What is the maximum height to which a motor

having a power rating of 20.4 watts can lift a

5.00-kilogram stone vertically in 10.0 seconds?

(1) 0.0416 m (3) 4.16 m

(2) 0.408 m (4) 40.8 m

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?