It is TRUE, Force is proportional to the product of the masses and inversely proportional to the square of the distance between them.
Answer:
<h2><em><u>C. It must reflect red light wavel</u></em></h2>
Explanation:
<em>The color of the object is reflected by the object other colors are absorbed by the object.</em>
Here <em>object appears in red color so red color is reflected by the object and other colors are absorbed.</em>
Answer 4,520 feet
Explanation
The light and the sound were produced at the same time but sound took long to reach since is speed is much lower than the speed of light.
Speed is the rate of change of distance. So;
Distance = speed × time = 1130 × 4 = 4,520 feet.
Answer:

Explanation:
As per the formula of thermal expansion we know that

so here we will have



so here change in the length of the rod is given as




Answer
given,
mass of the shuffleboard disk = 0.42 kg
speed of the cue is increased to = 4.2 m/s
acceleration takes over 2 m then acceleration is zero.
the disk additionally slide to 12 m
final speed of disk = 0 m/s
a) increase in thermal energy



b) 
F_f is the frictional force


increase in thermal energy for entire movement of 14 m


c) Work done on the disk by the cue



W = 3.704 + 0.616
W = 4.32 J