The chart shows data for four moving objects.

Object

Final Velocity

(m/s)

29

Change in

Time (s)

Initial Velocity

(m/s)

11

10

12

20

W

X

Y

IZ

Which object has the greatest acceleration?

34

Ow

OZ

In an energy pyramid, the total energy available for consumption from one trophic level to the next one it is A. reduced B. Conserved C. multiplied D. Evenly distributed

A _ increases it decreases voltage in a power line A. Motor B. Generator C. Ammeter D. Transformer

An airplane pilot fell 380 m after jumping from an aircraft without his parachute opening. He landed in a snowbank, creating a crater 1.0 m deep, but survived with only minor injuries.

A wagon full of manure accidentally rolls down a driveway for 5.0m while a person pushes against the wagon with a force of 420 N to bring it to a stop. What is the change in kinetic energy for the wagon?

Mechanical energy is a) the sum of kinetic, potential, thermal, and elastic energy. b) the energy of motion. c) the energy due to internal moving parts. d) the sum of kinetic energy plus potential energy. the energy of position.

A wire carries a steady current of 2.20 A. A straight section of the wire is 0.750 m long and lies along the y axis within a uniform magnetic field, vector B = 1.70 k T.

All parts of the electromagnetic spectrum share travel at the same speed through empty space. True False

What is the mechanical advantage of the frictionless plane shown below? Inclined plane A. 0.64 B. 1.31 C. 1.4 D. 1.56

What does ice become when it absorbs enough heat energy. C. Frost. D. Liquid

Steam enters an adiabatic turbine steadily at 3 mpa and 400°c and leaves at 50 kpa and 100°c. if the power output of the turbine is 2 mw, determine (a) the isentropic efficiency of the turbine and (b) the mass flow rate of the steam flowing through