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
Lesechka [4]
3 years ago
13

A train travels 2km in 100 seconds. find the velocity of the train

Physics
1 answer:
AVprozaik [17]3 years ago
3 0

Answer:

20m/s = 72km/h

Explanation:

change 2km=2000m

The speed of the train is

v.t=S <=> v=S/t=2000/100=20 m/s

You might be interested in
What is the answer to this question
leva [86]
The answer is A 0 degrees is the freezing point of water



Plz mark brainliest
7 0
3 years ago
Which of these events indicate that a chemical reaction might have occurred?
blagie [28]
Reactions occur when two or more molecules interact and the molecules change. Bonds between atoms are broken and created to form new molecules. That's it.
7 0
3 years ago
Which shows the conversion of 2.09 × 10-4 meters to millimeters?
Ivenika [448]
I think its A I hope this help thank you!!
4 0
3 years ago
20 points and brainliest‼️‼️‼️‼️
Anastasy [175]

Answer:

0 N

Explanation:

Applying,

F = qvBsin∅................. Equation 1

Where F = Force on the charge, q = charge, v = Velocity, B = magnetic charge, ∅ = angle between the velocity and the magnetic field.

From the question,

Given: q = 4.88×10⁻⁶ C, v = 265 m/s, B = 0.0579 T, ∅ = 0°

Substitute these values into equation 1

F = ( 4.88×10⁻⁶)(265)(0.0579)(sin0)

Since sin0° = 0,

Therefore,

F = 0 N

3 0
3 years ago
Hydrogen gas is generated when acids come into contact with certain metals. When excess hydrochloric acid reacts with 2.2 g of (
CaHeK987 [17]

To solve the problem it is necessary to apply the concepts related to Byle's Law and Avogadro's Law.

The ideal gas equation would help us find the final solution to the problem, defined by

PV = nRT

Where,

T= Temperature of the gas

R = Universal as constant

n = number of moles

V = Volume

P = Pressure

For our case we have that the mass of Zn is 2.2g in moles would be

[tex]Zn = \frac{2.2}{65}[/tex]

Zn = 0.0338

We know that 1 mole of hydrogen gas is proceed by 1 mole of zinc and the result is Zn^{2+}, then Hydrogen can produce the same quantity,

H_2 = 0.0338

Applying the previous equation we have that

V= \frac{nRT}{P}

V = \frac{0.0338*0.08206*293.15}{0.98}

V = 0.829L

Therefore the volume of hydrogen gas is collected is 0.829L

6 0
3 years ago
Other questions:
  • A wheel moves in the xy plane in such a way that the location of its center is given by the equations xo = 12t3 and yo = R = 2,
    6·1 answer
  • Cognitive,emotional, and physical reasons why adolescents engage in riskier behavior
    11·1 answer
  • The chemical formula for sulfuric acid is H2SO4.
    10·2 answers
  • The magnetic circuit below is excited by a 100-turn coil wound over the central leg. The mean length of the central leg is 5.5cm
    8·1 answer
  • Describe the role of plate tectonics for volcanic eruptions, continent formation, seafloor spreading, and mountain formation.
    10·1 answer
  • 6. A lumberjack is standing on a log floating on a lake. She starts from rest, then runs along the log to the end, when she jump
    10·1 answer
  • Explain the basic reason of conduction of an electric current through a conductor.​
    5·2 answers
  • 1. If you add air to a flat tire through a single small entry hole, why does the air spread out to fill the tire?
    8·1 answer
  • A man wears convex lens glasses of focal length 30cm in order to correct his eyes defect. Instead of the optimum 25cm, his dista
    14·1 answer
  • The info below shows three kettles with their powers and the time they take to boil 500cm3 of water. If electricity costs 9p per
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!