Answer:
18931.4
Explanation:
Given : velocity of the electron = 2.0 10
mass of the electron = 9.19 103
we know that reduced planks constant, h = 6.5821 eV s
We know from uncertainity principle,
= 18931.4 m
Hence, uncertainty in position of the electron is 18931.4
Answer:
a) the object floats
b) the object floats
c) the object sinks
Explanation:
when an object is less dense than in the fluid in which it is immersed, it will float due to its weight and volume characteristics, so to solve this problem we must find the mass and volume of each object in order to calculate the density and compare it with that of water
a)
volumen for a cube
V=L^3
L=1.53in=0.0388m
V=0.0388 ^3=5.8691x10^-5m^3=58.69ml
density=m/v
density=13.5g/58.69ml=0.23 g/ml
The wooden block floats because it is less dense than water
b)
m=111mg=0.111g
density=m/v
density=0.111g/0.296ml=0.375g/ml
the metal paperclip floats because it is less dense than water
c)
V=0.93cups=220.0271ml
m=0.88lb=399.1613g
Density=m/v
density=399.1613/220.027ml=1.8141g/ml
the apple sinks because it is denser than water
Answer:
maximum shear force is 600 lb
Explanation:
given data
long = 15 feet
load = 900 pounds
distance from R = 5 feet
pinned from the load = 10 feet
Reaction R = 300 lbs
Reaction R = 600
solution
we get here moment at point 2 that is
∑M2 = 0
that is express as
R1(15) - 900 (5) = 0
so R1 will be = 300 lb
and
when ∑Fy = 0
so here 300 + R2 - 900 = 0
so R2 = 600 lb
so here maximum shear force is 600 lb
The Tacoma narrows project required a bridge to be buiilt over the columbia river.