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
Sidana [21]
2 years ago
8

I need help with question 4 please​

Physics
1 answer:
Yuki888 [10]2 years ago
4 0

Answer:

V = 10 km / 1 hr = 10 km/hr

V = -10 j km / hr   if one were to use i, j, k as unit vectors with the usual orientation

You might be interested in
Which type of wave has a longer wavelength: AM radio waves (with frequencies in the kilohertz range) or FM radio waves (with fre
faltersainse [42]

Answer:

AM has longer wavelength

Explanation:

The relation between the wavelength and teh frequency is given by

v = f x λ

Where, f is the frequency and λ be the wavelength.

It shows that the wavelength is inversely proportional to the frequency.

So, higher the frequency, smaller be the wavelength.

So, FM has high frequency than AM, thus, FM has lower wavelength as compared to AM.

6 0
3 years ago
What is used to create the sequential order of elements?
algol [13]
Atomic Number
or
Number of Protons

ΩΩΩΩΩΩΩΩΩΩ
5 0
3 years ago
Read 2 more answers
When an unbalanced force acts on an object,
Gwar [14]
When balanced forces follow up on an object, the object won't move. If you push against a wall, the wall pushes back with an equal but opposite force. Neither you nor the wall will move. Forces that cause a change in the motion of an object are unbalanced forces.
6 0
2 years ago
Read 2 more answers
A train’s mass is 18181.81 kg. What is its weight?
wel

Answer:

The trains mass in pounds would be 40084.029 if you would round it to the hundreths

Explanation:

7 0
3 years ago
Read 2 more answers
An isloated point charge produce an electric field with magnitude E at a point 2 m away. At a point 1 m from the charge magnitud
Nina [5.8K]

Answer:

the correct answer is C,      E’= 4E

Explanation:

In this exercise you are asked to calculate the electric field at a given point

         E = k \frac{q}{r^2}

indicates that the field is E for r = 2m

         E = \frac{ k q}{4}                  (1)

the field is requested for a distance r = 1 m

         E ’= k \frac{q}{r'^2}

         E ’= k q / 1

 

from equation 1

         4E = k q

       

we substitute

        E’= 4E

so the correct answer is C

8 0
3 years ago
Other questions:
  • What waves have wavelengths longer than those of visible light? Give an example of how each kind of wave is used.
    13·1 answer
  • If a system absorbs heat and also does work on its surroundings its energy
    8·1 answer
  • Which suspect is one who wrote the suicide note?
    10·1 answer
  • A substance that will change shape to fit its container but has a definite volume is in a phase of matter.
    8·2 answers
  • the police department determined that the force required to drag a 130 N(29 lb) car tire across the pavement at a constant veloc
    8·1 answer
  • An office window has dimensions 3.1 m by 2.1 m. As a result of the passage of a storm, the outside air pressure drops to 0.954 a
    11·1 answer
  • Can someone answer this please I’ll give brainliest
    12·1 answer
  • EASY BRAINLIEST!!URGENT PLEASE HELP.
    8·1 answer
  • When using higher magnification, you need more light. which parts of the microscope can be adjusted to provide more light, and h
    5·1 answer
  • Which gives the work done by a torque during angular displacement?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!