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3 years ago

15

PLS HELP ILL GIVE U BRAINLIST!!

1 answer:

igomit [66]3 years ago

4 0

<u>Answer:</u> The correct statement is True.

<u>Explanation:</u>

There are two types of charges in the electric field:

Negative charge known as electrons
Positive charge known as holes

The above two are oppositely charged species and we also know that electric current is the flow of free electrons in a current.

Negative charges (Electrons) flow from the negative terminal to the positive terminal while positive charges (holes) flow from the positive terminal to the negative terminal. Thus, they move in the opposite direction.

Hence, the correct statement is True.

You might be interested in

Calculate the height of a column of carbon tetrachloride, CCl4(l), with a density of 1.59 g/mL that exerts the same pressure as

julia-pushkina [17]

Answer:

1.30 m

Explanation:

The pressure (P) exerted by a column of a liquid can be calculated with the following expression:

$P=\rho \times g \times h$

where,

ρ is the density of the liquid

g is the gravity

h is the height of the column

If both liquids exert the same pressure:

$PHg = PCCl_{4}\\\rho Hg \times g \times hHg = \rho CCl_{4} \times g \times hCCl_{4}\\\rho Hg \times hHg = \rho CCl_{4} \times hCCl_{4}\\hCCl_{4 = \frac{\rho Hg \times hHg}{\rho CCl_{4}} =\frac{13.6g/mL \times 15.2cm}{1.59g/mL} = 130cm=1.30m$

6 0

3 years ago

What is the kinetic energy of a 400kg house that is racing around a track at 17 meters per second?

nasty-shy [4]

Kinetic energy = (1/2) (mass) (speed squared)

Kinetic energy = (1/2) (400 kg) (17 m/s)²

Kinetic energy = (1/2) (400 kg) (289 m²/s²)

<em>Kinetic energy = 57,800 Joules</em>

<em></em>

(That's some amazing house. I'd like to be there to see it.)

5 0

3 years ago

The y component of a vector R of magnitude k = Bcm shown in the figure below is Ky = +6 cm. What is the direction of this vector

WARRIOR [948]

Given

The y-component of vector K is

$K_y=6\text{ cm}$

The magnitude of vector K is , K=8 cm

To find

The angle

$\theta$

Explanation

Resolving K along its y-component we have,

$\begin{gathered} K_y=Ksin\theta \\ \Rightarrow6=8sin\theta \\ \Rightarrow sin\theta=\frac{3}{4} \\ \Rightarrow\theta=48.59\text{ }^o \end{gathered}$

Conclusion

The angle made with the x-axis is

$48.59^o$

6 0

2 years ago

Solve the equation 3x^2+8x+5=0

Pachacha [2.7K]

$3x^2+8x+5=0\\
3x^2+3x+5x+5=0\\
3x(x+1)+5(x+1)=0\\
(3x+5)(x+1)=0\\
x=-\dfrac{5}{3} \vee x=-1$

4 0

3 years ago

In 1970, a rocket powered car called Blue Flame achieved a maximum speed of 1.00(10 km/h (278m/s).Suppose the magnitude of the c

sammy [17]

Answer:

Distance traveled during this acceleration will be 6950 m

Explanation:

Wear have given maximum speed tat will be equal to final speed of the car v = 278 m/sec

Constant acceleration $a=5.56m/sec^2$

As the car starts initially starts from rest so initial velocity of the car u = 0 m/sec

From third equation of motion $v^2=u^2+2as$

Putting all values in equation

$278^2=0^2+2\times 5.56\times s$

s = 6950 m

So distance traveled during this acceleration will be 6950 m

3 0

4 years ago