While online last week, you saw the following advertisement: how strong are the claims made by the advertisement? a. the claims are based on sound evidence and are likely to be accurate. they are strong claims. b. the claims are not plausible and are likely to be pseudoscientific. they are not particularly strong. c. the claims are clearly unbiased and accurate. they are based on strong scientific evidence. d. the claims are based on empirical evidence and are likely to be pseudoscientific. they are not particularly strong.

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

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?

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.