Afarmer pulls on his obstinate mule with 250 n of force to the right. the ground exerts a reaction force to the mule’s resistance of 250 n to the left. what is the net force on the mule system? what is the mule’s acceleration?

Which statement best describes who the period and frequency of electromagnetic was change between gamma rays and microwaves? a) the period and frequency stay the same. b) the period increases and the frequency decreases. c) the period decreases and the frequency increases. d) the period increases and the frequency increases.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?