15x 9.8 x .3 = 44.1
15 x 9.8 x 1 = 147
147 - 44.1 = 102.9J
102.9 J
Question 1
To find centripetal acceleration, use the formula : centripetal acceleration = v^2/r
so answer would be (3.71)^2/42.85=0.32 (2d.p.)
Question 2
Force =ma
a= (9.98)^2/31.77=3.1350
Force= 3.1350 * 56.63 = 177.54 (2 d.p.)
Answer:
An intensive property is a bulk property, meaning that it is a physical property of a system that does not depend on the system size or the amount of material in the system. Examples of intensive properties include temperature, refractive index, density, and hardness of an object.
Answer:
The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars. After an asteroid belt comes the outer planets, Jupiter, Saturn, Uranus and Neptune
Explanation:
- 187.237 km/hr fast is θ changing 12 min after the plane passes over the radar station
<u>Explanation:</u>
Let the distance x and angle θ be defined as in the figure below. Then

Now, differentiate with respect to t, we get

Now, calculate the travel distance from radar station to plane after 12min
Distance, 
Substituting ‘x’ value, we get

Find the rate of change of theta after 12 min,

We know, the formula for,

So, then, 




When express the value in km/he, we get, the change in theta as
