Only two forces acts on the traffic light: the tension T of the cable (upward) and the weight of the traffic light (downward). The weight is
If the traffic light is at equilibrium, the resultant of the two forces must be equal to zero (Netwon's second law):
Therefore the tension of the cable is
Answer:
Explanation:
From the question we are told that
Mass of of automobile M= 1500 kg
Generally the equation of the uncertainty principle is given by
Generally the uncertainty in velocity is mathematically given by
Therefore the minimum uncertainty in the velocity (in miles per hour)
Answer:
The statement is true
Explanation:
The complete question is
Light bends when it changes the medium because the dielectric permittivity of the material makes the path more hard to penetrate
True or False
Solution
The given statement is true as it is the dielectric permittivity of the material which does not allow light to pass through it easily.
The medium decrease the amplitude of light and hence induces change in direction without altering its velocity or frequency.
Answer:
149.34 Giga meter is the distance d from the center of the sun at which a particle experiences equal attractions from the earth and the sun.
Explanation:
Mass of earth = m =
Mass of Sun = M = 333,000 m
Distance between Earth and Sun = r = 149.6 gm = 1.496\times 10^{11} m[/tex]
1 giga meter =
Let the mass of the particle be m' which x distance from Sun.
Distance of the particle from Earth = (r-x)
Force between Sun and particle:
Force between Sun and particle:
Force on particle is equal:
F = F'
= ±577.06
Case 1:
x =
Acceptable as the particle will lie in between the straight line joining Earth and Sun.
Case 2:
x =
Not acceptable as the particle will lie beyond on line extending straight from the Earth and Sun.
Answer:
qualitative observations.
Explanation:
In a qualitative observation, the data that is dealt with is one that has to do with the sense of touch, sight, smell, taste and also hearing. This type of observation does not have anything to do with measurements that involves numbers. Examples of qualitative observation includes shapes, color, gender, citizenship.