PHYSICS HIGH SCHOOL

Look at the graph. During what interval is the object decelerating?A) 0-1s
B)5-20s
C) 20-4
D)40-50s
Look at the graph. During what interval is the object - 1

Answers

Answer 1
Answer:

Answer:

Should be D the correct answer

Explanation:
Answer 2
Answer:

Answer:

D

Explanation:

because the slope decreases

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What is the frequency of radiation emitted by a photon of light if the energy released during its transition to ground state is 3.611 × 10-15 joules? (Planck's constant is 6.626 × 10-34 joule seconds) 5.50 × 10-11 Hz 2.39 × 10-50 Hz 5.45 × 1018 Hz 1.633 × 1027 Hz

Answers

If i was feeling harsh today, I'd say the answer to your question is impossible to obtain due to the fact that photons do not emit radiation, photons ARE the radiation emitted. Though for the sake of it, here is the method...

The simple method:

E=hf

therefore f=e/h

f=(3.611x10^-15) / 6.63x10^-34)

Answer: 5.45x10^18

The potential difference between two points, A and B, in an electric field is 2.00 volts. The energy required to move a charge of 8x10^-19 coulomb from point A to point B is

Answers

The energy required to move the given charge from point A to point B is of  1.6 * 10^(-18) \;\rm J.

Given data:

The potential difference between the points A and B is, V' = 2.00 V.

The magnitude of charge is, q = 8 * 10^(-19)\;\rm C.

The given problem is based on the work done to shift a charge from one point to another.

  • When a charge is moved between the two points, then some work is to be done, which gets stored in the form of electrostatic potential energy.
  • And the mathematical expression for the electrostatic potential energy is,

        W = U

        W = q × V'

       Solve by substituting values as,

       W = (8 * 10^(-19)) * 2.00\n\nW = 1.6 * 10^(-18) \;\rm J

Thus, we can conclude that the energy required to move the given charge from point A to point B is of  1.6 * 10^(-18) \;\rm J.

learn more about the electrostatic potential energy here:

brainly.com/question/20848547

Answer:

W_A_B=-1.6* 10^(-18) J

Explanation:

Let A and B be two points located in a uniform electric field, A being a distance d from B in the direction of the field. The work that an external force must do to bring a unit positive charge q from the reference point to the point considered against the electric force at constant speed, mathematically is expressed by:

V_B_A=(W_A_B)/(q)

Therefore, isolating W_A_B and replacing the data provided:

W_A_B=V_B_A *q=-2*(8* 10^(-19)) =-1.6* 10^(-18)J

Which pair of terms best describes a wooden table?

Answers

The answer is:

A) Biotic and non living

The explanation:

when Biotic refers to the component of living things that are part in ecosystem. Nonliving meaning a certain thing or the table does not have any life but it's biotic.

and we here have a wooden table that is derived from a living thing like a tree and it is nonliving as its a table.

Suppose a yo-yo has a center shaft that has a 0.230 cm radius and that its string is being pulled.(a) If the string is stationary and the yo-yo accelerates away from it at a rate of 1.80 m/s2, what is the angular acceleration of the yo-yo in rad/s2? rad/s2.
(b) What is the angular velocity in rad/s after 0.750 s if it starts from rest? rad/s.
(c) The outside radius of the yo-yo is 3.10 cm.What is the tangential acceleration in m/s2 of a point on its edge? m/s2

Answers

Answer:

Part a)

\alpha = 782.6 rad/s^2

Part B)

\omega = 587 rad/s

Part c)

a_t = 24.3 m/s^2

Explanation:

Part a)

As we know that

a = R \alpha

so we will have

a = 1.80 m/s^2

R = 0.230 cm

\alpha = (a)/(R)

\alpha = (1.80)/(0.230 * 10^(-2))

\alpha = 782.6 rad/s^2

Part B)

Angular speed of the yo-yo

\omega = \alpha t

so we have

\omega = 782.6 * 0.750

\omega = 587 rad/s

Part c)

Tangential acceleration is given as

a_t = R \alpha

a_t = (3.10 * 10^(-2))(782.6)

a_t = 24.3 m/s^2

Integrated circuits are manufactured on chips made of the element.

Answers

The "substrate" of the integrated circuit is super-pure silicon.

Integrated circuits are manufactured on chips made of the element ⇒ silicon.

A ____________ reaction occurs when a substance is broken down into two or more simpler substances in a chemical reaction.

Answers

Answer: Decomposition

Explanation:

A chemical break down of a reactant into two or more products is known as Decomposition reaction. A substance decomposes to simpler substances.

It can be represented as:

AB → A + B

Example, water breaks down into oxygen and hydrogen

2 H₂O → 2 H₂ + O₂

Thus, the correct answer is:

A Decomposition reaction occurs when a substance is broken down into two or more simpler substances in a chemical reaction.
The reaction is called decomposition reaction in which substance(reactant) breaks down into 2 or more substances (products).
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