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
KengaRu [80]
4 years ago
12

A system consists of two particles. The first particle has mass m1 = 6.60 kg and a velocity of (4.20i + 2.00j) m/s, and the seco

nd particle has mass m2 = 2.00 kg and a velocity of (2.00i − 3.60j) m/s. (Express your answers in vector form.)
Required:
a. What is the velocity of the center of mass of this system?
b. What is the total momentum of this system?
Physics
1 answer:
garik1379 [7]4 years ago
7 0

Answer:

a. 8.465 m/s

b.22.3659

You might be interested in
A uniform magnetic field of 0.50 T is directed along the positive x axis. A proton moving with a speed of 60 km s enters this fi
tatuchka [14]

Explanation:

It is given that,

Magnetic field, B = 0.5 T

Speed of the proton, v = 60 km/s = 60000 m/s

The helical path followed by the proton shown has a pitch of 5.0 mm, p = 0.005 m

We need to find the  angle between the magnetic field and the velocity of the proton. The pitch of the helix is the product of parallel component of velocity and time period. Mathematically, it is given by :

p=v_{||}\times T

p=v\ cos\theta\times \dfrac{2\pi m}{Bq}

cos\theta=\dfrac{pBq}{2\pi mv}

cos\theta=\dfrac{0.005\times 0.5\times 1.6\times 10^{-19}}{2\pi \times 1.67\times 10^{-27}\times 60000}

\theta=50.58^{\circ}

So, the angle between the magnetic field and the velocity of the proton is 50.58 degrees. Hence, this is the required solution.

3 0
4 years ago
2. The force between charges is 7 N. The distance between the charges is 4 x 10-6 m. If one of the charges is 2 x 10-8 C, what i
g100num [7]

Answer:

2) 6.22 × 10^-13

3) 4.56 × 10^-4

Explanation:

4 0
3 years ago
The train with a mass of 49 kg × 10⁴ kg departs from the place and in 25 seconds reaches a speed of 5m / s, determine the attrac
mote1985 [20]

Answer:

Read this entry from a blog about service dogs.

Lexie, an eight-month-old black Labrador retriever, is sleeping quietly at my feet. I can’t help but think that her soft, velvety ears and alert brown eyes would make her the perfect “doggie model” for pet magazines and pet store ads. However, Lexie will soon have a much more important job to do. In a few months, she will become the loyal companion and service dog for a young man who has been blind since birth. She will help him board public transportation, such as buses, subways, and trains, and she will help him safely cross busy intersections. Lexie will even help the young man avoid obstacles, such as high curbs and low overhangs. Like all dogs in our organization, Lexie has undergone months of specialized training to help a visually impaired person lead an active and independent life.

What is the secondary purpose of this blog?

to inform readers about seeing-eye dogs

to entertain readers with details about Lexie

to persuade readers to train service dogs

to convince readers to adopt Labrador retrievers

Explanation:

5 0
4 years ago
the small wobble in the orbit of Neptune helped astronomers discover Pluto. this suggests that this wobble was MOST LIKELY cause
anyanavicka [17]
Most likely gravity, because the gravity would pull it off course or wobble.
3 0
4 years ago
Read 2 more answers
Kelly is riding a bicycle, moves with an initial velocity of 5 m/s. Ten seconds later, she is moving at 15 m/s. What is her acce
sladkih [1.3K]

Answer:

her acceleration is 1 m/sec

Explanation:

The following information is given in the question

The initial velocity is 5 m/s

After 10 seconds, she would be moved at 15 m/s

We need to find the acceleration

As we know that

Acceleration = Change in speed ÷ time

Acceleration = (15 - 5) ÷ (10)

= 1 m/sec

Hence, her acceleration is 1 m/sec

The same would be considered  

3 0
3 years ago
Other questions:
  • LASIK (Laser Assisted in Situ Keratomileusis) is now a common eye surgery in which a laser is used to remove a thin layer of cor
    6·1 answer
  • Two disks are mounted (like a merry-go-round) on low-friction bearings on the same axle and can be brought together so that they
    13·1 answer
  • 2 Points
    9·1 answer
  • What distance will a car traveling 65km/hr travel in 3 hours
    11·1 answer
  • Calculate the moment of inertia of a skater given the following information. (a) The 60.0-kg skater is approximated as a cylinde
    15·1 answer
  • Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates
    14·1 answer
  • As the army approached the bridge into the city, the commander told them to break step. He did not want the soldiers to march in
    10·2 answers
  • What occurs at thermal equilibrium?
    7·2 answers
  • Which type of energy makes up most of the internal energy of a solid substance?
    8·2 answers
  • I NEED ASAP
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!