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
Marina CMI [18]
3 years ago
7

A brick is dropped from the top of a building through the air (friction is present) to the ground below. Part A How does the bri

ck's kinetic energy (K) just before striking the ground compare with the gravitational potential energy Ugrav at the top of the building? Set y=0 at the ground level. How does the brick's kinetic energy () just before striking the ground compare with the gravitational potential energy at the top of the building? Set at the ground level. K is equal to Ugrav. K is greater than Ugrav. K is less than Ugrav.
Physics
1 answer:
maria [59]3 years ago
8 0

Answer:kinetic energy is less than Potential Energy at bottom

Explanation:

Given

Brick is drop from top of tower

suppose brick Potential Energy at top is U=C

Kinetic Energy(K) of brick is =0 at top of building

Just before hitting its Potential Energy is converted to kinetic energy and some is lost due to the friction.

Therefore kinetic Energy is less than the potential energy

at bottom K < U

You might be interested in
Alonzo sprints for 500 meters along a straight track during a race. After crossing the finish line, he to walks back along the t
Nata [24]
450 meters, straight ahead is the answer.
6 0
3 years ago
Read 2 more answers
Which of the following is a major way in which oceans contribute to weather systems?
mylen [45]

Since, the options are not given the question is incomplete the complete question is as follows.:

Which of the following is a major way in which oceans contribute to weather systems?

provide a diverse habitat for many organisms

experience changes in amounts of dissolved salts

store and transport the Sun's heat energy

reach depths that can be as much as 12000 meters

Answer: Store and transport the Sun's heat energy.

Explanation:

Oceanic currents are just like a conveyor belt. It helps in transportation of the warm water and the precipitation from the equator to the poles and the cold water in the poles towards the tropics. This way the oceans counteract the uneven distribution of the radiation of sun that reaches upto the surface earth. This will regulate the global climate.

4 0
3 years ago
A small logo is embedded in a thick block of crown glass (n = 1.52), 4.70 cm beneath the top surface of the glass. The block is
harkovskaia [24]

The concept required to solve this problem is the optical relationship that exists between the apparent depth and actual or actual depth. This is mathematically expressed under the equations.

d'w = d_w (\frac{n_{air}}{n_w})+d_g (\frac{n_{air}}{n_g})

Where,

d_g = Depth of glass

n_w = Refraction index of water

n_g = Refraction index of glass

n_{air} = Refraction index of air

d_w = Depth of water

I enclose a diagram for a better understanding of the problem, in this way we can determine that the apparent depth in the water of the logo would be subject to

d'w = d_w (\frac{n_{air}}{n_w})+d_g (\frac{n_{air}}{n_g})

d'w = (1.7cm) (\frac{1}{1.33})+(4.2cm)(\frac{1}{1.52})

d'w = 4.041cm

Therefore the distance below the upper surface of the water that appears to be the logo is 4.041cm

3 0
3 years ago
1) Momenum is
adelina 88 [10]

Answer:

momentum formula = Mass × Velocity

3 0
3 years ago
Please help on any part you can. I know it is a lot but any help I’d greatly appreciate. I attempted the problem but still do no
Alika [10]

Answer:

Please help on any part you can. I know it is a lot but any help I’d greatly appreciate. I attempted the problem but still do not understand. Thank you so much!

Explanation:

Please help on any part you can. I know it is a lot but any help I’d greatly appreciate. I attempted the problem but still do not understand. Thank you so much!

\boxed{lol}

7 0
2 years ago
Other questions:
  • A person with a weight of 956 N runs up a 2.41 m staircase. If it takes 4.17 seconds to reach the top, how much power was genera
    7·1 answer
  • Select the correct answer.
    14·2 answers
  • Which of the following is a high impact activity?<br> walking<br> sprinting<br> swimming<br> sit-ups
    7·2 answers
  • Once an object enters orbit, what keeps the object moving sideways?
    8·2 answers
  • Deer ticks can carry both Lyme disease and human granulocytic ehrlichiosis (HGE). In a study of ticks in the Midwest, it was fou
    12·1 answer
  • A rod of length 35.50 cm has linear density (mass per length) given by λ = 50.0 + 23.0x where x is the distance from one end, an
    5·1 answer
  • How do I calculate the frequency of an observer
    6·1 answer
  • A force of 85 N is used to push a box along the floor a distance of 15 m. How much work was done?
    6·2 answers
  • In your own words, describe how matter is identified.
    8·2 answers
  • Which describe the image formed by the convex
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!