The answer & explanation for this question is given in the attachment below.
Answer: the sample of solid has less energy than the sample of gas
Explanation:
APEX
Answer:
An object changes position if it moves relative to a reference point. The change in position is determined by the distance and direction of an object's change in position from the starting point (displacement). Direction • Direction is the line, or path along which something is moving, pointing, or aiming.
Explanation:
Answer:
28.3 m/s
Explanation:
From the question given above, the following data were obtained:
Angle of projection (θ) = 30°
Maximum height (H) = 10 m
Acceleration due to gravity (g) = 10 m/s²
Initial velocity (u) =?
Thus, we can obtain the minimum velocity cannon ball by using the following formula:
H = u²Sine² θ / 2g
10 = u² × (Sine 30)² / 2× 10
10 = u² × (0.5)² / 20
10 = u² × 0.25 / 20
10 = u² × 0.0125
Divide both side by 0.0125
u² = 10/ 0.0125
u² = 800
Take the square root of both side
u = √800
u = 28.3 m/s
Therefore, the minimum speed of the cannon ball is 28.3 m/s
Answer:
1440 W
Explanation:
First of all, we can find the total displacement of the sled, which is given by
where
a = 0.08 m/s^2 is the acceleration
t = 1 min = 60 s is the time
Substituting,
Now we can find the wotk done on the sled, equal to the product between force and displacement:
And finally we can fidn the average power, which is the ratio between the work done and the time taken:
