All categories

3 years ago

In the diagram, the arrow shows the movement of electric

Physics

1 answer:

Hoochie [10]3 years ago

7 0

Answer:

So we want to know what causes the electric charges to flow from one end of the battery to the other like the picture shows. In the battery we have a positive and a negative charge that are separated. They give an electric potential difference also known as voltage. The voltage causes the charge (electrons) to move from the negative pole to the positive pole. That is called the electron flow and that is what is what is actually happening in the electric circuit. The image shows that the current flows from the positive pole to the negative. That is called "conventional current" and it is a matter of convention. Both are caused by the difference in electric potential. So the correct answer is C.

You might be interested in

What is the magnitude of the displacement of a car that travels half a lap along a circle of radius of 150m?

Lisa [10]

It would be equal to 2r = 2* 150 = 300m

6 0

3 years ago

Which statement BEST describes the benefits of muscular fitness training?

Hoochie [10]

I think it is A High levels of muscular fitness can improve your self-image and improve or prevent chronic diseases such as diabetes, osteoporosis, and cardiovascular disease.

6 0

4 years ago

A 300 g bird flying along at 6.0 m/s sees a 10 g insect heading straight toward it with a speed of 30 m/s. the bird opens its mo

Bumek [7]

Answer:

6.77m/s

Explanation:

Using the law of conservation of momentum

m1u1 + m2u2 = (m1+m2)v

m1 and m2 are the masses of the object

u1 and u2 are the velocities before collision

v is the final collision

Given

m1 = 300g = 0.3kg

u1 = 6.0m/s

m2 = 10g = 0.01kg

u2 = 30m/s

Required

The bird's speed immediately after swallowing v

Substitute the given values into the formula

m1u1 + m2u2 = (m1+m2)v

0.3(6) + 0.01(30) = (0.3+0.01)v

1.8+0.3 = 0.31v

2.1 = 0.31v

v = 2.1/0.31

v = 6.77m/s

Hence the bird's speed immediately after swallowing is 6.77m/s

5 0

3 years ago

A 14.0 kg cart is coasting down a street at a steady speed of 7.00 m/s. what is the kinetic energy of the cart?

Orlov [11]

I had this question before can you show me the answer choices

3 0

4 years ago

A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745

Elena L [17]

w = instantaneous angular speed = 1.25 rad/s

r = radius = 4.65 m

α = angular acceleration = 0.745 rad/s²

centripetal acceleration is given as

$a_{c}$ = rw²

$a_{c}$ = (4.65 ) (1.25)² = 7.27 m/s²

tangential acceleration is given as

$a_{t}$ = rα

$a_{t}$ =4.65 x 0.745 = 3.46 m/s²

angle is given as

$\theta = tan^{-1}(\frac{a_{c}}{a_{t}})$

$\theta = tan^{-1}(\frac{7.27}{3.46})$

$\theta$ = 64.5 deg

5 0

4 years ago