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Mashcka [7]
3 years ago
12

4. What is the speed of a walking person in m/s if the person travels 1000m in 20 minutes?

Physics
1 answer:
kramer3 years ago
7 0

Answer:

0.80 m/s

Explanation:

What is the speed of a walking person in m/s if the person travels 1000 m in 20 minutes?

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The orbits of most comets
Ludmilka [50]

Answer:

option B

Explanation:

The correct answer is option B

Comets are the frozen snowball that is made of different gases and which rotates around the sun.

Comets are generally icy but when comets come near to the sum they get warm and release gasses which can be seen from the earth.

Comet produces a visible atmosphere or coma.

examples of comets are  Halley's Comet, Comet Encke.

The orbit of comets is entirely beyond the orbit of Neptune.

4 0
3 years ago
Under what conditions can an ideal gas undergo a change of state without doing external work?
Cerrena [4.2K]
Nswer 

<span>Work done = Pressure * ΔV [ change in volume ] </span>

<span>If ΔV=0, then no work is done </span>

<span>Zero work thermodyanamic process is called ' isochoric process.' </span>

<span>For example if a gas heated in a rigid container: the pressure and temperature </span>
<span>of the gas will increase, but the volume will remain the same. </span>

<span>This is called an isochoric thermodynamic process. </span>

<span>It is actually possible to do work on a system without changing the </span>
<span>volume, as in the case of stirring a liquid</span>
8 0
3 years ago
Describe two types of volcanic fields <br><br>please help
spayn [35]
A stratovolcano is a conical volcano consisting of layers of solid lava flows mixed with layers of other rock.

A cinder cone volcano doesn’t have any horizontal layers, and is instead a steep conical hill of tephra that accumulates around and downwind from the vent.
7 0
3 years ago
An object is thrown directly up (positive direction) with a velocity (vo) of 20.0 m/s and do= 0. How high does it rise (v = 0 cm
cluponka [151]

Answer:

20.4

Explanation:

Given:

y₀ = 0 m

v₀ = 20.0 m/s

v = 0 m/s

a = -9.80 m/s²

Find: y

v² = v₀² + 2a (y − y₀)

(0 m/s)² = (20.0 m/s)² + 2 (-9.80 m/s²) (y − 0 m)

y = 20.4 m

3 0
3 years ago
a carmboard 4ft x 4ft Square has the queen at the centre the queen is hit by the striker moves to the front edge, rebounds and g
IceJOKER [234]

Diagonal of cardboard=displacement to hole

  • √4²+4²
  • 4√2

So displacement till edge

  • 4√2/2
  • 2√2

Total distance

  • 4√2+2√2
  • 6√2ft

From centre to hole displacement

  • 2√2
4 0
2 years ago
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