A note on a piano vibrates 262 times per second. What is the period of the wave?

A machine uses an input force of 200 newton to produce an output force of 800 newton. What is the mechanical advantage of this machine

A 50kg skater at rest on a frictionless rink throws a 2kg ball, giving the ball a velocity of 10m/s. Which statement describes the skaters subsequent motion?

A closely wound rectangular coil of 80 turns has dimensions 25.0 cm by 40.0 cm. the plane of the coil is rotated from a position in which it makes an angle of 37.0 degrees with a magnetic field of 1.10 t to a position perpendicular to the field.

What factors have caused Earth to evolve over geologic time?

2. A force of 24x10² N exists between a positive charge of 8x10-5C and a positive charge of 3x10C. What distance separates the charges?

Using a cathode ray tube, Thomson confirmed that atoms must have an overall positive charge. atoms are made of particles that have a negative charge. electrons in atoms must have varying amounts of energy. electrons are only found in the nucleus.

A ball is rolled along the inside of a partial hoop lying flat on a table. which path will the ball follow when it gets to the end of the hoop?

What pattern of material movement found in the Earth system tracks how an element moves from living to nonliving parts? a. rock cycle b. calcium cycle c. carbon cycle d. none of the above

Why is the monolith el capitan in yosemite national park more resistant to erosion than other igneous plutons in the park?

Block A weighs 1.20 N and block Bweighs 3.60 N. The coefficient of kinetic frictionbetween all surfaces is 0.300.