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Sav [38]
3 years ago
5

which type of lightening device would you use for each of the following needs: an economical light source in a manufacturing pla

nt, an eye-catching sign that will be visible at night, and a basketball stadium? Explain - PHYSICAL SCIENCE
Physics
1 answer:
Yakvenalex [24]3 years ago
7 0
Btw only someone who is nice will answer tour question. You can't expect for explanition when the question is only worth 5 points. Not trying to be mean sorry if i am being mean
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What is the pressure at the bottom of a tank 1-m deep? Take the density of water to be 1000-kg/m^3, and gravitational accelerati
lara31 [8.8K]

To solve this problem we will use the concepts related to hydrostatic pressure. Which determines the pressure of a body at a given depth of a liquid.

Mathematically this can be described as

P= \rho gh

Here

\rho = Density

g = Gravity

h = Height (Depth)

If we replace the values given in the equation we will have to

P = 1000 (9.8)(1)

P = 9800 Pa

Therefore the pressure at the bottom will be 9.8kPa

4 0
3 years ago
Why does the static electricity in an object not constantly shock us?
Nina [5.8K]

Answer:Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged.

Explanation:

hope this helped D:

5 0
3 years ago
The electromagnetic wave shown above is made of vibrating
amid [387]
The electromagnetic wave shown above is made up of vibrating Electric fields. 

I assume this is why electromagnetic waves can travel through a vacuum, due to lack of matter. 
8 0
3 years ago
A student tests the electrical conduction of four materials.
ella [17]

Answer:

A. aluminum, iron, and silver only

Explanation:

metal elements are great conductors; aluminum, iron, and silver are all metals.

plastic isn't an element, but it still doesn't conduct electricity very well because it isn't a metal

(so I would leave out plastic, because you can only choose 3 max based on the answer choices)

3 0
1 year ago
it takes car 1 minute to go from rest to 30 m/s east. What is the acceleration of this car? Please Show Work.
ivann1987 [24]
30-0 ÷ 60 = .5m/s²

(vi-vf) ÷ t = a
7 0
3 years ago
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