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lbvjy [14]
3 years ago
5

Parker completed 4 laps around a 400 m track. He ran for a total of 30 mins. What is the

Physics
1 answer:
Over [174]3 years ago
7 0

Answer:

Distance: 1600 m Displacement: 0

Explanation:

The distance is because He ran 400 meters 4 times getting 1600 m

4*400=1600

The displacement is 0 because displacement is the total distnce away from the starting point and since he ran laps around the track in the end he ended up in the same spot as last time.

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If the volume is held constant, what happens to the pressure of a gas as temperature is decreased? Explain.
Lady bird [3.3K]

Answer:Decreases

Explanation:

Given

Volume is held constant that is it is a isochoric process.

We know that

PV=nRT

as n,V& R are constant therefore only variables are

P & T

so \frac{P_1}{T_1}=\frac{P_2}{T_2}

\frac{P_1}{P_2}=\frac{T_1}{T_2}

As T_1 is decreasing therefore Pressure must also decrease so that ratio remains constant.

6 0
3 years ago
A flat circular plate of copper has a radius of 0.262 m and a mass of 61.5 kg.
Evgesh-ka [11]

Answer:

0.031 m

Explanation:

Density of copper = ρ =  8960 kg/m³

r = Radius = 0.262 m

m = Mass of plate = 61.5 kg

v = Volume of plate = Volume of cylinder = πr²h

\rho=\frac{m}{v}\\\Rightarrow 8940=\frac{61.5}{\pi r^2h}\\\Rightarrow h=\frac{61.5}{\pi 0.262^2\times 8940}\\\Rightarrow h=0.031\ m

So, thickness of plate is 0.031 m

5 0
3 years ago
Which of the following statements about communication is most accurate?
jarptica [38.1K]

The statements about communication that is most accurate is:

A. Most body language is related to emotions and attitudes

Explanation:

We communicate with rather more than words: once we act with somebody, our body features a language of its own. The approach we have a tendency to sit, the gestures we have a tendency to create, the approach we have a tendency to speak, what quantity eye contact we have a tendency to create all of these are non-verbal ways that of act that impact the messages our words are causing.

7 0
3 years ago
Read 2 more answers
A light plane must reach a speed of 33m/s for takeoff.how long a runway is needed if the the acceleration is 3.0m/s^2
Tanzania [10]

Remark

Always write down your givens and what you want to find. The formula you use for such questions will suggest itself if you do this.

Givens

a = 3.0 m/s^2

vi = 0  I presume that's that the question assumes.

vf = 33 m/s

You want d

Formula

vf^2 = vi^2 + 2*a*d

Solution

33^2 = 0^2 + 2 * 3 * d

1089 = 6*d

d = 1089/6

d = 181.5 meters

8 0
4 years ago
ANSWER ASAPPP
Vikki [24]
C) fault block, the mountain is forming on a FAULT line.
5 0
3 years ago
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