Which of these can be considered a system?

a computer

a car

a bicycle pedal

a pencil

a coffeemaker

Which of the following depend upon the amount of matter in an object? Only its mass Only its weight Both its mass and its weight Neither its mass nor its weight

A student walks 3 miles west and then 4 miles south to get to school the student displacement was

A proton has an initial speed of 3.7*10^5 m/s. a) What potential difference is required to bring the proton to rest? (V) b) What potential difference is required to reduce the initial speed of the proton by a factor of 2?

A 119 turn119 turn circular coil of radius 2.47 cm2.47 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Over an interval of 0.167 s0.167 s, the magnetic field strength increases from 57.9 mT57.9 mT to 96.

Which of these stars has the coolest surface temperature? A. A starB. F starC. G starD. K star

What are the steps that produce electricity from this fuel

Adrian read about a new antimicrobial in a popular magazine. The advertisement claimed that the product Bactokil prevents bacterial growth. So, Adrian conducted a controlled experiment to test the product claims.

A world-class sprinter can burst out of the blocks to essentially top speed (of about 11.5 m/s) in the first 15.0 m of the race. what is the average acceleration of this sprinter, and how long does it take her to reach that speed?

How are primary and secondary succession similar and how are they different?

What relates the net force exerted on an object to its mass and acceleration?