What are the requirements for an inertial frame of reference?

This diver has just jumped up from the end of the diving board. After she dives down and is falling toward the water, she’ll have kinetic energy, or the energy of moving matter. But even as she is momentarily stopped high above the water, she has energy. Do you know why?

A device that conveys information with analog signals and digital signals is called _____.a) an electron device

b) an electrical device

c) an electric device

d) an electronic device

An ice skater applies a horizontal force to a20.-kilogram block on frictionless, level ice,
causing the block to accelerate uniformly at
1.4 meters per second2 to the right. After the
skater stops pushing the block, it slides onto a
region of ice that is covered with a thin layer
of sand. The coefficient of kinetic friction
between the block and the sand-covered ice is
0.28.

On the diagram in your answer booklet, starting
at point A, draw a vector to represent the force
applied to the block by the skater. Begin the
vector at point A and use a scale of
1.0 centimeter = 5.0 newtons.

Nicholas sends 20.0 minutes ironing shirts with his 1800-watt irn . How many joules of energy were usedby the iron

Which type of galaxy has arms that contain sites of active star formation and start close to a bulge in the center?A. elliptical
B. irregular
C. barred spiral
D. normal spiral

Which would be an example of biopsychology?                                                                 A.A psychiatrist prescribes medication for depression.                                                      B.A psychiatrist asks the patient how he deals with conflict.                                             C.A psychiatrist has the patient do a journal about his experiences.                                   D.A psychiatrist has the patient tell him about his childhood.