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
lawyer [7]
2 years ago
6

1) Think of planting a tree. You dig the hole, put it in, and fill it back in. Next,

Physics
1 answer:
pogonyaev2 years ago
6 0

Answer:

at the top of the tree I hope it will help you please follow me

You might be interested in
an airplane is taking off from an airport with velocity of 200 km/h at an angle of 30 degrees above horizontal how fast is its r
ddd [48]
Fffhjndnjehevevevrvrvevrbbrbrrjjrjrjrhrhrhbrvrvvrurrjjrjrhrhr
7 0
2 years ago
Given the hypothesis that the element zinc prevents cancer, which of the following procedures BEST exemplifies the nature of sci
lidiya [134]

Answer:D

Explanation: i found the answer in an answer key!

4 0
3 years ago
An object of unknown mass is initially at rest and dropped from a height h. It reaches the ground with a velocity v1 . The same
Hatshy [7]

Answer:

v_2=\sqrt{2}v_1

Explanation:

The velocity v₁ can be calculated with the kinematic formula:

v_1^{2} =v_0^{2} +2gh

Since the object is initially at rest, v₁ becomes:

v_1=\sqrt{2gh}

Where g is the acceleration due to gravity. Now, the velocity v₂ can be calculated with the same formula, but now the initial velocity is v₁:

v_2^{2}=v_1^{2} +2gh

Substituting v₁ in this expression and solving for v₂, we get:

v_2^{2}=(\sqrt{2gh} )^{2} +2gh=4gh\\\\\implies v_2=\sqrt{4gh}=2\sqrt{gh}

Now, dividing v₂ over v₁, we get the expression:

\frac{v_2}{v_1}=\frac{2\sqrt{gh} }{\sqrt{2gh}}=\sqrt{2}\\   \\\implies v_2=\sqrt{2}v_1

It means that v₂ is √2 times v₁.

4 0
3 years ago
Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. When the carts collide, they hook toget
Nikitich [7]

Answer:

<em>Second option</em>

Explanation:

<u>Linear Momentum</u>

The linear momentum of an object of mass m and speed v is

P=mv

If two or more objects are interacting in the same axis, the total momentum is

P_t=m_1v_1+m_2v_2+...

Where the speeds must be signed according to a fixed reference

The images show a cart of mass 2m moves to the left with speed v since our reference is positive to the right

P_1=-2mv

The second cart of mass m goes to the right at a speed v

P_2=mv

The total momentum before the impact is

P_t=-2mv+mv=-mv

The total momentum after the collision is negative, both carts will join and go to the left side

The first option shows both carts with the same momentum before the collision and therefore, zero momentum after. It's not correct as we have already proven

The third option shows the 2m cart has a positive greater momentum than the other one. We have proven the 2m car has negative momentum. This option is not correct either

The fourth option shows the two carts keep separated after the collision, which contradicts the condition of the question regarding "they hook together".

The second option is the correct one because the mass m_2 has a negative momentum and then the sum of both masses keeps being negative

3 0
3 years ago
Read 2 more answers
Which force most likely created this mountain?<br>compression<br>gravity<br>sheaning<br>tension​
Zielflug [23.3K]

Answer:

compression

Explanation:

compression can produce faulting in rocks in the form of thrust faults and can also cause liner valleys (grabens) and mountains

5 0
3 years ago
Other questions:
  • Tom has a mass of 67.1 kg and Sally has a mass of 58.6 kg. Tom and Sally are standing 32.3 m apart on a massless dance floor. Sa
    13·1 answer
  • Which model is used to describe the interaction of external forces that affect an organization's strategy and ability to compete
    13·1 answer
  • What Kinetic Energy does the sack have just before it strikes the floor?
    11·1 answer
  • Neglecting air resistance, when does a struck baseball accelerate downward at a rate of 9.8 m/s2?
    14·2 answers
  • Is mechanical advantage always greater than one?
    15·1 answer
  • How does space exploration help scientists learn about the universe?
    13·1 answer
  • Which of the following represent units of an electric field? select all that apply
    9·2 answers
  • If 4.1 × 1021 electrons pass through a 40 Ω resistor in 5 min, what is the potential difference across the resistor? The fundame
    15·1 answer
  • Can someone please help me with this problem?
    6·1 answer
  • 8. Why would ChiN want its own currency to be undervalued relative to the U.S. dollar? How does ChiN maintain an undervalued cur
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!