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Basile [38]
3 years ago
11

Is it daylight all over the world at the same time then nighttime all over the world at the same time?explain.

Physics
1 answer:
Afina-wow [57]3 years ago
5 0
It is neither. on one half of the world at a time it is daytime(because that is the side facing the sun, therefore reciving light from the sun) and on the other side on earth it would be nighttime because that side is facing away from the sun. please review this on google if you are unsure.
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A sound wave has a frequency of 425 Hz. What is the period of this wave?
Serhud [2]
Period is 1/frequency
1/425 = 2.353ms
8 0
3 years ago
sing a rope that will snap if the tension in it exceeds 361 N, you need to lower a bundle of old roofing material weighing 455 N
yaroslaw [1]

Answer:

a)-2m/s^2

b)27.2m/s

Explanation:

Hello! The first step to solve this problem is to find the mass of the block remembering that the definition of weight force is mass by gravity (g=9.8m / s ^ 2)

W=455N=weight

W=mg

W=455N=weight

m=\frac{W}{g} =\frac{455}{9.81}=46.38kg

The second step is to draw the free body diagram of the body (see attached image) and use Newton's second law that states that the sum of the forces is equal to mass by acceleration

a=\frac{T-W}{m} =\frac{361-455}{46.38kg} =-2m/s^2

for point b we use the equations of motion with constant acceleration to find the velocity

Vf=\sqrt{X(2)(a)+Vo^2}

Where

Vf = final speed

Vo = Initial speed =0

A = acceleration =2m/s

X = displacement =6.8m

Solving

Vf=\sqrt{(6.8)(2)(2)+0^2}=27.2m/s

4 0
3 years ago
Technician A says that the diameter of a bolt is the same as the wrench size used to remove or install the fastener. Technician
Iteru [2.4K]

Answer:

Neither Technician A or B

Explanation:

Both technicians are wrong. The diameter of bolt is not based on the top where wrench used, but on the smaller part below, it called shanks. Wrench size also not based on the top diameter but the width across the flat. The calculation for the length of a bolt also will not include the top/head, it only includes the shanks.  

7 0
3 years ago
If a person looking at a poster sees green instead of yellow and doesn't see red at all, this person most likely has color blind
katrin [286]
Red - sensitive so answer is c
7 0
3 years ago
Read 2 more answers
What is the lateral surface area of a cylinder with height of 7 m and a base diameter of 4 m (to the nearest whole number)?
yuradex [85]
2×22/7×2×7
44/7×2×7
44×2
88
8 0
3 years ago
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