Luke pulls a sled using a force of 65 N for a distance of 25 m across level ground. The rope Luke pulls forms an angle of 25° with the ground. About how much work does Luke do on the sled? 250 J 690 J 1,500 J 1,600 J

Which statement best describes why an island food web could be considered a closed system? A) Energy flows freely into and out of the island food web. B) Energy enters and exits the system, matter does not.

Where are ribosomes made?

A simple harmonic oscillator takes 13.5 s to undergo five complete vibrations. Find the period of its motion. Answer in units of s.

Electric charges produce electric fields. When electric charges flow, electric current is produced and this produces magnetic fields. Electromagnetic waves are produced when A) electric and magnetic fields interact.

What has thermal, chemical, and electrical energy

a car slows down from 22 m/s to 3 m/s at a constant rate of 3.5 m/s squared. how many seconds are required before the car is traveling at 3 m/s?

An AC generator has 80 rectangular loops on its armature. Each loop is 12 cm long and 8 cm wide. The armature rotates at 1200 rpm about an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.

How fast would the moon need to travel in order to escape the gravitational pull of Earth, if Earth has a mass of 5.98 X 1024 kg and the distance from Earth to the moon is 3.84 x 108 m?

6. A technlclan can be electrocuted when working on HEVs or EVs. A) O True B) O False

You light a light bulb with a 1.5 volt battery. if the bulb has a resistance of 10 ohms, how much current is flowing?