Rec F industry certification

Which part of the robotic arm swivels the gripper?

• upper arm

• elbow

• wrist

• lower arm

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

composite materials are lighter and much less expensive than more traditional materials such as steel and plastics.

• true

• false

Tags

NGSS.MS-PS1-3

What is the total gear ratio?

• 1:2

• 2:1

• 1:3

• 3:1

What is the total gear ratio and final direction?

• 1:2, counterclockwise

• 2:1 clockwise

• 1:2 clockwise

• 2:1 counterclockwise

Tags

NGSS.MS-PS2-2

a holonomic drive train has how many degrees of freedom

• 4

• 6

• 2

• 3

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

convert 400 K to farenheit

• 354

• 187

• 203

• 261

Mr. Smith rode his bike 1500 miles he has a spare to switch out the tires, so they'd all get even wear. How many miles did each tire get

• 750

• 500

• 1000

• 1200

The purpose of a thermal system is to maintain a desired temperature in a(n):

• open area

• boundary layer

• along a distance

• confined space

Tags

NGSS.MS-PS3-3

Adjustments can be made to a closer tolerance when the belt sander is running.

• true

• false

wood veneers are used to:

• make plywood

• create thin wood laminates to cover less expensive woods

• save money on hardwoods

• both a and b