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
valkas [14]
3 years ago
6

If A = (6i-8j) units, B = (-8i-3j) units, and C = (26i-19j) units, determine a and b

Physics
1 answer:
-BARSIC- [3]3 years ago
3 0

Answer:

Explanation:

given equation

aA + bB + C = 0

Putting the given values

a(6i-8j) +b (-8i-3j) +(26i-19j) = 0

i ( 6a - 8b ) - j ( 8a + 3 b ) = - 26 i + 19 j

comparing the coefficients of i and j

6a - 8b = -26

8a + 3b = -19.

multiplying first equation by 4 and second equation by 3  

24a - 32 b = - 104

24a + 9b = -57

9b + 32b = -57 + 104

41 b = 47

b = 1.41

6 a - 8 x 1.41 = -26

6a = -14.72

a = - 2.45  

You might be interested in
A student heats a liquid on a burner. What happens to the portion of liquid that first begins to warm? It loses energy. It becom
scoray [572]

Answer:

they get closer together

5 0
3 years ago
Read 2 more answers
Which statement best defines work.
alexgriva [62]
Work is in units of Jules, so any comparison with time is incorrect. Answer D is the definition for velocity, which is incorrect. Answer C is the correct answer
7 0
3 years ago
Which of these waves cannot travel in a vacuum?
gayaneshka [121]
Light. The black hole is a vacuum, and not even light can escape it's suction
4 0
3 years ago
Read 2 more answers
Which statements are true? Science is a collection of facts that does not evolve. We have gained all the knowledge we can from s
puteri [66]

Answer: Scientists observe natural events occuring around them. If a hypothesis is not veriffied by the results from the scientific method, scientists may redo the process or create a new hypothesis

Explanation:

4 0
3 years ago
the refractive index of cooking oil is 1.47, and the refractive index of water is 1.33. A thick layer of cooking oil is floating
VARVARA [1.3K]
When light travels from a medium with higher refractive index to a medium with lower refractive index, there is a critical angle after which all the light is reflected (so, there is no refraction).

The value of this critical angle can be derived by Snell's law, and it is equal to
\theta_C = \arcsin ( \frac{n_2}{n_1} )
where n2 is the refractive index of the second medium and n1 is the refractive index of the first medium.

In our problem, n1=1.47 and n2=1.33, so the critical angle is
\theta_C = \arcsin( \frac{1.33}{1.47} )=\arcsin (0.91)=65^{\circ}
4 0
3 years ago
Other questions:
  • Calculate the kinetic energy of a .30 kg ball thrown at a velocity of 96.6 m/hr in J.
    9·1 answer
  • Driving your car with a constant speed of 11 m/s, you encounter a hump in the road with a circular cross section. If the radius
    7·1 answer
  • How are airplanes artificially pressurized?
    8·1 answer
  • A 2,493-kg car is moving down a road with a slope (grade of 14% at a constant speed of 13 m/s. what is the direction and magnitu
    6·1 answer
  • the diagram deliver of uniform mass supported at the middle point six Queens of equal mass are placed at mark 4 on on the lift h
    14·1 answer
  • Need some help please
    7·1 answer
  • Acceleration is the magnitude of average velocity true or false
    12·1 answer
  • Importance of a measurement at least 4 point​
    11·1 answer
  • You are designing a solenoid to produce a 2.0-kG magnetic field. You wish to wrap your insulated wire uniformly around a cardboa
    11·1 answer
  • What is a difference between an object's speed and velocity?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!