1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
White raven [17]
2 years ago
12

HELP!!!!!!!!!!!!

Physics
1 answer:
ziro4ka [17]2 years ago
4 0

Answer:

-4,200,000 J

Explanation:

You might be interested in
I WILL GIVE BRAINLIEST....<br>Determine the value of F...​
aleksley [76]
F should be 10. If The Whole top is 50cm, then we should subtract 10n and 30n which gives us 10.

Or it could be 15 if both top and bottom are 25. 10+15= 25.
6 0
3 years ago
g Calculate the maximum wavelength of light that will cause the photoelectric effect for potassium. Potassium has work function
Ivahew [28]

Answer:

λ = 5.4196 10⁻⁷m,  λ = 541.96 nm    this is green ligh

Explanation:

The photoelectric effect was explained by Eintein assuming that the light was made up of particles called photons and these collided with the electrons taking them out of the material.

 

                     K = h f -Ф

where K is the kinetic energy of the ejected electrons, hf is the energy of the light quanta and fi is the work function of the material.

The speed of light is related to wavelength and frequency

                   c = λ / f

                  f = c /λ

we substitute

                K = h c / λ - Φ

for the case that they ask us the kinetic energy of the electons is zero (K = 0)

                 h c / λ = Ф

                λ = h c / Ф

we calculate

                 λ = 6.63 10⁻³⁴  3 10⁸ / 3.67 10⁻¹⁸

                 λ = 5.4196 10⁻⁷m

let's take nm

                lam = 541.96 nm

this is green light

4 0
3 years ago
Answer question and I will give brainliest
8090 [49]
D. mechanical energy is transformed into sound energy.
8 0
3 years ago
Two examples of an insulator
xz_007 [3.2K]

Some examples of insulators are plastic, glass and rubber.

5 0
3 years ago
1)what is the definition of moment of inertia?
OLEGan [10]

Answer:

Moment of inertia is the inertia of a rotating body with respect to its rotation. So basically it's the object's resistance to a rotational acceleration. This relates to Newton's first law! What does that exactly mean? Let's check out the explanation.

One formula that it is written in is I= mrx^{2}

Explanation:

As Bill Nye says, "Inertia is a property of matter. Objects that are not moving don't move unless they get pushed or pulled. Moving objects keep moving unless they get pushed or pulled. This feature of objects and materials is what we call inertia."

I would check out Dan Fullerton's concept

and Organic Chemistry

3 0
3 years ago
Read 2 more answers
Other questions:
  • A student pulls a block over a rough surface with a constant force FP that is at an angle θ above the horizontal, as shown above
    11·2 answers
  • One student completed a cookie mining experiment in a very short period of time. In your own words, explain how 'time is money'
    14·1 answer
  • A man pushes a cart with force of 120-N at an angle of 50 degrees with the ground. If he walks a horizontal displacement of 20-m
    12·1 answer
  • A simple pendulum makes 120 complete oscillations in 3.00 min at a location where g 5 9.80 m/s2. Find (a) the period of the pend
    15·1 answer
  • Sean pushes a box with a force of 100 N. Christian pushes an identical box with a force of
    5·1 answer
  • I NEED a LOT of help PLEASE!
    10·2 answers
  • a rocket with a lift of mass 20 000kg is blasted upwards with an initial acceleration of 5.0m/s². calculate the initial thurst(f
    6·1 answer
  • Which of these pairs of atoms are isotpoes? (Physical Science) Pair A Pair B Pair C # protons 6 8 5 2 12 12 # neutrons 8 8 5 3 1
    15·1 answer
  • Highlight two factors which shows that heat from the sun does reach the earth's surface by convection.
    10·1 answer
  • What could be the possible answer to the question ?<br><br>thankyou ~​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!