The formular for determinatio of mass number is this:
Mass number = number of proton + number of neutron
From the question, we are told that:
Mass number = 39
Proton number = 19
Number of proton = ?
Number of neutron = mass number - number of proton
Number of neutron= 39 - 19 = 20
Therefore, number of neurtron = 20.
Use the Ideal Gas Law to the air in the tire :
( P ) ( V ) = ( n ) ( R ) ( T )
n = ( P ) ( V ) / ( R ) ( T )
P = P gauge + P baro = 31.2 psig + 14.8 psia = 46 psia
P = ( 46 psia ) ( 1 atm / 14.696 psia ) = 3.13 atm
n = ( P ) ( V ) / ( R ) ( T )
n = ( 3.13 atm ) ( 4.6 L ) / ( 0.08206 atm - L / mol - K ) ( 26.0 + 273.2 K )
n = 0.5864 moles
m = ( n ) ( M )
m = ( 0.5864 mol ) ( 28.96 g/ mol ) = 16.98 g
Answer
Ceres, Pluto, and Eris are classified as DWARF PLANET.
A) Leftover planetesimals inside the frost line are known as ASTEROIDS.
B) METEORITES are the pieces of Asteroids which are fallen on the earth's surface.
C) COMETS are the objects which are visible with long tails.
D) COMETS are also the leftover planetesimals that are occupied by the jovian planets and are formed in the solar system.
E) Meteor showers are associated with debris from COMETS
you can check attachment for answer.
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Answer:
tension far end 883.055714 N
tension closer 578.634286 N
Explanation:
Given data
scaffold mass m1 = 64 kg
scaffold length L1 = 6.3 m
window washer mass m2 = 85 kg
distance L2 = 2 m
to find out
tension near cable and farther cable
solution
torques at the end farthest
(m1 × g × L1 ) / 2 + (m2 × g × L1- L2 ) = T × L1
T × 6.3 = (64 × 9.81 × 6.3 ) / 2 + (85 × 9.81 × 4.3 )
T = 5563.251 / 6.3
tension = 883.055714 N
and
torques at the other end,
(m1 × g × L1 ) / 2 + (m2 × g × L2 ) = T × L1
T × 6.3 = (64 × 9.81 × 6.3 ) / 2 + (85 × 9.81 × 2 )
T = 3645.396 / 6.3
tension = 578.634286 N