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KengaRu [80]
3 years ago
13

How fast is the runner moving between 2-3 seconds? Is the other question please help

Physics
1 answer:
Rainbow [258]3 years ago
4 0

Answer:

Concept: Physics analysis

  1. We have a distance vs time graph
  2. That indicates that we are analyzing the distance traveled by either a person or a particle
  3. The runner starts at 4 meters and over the interval of a second runs to 12 meters reaching the 16 meter mark. The runner stood at 16 meter mark for one full second and then runs back 10 meter over the course of one second reaching 6 meter. The runner runs forward again for a second traveling 6 meters, ending at the 12 meter mark.

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If chilled coke and hot tea are kept together tea cools down but coke gets warm .why?​
Harlamova29_29 [7]

When hot tea is mixed to chilled coke, tea loses heat and coke gains heat. Thus, tea cools down but coke gets heated. Because it is liquid and liquid does not totally cool down to the ambient temperature, it and the iced drink will eventually reach the same temperature.

6 0
2 years ago
An electron and a positron are located 17 m away from each other and held fixed by some mechanism. The positron has the same mas
mariarad [96]

Answer:

Velocity will be 13.9 m/s when they are 1.3 m away from each other.

Explanation:

Detailed steps are attached below.

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3 years ago
An ___________ is a current-carrying wire wrapped around an iron core.
mestny [16]
That could be an electromagnet,
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4 0
3 years ago
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A student who runs every day is becoming bored with her physical fitness routine and considers quitting. What is the most effect
LiRa [457]

Answer:

Explained

Explanation:

A student who runs every day is becoming bored with her physical fitness routine and considers quitting. Now in order maintain her fitness routine she needs to break the monotony by changing her exercise regime. She do other activities like play sports two days a week, she do aerobics, she even try some cardio vascular exercises which as good as running. She also try changing her route of running as the new view might inspire her.

8 0
3 years ago
g You want to make simultaneous measurements of the position and momentum of an electron and a proton that are moving along a st
Maslowich

Answer:

1832

Explanation:

From;

Δp Δx = h/4π

Δp = uncertainty in momentum

Δx = uncertainty in position

h= Plank's constant

But p =mv hence, Δp= Δmv

m= mass, v= velocity

mass of electron = 9.11 * 10^-31 Kg

Mass of proton = 1.67 * 10^-27 Kg

since m is a constant,

Δv = h/Δxm4π

For proton;

Δv = 6.6 * 10^-34/4 * 3.14 * 1.67 * 10^-27 * 1 * 10^-10

Δv = 315 ms-1

For electron;

Δv = 6.6 * 10^-34/4 * 3.14 * 9.11 * 10^-31 * 1 * 10^-10

Δv = 577000 ms-1

Ratio of uncertainty of electron to that of proton = 577000 ms-1/315 ms-1= 1832

7 0
3 years ago
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