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NISA [10]
3 years ago
12

In a(n) _____ circuit there are two or more loops through which the current flows, and each resistor has its own connection to t

he voltage source.
a. series
b. parallel
c. open

/////////////////////////////
A television that requires an average of 0.40 amps of current is connected to a 120 volt current. How much power is the television using?
Physics
2 answers:
kramer3 years ago
8 0

Question 1:

Series Circuit - the current only has one path to take.

Parallel Circuit - the current has two or more paths to take.

Open Circuit - a circuit that's incomplete.

The best option is b. parallel since its a circuit that has two or more loops through which the current flows, and each resistor has its own connection to the voltage source.

Question 2:

We can find the amount of power the television is using by using the formula [ p = cv ] where p = power, c = current, and v = voltage.

p = (0.4)(120)

p = 48

So, the television is using 48 watts of power.

Best of Luck!

sleet_krkn [62]3 years ago
5 0

Question #1:

That's an description of an <em>parallel</em> circuit. <em>(b)</em>

Question #2:  

Power = (current) x (voltage)

Power = (0.4 A) x (120 v)

Power = <em>48 watts</em>

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Objects with masses of 255 kg and a 555 kg are separated by 0.390 m.
eimsori [14]

Answer:

(a). The net gravitational force is 4.20\times10^{-6}\ N

(b). The position is at 0.232 m.

Explanation:

Given that,

Mass of one object M = 255 kg

Mass of another object M'= 555 kg

Separation = 0.390 m

(a). We need to calculate the net gravitational force

Using formula of force

F_{net}=\dfrac{GM'm}{r^2}-\dfrac{GMm}{r^2}

F_{net}=\dfrac{Gm(M'-M)}{r^2}

Put the value into the formula

F_{net}=\dfrac{6.67\times10^{-11}\times32.0(555-255)}{(0.390)^2}

F_{net}=4.20\times10^{-6}\ N

The net gravitational force is 4.20\times10^{-6}\ N

(b). We need to calculate the position

Force from 555 mass = Force from 255 mass

\dfrac{Gm\times555}{x^2}=\dfrac{Gm\times255}{(0.390-x)^2}

555(0.390-x)^2=255x^2

300x^2-0.78x+84.4155=0

x=0.232\ m

The position is at 0.232 m.

Hence, (a). The net gravitational force is 4.20\times10^{-6}\ N

(b). The position is at 0.232 m.

5 0
3 years ago
Read 2 more answers
a vector has an x-component of 19.5m and a y-component of 28.4m. Find the magnitude and direction of the vector
Delicious77 [7]

Answer:

magnitude=34.45 m

direction=55.52\°

Explanation:

Assuming the initial point P1 of this vector is at the origin:

P1=(X1,Y1)=(0,0)

And knowing the other point is P2=(X2,Y2)=(19.5,28.4)

We can find the magnitude and direction of this vector, taking into account a vector has a initial and a final point, with an x-component and a y-component.

For the magnitude we will use the formula to calculate the distance d between two points:

d=\sqrt{{(Y2-Y1)}^{2} +{(X2-X1)}^{2}} (1)

d=\sqrt{{(28.4 m - 0 m)}^{2} +{(19.5 m - 0m)}^{2}} (2)

d=\sqrt{1186.81 m^{2}} (3)

d=34.45 m (4) This is the magnitude of the vector

For the direction, which is the measure of the angle the vector makes with a horizontal line, we will use the following formula:

tan \theta=\frac{Y2-Y1}{X2-X1}  (5)

tan \theta=\frac{24.8 m - 0m}{19.5 m - 0m}  (6)

tan \theta=\frac{24.8}{19.5}  (7)

Finding \theta:

\theta= tan^{-1}(\frac{24.8}{19.5})  (8)

\theta= 55.52\°  (9) This is the direction of the vector

3 0
3 years ago
A light string is wrapped around the outer rim of a solid uniform cylinder of diameter 75.0 cm that can rotate without friction
anyanavicka [17]

Answer:18.5 kg

Explanation:

Given

diameter d=75 cm

mass of stone m=3 kg

velocity of stone v=3.4 m/s

height fallen h=2.40 m

using

v^2-u^2=2as

(3.4)^2=2\times a\times 2.4

a=2.4 m/s^2

Tension of string will Provide Torque to cylinder

T\times r=I\times \alpha

where I=moment\ of\ inertia

\alpha =angular\ acceleration

T=\frac{Mr^2}{2}\times \frac{a}{r}

T=\frac{Ma}{2}

and mg-T=ma

mg-ma=T

Put value of T

mg-ma=\frac{Ma}{2}

mg=a(m+\frac{M}{2})

3\times 9.8=2.4\cdot (m+\frac{M}{2})

12.25=3+\frac{M}{2}

9.25=\frac{M}{2}

M=18.5 kg

4 0
4 years ago
Are stars classified using nebula ​
cluponka [151]
Yes but no Is it for a grade?
3 0
4 years ago
The __________________ is a network of cells and fibers that send messages to different parts of the body.
kotegsom [21]
Answer: B

Explanation: Your nerves send messages to different parts of your body in order to function and feel certain things


Hope I helped!
7 0
3 years ago
Read 2 more answers
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