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
alexira [117]
3 years ago
10

Your English teacher runs 0.80 km north and 1.20 km west. What is the magnitude of the resultant vector of this position?

Physics
1 answer:
Stella [2.4K]3 years ago
5 0

Answer:

Answer: B

{ \rm{resultant =  \sqrt{ {d _{1} }^{2} +  {d _{2}}^{2}  } }}

  • d1 is 0.80 km
  • d2 is 1.20 km

{ \rm{resultant =  \sqrt{ {(0.80)}^{2} +  {(1.20)}^{2}  } }} \\  = { \rm{ \sqrt{2.80} }} \\ { \boxed{ \mathfrak{ \:  \: answer  = { \rm{1.44 \: km}}}}}

You might be interested in
a girl that has a mass of 55kg is standing on a floor, how much supporting force does the floor have?
KengaRu [80]
A girl standing on a floor would have two opposite forces acting on it. These forces are the weight and the normal force. Since no other forces are acting and that the girl is at rest, then the weight must equate to the normal force. Therefore, the supporting force would be:

F = mg = 55kg (9.81 m/s^2) = 539.55 N
4 0
3 years ago
A car with a momentum (impulse) of 20,000 kg m/s collides with a wall and comes to a rest in 0.1 seconds. How much
Pani-rosa [81]

Answer:

» Force is 200,000 Newtons

Explanation:

{ \tt{force =  \frac{impulse}{time} }} \\  \\ { \tt{force =  \frac{20000}{0.1} }} \\  \\ { \tt{force = 200000 \: newtons}}

8 0
2 years ago
Read 2 more answers
You are on a train that is traveling at 3.0 m/s along a level straight track. Very near and parallel to the track is a wall that
loris [4]

Questions Diagram is attached below

Answer:

T=2.08s

Explanation:

From the question we are told that:

Speed of Train V=3.0m.s

Angle \theta=12\textdegree

Height of window h_w=0.90m

Width of window w_w=2.0m

The Horizontal distance between B and A from Trigonometric Laws is mathematically given by

 b=\frac{0.9}{tan12}

 b=4.23

Therefore

Distance from A-A

 d_a=2.0+4.23

 d_a=6.23

Therefore

Time Required to travel trough d is mathematically given as

 T=\frac{d_a}{v}

 T=\frac{6.23}{3}

 T=2.08s

5 0
3 years ago
How are dwarf planets different from true planets?
morpeh [17]

Answer:

The only difference between a planet and a dwarf planet is the area surrounding each celestial body. A dwarf planet has not cleared the area around its orbit, while a planet has.

Explanation:

the three criteria of the IAU for a full-sized planet are: It is in orbit around the Sun. It has sufficient mass to assume hydrostatic equilibrium (a nearly round shape). It has "cleared the neighborhood" around its orbit .

3 0
3 years ago
A 0.11 N m torque is applied to a fan that was initially at rest. The fan has moment of inertia of 0.034 kg m2. Determine the ki
Mars2501 [29]

Answer:

2.72*10-3 Joules

Explanation:

From Newton's second law of motion

F=ma

\tau=I*\alpha

given

\tau= 0.11Nm\\\\I=0.034kgm^2\\\\t= 8s\\\\\alpha=?

\alpha =0.11/0.034\\\\\alpha=3.23 rad/s^2

the angular velocity is

\omega = \alpha/t\\\\\omega =3.23/8\\\\\omega =0.4 rad/s

KE= 1/2*I* \omega^2

KE=1/2*0.034*0.4^2\\\\KE=1/2*0.034*0.16\\\\KE=0.00272\\\\KE=2.72*10^-3J

4 0
3 years ago
Other questions:
  • Your heart pumps blood at a pressure of 100 mmHg and flow speed of 60 cm/s. At your brain, the blood enters capillaries with suc
    14·1 answer
  • When you put a book on a table the table pushes back. which newton law
    7·1 answer
  • Explain why the Newton’s Cradle device eventually comes to rest. Justify your answer with your Knowledge of Energy (pls mark Bra
    12·2 answers
  • A railroad car of mass M moving at a speed v1 collides and couples with two coupled railroad cars, each of the same mass M and m
    15·1 answer
  • Which of the following is true about the following lever?
    9·2 answers
  • SHOW ADEQUATE WORKINGS IN THIS SECTION
    11·1 answer
  • Unpolarized light of intensity I0 is incident on two polarizing filters. The transmitted light intensity is I0/10. What is the a
    5·1 answer
  • As Merrill watches his finger with both eyes open as he brings his finger closer to his nose, he feels his eye muscles working.
    8·1 answer
  • Waves test please help!
    12·1 answer
  • What is the definition of energy in scientific terms?.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!