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A ladder stands on the ground, leaning against a wall. Would you feel safer climbing up the ladder if you were told that the ground is frictionless but the wall is rough or if you were told that the wall is frictionless but the ground is rough? Hint: Draw the free body diagram of the situation. Record your answer with your reasoning to your scratch paper. Make sure to submit it to Gradescope at the end of the exam. (10 points) 

If a simple pendulum is undergoing simple harmonic motion and its length is doubled, what happens to the frequency of its motion? Answer and explain in your scratch paper. (10 points)

Ahmal and Tiara say goodbye to each other. Ahmal walks a distance L = 3.0 m at an angle θ = 30◦ north of East, while Tiara walks a distance D = 5.0 m directly south. (a) Draw the displacement vectors of Ahmal and Tiara. (5 points) (b) Find the distance d between them after they each complete their walks. (15 points) Show your work and answer in the scratch paper. (20 points)

When you push on a box with a 200 N force instead of a 50 N force, you can feel that you are making a greater effort. When a table exerts a 200 N normal force instead of one of smaller magnitude, is the table doing anything differently? Record your answer with your reasoning to your scratch paper. Make sure to submit it to Gradescope at the end of the exam. (10 points) 

Two vectors A⇀{“version”:”1.1″,”math”:”A⇀”} and B⇀{“version”:”1.1″,”math”:”B⇀”}  have precisely equal magnitudes. For the magnitude of A⇀ + B⇀{“version”:”1.1″,”math”:”A⇀ + B⇀”} to be 100 times larger than the magnitude of A⇀ – B⇀{“version”:”1.1″,”math”:”A⇀ - B⇀”}, what must be the angle between them?  Show your work and answer in the scratch paper. (15 points)

If the average velocity of an object is zero in some time interval, what can you say about the object’s displacement for that interval? Explain. Record your answer with your reasoning to your scratch paper. Make sure to submit it to Gradescope at the end of the exam.  (10 points) 

A 2-year-old child who has sickle cell anemia (SCA) comes to the clinic with a cough and a fever of 101.5°C. The child currently takes penicillin V prophylaxis 125 mg orally twice daily. What will the primary care pediatric nurse practitioner do?

A 2-year-old child has an acute diarrheal illness. The child is afebrile and, with oral rehydration measures, has remained well hydrated. The parent asks what can be done to help shorten the course of this illness. What will the primary care pediatric nurse practitioner recommend?

Which of the following is a left to right shunting defect?

An infant with known congenital heart disease presents with weight loss, tachypnea and hepatomegaly. The infant is currently receiving breastmilk via bottle and is eating well. What intervention should the nurse practitioner recommend?