this is useful for you
P.D please change 1.628 (the diameter) by 0.814(the radius) in the calculation
:)
The backpack has been lifted for 0.58 m
Explanation:
The work done in lifting an object is equal to the gain in gravitational potential energy of the object:
where
(mg) is the weight of the object, with
m being the mass
g being the acceleration due to gravity
is the change in height of the object
In this problem,
W = 110 J is the work done
mg = 190 N is the weight of the backpack
Solving for , we find the change in height of the backpack:
Learn more about work:
brainly.com/question/6763771
brainly.com/question/6443626
#LearnwithBrainly
As electrons move through the conductor, some collide with atoms, other electrons, or impurities in the metal. It is these collisions that cause resistance. The molecular makeup of a substance determines the number of collisions, or amount of resistance, to electron flow.
M1 descending
−m1g + T = m1a
m2 ascending
m2g − T = m2a
this gives :
(m2 − m1)g = (m1 + m2)a
a =
(m2 − m1)g/m1 + m2
= (5.60 − 2)/(2 + 5.60) x 9.81
= = 4.65m/s^2