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Karo-lina-s [1.5K]
4 years ago
6

Find the mass of a book that has a weight of 14.7N

Physics
1 answer:
kobusy [5.1K]4 years ago
4 0
If it is on earth, the mass will be the same as the weight so 14.7N. If it was on the moon however, the weight would be less as there is less gravity.
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The total power input to the solar cell is 2.4W when the efficiency is 0.20.
GuDViN [60]
Answer: 0.48W

useful power output=total power output*efficency

useful power output=2.4W*0.20=0.48W
5 0
3 years ago
Which two factors does the power of a machine depend on?
lianna [129]

The power of a machine depend on two factors are work and time.

Option C

<u>Explanation:</u>

In science, power defined as the amount of work done in a unit time. i.e. delivering work in a rate of time or energy supply, expressed in input of work or transmitted energy divided by the time interval (t) or W/t.

Example: Some work can be done in the long run with a low-power engine or in a short time with a motor with high performance. The equation for power can be given as

              Power\ (in\ watts) =\frac{\text { work (joules) }}{\text { time (seconds) }}

              P=\frac{W}{t}

7 0
3 years ago
A 2-f and a 1-f capacitor are connected in series and a voltage is applied across the combination. the 2-f capacitor has:_______
VARVARA [1.3K]

Half the potential difference of the the1-µF

A circuit must have a capacitance of 2 F across a 1 kV potential difference for an electrical technician. He has access to a sizable number of 1F capacitors, each of which can sustain a potential difference of no more than 400 V. Please suggest a configuration that uses the fewest capacitors possible.

The 2-mu F capacitor has the following characteristics: none of the aforementioned; half the charge of the 1-mu F capacitor; twice the charge of the 1-mu F capacitor; and half the potential difference of the 1-mu F capacitor.

Q = C V, C = Capacitance of the capacitor gives the charge stored by a capacitor with an applied voltage V. V is the applied voltage.

Learn more about capacitor brainly.com/question/21851402

#SPJ4

7 0
2 years ago
Read 2 more answers
3) If an object has a net negative charge of 4.0 Coulombs, the object possesses
Pani-rosa [81]
The answer to this question is option 2
3 0
3 years ago
What force in Newton is required to accelerate a car starting from rest to 20 m/s in 15 seconds if the mass of the car is 2500 k
Lyrx [107]

We will solve this question using the second law of motion which states that force is directly equal to the product of mass and acceleration.

\sf \: F=ma

Where,

  • F is force
  • m is mass
  • a is acceleration

In our case,

  • F = ?
  • m = 2500 kg
  • a = 20m/s

\tt \: F_{net}  = 2500 \times 20 \\   \tt= 50000

<em>Thus, The force of 50000 Newton is required to accelerate a car of 2500 kg...~</em>

3 0
3 years ago
Read 2 more answers
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