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
Marrrta [24]
3 years ago
7

How much time does it take a person to walk 12km north at the velocity at a velocity of 6.5 km/hrs?

Physics
2 answers:
aleksandr82 [10.1K]3 years ago
8 0
I'm thinking this should actually go in the math section because you need to divide 12 by 6.5 to get the number of km/hour.

alukav5142 [94]3 years ago
6 0

"6.5 km/hr" is not a velocity.  It's just a speed, so
we don't know what direction he's walking.

If he happens to be walking north, then it takes him

               (12 km) / (6.5 km/hr)  =  1.846... hours  (rounded) .

If he's walking in any other direction, it takes him longer than that.

If the angle between north and the direction he's walking is
90 degrees or more, then he can never cover any northward
distance, no matter how long he walks.

You might be interested in
Integrate your expressions for dEx and dEy from θ=0 to θ=π. The results will be the x-component and y-component of the electric
Nimfa-mama [501]

Answer:

hello your question is incomplete below is the missing part

Ex = 0

Ey = \frac{-2kQ}{\pi a^2}

Explanation:

Attached below is a detailed solution showing the integration of the expression dEx and dEy from ∅ = 0 to ∅ =π

Ex = 0

Ey = \frac{-2kQ}{\pi a^2}

6 0
3 years ago
THIS IS SOOO IMPORTANT PLS HELP I’LL GIVE BRAINIEST
Ket [755]

Answer:

Chemical etching is a process of printed circuit board (PCB) manufacturing that provides  many advantages over mechanical methods.

Explanation:

There's one! UvU hope this helped in whatever you're in for! <3

Good Luck!

6 0
3 years ago
"In the diagram below, point P is located in the electric field between two oppositely charged parallel plates.
olya-2409 [2.1K]
As proton is heavier then electron, and electrostatic force is directly proportional to mass, so it would be greater and direction would be changed 'cause of different charges.

In short, Your Answer would be Option 4

Hope this helps!
5 0
4 years ago
Read 2 more answers
An ideal gas is compressed at constant pressure p=1500 Pa from a volume Vi=0.4 m3 to Vf=0.25 m3. At the same time, heat is trans
Anon25 [30]

To solve this problem we will apply the first law of thermodynamics and we will make a balance between the heat transferred, its internal energy and the total work. Recall that for gases the definition of work can be expressed in terms of its pressure and volume. Let's start

dQ = dU +dW

Here,

dU = Internal Energy

dW = Work

But internal energy is unchanged, then

dQ = dW

dQ = PdV

Where

dV= Change in Volume

P = Pressure

Finally, the expression of the heat transferred can be expressed in terms of pressure and volume, so it would end up becoming

dQ = p(v_i-v_f)

Replacing,

dQ = (1500)(0.4-0.25)

dQ = 225J

Therefore the correct answer is B.

3 0
4 years ago
A 4-kilogram cat is resting on top of a bookshelf that is 3 meters high. What is the cat’s gravitational potential energy relati
hichkok12 [17]
The answer is 117.6 J

The potential energy of the object is actually its stored energy:

<span>E = m · g · h
E - the potential energy of the object,
m - the mass of the object,
g - acceleration due to gravity,
h - the height of the object.

m = 4 kg
g = 9.8 m/s</span>²
h = 3 m

E = 4 * 9.8 * 3 = 117.6 J
4 0
3 years ago
Other questions:
  • What Exactly is specific heat?
    5·1 answer
  • What is charging by contact ​
    11·1 answer
  • This battery has a difference in potential energy between the positive and negative terminal. Which units express this differenc
    5·2 answers
  • What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?
    8·2 answers
  • A wave traveling in a string in the positive x direction has a wavelength of 35 cm, an amplitude of 8.4 cm, and a period of 1.2
    8·1 answer
  • Scientific notation for 0.000468
    8·1 answer
  • A prisoner is forced to go into one of three rooms, but he can choose which room. The first room is ablaze with fire. The second
    11·2 answers
  • To sterilize a 48.0-g glass baby bottle, we must raise its temperature from 16.0°C to 94.0°C. How much heat transfer is required
    14·1 answer
  • PLZZZ I WILL GIVE BRAINLIEST!!!!! A car traveled on a flat road. The car’s kinetic energy increased over time, while its potenti
    5·2 answers
  • A carrot has a volume of 180 cubic centimeters and a mass of 81 grams . Calculate its destiny
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!