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
Bess [88]
3 years ago
6

A box of unknown weight is 1 m away from the fulcrum. To balance the sides, a student applies a force of 4 N at a distance of 3

m away from the fulcrum. How much force is the box exerting on the balance beam? In other words, what is the weight of the box?
This is due by 4:10
Physics
1 answer:
Solnce55 [7]3 years ago
3 0

Answer: I think A

Explanation:

You might be interested in
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
yarga [219]

Answer:

\Delta E=1.64*10^{-18}J

Explanation:

The energy difference between the energy levels involved in the transition of the electron is directly proportional to the frequency of the emitted photon:

\Delta E=h\nu(1)

Where h is the Planck constant. The photon's frequency is inversely proportional to its wavelegth:

\nu=\frac{c}{\lambda}(2)

Here c is the speed of light. Replacing (2) in (1):

\Delta E=\frac{hc}{\lambda}\\\Delta E=\frac{(6.63*10^{-34}J\cdot s)(3*10^8\frac{m}{s})}{121.6*10^{-9}m}\\\Delta E=1.64*10^{-18}J

6 0
3 years ago
You drop a small ball, and then a second small ball. When you drop the second ball, the distance between them is 3 cm. What stat
Alja [10]

Answer:

c) The distance between the balls increases.

Explanation:

If you drop the balls at the same time, regardless of their masses they accelerate equally, since they will be in free fall.

However, if you drop one of the balls earlier, then that ball will gain velocity, whereas the second ball has zero initial velocity. At the time the second ball is dropped, both balls have the same acceleration but different initial velocities.

According to the below kinematics equation:

x = v_0t + \frac{1}{2}at^2

The initial velocity of the first ball will make the difference, and the first ball will travel a greater distance than the second ball. Hence, their distance increases.

3 0
3 years ago
Which is a characteristic of diatoms?
zlopas [31]

Answer:

b

Explanation:

8 0
3 years ago
Present day glaciers are found primarily in _______________.
Mazyrski [523]
<h3><u>Answers;</u></h3>

Antarctica and Greenland

Present day glaciers are found primarily in <em><u>Antarctica and Greenland</u></em>.

<h3><u>Explanation;</u></h3>
  • <em><u>The two major ice sheets that exists today are found primarily in Antarctica and Greenland. Ice sheets are large masses of glacial ice that are also known as continental glaciers.</u></em>
  • Most ice in Antarctica and Greenland spill out into the ocean from a few spots. The Antarctica and Greenland ice sheets combined comprise more than 99 percent of freshwater ice found on Earth.
8 0
3 years ago
Read 2 more answers
A plane is landing at an airport. The plane has a massive amount of kinetic energy due to it's motion. When the plane lands, it
marshall27 [118]

Answer:

A. The brakes used a coil system to convert the kinetic energy into potential energy stored in the brakes

Explanation:

Based on the law of conservation of energy, the brakes used a coil system to convert the kinetic energy into potential energy stored in the brakes.

The law of conservation of energy states that energy is neither created nor destroyed in a system but it is transformed from one form to another.

As the airplane slows down, the kinetic energy which is presented in the motion of the plane is gradually converted to potential energy.

The potential energy is the energy due to the position of a body.

8 0
3 years ago
Other questions:
  • The drawing shows a side view of a swimming pool. The pressure at the surface of the water is atmospheric pressure. The pressure
    7·2 answers
  • The absence of any mechanical linkage between the throttle pedal and the throttle body requires the use of a _______ motor.
    8·1 answer
  • Please help me on this question, it would mean a lot! Thank you! Only question one, thank you
    12·1 answer
  • Jared is experimenting with a force that is attractive only and the weakest of the fundamental forces. He is experimenting with
    15·2 answers
  • A person walked 30.0 m east and then 100.0 m north. Add these two vectors to get the magnitude of the vector sum of the two move
    9·1 answer
  • Explain why stellar parallax cannot be used to measure the distance to other galaxies.
    13·1 answer
  • Even under the most ideal conditions, only about 8% of the internal energy of the steam produced in a steam engine can be conver
    11·1 answer
  • There is no gain in mechanical advantage in a single fixed pulley but they are used​
    12·1 answer
  • Ifa truck starts from rest and it has acceleration of 4 m/s for 5 second
    8·1 answer
  • OF BRICK<br> (a)<br> The pushing force does not make the brick move. Explain why.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!