You are holding a finishing sander with your right hand. The sander has a flywheel which spins counterclockwise as seen from behind the handle. You are sanding a wall in front of you
As you turn the sander towards the right, you feel a tendency in the sander to A) turn towards the left.
B) turn upward.
C) turn downward.
D) push toward you.
E) pull away from you.
C
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A navigational beacon in deep space broadcasts at a radio frequency of 50 MHz. A spaceship approaches the beacon with a relative velocity of 0.40c. The spaceship passes the beacon and departs from it with a DIFFERENT relative velocity
The beacon signal is now detected at a frequency of 40 MHz. What is the new velocity of the spaceship relative to the beacon? A) 0.24c B) 0.28c C) 0.26c D) 0.20c E) 0.22c
A 4000-? resistor is connected across a 220-V power source. What is the current through the resistor?
A) 0.055 A B) 1.8 A C) 5.5 A D) 18 A
A(n) _______________ is an object that orbits the Sun and is spherical, but not large enough to have the gravitational influence to clear away remaining objects orbiting nearby
Fill in the blank(s) with correct word
Which of the following characteristics are held in common by both gravitational and electrostatic forces when dealing with either point masses or charges?
a. inverse square distance law applies b. forces are conservative c. potential energy is a function of distance of separation d. all of the above choices are valid