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Makovka662 [10]
3 years ago
11

An instructor furiously cranks an electric generator to simultaneously power 5 electric light bulbs. Each 5.4 V bulb is drawing

0.14 A of current. Ignoring all resistance in the rest of the circuit, what is the power output of the instructor? Give your answer in watts.
Physics
1 answer:
eimsori [14]3 years ago
5 0

Answer:

3.78 W

Explanation:

P = V x I

P = 5.4 x 0.14 = 0.756 W (One bulb)

Total power output : 5 x 0.756 = 3.78 W

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Two capacitors, a 15 micro F and a 25 micro F, are connected in parallel to a 60 Hz source. The total capacitive reactance is :_
Stells [14]

Answer:

<em> 3980.89 ohms</em>

Explanation:

The capacitive reactance is expressed as;

X_c = \frac{1}{2 \pi fC}

f is the frequency

C is the capacitance of the capacitor

Given

f = 60H

C = C1+C2 (parallel connection)

C = 15μF + 25μF

C = 40μF

C = 40 * 10^{-6}F

Substitute into the formula:

X_c = \frac{1}{2(3.14)*60*40*10^{-6}}\\X_c =  \frac{1}{0.0002512}\\X_c = 3,980.89

<em>Hence the  total capacitive reactance is 3980.89 ohms</em>

5 0
3 years ago
Just this last one!!
Pepsi [2]

Answer:

47 \ \frac{m}{s}

Explanation:

s = displacement (m)

u = initial velocity (\frac{m}{s})

v = final velocity (\frac{m}{s})

a = acceleration (\frac{m}{s^{2} })

t = time (s)

s = 235

a = -4.7

v = 0

v² = u² + 2as

(0)² = u² + 2(-4.7)(235)

u² - 2209 = 0

u² = 2209

u = 47

4 0
2 years ago
Read 2 more answers
A rowboat passenger uses an oar to push the boat off the dock by exerting a force of 60.0 N for 2.0s. What impulse acts on the b
NARA [144]
Impulse<span> is the change of momentum of an object when the object is acted upon by a force for an interval of time. It is simply calculated by the expression:
</span>
Impulse = F(change in time)
Impulse = 60(2)
Impulse = 120 Ns

Hope this answers the question. Have a nice day.
6 0
3 years ago
A cart is rolling across the floor at a constant velocity of 2 m/s to the right. The cart is pushed again to the right, and it s
OlgaM077 [116]
The force of the push and acceleration of the cart are  related such as The unbalanced push causes the cart to accelerate.

4 0
3 years ago
When energy is added to a fl uid, the temperature of the fl uid increases. an equation describing this phenomenon is:_________
Ksju [112]

The temperature of a fluid rises when energy is given to it. This phenomenon can be described by the equation:

Q = MCp ΔT

where,

Q is the quantity of added energy.

M is the fluid's mass.

The fluid's heat capacity is denoted by Cp.

T stands for temperature change.

<h3>What happens to a fluid's kinetic energy as the temperature rises?</h3>

The mean kinetic energy of the particles in a liquid rises with temperature. The molecules' higher average kinetic energies allow them to more easily overcome the attraction forces that keep them bound together.

<h3>Which temperature rise makes liquids more fluid?</h3>

The most significant determining factor for fluidity is pouring temperature. Therefore, the fluidity increases as the pouring temperature increases.

<h3>How does a liquid react when the temperature rises?</h3>

Particles in a solid, liquid, or gas move more quickly as its temperature rises. The particles slow down as the temperature drops. When a liquid is sufficiently cooled, it turns into a solid.

learn more about temperature of the fluid  here

brainly.com/question/4215851

#SPJ4

6 0
1 year ago
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