Explanation:
It is given that,
Mass of a box car,
Initial speed of a box car,
Initial speed of another stationary car is 0 as it was stationary
Mass of another box car is 10,000 kg
Let V is the speed of the cars just after the collision. It is based on the concept of inelastic collision. So, using the conservation of linear momentum we get :
So, the speed of the cars just after the collision is 0.875 m/s.
Answer:
D All
Explanation:
Mechanical and electromagnetic waves both carry energy. The mechanical wave via the motion/vibration of particles, and the electromagnetic via vibration of the electric and magnetic fields.
We know of interference patterns of light (electromagnetic interference), as well as interference of mechanical waves of water generating typical patterns.
Both, electromagnetic and mechanical waves go through the process of reflection when hitting a barrier (mirror for example in the case of light, and a solid wall for example in the case of water waves.
So the correct answer is "All of the above"
Use the Formula PE=mgh to solve for height.
Answer:
The change in volume is
Solution:
As per the question:
Coefficient of linear expansion of Copper,
Initial Temperature, T = = 273 K
Final Temperature, T' = = 273 + 100 = 373 K
Now,
Initial Volume of the block, V =
where
V' = Final volume
<h2>If the object is moving then it has kinetic energy</h2>