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Anestetic [448]
3 years ago
8

PLEASE HELP ME PLEASE

Physics
1 answer:
zavuch27 [327]3 years ago
3 0

Answer:

The answer to your question is: Element

Explanation:

Question 1. The atomic number or proton number of an atom has the symbol Z. This number indicates the number of protons and element has. Each elelement has a specific atomic number, two different atomic numbers mean 2 different elements.

From the options given, we conclude that the element is different.

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a boy steps off the end of a high diving board and drops into the water below. it takes the boy 0.78 seconds to reach the water.
tino4ka555 [31]

Answer:

7.644 feet

Explanation:

Free fall means that an object is falling freely with no forces acting upon it except gravity, a defined constant, g = -9.8 m/s2. The distance the object falls, or height, h, is 1/2 gravity x the square of the time falling.

5 0
3 years ago
Anaerobic transmission is when you touch a contaminated surface true or false
Keith_Richards [23]
True because my mom said to me this morning that i have to take my breakfast
5 0
2 years ago
How far will it go, given that the coefficient of kinetic friction is 0.10 and the push imparts an initial speed of 3.9 m/s ?
Akimi4 [234]

Answer:19.5 m

Explanation:

Given

coefficient of kinetic Friction \mu _k=0.10

Initial speed u=3.9\ m/s

Friction is present so it tries to stop to the object and stops it completely after moving certain distance let say s

maximum deceleration provided by friction is

a_{max}=\mu _k\cdot g

a_{max}=0.1\times 3.9=0.39\ m/s^2

using equation of motion

v^2-u^2=2 as

where v=final\ velocity

u=initial velocity

a=acceleration

s=displacement

(0)-(3.9)^2=2\times (-0.39)\times s

s=19.5\ m

6 0
3 years ago
Which one is the best explanation of energy?
vladimir1956 [14]

The energy of a substance is defined as the capacity to do work.The energy may be possessed by the body in various forms.It may be kinetic,potential,magnetic.electric etc.

a- The energy can be transformed from one form to another form.It is called energy conversion.

c-The power defined as the consumption of energy per unit time.

              Mathematically\ power\ P=\frac{E}t} =\frac{W}{t}      

Here E is the energy and W is the work done,t is the time.

d-The S.I unit of energy is Joule[J].

    Hence the correct answer to the question is b. the ability to do work

6 0
3 years ago
Read 2 more answers
Two identical food packets were dropped from a helicopter. The first food packet was dropped from a height of 1,681 feet and the
Kazeer [188]

Answer:

The y intercept of the H2 is greater than H1.

Explanation:

Given,

The height from which the first food packet dropped = 1681 feet

The height from which the second food packet dropped = 961 feet

To find :

Two height functions and to compare in graph?

solution:

h1(t) = -16t^2 + 1681 is a vertical translation of h2(t) = -16t^2 + 961.

The y-intercept of h2 is 720 ft less than that of h1.

h1(t) = -4t^2 + 41 is a vertical translation of h2(t) = -4t^2 + 31.

The y-intercept of h2 is 10 ft greater than that of h1.

h1(t) = -16t^2 + 1681 is a vertical translation of h2(t) = -16t^2 + 961.

The y-intercept of h2 is 720 ft greater than that of h1.

h1(t) = -4t^2 + 41 is a vertical translation ofh2(t) = -16t^2 + 31.

The y-intercept of h2 is 10 ft less than that of h1.

3 0
3 years ago
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