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
kicyunya [14]
2 years ago
9

If a girl walks 6km due west changes directions and walk another 5km due north. Find her displacement in both magnitude and dire

ction
Physics
1 answer:
xenn [34]2 years ago
4 0

Answer:

the girl's displacement in both magnitude and direction is 7.81 m at 50.2⁰ North west.

Explanation:

Given;

6km due west, and

5km due north

The magnitude of her displacement is calculated by forming a right angled triangle. The hypotenuse side of the triangle is the girl's displacement.

d² = 5² + 6²

d² = 25 + 36

d² = 61

d = √61

d = 7.81 m

The direction of the girl is calculated as;

tan \ \theta = \frac{6}{5} \\\\tan \ \theta = 1.2\\\\\theta = tan^{-1} (1.2)\\\\\theta = 50.2^0

Therefore, the girl's displacement in both magnitude and direction is 7.81 m at 50.2⁰ North west.

You might be interested in
Which of the following is not a vector quantity?
baherus [9]

Answer: The answer is density

3 0
2 years ago
Newton’s third law of motion says that for every action there is a(n) and opposite reaction.
Alika [10]

Answer:

Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

Explanation:

this is what i know but i am sorry if this doesn't help

8 0
3 years ago
If you double the voltage in a circuit and reduce the resistance by a factor of four what will happen to the current? A) it will
KatRina [158]
By Ohm's Law, we can relate current, voltage and resistance. It is expressed as V=IR. That is, there is a direct relationship between voltage and resistance and voltage and current.

V = IR
V1/2V1 = I1R1 / I2R1/4
1/2 = 4I1/I2
I2 = 8I1

Therefore, <span> it will increase by a factor of 8. Hope this answers the question.</span>
5 0
3 years ago
A heat engine takes in 840 kJ per cycle from a heat reservoir. Which is not a possible value of the engine's heat output per cyc
zhannawk [14.2K]
We have by the first law of thermodynamics tha energy is preserved, hence we cannot have over 840kJ per cycle. We have by the laws of thermodynamics (the 2nd one in specific) that the entropy of a system cannot increase. We cannot have an output of  840 kJ per cycle from a heat engine because then that would mean that the entropy would stay the same, while any heat engine increases it. Hence, any value \geq 840 kJ is acceptable.
8 0
3 years ago
An airplane pilot wishes to fly due west. a wind of 80.0 km&gt; h (about 50 mi &gt; h ) is blowing toward the south. (a) if the
diamong [38]

let the plane is flying at some angle theta with west towards north

Now we can use the components

v_y = 320 sin\theta

v_x = 320 cos\theta

now since plane has to fly towards west so net speed in north must be equal to speed in south for air

So we can say

320 sin\theta = 80

sin\theta = \frac{1}{4}

\theta = 14.5 degree

so plane has to fly in direction 14.5 degree North of west

6 0
2 years ago
Other questions:
  • Which is true about surface waves?
    7·2 answers
  • What is the energy of a rock that weighs 125 n that is sitting on top of a hill 301 m high?
    10·1 answer
  • A cube with sides of area 22 cm2 contains a 21.2 nanoCoulomb charge. Find the flux of the electric field through the surface of
    13·1 answer
  • An empty bottle has a mass of 35.00 grams. When filled with water, it has a mass of 98.44 grams. Of the same bottle is filled wi
    11·1 answer
  • A 227 kg motorcycle moves with a velocity of 8 m/s. What is its kinetic energy? _______ Joules
    9·1 answer
  • A charge of 4.5x10^-5 C is placed in an electric field with a strength of 2.0x10^4 N/C. What is the electric force acting on the
    13·1 answer
  • Plz answer the question!
    12·1 answer
  • A car is traveling 100 km/hr. How many hours will it take to cover a distance of 850 km?
    13·2 answers
  • Ryan and his dad go paintball img they 700 balls each how much did paintballing cost for the two of them
    9·1 answer
  • Write the first law of motion​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!