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7nadin3 [17]
3 years ago
15

which of the following describes the principle of conversation of charge? a.charge is created b. a charge can be transferred c.

charge cannot be created or destroyed,just transferred d.charge can be destroyed
Physics
1 answer:
victus00 [196]3 years ago
7 0
B) in Physics, charge conservation is the principle that the total electric charge in an isolated system never changes. The net quantity of electrical charge, the amount of positive charge minus the amount of negative charge in the universe is always conserved.
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Part A
inn [45]

Answer:in 1905

Explanation:

6 0
2 years ago
A 5000-kg freight car crashes into a 10,000-kg freight car at rest. They couple upon collision and move with a speed of 2 m/s. W
nirvana33 [79]

Answer:

6 m/s

Explanation:

mass of moving car m1=5000 kg

initial velocity of moving car vi1=?

mass of car at rest = m2=10000 kg

initial velocity of car at rest = vi2=0

final velcoities of both cars after collision = vf1=vf2= 2m/s

using conservation of momentum rule

m1vi1+m2vi2=m1vf1+m2vf2

putting values

==> 5000 × vi1 + 1000 × 0 = 5000 × 2 + 10000 × 2

==> 5000 ×vi1 = 2 × 15000

==> vi1 = 2 × 15000 ÷ 5000

==> vi1= 2×3=6 m/s

8 0
3 years ago
(a) You wish to determine the height of the smokestack of a local coal burning power plant. You convince a member of the mainten
kicyunya [14]

Answer:

a. 86.80 m

b. i. The mass of the bob

ii. The length of the pendulum

Explanation:

a. Determine the height of the smokestack.

Using T = 2π√(L/g) where T = period of pendulum = 18.7 s, L = length of pendulum = height of smokestack and g = acceleration due to gravity = 9.8 m/s².

So, making L subject of the formula, we have

T = 2π√(L/g)

T/2π = √(L/g)

squaring both sides, we have

(T/2π)² = L/g

L = (T/2π)²g

Substituting the values of the variables into the equation, we have

L = (T/2π)²g

L = (18.7 s/2π)²(9.8 m/s²)

L = (2.976 s)²(9.8 m/s²)

L = 8.857 s² × 9.8 m/s²

L = 86.796 m

L ≅ 86.80 m

b. What factors influence the period of a simple pendulum

The factors that influence the period of a simple pendulum are

i. The mass of the bob

ii. The length of the pendulum

5 0
2 years ago
The potential energy of an object is 16.0 joules. The object is 145cm high.
coldgirl [10]

Answer:

I don't know but you got this!!

8 0
2 years ago
O((>ω< ))oo((>ω< ))oo((>ω< ))oo((>ω< ))oo((>ω< ))o
Paladinen [302]

Answer:

(•_•)

Explanation:

7 0
2 years ago
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