Answer: Phillipe wins the race
Explanation:
Given
Length of track=20 m
Velocity of Phillippe=2 m/s w.r.t sidewalk
Velocity of sidewalk=1.5 m/s
Rena velocity=2 m/s
Therefore absolute velocity of P is 2+1.5=3.5 m/s
Time taken by phillippe
=5.714+10=15.714 s
Time taken by rena
as the time taken by phillippe is less than rena therefore Phillippe wins the race.
Answer:
east of south
Explanation:
Given:
- distance of the person form the initial position,
- direction of the person from the initial position, north of east
- distance supposed to travel form the initial position,
- direction supposed to travel from the initial position, due North
<u>Now refer the schematic for visualization of situation:</u>
...............(1)
.................(2)
<u>Now the direction of the desired position with respect to south:</u>
east of south
<u>Now the distance from the current position to the desired position:</u>
Answer:
Sonar
Explanation:
Sonar is a technique that involves the use of sounds in viewing substances in a water medium to aid movement or communication. It makes use of the advantage of sound waves traveling faster and farther in water when compared to other types of waves such as light waves.
During World War II, the military employed the use of SONAR in imaging the seafloor by sending pulses of sound waves down through the water and measuring the time it took for the sound to bounce off the seafloor and return to the receiver.
Answer:
-0.481 m/s^2
Explanation:
The force equation of this problem is given as:
F - W = ma
where F = upward force holding the clarinet bag
W = downward force (weight of the clarinet)
The mass of the clarinet bag is 3.010 kg, therefore, its weight is:
W = mg
W = 3.010 * 9.8 = 29.498
F = 28.05 N
Therefore:
28.05 - 29.498 = 3.010 * a
-1.448 = 3.010a
=> a = -1.448 / 3.010
a = -0.481 m/s^2
The acceleration of the bag is downward.
Answer:
a) 15.23 roods
b) 15487.15 m²
Explanation:
Given:
Area of plowed land = 2.74 Acres
Livestock area = 24.3 perches by 5.47 perches
Now,
a) Total area = 3 acres + (24.3 perches + 5.47 perches)
also,
1 acre = 40 perches by 4 perches
thus,
Total area = 3 × (40 perches × 4 perches) + (24.3 perches + 5.47 perches)
or
Total area = 480 perch² + 132.921 perch²
Or
Total area = 612.921 perch² .................(1)
Also,
1 rood = 40 perches × 1 perches = 40 perch²
thus,
1 perch² = 1/40 rood
therefore,
612.921 perch² = 612.921 × 1/40 rood = 15.23 roods
b) Now 1 perch = 16.5 ft
thus,
1 perch² = 16.5² ft² = 272.25 ft²
also 1 m = 3.28 ft
thus,
1 ft = 1/3.28 m
or
1 ft² = (1/3.28 m)² = 0.0929 m²
Now
from (1) we have
Area = 612.921 perch²
612.921 perch² = 612.921 × 272.25 ft² = 166617 ft²
also
166617 ft² = 166617 × 0.0929 m² = 15487.15 m²