<span>The answer would be, C. The reactions go to completion</span>
There is a basic difference, because mass is the actual amount of material contained in a body and is measuredin kg, gm, etc. Whereas weight is the force exerted by the gravity on that object mg. Note that mass is independent of everything but weight is different on the earth
c. To increase power, you can increase the amount of work you do in a given amount of time, or you can do a given amount of work in less time.
Explanation:
- Power in physics is defined as the rate of energy is being transferred over a particular time. The rate or amount of energy transfer is the work done to an object whereas it is in a specified time.
- The formula to find the power is
, Hence, to increase the power in a given system either you have to reduce the time by increasing the work or increase the amount of work in the given time.
Answer:
Her average speed was 40 km/h.
Explanation:
Hi there!
The average speed (a.s) is calculated as the traveled distance divided by the time it took to cover that distance:
a.s = d/t
Where:
d = traveled distance.
t = time.
In this case, the odometer reading of the car increased by 12.0 km, which means that the distance traveled is 12.0 km. The time it took the student to cover that distance is 18.0 min (18.0 min · 1 h/60 min = 0.3 h) . Then the average speed will be:
a.s = d/t
a.s = 12.0 km/ 0.3 h
a.s = 40 km/h
Her average speed was 40 km/h.
First, illustrate the problem as shown in the attached picture. Next, let's find the distance traveled by planes A and B after 2.9 h.
Distance of A: 650 m/h * 2.9 h = 1,885 m
Distance of B: 560 m/h * 2.9 h = 1,624 m
Then, we use the cosine law to determine the distance x. The angle should be: 85 - 60.5 = 24.5°
x² = 1,885² + 1,624² - 2(1,885)(1,624)(cos 24.5°)
x = √619381.3183
<em>x = 787 m</em>