Answer:
<u>Resultant</u><u> </u><u>force</u><u> </u><u>is</u><u> </u><u>2</u><u>0</u><u> </u><u>N</u>
Explanation:
Resolving vertically:
Resolving horizontally:
Resultant force:
That would be the independent variable.
Dependent variable changes according to the independent variable
I honestly don’t know about graphing and stable variables never heard of it before
Answer:
The distance traveled by car before stopping is
Explanation:
Given
Initial speed of car
Final speed of the car
Acceleration of the car
Let distance traveled before stopping be s
Using equation of motion
=>
=>
Thus the distance traveled by car before stopping is
Answer:
ambulance speed is 30.38 m/s
Explanation:
given data
hear frequency = 510 Hz
pass frequency = 427 Hz
speed of sound = 343 m/s
to find out
ambulance speed
solution
we consider here ambulance speed is v
so when we hear frequency velocity equation will be
510 = 343f / ( 343 - v ) ...........................1
and when ambulance pass velocity equation will be
427 = 343f / ( 343 + v ) ...........................2
so from equation 1 and equation 2
= 510 / 427
= 510 / 427
solve it we get
v = 30.38 m/s
so ambulance speed is 30.38 m/s
Power = energy / time
Time should be in seconds
5 hours = 5 × 60 minutes = 5 × 60 ×60 seconds = 18000 s
Power = 6000/18000 = 0.333 W
Hope it helped!