2kg of water is heated with a heating coil which draws 3.5ampere from a 200volt mains for 2 min .what is the increase in the temperature of water (specific heat capacity of water =4200jkg-¹k-¹​

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

The total amount of energy contained in an object