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
vagabundo [1.1K]
3 years ago
13

A 12.0-g bullet is fired horizontally into a 109-g wooden block that is initially at rest on a frictionless horizontal surface a

nd connected to a spring having spring constant 152 N/m. The bullet becomes embedded in the block. If the bullet-block system compresses the spring by a maximum of 78.0 cm, what was the speed of the bullet at impact with the block?
Physics
1 answer:
kykrilka [37]3 years ago
4 0

Answer:

v₀ = 280.6 m / s

Explanation:

we have the shock between the bullet and the block that we can work with at the moment and another part where the assembly (bullet + block) compresses a spring, which we can work with mechanical energy,

We write the mechanical energy when the shock has passed the bodies

   Em₀ = K = ½ (m + M) v²

We write the mechanical energy when the spring is in maximum compression

Em_{f} = K_{e} \\= \frac{1}{2} kx^2\\    Em_0 = Em_{f}

½ (m + M) v² = ½ k x²

Let's calculate the system speed

   v = √ [k x² / (m + M)]

   v = √[152 ×0.78² / (0.012 +0.109) ]

   v = 27.65 m / s

This is the speed of the bullet + Block system

Now let's use the moment to solve the shock

Before the crash

   p₀ = m v₀

After the crash

p_{f} = (m + M) v

The system is formed by the bullet and block assembly, so the forces during the crash are internal and the moment is preserved

 p_0 =  p_{f}

  m v₀ = (m + M) v

  v₀ = v (m + M) / m

let's calculate

v₀ = 27.83 (0.012 +0.109) /0.012

  v₀ = 280.6 m / s

You might be interested in
Anaerobic transmission is when you touch a contaminated surface true or false
Keith_Richards [23]
True because my mom said to me this morning that i have to take my breakfast
5 0
2 years ago
Water in a tank is pressurized by air and pressure measured using a multi-fluid manometer. Determine the gage pressure of air in
sattari [20]

Answer:

The gauge pressure of air is 110 kpa

Explanation:

Atmospheric pressure, P_{atm} = 101 Kpa

P_{gauge} + \rho_w gh_1 + \rho_o gh_2 -\rho_{Hg} gh_3 =P_{atm}

P_{gauge}  = P_{atm} - \rho_w gh_1 - \rho_o gh_2 +\rho_{Hg} gh_3

where;

ρw is the density of water = 1000 kg/m³

ρo is the density of oil = 800 kg/m³

ρHg is the density of mercury = 13,600 kg/m³

g is acceleration due to gravity = 9.8 m/s²

P_{gauge}  = 101,000 - (1000* 9.8*0.2) - (800* 9.8*0.3) +(13,600* 9.8*0.46)\\\\P_{gauge}  = 101,000 - 1960 - 2352 + 13610.26\\\\P_{gauge}  = 110,298.26 pa

Therefore, the gauge pressure of air is 110 kpa

4 0
3 years ago
An object becomes positively charged when it
Montano1993 [528]

Answer:

D

Explanation:

8 0
3 years ago
TRUE OR FALSE? We can see every member of the electromagnetic spectrum?
Svetradugi [14.3K]
It is false. We see only a few members of <span>electromagnetic spectrum</span>

Hope it helps!

4 0
3 years ago
Read 2 more answers
Carla draws two circuit diagrams that connect the same components in different ways, as shown. which statement about the circuit
vagabundo [1.1K]

Carla draws two circuit diagrams that connect the same components in different ways, as shown. The correct statement is "the total resistance in circuit a is greater than that in-circuit b.". Option A. This is further explained below.

<h3>What is a circuit?</h3>

Generally, a circuit is simply defined as a fixed schedule of activities or places for a certain activity, usually including athletics or public performance.

In conclusion, Carla creates two circuit schematics, as illustrated, that link the same components in various ways. "The overall resistance in circuit an is larger than that in b," is the correct statement.

Read more about  resistance

brainly.com/question/11431009

#SPJ4

5 0
2 years ago
Other questions:
  • A book is on the table. If the weight of the book is 25 newtons, what is the magnitude and direction of the normal force?
    11·1 answer
  • A boy throws a rock with an initial velocity of 2.15 m/s at 30.0° above the horizontal. If air resistance is negligible, how lon
    10·1 answer
  • Which of the following correctly describes the importance of demonstrations to scientific investigation?
    10·1 answer
  • Help<br> How much current will flow when a 120 V power supply is connected to a 30<br> resistor ?
    10·1 answer
  • Particle accelerators, such as the Large Hadron Collider, use magnetic fields to steer charged particles around a ring Consider
    14·1 answer
  • A car accelerates at a rate of 8.8 m/s2 with a force from the tires of 11,968 N.
    12·1 answer
  • When balancing a chemical equation, can a coefficient within a chemical equation be adjusted to
    5·2 answers
  • What is the kinetic energy of a 9.0 kg steelhead if its speed is 16 m/s?
    11·1 answer
  • A large stone block is to be part of a harbour wall. The block is supported beneath the surface of the sea by a cable from a cra
    14·2 answers
  • Calculate the average force with which the Sun pulls the Earth. It will help to know
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!