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
FromTheMoon [43]
4 years ago
15

If a vector A has components A. 0, and Ay -0, then the magnitude of the vector is negative. Select one: True False

Physics
2 answers:
Dima020 [189]4 years ago
8 0

Answer:

False

Explanation:

The magnitude of any vector is given by,

||A||=\sqrt{A_x^2+A_y^2}

The magnitude of anything is never negative. It can be even seen from the formula that the components are squared. A squared value can never be negative. Even if the component is negative the square will be always positive.

So, magnitude of the vector is <u>not</u> negative.

Anika [276]4 years ago
7 0

Answer:

The given statement is false.

Explanation:

For a given vector \overrightarrow{A}=A_{x}\widehat{i}+A_{y}\widehat{j}

The magnitude is given by |A|=\sqrt{A_{x}^{2}+A_{y}^{2}}

As we can see that the quantity on the right side of equation is always positive since square root of a quantity is always positive thus we conclude that the magnitude of any vector and hence vector A is always positive.

You might be interested in
What are the density, specific gravity and mass of the air in a room whose dimensions are 4 m * 6 m * 8 m at 100 kPa and 25 C.
Volgvan

Answer:

Density = 1.1839 kg/m³

Mass = 227.3088 kg

Specific Gravity = 0.00118746 kg/m³

Explanation:

Room dimensions are 4 m, 6 m & 8 m. Thus, volume = 4 × 6 × 8 = 192 m³

Now, from tables, density of air at 25°C is 1.1839 kg/m³

Now formula for density is;

ρ = mass(m)/volume(v)

Plugging in the relevant values to give;

1.1839 = m/192

m = 227.3088 kg

Formula for specific gravity of air is;

S.G_air = density of air/density of water

From tables, density of water at 25°C is 997 kg/m³

S.G_air = 1.1839/997 = 0.00118746 kg/m³

4 0
3 years ago
A satellite was in two separate crashes. In both crashes, the satellite had the same mass. Engineers want to know about the spee
irina1246 [14]

Answer & Explanation:

Crashing into the asteroid would cause the satellite to slow down, stop, or reverse direction, because it is a force in the opposite direction to the satellite's motion. Whichever crash was a stronger force would cause it to change motion more. It takes a stronger force to change the velocity of a more massive object.

7 0
3 years ago
If the sound level at a point is 98.0 dB, what is the intensity of sound at that point (Unit=W/m^2)? please help will give brain
Firlakuza [10]

Answer: The decibel scale is a logarithmic scale where each bel or 10 decibels correspondents to a factor of ten. A power intensity of 10^(-12) watts per square meter is the standard reference for a SPL of 0 db. So an SPL of 98 db corresponds to a power intensity of 10^(9.8)*10^(-12) or 10^(9.8–12) w/m^2.

0.006309573 w/m^2.

You can also readily find the value for any given SPL using the online calculator at: http://www.sengpielaudio.com/calculator-soundlevel.htm

Explanation:

7 0
2 years ago
Read 2 more answers
The seeds were sown (change the voice)​
MaRussiya [10]

Answer:

He sowed the seeds

Explanation:

While the question should have given the person who did the sowing for example the seeds were sown by him/ her/ the farmer/ or any name. Therefore, voice is given in passive and to change passive voice to active voice then the sentence will read as follows assuming that the seeds were sown by him

He sowed the seeds

7 0
3 years ago
Gravity is a force. <br> True <br> False
Ratling [72]
The answer is true. Gravity is the force that keeps us all on the ground.
7 0
3 years ago
Read 2 more answers
Other questions:
  • What are three examples of a chemical change in matte
    15·1 answer
  • Which gas is a greenhouse gas?<br><br> nitrogen<br> oxygen<br> carbon dioxide<br> hydrogen
    14·2 answers
  • The brakes in a car increase in temperature by ΔT when bringing the car to rest from a speed v. How much greater would ΔT be if
    13·1 answer
  • Normally the rate at which you expend energy
    6·1 answer
  • A 1.10-kg object slides to the right on a surface having a coefficient of kinetic friction 0.250 (Figure a). The object has a sp
    6·1 answer
  • In a mixture, the ingredients intermingle and
    10·1 answer
  • PLEASE HELP ASAP.
    7·1 answer
  • Your friend says your body is made up of more than 99.9999% empty space. What do you think
    15·1 answer
  • Please help! i'll give brainliest!!
    5·2 answers
  • a 1500 kg vehicle is traveling on a curved, icy road. the road is banked at an angle of 10.0 degrees and has a radius of curvatu
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!