When all parts of a circuit are composed of conducting materials, the circuit is said to be

a. closed.

b. open.

c. parallel.

d. shorted.

7. What do mechanical waves require in order to transfer energy?

A star has a spectrum shift exhibiting a red shift. What can you conclude about the distance from earth to that star

A solenoid is built with 870 turns uniformly distributed over a length of 0.390 m to produce a magnetic field of magnitude 1.00 * 10-4 T at its center. What is current necessary for this to happen? 17.4 mA 35.7 mA 74.9 mA

3. A 2,000-kilogram car uses a braking force of 12,000 newtons to stop in 5 seconds. a. What impulse acts on the car? b. What is the change in momentum of the car? c. What is the initial speed of the car?

An archer wants to hit a target that is dropped from a tower. At the sound of a horn, the archer is to shoot an arrow; at the same instant, the target will be dropped.

Which of the following is created by fans? a) Air flow b) Water flow c) Wastewater flow d) Vacuum flow

What are 3 wether instuerments i know anemometer and barometer but the third one and what there job! wlep

Moving 4.0 coulombs of charge through a circuit requires 48 joules of electric energy. What is the potential difference across this circuit? (1) 190 V (3) 12 V (2) 48 V (4) 4.0 V

North poles of magnets attract each other. true or false

An unstable particle is created in the upper atmosphere from a cosmic ray and travels straight down toward the surface of the earth with a speed of 0.99537 c relative to the earth.