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
vivado [14]
2 years ago
6

Please answer this question ​

Physics
1 answer:
Zolol [24]2 years ago
3 0

Answer:

C

Explanation:

You might be interested in
a metal bar 70cm long and 4.00 kg in mass supported on two knief -edge placed 10 cm from each end. a 6.00 kg weight is suspended
Klio2033 [76]
First, you make a diagram of all the forces acting on the system. This is shown in the figure. We have to determine F1 and F4. Let's do a momentum balance. Momentum is conserved so the summation of all momentum is equal to zero. Momentum is force*distance.

To determine F1: (reference is F4, so F4=0)

∑Momentum = 0 = -F2 - F3 + F1
0 = (-4 kg)(9.81 m/s2)(0.25m)-(6kg)(9.81 m/s2)(0.5-0.3m)+F1(0.5-0.1m)
F1 = 53.96 N (left knife-edge)

To determine F4: (reference is F1, so F1=0)

∑Momentum = 0 = -F2 - F3 + F4
0 = (-4 kg)(9.81 m/s2)(0.25m)-(6kg)(9.81 m/s2)(0.5-0.2m)+F4(0.5-0.1m)
F4 = 68.67 N (right knife-edge) 


4 0
2 years ago
Read 2 more answers
A marching band consists of rows of musicians walking in straight, even lines. When a marching band performs in an event, such a
Svetllana [295]

Answer:

a. 4v

Explanation:

Alf moves with speed v

Alf travel during the same amount of time that is Δt = (1/4)s

v = (1/4)s /  Δt = s / 4 Δt

s / Δt  = 4 v

Beth travels a distance s during time Δt,

speed of Beth = s / Δt = 4 v .

7 0
2 years ago
To get an accurate data reading, scientists must be sure to
joja [24]
D.
 Always use the right tool to get accurate measurements

8 0
3 years ago
How many atoms are in a sample of 1.83 moles of potassium (K) atoms?
telo118 [61]
<span>Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles.

 </span>1.83 moles K (6.022 x 10^23 atoms / mole ) = 1.10 x 10^24 atoms K
4 0
3 years ago
Gravitational force depends on the mass of an object.
vampirchik [111]

Answer:

sun, earth, capitol building, human, atom

Explanation:

Gravity is directly proportional to the size of an object. Therefore, the object with the most mass will have the greatest force of gravity. We know this from the equation. F = G\frac{m_1m_2}{r^2}

4 0
2 years ago
Other questions:
  • You take a 3 hour nap on a train traveling 40 miles per hour
    15·2 answers
  • How electricity has changed what we do for entertainment?
    6·1 answer
  • Why does an ice cube melt when you hold it in your hand? Question 1 options: Heat from the ice cube is transferred to your hand.
    13·2 answers
  • At one particular moment, a 19.0 kg toboggan is moving over a horizontal surface of snow at 3.60 m/s. After 6.75 s have elapsed,
    13·1 answer
  • A student analyzes data of the motion of a planet as it orbits a star that is in deep space. The orbit of the planet is consider
    12·2 answers
  • Thirty-five percent of all school-age pedestrians killed in school transportation-related crashes were between the ages of
    12·1 answer
  • Lol 2 meter per seconds per seconds per seconds per seconds per seconds per seconds per seconds per seconds per seconds per seco
    12·2 answers
  • ___________________ is the opposition to the flow of electric charge. (Resistance or Electric power)
    10·2 answers
  • How far from the earth must a body be along a line toward the sun so that the sun’s
    14·1 answer
  • If you are good at activities that require agility, what are you able to do well?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!