An example would be a pot on a stove. The radiation from the source of the heat (the stove) would make the handle hot by conduction from heat through contact.
Another example could be a metal spoon in a hot cup of coffee. The coffee itself is hot, but since the spoon is in the coffee and making contact, part of the spoon will become hot from the radiation of the source of heat (the hot coffee). Thus, conduction.
when velocity and time both are constant and when velocity will decrease the acceleration will be negative
Answer:
The Electric field will be 225.92 N/C
Explanation:
Given :
- Radius of the hollow sphere R=42.8 cm
- Initial charge on the conducting sphere is

- Magnitude of the point charge

We know that the flux of the electric field through a close surface cab be calculated by using Gauss Law which is

Hence the Electric Field is calculated.
The answer founded out by you seems to be correct and very close to the exact answer and the concept you have used in your answer is also correct.
1. Jumping off a building
2. Hitting a tennis ball
3. Swinging a bucket of water in a circle