What statement best illustrates vibrational motion?

A. a racecar driver speeding around a track

B. a model walking down a runway

C. a cello playing music at the concert

D. a ballerina twirling in place

Darwin's explanation for why different species exist is best described as a (n)

A carnival ride has a 2.0m radius and rotates once each. 90s. Find the centripetal acceleration

A force of 5000 n is applied outwardly to each end of a 5.0-m long rod with a radius of 34.0 mm and a young's modulus of 125 x 108 n/m2. the elongation of the rod is:

Which happens to the magnetic field of a wire when you change the direction of the current in the wire? It becomes stronger. It becomes weaker. It changes direction too. It stays the same.

Why are experiments often performed in laboratories? O A. They are better at representing the real world. O B. There are fewer variables to control. C. Scientists only want to know what happens in labs. O D.

Why would a person choose to tie a helium-filled balloon to a child's wrist instead of simply having the child hold on to it? A. Helium is less dense than air, so it will float above air if the child lets go of the balloon. B.

What process is the method by which a neutral object obtains an electrical charge?

Which of the following examples is most like a non-explosive eruption? Squeezing a ... A: Medium-sized rock B: Sponge soaked in water C: A raw egg D: Water balloon

Which would be best categorized as heat transfer by conduction

Obtain expressions in component form for the position vectors having the following polar coordinates: (a) 12.8 m, 150° (b) 3.30 cm, 60.0° (c) 22.0 in., 215°.