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
il63 [147K]
2 years ago
13

Add these two velocity vectors to find the magnitude of their resultant vector. A. 4.6 meters/second B. 0.8 meters/second C. 2.2

meters/second D. 7.0 meters/second

Physics
1 answer:
Kay [80]2 years ago
5 0

Answer:a

Explanation:vector 2 will slow down vector 1 but vector 1 will still be going. i think.

You might be interested in
Are photons causing the electrons to flow off of the target? ( the target is calcium)
Sliva [168]

Answer:

The energy lost by the atoms is given off as an electromagnetic wave. ... even if it's not very intense, will always cause electrons to be emitted.

Explanation:

5 0
3 years ago
Two objects with masses m and 3m are connected by a compressed spring so that the energy stored in the spring is 375 joules. If
cluponka [151]

Answer:

281.25 J

Explanation:

We are told that the two objects with masses m and 3m.

Also that energy stored in the spring is 375 joules.

Now, initially the centre of mass of the system took place at rest, it means v1 = v and v2 = v/3

Thus, from principle of conservation of energy, we have;

½mv² + ½(3m)(v/3)² = 375J

(m + 3m/9)½v² = 375

(4/3)m × ½v² = 375

Multiply both sides by ¾ to get;

½mv² = 375 × ¾

½mv² = 281.25 J

Therefore, energy of lighter body is 281.25 J

7 0
2 years ago
A student standing on a stationary skateboard tosses a textbook with a mass of mb = 1.25 kg to a friend standing in front of him
juin [17]

Answer:

The velocity of the student has after throwing the book is 0.0345 m/s.

Explanation:

Given that,

Mass of book =1.25 kg

Combined mass = 112 kg

Velocity of book = 3.61 m/s

Angle = 31°

We need to calculate the magnitude of the velocity of the student has after throwing the book

Using conservation of momentum along horizontal  direction

m_{b}v_{b}\cos\theta= m_{c}v_{c}

v_{s}=\dfrac{m_{b}v_{b}\cos\theta}{m_{c}}

Put the value into the formula

v_{c}=\dfrac{1.25\times3.61\times\cos31}{112}

v_{c}=0.0345\ m/s

Hence, The velocity of the student has after throwing the book is 0.0345 m/s.

3 0
3 years ago
Question 15 plz picture above
Pie
15) C. The amount of each element that begins....
8 0
3 years ago
A small, closed chamber of gas is heated. When the gas in the chamber expands,it does 5 J of work on a piston. The gas has an in
Anestetic [448]

Given:

Work done, W = 5 J

Initial energy = 8J

Final energy = 30J

Let's determine if the work done have a positive or nrgative value.

Appy the equation for the first lae of thermodynamics:

\Delta U=Q-W

Where:

U is the change in internal energy

Q is the added heat

W is the work done

To find the work done here, we have:

Rewrite the formula for W

W=Q-\Delta U

Where:

ΔU = 30J - 8J = 22J

Q = 5J

Thus, we have:

\begin{gathered} W=5J-22J \\  \\ W=-17J \end{gathered}

Therefore, the work done here is -17J.

This means the work done in this scenario has a negative value.

ANSWER:

The work done in this scenario has a negative value

3 0
1 year ago
Other questions:
  • find the current to run an electrical motor that has an output of 2.1 horsepower and is 71% efficient. operates at 171 volts ans
    8·1 answer
  • A man on the moon with a mass of 90 kilograms weighs 146 newtons. The radius of the moon is 1.74 × 106
    13·2 answers
  • Which is not a common property of ionic compounds
    12·1 answer
  • 1) As evaporation increases, salinity____
    13·2 answers
  • Which is given as an explanation for how the Paleozoic supercontinent ice cap melted
    9·2 answers
  • Pls help pls due today
    11·2 answers
  • Does the shape of molecule matter? why?​
    6·2 answers
  • A cruise ship made a trip to Guam and back. The trip there took 12 hours and the trip
    7·1 answer
  • I need heelp can anyone heelp me plz
    11·1 answer
  • Please answer B, C, E, and D
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!