<span>Both objects receive the same impulse.</span>
Answer:
Approximately
for the train from Boston to NYC Penn Station.
Approximately
for the train from NYC Penn Station to Boston.
Explanation:
Convert minutes to hours:
.
.
Calculate average speed of each train:
.

Assume that it takes a time period of
for the trains to pass by each other after departure. Distance each train travelled would be:
.
.
Since the trains have just passed by each other, the sum of the two distances should be equal to the distance between the stations:
.
Rearrange and solve for
:
.
.
Distance each train travelled in
:
.
.
Answer:
Visible light
Explanation:
Electromagnetic spectrum is the classification of the electromagnetic waves based on their frequency and wavelength. In order from the shortest to the longest wavelength, we have
Gamma rays
X-rays
Ultraviolet
Visible light
Infrared radiation
Microwaves
Radio waves
All these waves are invisible to human eye, except for the visible light part. Visible light is perceived as a different color by the human eye, depending on the wavelength of the light. In particular, we have:
Violet: 380 - 450 nm
Blue: 450 - 495 nm
Green: 495 - 570 nm
Yellow: 570 nm - 590 nm
Orange: 590 nm - 620 nm
Red: 620 nm - 750 nm
Answer:
(I). The initial rotation rate is 4.29 rad/s.
(II). The revolutions is 3932.
Explanation:
Given that,
Time = 1.6 h
Angular velocity = 41 rpm
(I). We need to calculate the initial rotation rate in rad/s



(II). We need to calculate the revolutions
Using formula of revolutions





Hence, (I). The initial rotation rate is 4.293 rad/s.
(II). The revolutions is 3932.