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
N76 [4]
3 years ago
11

An unladen swallow that weighs 0.03 kg flies straight northeast a distance of 125 km in 4.0 hours. With the x x direction due ea

st and the y y direction due north, what is the average momentum of the bird (in unit vector notation)?
Physics
1 answer:
balandron [24]3 years ago
8 0

Answer:

The average momentum of the bird is 0.26 kgm/s

Explanation:

The formula to be used here is that of momentum which is

momentum (in kgm/s) = mass (in kg) × velocity (in m/s)

The velocity of the bird is

velocity (in m/s) = distance (in meter) ÷ time (in seconds)

distance in meters = 125km × 1000 = 125,000 m

time in seconds = 4 hrs × 60 × 60 = 14,400 secs

velocity = 125000/14400

velocity = 8.68 m/s

momentum (p) = 0.03 × 8.68

p = 0.26 kgm/s

The average momentum of the bird is 0.26 kgm/s

You might be interested in
Electrically charged particles are found primarily in
lesantik [10]

Answer:

the ionosphere

.......................................................

8 0
2 years ago
Newton’s law of universal gravitation states that the force of gravity
trapecia [35]
All of the above as it states that "<span>a particle attracts every other particle in the universe using a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers"</span>
8 0
3 years ago
Help asap!
patriot [66]

Answer:

220 V

Explanation:

r_{1} = 20 ohm\\r_{2} = 30ohm\\r_{3} = 60ohm

As the resistors are connected in series,

R_{eq} = r_{1} +r_{2} +r_{3}

= 20 + 30 + 60

= 110 ohms

V = IR

= 2 * 110

= 220 V

Hope it helps

7 0
3 years ago
which one of the following is not an example of a combination reaction a. 2H2O(I)---&gt; 2H2(g)+O2(g) b. 2K+CI2---&gt;2KCI c. 2H
Alexxandr [17]
The answer would be A.

Combination reaction, otherwise known as synthesis reaction, occurs when two or more substances react and form a single, more complex substance.

A combination reaction looks like this in an equation:

                                     <em> A + B         </em><em>→       </em><em>AB</em>
                                   reactants              product

So from two reactants they become one product. 
Let's take a look at choice A.

                                   2H₂O(l)       →      2H₂(g) + O₂(g)
                                  reactant                     product(s)

Notice that from one substance, it broke down into two substances. So this is not a combination reaction. This is what you call a <em>decomposition reaction. </em>
6 0
3 years ago
Astronomers are getting information about dark energy from
Thepotemich [5.8K]

The only way of telling about dark energy is our observation of how the universe has been expanding. It basically works the opposite as gravity, pushing things away from it. Thus, the closest answer would be D. The shape of galaxies in cluster galaxies.

6 0
3 years ago
Read 2 more answers
Other questions:
  • Tectonic plates can include
    9·2 answers
  • 1)After catching the ball, Sarah throws it back to Julie. However, Sarah throws it too hard so it is over Julie's head when it r
    9·1 answer
  • A dielectric material such as paper is inserted between the plates of a capacitor as the capacitor holds a fixed charge on its p
    13·1 answer
  • The human ear canal is about 2.3 cm long. If it is regarded as a tube open at one end and closed at the eardrum, what is the fun
    13·1 answer
  • Help please ! Ill give brainliest !! ☁️✨
    7·1 answer
  • A 69.5-kg person throws a 0.0475-kg snowball forward with a ground speed of 31.5 m/s. A second person, with a mass of 57.5 kg, c
    15·1 answer
  • The efficiency of an average gasoline-powered car is about 20%. This means
    9·2 answers
  • What will happen to the current if the voltage is reduced to one half? ​
    13·1 answer
  • Calculate the mass (in g) of 346 cm³ of polythene. The density of polythene is 0.95 g/cm³. Give your answer to 2 decimal places.
    10·1 answer
  • Sometimes, supplies can be delivered to people in remote areas by dropping them off from a plane. This is usually the case for g
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!