A pipe in Holland springs a leak through a hole of area 1cm squared at a depth of 2m below the water surface. How much force must a boy apply to the hole with his thumb to stop the leak? (Hint: convert the area from squared cm to squared meters before solving the problem).

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?