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Nat2105 [25]
3 years ago
5

A battery consists of five dry cells connected in series. If the voltage developed by each cell is 1.5 V, the total voltage deve

loped by the battery is
a. 7.5 V.
b. 1.5 V.
c. 5.0 V.
d. 0.3 V.the total voltage developed by the battery is
a. 7.5
Physics
2 answers:
Kitty [74]3 years ago
8 0
In series voltage of indivisual cells is added
so 1.5*5=7.5
quester [9]3 years ago
4 0

Answer:

The answer is A

Explanation:

1.5 * 5

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A person hits a 45-g golf ball. The ball comes down on a tree root and bounces
Verizon [17]

Answer:

Maximum height, h = 10 m          

Explanation:

It is given that,

Mass of golf ball, m = 45 g = 0.045 kg

The ball comes down on a tree root and bounces  straight up with an initial speed of 14.0 m/s.

We need to find the height the ball will rise  after the bounce. It is based on the conservation of energy such that,

\dfrac{1}{2}mv^2=mgh

h is maximum height raised by the ball

h=\dfrac{v^2}{2g}\\\\h=\dfrac{(14)^2}{2\times 9.8}\\\\h=10\ m

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5 0
3 years ago
A system dissipates 12 J of heat into the surroundings; meanwhile, 28 J of work is done on the system. What is the change of the
Stels [109]

Answer:

+16 J

Explanation:

We can solve the problem by using the 1st law of thermodynamics:

\Delta U = Q-W

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\Delta U is the change of the internal energy of the system

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W is the work done (positive if done by the system, negative if done by the surroundings on the system)

In this case we have:

Q = -12 J is the heat dissipated by the system

W = -28 J is the work done ON the system

Substituting into the equation, we find the change in internal energy of the system:

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3 0
3 years ago
Who else has 3 20s hmmmmmmm
hichkok12 [17]

dollar bills if so def. not me but grades 4

3 0
2 years ago
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Irina18 [472]

Answer:

A. Always true

Explanation:

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3 years ago
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Hakeem has two objects that are different temperatures. The beginning temperature of object A is 10°C. The beginning temperature
devlian [24]
None of the diagrams you attached shows the scenario accurately,
or at all.

Heat flows from Object-B to Object-A, until both objects are at
the same temperature, somewhere between 10°C  and  29°C.
6 0
3 years ago
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