Answer:
C
Explanation:
When the planet is closest to the Sun, speed v and kinetic energy are the highest, and gravitational potential energy is the lowest.
Answer:
plane speed: 525mph, jetstream speed=75mph, in explanation it is solved with a linear equations system
Explanation:
First lets name each speed
vs:=speed of the jetstream
vp:=speed of the plane
Now when in the jetstream direction the speeds are added and on the opposite direction are subtracted, then we get these equations, that are linear.
1800 mi=(vp+vs)*3h
1800 mi=(vp-vs)*4h
which is a linear equation system equivalent to:
600 mph=vp+vs (1)
450 mph=vp-vs (2)
Now from (2) vp= 450mph+vs (3), replacing this in (1) we get:
600mph=(450mph+vs)+vs=450mph+2*vs, then 2*vs=150mph or vs=*75mph, this is the jetstream speed, replacing this in (3) we get the plane speed too vp=450 mph +75mph = 525 mph
I cant really say but i believe it is called extinction
Answer:
168 m^2, 380 m^2
Explanation:
length of the room, l = 9.72 m
width of the room, b = 17.30 m
Area of teh rectangle is given by
A = length x width
So, A = 9.72 x 17.30 = 168.156 m^2
the significant digits should be 3 in the final answer
So, A = 168 m^2
Now length = 72 m
width = 17.39 feet = 5.3 m
Area, A = 72 x 5.3 = 381.6 m^2
There should be two significant digits in the answer so, by rounding off
A = 380 m^2
Answer:
I would recommend placing something on the ground or on the walls of your gym to damped the echos.
Explanation:
