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
SCORPION-xisa [38]
2 years ago
9

Carol tries to push a bookshelf across the room. As much as she tries, she can not get the bookshelf to move. Which statement be

st describes why the
bookshelf is not moving?
O
A Carol did not apply enough force to the bookshelf and so the forces are unbalanced.
B. Carol did not apply enough force to accelarate the bookshelf and so the forces are still balanced.
0
C. Carol applied too much force to the bookshelf and now the forces on the bookshelf are balanced
D. Carol applied too much force to the bookshelf and now the forces on the bookshelf are unbalanced
Physics
1 answer:
Anettt [7]2 years ago
7 0

Answer:

B.

Explanation:

Carol did not apply enough force to accelarate the bookshelf and so the forces are still balanced.

Hope this helps!! :)

You might be interested in
Which of the following wavelengths will produce standing waves on a string that is 3.5 m long?
denpristay [2]

In a string of length L, the wavelength of the n-th harmonic of the standing wave produced in the string is given by:

\lambda=\frac{2}{n} L


The length of the string in this problem is L=3.5 m, therefore the wavelength of the 1st harmonic of the standing wave is:

\lambda=\frac{2}{1} \cdot 3.5 m=7.0 m


The wavelength of the 2nd harmonic is:

\lambda=\frac{2}{2} \cdot 3.5 m=3.5 m


The wavelength of the 4th harmonic is:

\lambda=\frac{2}{4} \cdot 3.5 m=1.75 m


It is not possible to find any integer n such that \lambda=5 m, therefore the correct options are A, B and D.

3 0
3 years ago
Read 2 more answers
A spaceship from a friendly, extragalactic planet flies toward Earth at 0.203 0.203 times the speed of light and shines a powerf
Serjik [45]

Answer:

567.321nm

Explanation:

See attached handwritten document for more details

7 0
3 years ago
Read 2 more answers
(a) At what height above Earth’s surface is the energy required to lift a satellite to that height equal to the kinetic energy r
Nikitich [7]

Answer:

Explanation:

Gravitational Potential Energy at earth surface U_1=\frac{GM_em}{R_e}

Gravitational Potential Energy at height h is U_2=\frac{GM_em}{R_e+h}

Energy required to lift the satellite E_1=U_1-U_2

E_1=\frac{GM_em}{R_e}-\frac{GM_em}{R_e+h}

Now Energy required to orbit around the earth

E_2=\frac{1}{2}mv_{orbit}^2=\frac{GM_2m}{2(R_e+h)}

\Delta E=E_1-E_2

\Delta E=\frac{GM_em}{R_e}-\frac{GM_em}{R_e+h}-\frac{GM_2m}{2(R_e+h)}

E_1=E_2  (given)

\frac{GM_em}{R_e}-\frac{GM_em}{R_e+h}-\frac{GM_2m}{2(R_e+h)}=0

\frac{1}{R_e}-\frac{3}{2(R_e+h)}=0

h=\frac{R_e}{2}

h=3.19\times 10^6\ m

(b)For greater height E_1  is greater than E_2

thus energy to lift the satellite is more than orbiting around earth

4 0
3 years ago
In what way are liquids different from solids?.
puteri [66]

Answer:

solid molecules are packed closely and liquid molecules are losely packed

7 0
3 years ago
How can the momentum of an object be changed?
pickupchik [31]
C. You’re welcome





Leave a like
3 0
3 years ago
Other questions:
  • When an electron falls from a higher to a lower energy level in an atom, the photon released has a wavelength of 121.6 nm. What
    9·1 answer
  • I have a special thermos that has a vacuum chamber between my hot soup and its outside wall. Because my soup is isolated from it
    5·1 answer
  • The magnetic field at the center of a wire loop of radius , which carries current , is 1 mT in the direction (arrows along the w
    9·1 answer
  • Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a turn with a radius of approxim
    11·1 answer
  • How should parents raise their intersex children: as girls, boys or intersex?
    13·2 answers
  • Suppose you want a telescope that would allow you to see distinguishing features as small as 3.5 km on the Moon some 384,000 km
    11·1 answer
  • Which statement is a scientific law?
    8·2 answers
  • Which of these is an organism?
    8·2 answers
  • The pressure of a liquid at the 10.2 meters depth is 80100 Pascal. - What is the density of the fluid in kg/cubic meter?​
    12·1 answer
  • You are studying a population of flowering plants for several years. When you present your research findings you make the statem
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!