Assignment: Ch. 2 L. 3 Review Question 6 of 10
Nikhil bought a large plant in a planter for his mother. He took it home and pushed it around his
living room until he found a good location for it near the window. After he watered the plant, he
was very surprised how difficult it was to push the planter. Based on Newton's second law, the
planter is more difficult to move. Using Newton's 2nd Law of Motion, choose the one statement
that does NOT apply.
(1 point)
A. With the water, the planter had more mass and more inertia.
B. Nikhil had to apply more force to produce the same acceleration.
C. Increased inertia mea that less force is needed to move the planter.
D. If Nikhil used the same amount of force, the acceleration of the moving planter would be less after adding the water.

For problems 1-3, consider a simple dc brush motor with a permanent magnet stator. with an an consider a simple dc brush motor with a permanent magnet ae supply voltage of 100 v, the no-load speed of the motor is 1000 rpm. this motor can provide a torque of 1.9 n-m at 800 rpm drawing a current of 2 a current are both zero at no load.) 1. with an armature supply voltage of 100 v, the motor is operated at 900 rpm. what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input? what is the energy efficiency of the motor? with an armature supply voltage of 100 v, the motor is operated at 1100 rpm (where it acts as a generator). what torque input is required? what mechanical power is required what current is generated? what is the electrical power generated? what is the energy efficiency of the motor acting as a generator? 2. with an armature supply voltage raised to 120 v, the motor is operated at 1000 rpm. what is the no-load speed? what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input what is the energy efficiency of the motor? 3.

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive