The theory of plate tectonics developed in part from an earlier hypothesis about how continents move. What is the name of this earlier hypothesis?

A.

continental drift

B.

earthquake development

C.

natural selection

D.

evolution

A body weighs 10newton in air and 9.5 in water. How will it weigh in alchohol if density 0.8gcm-³

What are the two things we need in order to solve for wave speed?

How does brown algae move

Why are there more lines in the sun's spectrum than in the hydrogen spectrum?

In which sound wave application are sound waves absorbed? - echolocation - ultrasonic cleaners - ultrasound imaging

What might motivate someone to study forensics

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to five times her weight as she goes through the dip. If r = 17.

A mass spectrometer accelerates doubly ionized atoms of charge 2e over a potential difference V before they enter a uniform magnetic field B which is perpendicular to the direction of motion of the ions.

A rotating water pump works by taking water in at one side of a rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120 m starts from rest and accelerates at 30.

Which describes a property shared by ultraviolet light and X-rays? A They are both transverse waves. B They share the same wavelength. C They contain less energy than visible light. D They both require a medium to travel through.