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Jobisdone [24]
4 years ago
14

2 ways of defining velocity

Physics
2 answers:
ehidna [41]4 years ago
8 0

-- a speed and it's direction

-- the rate of change of displacement with time

Bingel [31]4 years ago
4 0
1.The speed of something given in a direction, 2. The rate at which money changes hands within an economy
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How many new facilities does an average facility manager build during his or her career?
wlad13 [49]

An average facility manager can build one new facility during his or her career.

 

<span>A </span>facilities manager<span> is the ultimate organiser, making sure that a workplace meets the needs of employees by managing all of the required services. In this job, you will be responsible for the </span>management<span> of services and processes that support the core business of an organisation.</span>

8 0
3 years ago
A rough estimate of the radius of a nucleus is provided by the formula r 5 kA1/3, where k is approximately 1.3 × 10213 cm and A
Sphinxa [80]

Answer:

Density of 127 I = \rm 1.79\times 10^{14}\ g/cm^3.

Also, \rm Density\ of\ ^{127}I=3.63\times 10^{13}\times Density\ of\ the\ solid\ iodine.

Explanation:

Given, the radius of a nucleus is given as

\rm r=kA^{1/3}.

where,

  • \rm k = 1.3\times 10^{-13} cm.
  • A is the mass number of the nucleus.

The density of the nucleus is defined as the mass of the nucleus M per unit volume V.

\rm \rho = \dfrac{M}{V}=\dfrac{M}{\dfrac 43 \pi r^3}=\dfrac{M}{\dfrac 43 \pi (kA^{1/3})^3}=\dfrac{M}{\dfrac 43 \pi k^3A}.

For the nucleus 127 I,

Mass, M = \rm 2.1\times 10^{-22}\ g.

Mass number, A = 127.

Therefore, the density of the 127 I nucleus is given by

\rm \rho = \dfrac{2.1\times 10^{-22}\ g}{\dfrac 43 \times \pi \times (1.3\times 10^{-13})^3\times 127}=1.79\times 10^{14}\ g/cm^3.

On comparing with the density of the solid iodine,

\rm \dfrac{Density\ of\ ^{127}I}{Density\ of\ the\ solid\ iodine}=\dfrac{1.79\times 10^{14}\ g/cm^3}{4.93\ g/cm^3}=3.63\times 10^{13}.\\\\\Rightarrow Density\ of\ ^{127}I=3.63\times 10^{13}\times Density\ of\ the\ solid\ iodine.

7 0
3 years ago
1) The energy held in the molecules that your lunch is composed of
Rasek [7]

Answer:

Chemical energy

Explanation:

The energy held in the foods molecules a lunch pack is composed of is chemical energy.

They occur within food substances which originates from plants and animals as giant organic molecules.

  • Since food is often derived from plants and animals.
  • Plants produce their own food by producing macromolecules from simple inorganic substances in the environment.
  • Animals takes up these food and build their own body through it.
  • Plants and animal parts constitutes organic molecules in which chemical energy is duly stored.
  • When the molecules are broken down, they released their chemical potential energy into heat energy.
4 0
3 years ago
The radiosonde can be used to measure upper air temperature. Please select the best answer from the choices provided T F
zaharov [31]
A radiosonde is a lightweight package of measurements instruments
carried aloft by a helium balloon. 

The radiosonde can be used to measure upper air temperature. 

This is a true statement.  Consequently, the better answer to choose
from among the choices provided is the  ' T '  , apparently presented
here to suggest the word  ' True '  . 
3 0
3 years ago
Read 2 more answers
What is the kinetic energy of a 7.56 kg bowling ball that is rolling at a speed of 2 m/s ?
postnew [5]

Answer:

K.E=?

Mass=7.56 kg

Velocity=2m/s

Solution::

K.E = 1/2mv^2

K.E=0.5*7.56*(2)^2

K.E= 0.5*7.56*4

K.E=15.12 joules.

7 0
3 years ago
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