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
"A light beam incident on a diffraction grating consists of waves with two different wavelengths. The separation of the two firs
Fantom [35]

Answer:

A light beam incident on a diffraction grating consists of waves with two different wavelengths. The separation of the two first order lines is great if

the dispersion is great

6 0
3 years ago
Which statement best describes the forces in this picture
garik1379 [7]

Answer:

D.

Explanation:

Force is strength and energy as an attribute of physical action or movement.

6 0
3 years ago
Read 2 more answers
What are the complementary colors of magenta? Blue? And cyan?
zysi [14]

Answer:

Magneta is a mix of blue and red and is a secondary colour.

Explanation:

As we can see green is the complementary colour of Magneta.Complementary colours are the pairs of colours which when combined cancel each other out. This means that when combined they produce a grayscale colour like white or black .

4 0
4 years ago
The position of a dragonfly that is flying parallel to the ground is given as a function of time by r⃗ =[2.90m+(0.0900m/s2)t2]i^
Arlecino [84]

The solution for this problem is:

 
r = [(2.90 + 0.0900t²) i - 0.0150t³ j] m/s² 
this is for t in seconds and r in meters 

v = dr/dt = [0.180t i - 0.0450t² j] m/s² 

tan(-36.0º) = -0.0450t² / 0.180t 
0.7265 = 0.25t 
t = 2.91 s is the velocity vector of the insect

7 0
3 years ago
Read 2 more answers
How man significant figures does the following value gave 43.023
Varvara68 [4.7K]

Answer:

It has 5 I hope this helps you

7 0
3 years ago
Other questions:
  • How does energy from an ocean wave power stuff in a house?
    12·1 answer
  • Why does sugar sink to the bottom of the teacup (for science btw)
    8·1 answer
  • Which of the following are true for E = mc2?
    7·1 answer
  • I don't get it can you please help me?
    9·2 answers
  • The hypothetical situation is described by a physics teacher: two equal mass objects moving at the same speed
    9·1 answer
  • An object that has the ability to do work has __________ energy. (4 points)
    12·2 answers
  • The diagram below illustrates the law of reflection.
    15·1 answer
  • An astronaut tightens a bolt on a satellite in orbit. He rotates in a direction opposite to that of the bolt, and the satellite
    14·1 answer
  • A vector has components Ax = 12.0 m and Ay= 5.00 m. What is the angle that vector A makes with the x-axis?a. 67.4ob. 32.6oc. 22.
    6·1 answer
  • On a typical clear day, the atmospheric electric field points downward and has a magnitude of approximately 103 N/C. Compare the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!