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3 years ago

Two or more simple machines that work tobether arr called

Physics

2 answers:

madreJ [45]3 years ago

6 0

Scissors and a pen that is the answer

ASHA 777 [7]3 years ago

3 0

Compound machines have two or more simple machines working together.
Hope it helps!!

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Three identical resistors are connected in parallel to a battery. If the current of 12. A flows from the battery, how much curre

Doss [256]

Answer:

4 A

Explanation:

We are given that

$R_1=R_2=R_3=4\Omega$

I=12 A

We have to find the current flowing through each resistor.

We know that in parallel combination current flowing through different resistors are different and potential difference across each resistor is same.

Formula :

$\frac{1}{R}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}$

Using the formula

$\frac{1}{R}=\frac{1}{4}+\frac{1}{4}+\frac{1}{4}=\frac{3}{4}$

$R=\frac{4}{3}\Omega$

$V=IR$

Substitute the values

$V=12\times \frac{4}{3}=16 V$

$I_1=\frac{V}{R_1}=\frac{16}{4}=4 A$

$I_1=I_2=I_3=4 A$

Hence, current flows through any one of the resistors is 4 A.

7 0

2 years ago

Which statement best describes the skier?

Olegator [25]

its c!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

8 0

3 years ago

Read 2 more answers

Plz help I will mark brainiest help send answers

Elden [556K]

Answer:

Explanation:

3 0

2 years ago

Con que nombre se conocieron los primeros gimnasio que se crearon

notsponge [240]

Answer:

Los primeros gimnasios registrados datan de hace más de 3000 años en la antigua Persia, donde se los conocía como zurkhaneh, áreas que fomentaban la aptitud física.

7 0

2 years ago

What is the purpose of a voltage source?

ivann1987 [24]

Answer:

B. It increases the potential energy of electrical charges to produce a current.

Explanation:

Battery is a source of constant potential difference

When a charge is passed through the battery then its potential energy changes by

$\Delta U = Q\Delta V$

here we know that

$\Delta V$ = potential difference of battery

so as the charge is passing through the terminals of battery its potential energy is changed by above value.

Now by the conservation of energy principle we know that this change in potential energy will convert into kinetic energy of charge and then the flow of charge will produce current in the circuit.

So battery is used to maintain a constant current in the circuit by giving potential energy to the charge.

4 0

3 years ago