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Gnom [1K]
3 years ago
13

If a person walks 3 m north and 5 meters east, how would you find the displacement for that person? what would the displacement

be?​
Physics
1 answer:
UkoKoshka [18]3 years ago
8 0

Answer:

AC)=(AB)2+(BC)2−−−−−−−−−−−−√=42+32−−−−−−√

⇒displacement=16+9−−−−−√=25−−√=5m

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If vector b is added to vector a under what conditions does the resultant vector has magnitude a+b?​
Citrus2011 [14]

The vectors must point in the same direction.

5 0
2 years ago
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The purpose of the air filter is to
marishachu [46]
The purpose of an air filter is to purify the air around you removing particles such as dust from the air.
8 0
3 years ago
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Initially stationary, a train has a constant acceleration of 0.8 m/s2. (a) What is its speed after 27 s? m/s (b) What is the tot
svlad2 [7]

Answer:

(a) v1 = 21.6 m/s

(b) t = 51.25 s

Explanation:

Use kinematics equation

v1 = v0 + at

Given

v0 = 0 = initial velocity

a = 0.8 m/s^2 = acceleration

(a) t = 27 seconds

v1 = v0 + at = 0 + 0.8*27 = 21.6 m/s

(b) v1 = 41 m/s

v1 = v0 + at

solve for t

t = (v1-v0)/a = (41-0)/0.8 = 51.25 s

7 0
3 years ago
A 1220-w hair dryer is used by several members of the family for a total of 30 min per day during a 30 day month. How much elecr
jolli1 [7]

Answer:

Energy = 18.3 Kilowatt-hour

Explanation:

Given the following data;

Power = 1220 Watts

Time = 30 * 30 = 900 minutes to hours = 900/60 = 15 hours

To find the energy consumption;

Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

Power = \frac {Energy}{time}

Making energy the subject of formula, we have;

Energy = power * time

Energy = 1220 * 15

Energy = 18300 Joules

To convert energy to Kilowatt-hour;

Energy = 18300/1000

Energy = 18.3 Kilowatt-hour

8 0
3 years ago
The Achilles tendon is a fibrous tissue that connects your soleus to your calcaneus and can withstand 145 MPa of tensile stress.
Mnenie [13.5K]

Answer:

 F = 1.2 10⁵ N

Explanation:

Force is defined by

          P = F / A

          F = P A

The area is

          A = π r²

the radius is half the diameter

          r = d / 2

          A = π d²/4

         

we substitute

          F = P π d²/4

let's calculate

          F = 145 10⁶  π (3.25 10⁻²)²/4

          F = 1.2 10⁵ N

5 0
3 years ago
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