In Four-bar chaim ABCD, link Ad is fixed, and the crank AB rotayes clockwise at a constant speed of 10 radians per second .Length of the links are AB=60 mm;BC=CD=70 mm; DA=120 mm. The angle DAB=60 degrees and both B and C lie on the same side of AD 2.1 Draw the displacement diagram of the mechanism taking link AD as horizontal

2.2Use the vector diagram yo calculate angular velocities(magnitude and direction) of BC and CD, and

2.3 angular acceleration of BC and CD

How long must a student wait for feedback on how they did on the accuplacer? a. 1 day b. 1 week c. 1 month d. immediate feedback (no wait)

Explain how you might determine the rate of weathering on a sample rock

Tortoise shells and snail shells are similar in function: they protect the organism from predators. based on a comparison of the organisms in the images, what can you conclude? 1. tortoises and snails have homologous organs, and they’re evolutionarily related. 2. tortoises and snails have homologous organs, and they belong to same species. 3. tortoises and snails have analogous organs, and they belong to the same species. 4. tortoises and snails have analogous organs, and they don’t belong to the same species. 5. tortoises and snails have analogous organs, and they aren’t evolutionarily related.