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wlad13 [49]
3 years ago
14

A circuit contains a 1.5v battery and a bulb with a 3 ohms resistance, calculate the current of the circuit

Physics
1 answer:
Cerrena [4.2K]3 years ago
5 0

Answer:

0.5A

Explanation:

V=IR where V is 1.5V, R is 3 ohms

Hence 1. 5= I x 3

1.5/3 =I

I =0.5 A

Current is 0. 5 amperes

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Two circular loop soft wires, each containing a single turn, have the same radius of 4.0 cm and a common center. The lanes of th
zysi [14]

Answer:

1

Explanation:

6 0
3 years ago
susan and joe push a table 18 meters down a hall by exerting a force of 200 newtons (n). what is the total amount of work done o
prisoha [69]

Answer:

3600joules

Explanation:

formula :W=FS

W=work done (J)

F=force (N)

S=displacement moved in the direction of force (m)

200N×18m

=3600J

3 0
2 years ago
A Keystone Pipeline has a diameter of 36 inches and a design flow rate of 590,000 barrels per day of crude oil at 40ºC. Estimate
Sav [38]

Answer:

Power = 606.83 hp/mile

Explanation:

Given data:

diameter of pipeline is 36 inches = 3ft

flow rate is 590,000 barrels per day = 28.755 ft^3/sec

temperature of pipe = 46 degree celcius

length of pipe is 1.9 mile = 10032 ft

velocity of flow= \frac{28.755}{\frac{\pi}{4} 3^2} = 4.068 ft/s

applying bernouli eq at two point in pipeline

P1 = P2

v1 = v2

z1 = z2 so we have

h_{in} = h_f

h_{in} = \frac{ flv^2}{2gD}

h_{in} =  \frac{0.0155 \times 10032 \times 4.068^2}{2\times 32.174 \times 3}

h_{in} = 13.32 ft

POwer P = \rho gQ h_{in}

   P = 53.71 \times 32.174 \times 27.755 \times 13.32 = 634141.29 ldf ft/sec

Power P = 1152.99 hp                   0

power needed for each mile = \frac{1152.99}{1.9} = 606.83 hp/mile

4 0
3 years ago
A person slaps her leg with her hand, which results in her hand coming to rest in a time interval of 2.75 ms from an initial spe
bazaltina [42]

Answer:

1350N

Explanation:

2.75 ms = 2.75*10^{-3}s

The force exerted on the hand would be the momentum divided by the duration of contact.

As the hand is coming to rest, final velocity would be 0

F = \frac{\Delta P}{\Delta t} = \frac{m(0 - v)}{\Delta t} = \frac{1.65*(2.25 - 0)}{2.75 * 10^{-3}} = -1350 N

The magnitude of the force would be 1350N

5 0
3 years ago
Who created the idea of evolution?
melisa1 [442]
<span>Charles Darwin and Alfred Russel Wallace were the ones who had the idea of evolution in 1858!</span>
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3 years ago
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