Which materials are composed of proteins, providing high tensile strength? polymers ceramics metals woods

Abby throws a ball straight up and times it. she sees that the ball goes by the top of a flagpole after 0.50 s and reaches the level of the top of the pole after a total elapsed time of 4.10 s.

What is the tendency of an object to resist a change in motion

A fish appears to be 3 m below the surface of a pond when viewed almost directly above by a fisherman. What is the actual depth of the fish? (n water = 1.

A child in about those 85.15 kg package out horizontally with a speed of 10 m/s the mass of the child is 27.2 kg in the mass of the ball is very 3.8 kg calculate the velocity of the ball immediately after assuming it was initially at rest

A current in a wire increases from 2 A to 6 A. How will the magnetic field 0.01 m from the wire change?

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

How do power plants generate electricity?

How much work would it take to move a coulomb charge across a 4 volt potential difference?