Answer:
4°C
Explanation:
Water is densest at 4°C. Since dense water sinks, the bottom of the lake will be 4°C.
Answer:
Explanation:
Give it that,
Initial velocity
u = 22m/s
Deceleration a = - 0.15m/s2
Time taken to travel a station long of 210m
Using equation of motion
Let know the final velocity, when it leaves the station
v² = u²+2as
v² = 22²+2×(-0.15)×210
v² = 484—63
v² = 421
v =√421
v = 20.52m/s
Then,
Using equation of motion to find time taken
v = u + at
20.52 = 22 +(-0.15)t
20.52-22 = -0.15t
-0.15t = -1.48
t = -1.48/-0.15
t = 9.88 sec
Answer:
The distance is
Explanation:
From the question we are told that
The focal length is
Generally the lens equation is mathematically represented as
At image distance u = 1.5 m
=>
=>
At image distance
=>
=>
The distance the lens need to move is evaluate as
The force of gravity is stronger on Earth than it is on the planet mars. If an astronaut travels to Mars, what will happen to her mass when she arrives?
D. The mass of the astronaut will stay the same as it is on Earth.
Hopefully this will help you.