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
vova2212 [387]
3 years ago
8

A train is moving with a velocity of 70 km/h.

Physics
1 answer:
hodyreva [135]3 years ago
6 0

Answer:

B: It is moving north.

Explanation:

We are told that a train is moving with a velocity of 70 km/h.

Now, we are also told that the positive direction is north.

This means that the train is moving in the northern direction.

We can't say if it is speeding up or not because we are not given the acceleration.

Thus, option B is correct

You might be interested in
Qué sistemas del organismo afecta la falta de ejercicio?
Alex_Xolod [135]

Answer:

ndmnk.nhlwhfliehfhewfiberjihfbjewbfujebwgwuerkjfhwg.augfukGARWufg.hbjkrwfhogujbr

Explanation: fhulhfuwgeuikBWGFEIUgwfk.ewgukhGFHGUE<FR<HKEl8oiufkhy48e6r3yuogfkh

4 0
2 years ago
Where would you find the sun on this HR diagram?
VLD [36.1K]

Answer:

C

Explanation:

That is where the most heat and light is showing on this diagram.

6 0
3 years ago
A boy is whirling a stone around his head by means of a string. The string makes one complete revolution every second; and the m
Damm [24]

Answer

given,                                                

Tension of string is F                                                  

velocity is increased and the radius is not changed.      

the string makes two complete revolutions every second

consider the centrifugal force acting on the stone          

  = \dfrac{mv^2}{r}                          

now centrifugal force is balanced by tension

T =\dfrac{mv^2}{r}                                

From the above expression we can clearly see that tension is directly proportional to velocity and inversely proportional to radius.

When radius is not changing velocity is increasing means tension will also increase in the string.

8 0
3 years ago
Peering through a telescope could be considered Step 1 of the scientific method.<br> True<br> False
aleksklad [387]

Answer:

<em><u>True:</u></em> because when u look thru a telescope you are making an observation

Explanation:

4 0
2 years ago
Read 2 more answers
Which of these forces determines the chemical properties of an atom? friction force nuclear force gravitational force electrical
zysi [14]
The answers is an electrical force.
Under normal conditions, atoms interact with each other via electrons that are furthest away from the nucleus. These electrons from the what is called the outer shell of the atom, electrons from the outer shell that can participate in chemical reactions are called valence electrons.

3 0
3 years ago
Other questions:
  • What happens during the apparent retrograde motion of a planet?
    14·1 answer
  • Convert 11 ppm into a percent
    11·1 answer
  • - Po
    6·1 answer
  • Enter the expression 2gΔym−−−−−√, where Δ is the uppercase Greek letter Delta.
    9·1 answer
  • An athlete rotates a 1.00-kg discus along a circular path of radius 1.09 m. The maximum speed of the discus is 17.0 m/s. Determi
    7·1 answer
  • Calculate the amount of work done if you use a 100 N force to push a 50 kg box 5 m across the kitchen floor.
    13·2 answers
  • A seed can be round when parents are crossed, scientists refer to the first generation of offspring as
    8·1 answer
  • Two tuning forks are played at the same time. One has a frequency of 176 Hz and the other is 178 Hz. How many beats per second a
    6·1 answer
  • Average acceleration of an object is the:
    13·1 answer
  • A donkey pulls a crate up a rough, inclined plane at constant speed. Which one of the following statements concerning this situa
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!