Terrence claims that a new species of bacteria should be placed on the list of bacteria that cause infectious diseases. he ran his experiment several times in one day and got the same results. ben and frieda also ran his experiment multiple times themselves. they never got the same results that terrence did. what does this indicate about the claim? it is invalid because it could not stand up to experimentation. it is valid because only one person needs to validate it. it is valid because he did the experiment multiple times. it is invalid because bacteria are always changing.

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?