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Jet001 [13]
3 years ago
12

Jeff’s father is installing a do-it-yourself security system at his house. He needs to get a device from his workshop that conve

rts electric energy to sound energy. Which device is Jeff’s father looking for? switch motor buzzer bulb battery
Physics
2 answers:
Nostrana [21]3 years ago
6 0

Answer:

Buzzer

Explanation:

Lilit [14]3 years ago
4 0
Answer: buzzer.

The working principle of a buzzer is the conversion of electrical energy to sound energy.

The switch just cuts or permits the flow of current, the motor convertes electrical or other kind of energy into mechanical energy, a bulb converts electrical energy into light and a battery converts chemical energy into electrical energy.
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A 330.-ohm resistor is connected to a 5.00-volt battery. What is the current through the resistor?
Gelneren [198K]

I = 0.0152 A = 15.2 mA

Explanation:

Using Ohm's law,

V = IR or

I = V/R

= (5.00 V)/(330. ohms)

= 0.0152 A

= 15.2 mA

8 0
3 years ago
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Object A is placed on top of object B. Object A is the same temperature as object B. How will heat flow between object A and obj
mash [69]
"No heat will flow between object A and object B" is the one among the following choices given in the question that describes how heat will <span>flow between object A and object B. The correct option among all the options that are given in the question is the second option or option "B". I hope it helps you.</span>
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3 years ago
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A soccer ball with a mass of 0.45 kg is rolling with a momentum of 9 kg*m/s, what is it's velocity?
Lelu [443]

Answer:  20 m/s

Explanation:

P = mv

since we're trying to find the velocity, you change the formula to v = P/m

v = ?

P = 9 kgm/s

m = 0.45 kg

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3 0
2 years ago
For work to be done on a block of wood, which of the following must happen?
Sladkaya [172]
You need to clean and sand wood of any ruff edges
3 0
3 years ago
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Increase 90 in the ratio 6 : 5​
Jobisdone [24]

Answer:

<em>108</em>

Explanation:

<u>Proportions </u>

Two quantities are proportional when one of them can be obtained by multiplying or dividing the other by a constant value. For example, knowing the price of one pencil as p, we can know the cost of purchasing X pencils as C=p.X

We are required to increase 90 by the ratio 6:5. The new value will be proportional to the original because we'll compute the product of

\displaystyle 90\ \frac{6}{5}=108

So the new value is 108

3 0
3 years ago
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