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
Arisa [49]
2 years ago
9

Which vector should be negative?

Physics
1 answer:
pentagon [3]2 years ago
7 0

Answer:

 The velocity of a falling object

Explanation:

  The positive X axis is towards right and positive Y axis is towards up, so North direction is positive

  A vector with less than 1 magnitude is not negative, because its magnitude may be in between 0 and 1 which is positive vector.

  Any vector whose magnitude is greater than 1 is never be a negative vector.

  The velocity of a falling object is towards bottom, that is towards negative Y axis. So that vector is negative.

You might be interested in
(I will give brainliest whoever helps me !!)
lorasvet [3.4K]
C. Forces have mass and take up space
3 0
2 years ago
A horizontal beam of light of intensity 25 W/m2 is sent through two polarizing sheets. The polarizing direction of the first mak
Zina [86]

Answer:

option (B)

Explanation:

Intensity of unpolarised light, I = 25 W/m^2

When it passes from first polarisr, the intensity of light becomes

I'=\frac{I_{0}}{2}=\frac{25}{2}=12.5 W/m^{2}

Let the intensity of light as it passes from second polariser is I''.

According to the law of Malus

I'' = I' Cos^{2}\theta

Where, θ be the angle between the axis first polariser and the second polariser.

I'' = 12.5\times Cos^{2}15

I'' = 11.66 W/m^2

I'' = 11.7 W/m^2

7 0
3 years ago
An object is at rest in front of a compressed spring. It travels over a surface that exerts a kinetic frictional force on it and
PolarNik [594]

Answer:

the object will travel 0.66 meters before to stop.

Explanation:

Using the energy conservation theorem:

E_i+K_i+W_f=K_f+U_f

The work done by the friction force is given by:

W_f=F_f*d\\W_f=\µ*m*g*d\\W_f=0.35*4*9.81*d\\W_f=13.7d[J]

so:

\frac{1}{2}1800*(10*10^{-2})+0-13.7d=0+0\\d=0.66m

3 0
3 years ago
Why do people bleed .-.
SashulF [63]
Because the liver helps to regulate blood clotting, people<span> with liver disease (for example, hepatitis or cirrhosis) also have a tendency to </span>bleed<span> easily. Most commonly, easy or excessive bruising occurs because the skin and blood vessels are fragile.

Hope This Helped! :3</span>
3 0
3 years ago
Read 2 more answers
4
12345 [234]

Answer:

charcoal is the correct answer

hope it helps , pls mark me as brainliest

6 0
3 years ago
Other questions:
  • Listed following are several astronomical objects. Rank these objects based on their diameter, from largest to smallest. (Note t
    10·1 answer
  • an apple with the mass of 0.95 kilograms hangs from a tree branch at 3.0 meters above the ground. what is the potential energy?
    14·1 answer
  • Two blocks, joined by a string, have masses of 6.0 and 9.0 kg. They rest on a frictionless, horizontal surface. A second string,
    14·1 answer
  • The distance between an object and its image formed by a diverging lens is 5.80 cm. The focal length of the lens is -2.60 cm. Fi
    12·1 answer
  • You are standing on a log and a friend is trying to knock
    12·1 answer
  • What happens to the intensity of solar energy as latitude increases
    15·1 answer
  • A small, single engine airplane is about to take off. The airplane becomes airborne, when its speed reaches 193.0 km/h. The cond
    6·1 answer
  • One fine summer day a group of students was jumping from a railroad bridge into the river below. They stepped off the bridge wit
    6·1 answer
  • Which refers to the ratio of output work to input work of a machine expressed as a percent?
    15·2 answers
  • Clouds form when water vapor in the air ______.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!