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3 years ago

Thank you if you them

Physics

1 answer:

astraxan [27]3 years ago

4 0

Answer:

Explanation:

3. The word circuit means "go around", therefore a circuit is a pathway or closed path around which electricity (or water) flows.

4. Electrons flowing through a wire can be compared to water flowing through a hose. Once the flow of electrons or water is going, work, is performed.

5. You would get shocked in a bumper car by touching the floor and the ceiling at the same time. This means you are completing the circuit allowing electricity to flow.

6. Electricity from a wall outlet has enough energy to stop your heart.

7. Electricity is the flow of electrons, because electrons move or jump from atom to atom.

8. Materials that allow electrons to move easily from atom to atom are called conductors.

9. Materials that do not allow electrons to flow easily are called insulators.

10. Semi- conductors are materials that are somewhere in between .

11. Voltage is the force or pressure of electricity and is compared to the amount of water pressure in a hose.

12. Current (amps ) is the amount of electricity and is compared to the amount of water in a hose .

13. Watts (power) is the term for work performed by electricity.

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Parasaurolophus was a dinosaur whose distinguishing feature was a hollow crest on the head. The 1.5-m-long hollow tube in the cr

Oksi-84 [34.3K]

Answer:

f1 = 58.3Hz, f2 = 175Hz, f3 = 291.6Hz

Explanation:

lets assume speed of sound is 350 m/s.

frequencies of a standing wave modes of an open-close tube of length L

fm = m(v/4L)

where m is 1,3,5,7......

and fm = mf1

where f1 = fundamental frequency

so therefore: f1 = 350 x 4 / 1.5

f1 = 58.3Hz

f2 = 3 x 58.3

f2 = 175Hz

f3 = 5 x 58.3

f3 = 291.6Hz

5 0

4 years ago

Practice Problems

aleksandrvk [35]

(1) The distance traveled by Thomas is 190 m

(2) The displacement of Thomas is 100 m forward

(3) The velocity of Thomas is 0.056 m/s

<em>"Your question is not complete, check the image uploaded for the picture of this motion",</em>

(1) Distance is the sum of the total path covered.

first distance to cafe = 100 m

second distance to library = 45 m

third distance back to the cafe = 45 m

The total distance = 100 + 45 + 45 = 190 m

The distance traveled by Thomas is 190 m

(2) Displacement is the change in the position of an object;

Initial displacement forward = (100 + 45) m

Final displacement backward = 45 m

The total displacement = 145 m - 45 m = 100 m forward

The displacement of Thomas is 100 m forward

(3) The velocity of Thomas is calculated as the change in displacement per change in time.

the change in displacement = 100 m

the time of motion, t = 30 mins = 30 x 60 = 1800 s

$v = \frac{\Delta x}{\Delta t} = \frac{100 \ m}{1800 \ s} = 0.056 \ m/s$

Learn more here: brainly.com/question/17345815

4 0

3 years ago

A baseball has a mass of 145 g. a bat exerts a force of 18,400 n on the ball. what is the acceleration of the ball? 1.27 x 102 m

fomenos

The acceleration of the ball is 1.27 X 10⁵ m/s²

The Newtons second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.

Given,

Mass = 145 kg

Force = 18,400 N

We need to calculate the acceleration

Using formula of acceleration(a)

a = F/m where F= force and m= mass

Put the values in the formula,

a = 18,400/(145 X 10⁻³) = 1.27 X 10⁵ m/s²

Therefor, the acceleration of the ball is 1.27 X 10⁵ m/s².

Learn more about the Newton's second law with the help of the given link:

brainly.com/question/27573481

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