Answer:
-730KJ
Explanation:
According to the first law of thermodynamics;
Let the total energy of the system be ∆E
Let heat be q and let work the w
Since the energy decreases ∆E is negative
Since work is done on the system w= positive
So;
- 250 = 480 + q
q = -250 - 480
q=-730KJ
Very reluctant to have any extra weight on his plane when he attempted his solo transatlantic flight, Charles Lindbergh
Explanation:
““Very reluctant” appropriately modifies the subject of the Equal clause Charles Lindbergh.
Nevertheless, Charles Lindberg addresses the sentence in the question. And claim that, "It was... the justification and be reluctant" renders Lindberg's hesitation rather than Lindberg himself immune to the judgment.
In comparison to sounding wordy, this structure deliberately undermines the essence of the expression by moving the emphasis to a tangential topic.
Answer:
A statement of the form “If A, then B” asserts that if A is true, then B must be true also. If the statement “If A, then B” is true, you can regard it as a promise that whenever the A is true, then B is true also.
I HOPE IT'S HELP.......
Friction... Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force
Means it will keep going until acted on by an outside force, in this case friction
Answer:
<h2>
t = 2.35s</h2>
Explanation:
Using one of the equation of motion expressed as v = u+at where;
v is the final velocity = 2.0m/s
u is the initial velocity = 25m/s
a is the acceleration = -a (since the acceleration is negative)
t is the time taken
Substituting the given parameters into the formula above;
2.0 = 25-9.81t
subtract 25 from both sides
2.0 - 25 = 25-9.81t - 25
-23 = -9.81t
Divide both sides by -9.81
-23/-9.81 = -9.81t/-9.81
t = 23.0/9.81
t = 2.35s
<em>Hence it took the car 2.35s to slow to a final velocity of 2.0 m/s</em>
