What happens to the mass of the substance when undergoing a physical change

What will the angle of refraction be for a ray of light passing from air into a sodium chloride crystal if the angle of incidence is 60.0°? The index of refraction of sodium chloride is 1.53. A. 13° B. 22° C. 34° D. 42° E. 48°

Which stage follows the red giant stage of star development, if the star is a high-mass star

What does Influence mean

A fan is a complex machine? True or false?

How much power does it take to do 360 j of work in 18 seconds?

A bird has a kinetic energy of 3 J and a potential energy of 25 J. What is the mechanical energy of the bird?

Material A has a higher thermal conductivity than Material B. Which material will transfer energy by conduction faster?

an electrical iron box having power 400w is operated in 10hours. what will be the energy consumed by the device in commercial unit?

True or False: If your gas pedal jams, you should turn the key to lock to lock the steering wheel.

Pylon cables in the National Grid have some resistance. Power (watts) = Current2 (amperes) x Resistance (ohms) Looking at the power equation above, can you explain why transmitting electricity at a very high voltage is beneficial?