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
Anestetic [448]
3 years ago
11

An attack helicopter is equipped with a 20-mm cannon that fires 174 g shells in the forward direction with a muzzle speed of 453

m/s. The fully loaded helicopter has a
mass of 2600 kg. A burst of 223 shells is fired in a 6.22 s interval. What is the resulting average force on the helicopter? By what amount is its forward speed reduced? Plz i need help!
Physics
1 answer:
Lisa [10]3 years ago
7 0
 <span>By F = ∆P/∆t 
=>F = n x m x ∆v/∆t 
=>F = [242 x 66.1 x 10^-3 x 488]/3.57 
=>F = 2186.60 N 
By the law of momentum conservation:- 
=>(M+m)V = Mv1 + mv2 
=>(3630 + 66.1 x 10^-3 x 242) x V = 3630 x v1 + 66.1 x 10^-3 x 242 x 488 
=> if we know the initial speed i.e. V we can calculate final speed v1.</span>
You might be interested in
A 1-kg collar (located at point (2,2) from the origin) is pulled along a vertical, frictionless bar with a force of 10 N applied
faltersainse [42]

Answer:

The acceleration of the collar is 10 m/s²

Explanation:

Given;

mass of the collar, m = 1 kg

applied force on the bar, F = 10 N

The acceleration of the collar can be calculated by applying Newton's second law of motion;

F = ma

where;

F is the applied force

m is mass of the object

a is the acceleration

a = F / m

a = 10 / 1

a = 10 m/s²

Therefore, the acceleration of the collar is 10 m/s²

3 0
3 years ago
A proton that has a mass m and is moving at +164 m/s undergoes a head-on elastic collision with a stationary carbon nucleus of m
Irina18 [472]
The concept of this problem is the Law of Conservation of Momentum. Momentum is the product of mass and velocity. To obey the law, the momentum before and after collision should be equal:

m₁ v₁ + m₂v₂ = m₁v₁' + m₂v₂', where
m₁ and m₂ are the masses of the proton and the carbon nucleus, respectively,
v₁ and v₂ are the velocities of the proton and the carbon nucleus before collision, respectively,
v₁' and v₂' are the velocities of the proton and the carbon nucleus after collision, respectively,

m(164) + 12m(0) = mv₁' + 12mv₂'
164 = v₁' + 12v₂'  --> equation 1

The second equation is the coefficient of restitution, e, which is equal to 1 for perfect collision. The equation is

(v₂' - v₁')/(v₁ - v₂) = 1
(v₂' - v₁')/(164 - 0) = 1
v₂' - v₁'=164 ---> equation 2

Solving equations 1 and 2 simultaneously, v₁' =  -138.77 m/s and v₂' = +25.23 m/s. This means that after the collision, the proton bounced to the left at 138.77 m/s, while the stationary carbon nucleus move to the right at 25.23 m/s.
7 0
3 years ago
Provide a reason why houses are painted with dark colours in cold countries.​
fenix001 [56]

Answer:

which is necessary to keep the building warm. Light colors reflect the light hence they are wisely used in tropical ...

Here in the US, not all houses are painted dark colors. In years past, it was common for the ...

7 0
3 years ago
Read 2 more answers
Exactly one pound of bread dough is placed in a baking tin. the dough is cooked in an oven at 350 °f releasing a wonderful aroma
Sladkaya [172]
The mass of the baked loaf will be less than the original dough. In making dough for bread, we have ingredients that are liquid such as water, melted butter, food flavoring, etc. All of this liquid ingredients mixed on the dough will definitely turn into vapor. This vapor is responsible for releasing of the aroma of the freshly baked bread.
7 0
3 years ago
An object is located 51 millimeters from a diverging lens. The object has a height of 13 millimeters and the image height is 3.5
12345 [234]
You would get 13.7 
mi/51mm=3.5mm/13mm
by solving it you will B13.7mm
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following has the greatest amount of kinetic energy a)slice of pizza b)a person at the top of the stairs c)wind d)a
    11·1 answer
  • Marty is developing a new way to heat an airplane's windshield to prevent it from accumulating ice when in flight. A thin layer
    11·2 answers
  • Winston stands on the edge of a building's flat roof, 12 m above the ground, and throws a 147.0-g baseball straight down. the ba
    6·1 answer
  • According to the scientific observation that energy is conserved in a "closed system,” no machine can do work on its surrounding
    8·2 answers
  • One block rests upon a horizontal surface. A second identical block rests upon the first one. The coefficient of static friction
    8·1 answer
  • PLZZZ HELP
    14·1 answer
  • Consider two identical objects of mass m = 0.250 kg and charge q = 4.00 μC. The first charge is held in place at the origin of a
    8·1 answer
  • Please help!!!
    11·1 answer
  • AKS 8a - Phenomena-Based Question: Use the data and the graph to make a claim as to which person represents each letter on the g
    9·1 answer
  • A 5kg object is moving downward at a speed of 12m/s. If it is currently 2.6m above the ground, what is its potential energy? Use
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!