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
Monica [59]
3 years ago
12

A bullet of mass 6.20 10-3 kg, moving at 1320 m/s impacts a tree stump and penetrates 11.00 cm into the wood before coming to re

st. (Take the direction of the bullet to be in the positive direction.) (a) Assuming that the acceleration of the bullet is constant, find the force (including direction) exerted by the wood on the bullet.
Physics
1 answer:
sladkih [1.3K]3 years ago
8 0

Answer:

  F = -49.1   10³ N

Explanation:

Let's use the kinematics to find the acceleration the acceleration of the bullet that they tell us is constant

   v_{f}² = v₀² + 2 a x

Since the bullet is at rest, the final speed is zero

    x = 11.00 cm (1 m / 100 cm) = 0.110 m

    0 = v₀² + 2 a x

   a = -v₀² / 2 x

   a = -1320²/(2 0.110)

   a = -7.92 10⁶ m / s²

With Newton's second law we find the force

   F = m a

   F = 6.20 10⁻³ (-7.92 10⁶)

   F = -49.1   10³ N

The sign means that it is the force that the tree exerts to stop the   bullet

You might be interested in
Is 51/17 a rational number
mylen [45]

Answer:

Yes.

Explanation:

51/17 is a rational number because "A number is considered a rational number if it can be written as one integer divided by another integer."

6 0
3 years ago
Read 2 more answers
The earth's atmosphere (select all that apply)
love history [14]

Answer:

Explanation:

helps recycle water  

reduces the temperature extremes between day and night

recycles carbon dioxide and oxygen

protects the earth from harmful radiation

5 0
3 years ago
Read 2 more answers
How much heat is required to evaporate 0.15 kg of lead at 1750°C, the boiling point for lead? The heat of vaporization for lead
lara [203]

Answer:

Heat required = mass× latent heat Q = 0.15 × 871 ×

3 0
3 years ago
A new restaurant is interested in determining the best time-temperature combination for roasting a five-pound cut of lamb. The t
Leto [7]

Answer:

C

Explanation:

(c) The two cuts that are being roasted for each time-temperature combination are an example of replication.

In the question it is given that  From 10 identical cuts of lamb, 2 are randomly selected to roast using each of the time-temperature combinations in the same oven. Here it is an act of copying the exact sahpe size of the lamb in all cuts, which is nothing but replication. Moreover, this replication can help in proper comparision.

7 0
3 years ago
Sarah, who lives in Australia notices that the length of the shadow of the flagpole is getting shorter every day when measured a
Allisa [31]

Answer:

Time zone is one important factor in difference in location and this in turn affects the result of the resolution and rotation of shadow produced from the sun or other illumination.

Therefore someone at a place might see a clear large shadow due to shinny sun reflection and another a small or dull Shadow at same time if the intensity of the sun or lighting source is going down.

Explanation:

The closer a body/object is to a lighting source the larger the shadow it produces, and the farther the body the smaller the shadow produced.

3 0
3 years ago
Other questions:
  • A light beam is incident on a piece of fluorite (n = 1.434) at the Brewster's angle.
    5·1 answer
  • Regular exercise helps to options: lower blood pressure
    9·2 answers
  • If you take rocks from the Earth to the moon (5 points)
    14·2 answers
  • Suppose you walk 12.5 m in a direction exactly 19° south of west then you walk 19.5 m in a direction exactly 39° west of north.
    9·1 answer
  • The more particles that are hitting each other in a fluid, the less pressure is created. true of false
    14·1 answer
  • This waterbottle has a mass of .5 kg. If the net force acting on the bottle is five and to the right what is the bottles acceler
    12·1 answer
  • Air of temperature T[infinity] = 27 °C is being used to cool an engine. Consider a single cooling fin at a temperature of Ts = 5
    13·1 answer
  • The synthesis of nitrogen trihydride from nitrogen gas and hydrogen gas is shown by which balanced chemical equation?
    15·2 answers
  • A particle of mass m=375 g is launched with velocity of A =4 moves with a length AB=2.5m under the action of tractive force F=3.
    8·1 answer
  • Please help due tomorrow I will give brainliest! and points<br>​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!