When comparing and contrasting EM and mechanical waves, which is true.

A baby and stroller have a total mass of 20. kilograms. A force of 36 newtons keeps the stroller moving in a circular path with a radius of 5.0 meters. Calculate the speed at which the stroller moves around the curve.

Calculate the molar heat of vaporization of a substance given that 0.688 mol of the substance absorbs 52.5 kj of energy when it is vaporized

A bicycle racer sprints near the end of a race to clinch a victory. The racer has an initial velocity of 12.1 m/s and accelerates at the rate of 0.350 m/s2 for 6.07 s. What is his final velocity?

You are on a hike in the mountains. You have 3.79 km left to go before your next campsite. The sun will set in 6.93 h. What average speed must you walk to get to camp at sunset? Answer in units of km/h

How have earthquake data been used to explore the size of convection currents in the mantle?

The earthquake killed about 60 people and was the strongest earthquake to hit

A sailor drops a wrench from the top of a sailboat's vertical mast while the boat is moving rapidly and steadily straight forward.

An eagle carries a fish up 50 m into the sky using 90 n of force. how much work did the eagle do on the fish

Consider a steel guitar string of initial length l=1.00m and cross-sectional area a=0.500mm2. the young's modulus of the steel is y=2.0*1011n/m2.

What is the most advanced life form on earth