John found an insect crawling on the sidewalk. It was 3 cm long. How many millimeters long was it?

A.

3 mm

B.

30 mm

C.

300 mm

D.

3000 mm

2. What must be true about two given objects for energy to be transferred as heat between them? A. The objects must be large B. The objects must be hot. C. The objects must contain a large amount of energy. D.

Sound with frequency 1240 Hz leaves a room through a doorway with a width of 1.13 m. At what minimum angle relative to the centerline perpendicular to the doorway will someone outside the room hear no sound?

Which quantity may be calculated directly using Newtons second law of motion

6) What force should be applied to compress a spring by 0.19 m if its spring constant is k = 140 N/m?

An object with mass m moving in a circle of radius r with speed v has linear momentum of magnitude mv and an angular momentum of magnitude mvr. Is it dimensionally possible to add the magnitudes of linear momentum and angular momentum? a).

Which type of radiation has the lowest penetrating ability?

For which one of the following situations will the path length equal the magnitude of the displacement? a A ball on the end of a string is moving in a vertical circle. b A toy train is traveling around a circular track.

A poem on the body system

How many stars, approximately, are in the solar system?

The ends of a magnet where the force is strongest are magnetic