The plane has a centripetal acceleration <em>a</em> of
<em>a</em> = <em>v</em> ²/<em>r</em>
where <em>v</em> is the plane's tangential speed and <em>r</em> is the radius of the circle. By Newton's second law,
<em>F</em> = <em>mv</em> ²/<em>r</em>
Solve for the mass <em>m</em> :
<em>m</em> = <em>Fr</em>/<em>v</em> ² = (3000 N) (18.3 m) / (55.0 m/s)² ≈ 18.1 kg
Well, the relationship between the net force and mass and acceleration of an object are directly related, as per the equation - Fnet = ma.
Thus the solution is A. As the net force of an object decreases, the object's acceleration also decreases, mass is kept constant.
Answer:
A. 216.36 
B. 96.56
Explanation:
Let 
be the distance in first part.
= velocity × time
= 85 × 
= 49.58 km
Let 
be the distance in first part.
= 130 km
Average velocity = 
When second leg of the trip is
A. Toward north
Average velocity = ![\frac{[tex] s_{1} + s_{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%5Btex%5D%20s_%7B1%7D%20%2B%20s_%7B2%7D%20%20%20)
}{Total time} [/tex]
Average velocity = 
Average velocity =216.36
B. Toward south
Average velocity = ![\frac{[tex] s_{1} - s_{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%5Btex%5D%20s_%7B1%7D%20-%20s_%7B2%7D%20%20%20)
}{Total time} [/tex]
Average velocity = 
Average velocity =96.56
Answer
Explanation:
radiaton is used from bombs but radiation and to cure cancer it is a toxic gas that if you smell it you can die
Rock is completely immersed in hot water. By the second law of thermodynamics, thermal energy or heat is transferred from substance with higher temperature to substance with lower temperature until they come to thermal equilibrium i.e. both at same temperature.
It is given here that rock is at 20°C which is at lower temperature than water at 80°C. ∴Heat or thermal energy flows from water to rock. So, right choice is-
A. The water gives the rock thermal energy and gets no thermal energy in return.
