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Free NEX Nursing Entrance Prep PDF with 30 questions
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The PDF includes 30 NEX Nursing Entrance Prep questions with answers and explanations.
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Q1Determine the acceleration of a car traveling in a straight line when its speed increases from 0 to 50 meters per second in 6 seconds.
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✓ Correct answer: 8.3 m/s2
To solve this problem, use the Acceleration formula. Acceleration = change in velocity ÷ time taken The car's initial speed is 0, and it reaches 50 m/s, resulting in a change in velocity of: 50 - 0 = 50 m/s It takes the car 6 seconds to reach the speed of 50 m/s, so the time taken is 6 s. Substitute these values into the acceleration formula: acceleration = 50 m/s ÷ 6 s acceleration = 8.3 m/s2
Q2A solid 600-g concrete block is struck by a 50-g rubber ball traveling at 1.75 m/sec. If the ball bounces backward off the block at 0.9 m/sec, what will be the speed of the concrete block?
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✓ Correct answer: 0.07 m/sec
To find the speed of the concrete block (v2), use the momentum equation (m1v1 + m2v2 = m1v1 + m2v2). v2 = (m1v1 + m2v2 – m1v1) / m2 Where the rubber ball is m1, the concrete block is m2, and the initial velocity of the concrete block is 0. v2 = [(50 g x 1.75 m/sec) + (600 g x 0 m/sec) – (50 g x 0.9 m/sec)] / 600 g v2 = 0.07 m/sec
Q3A certain element has 45 protons and an atomic mass of 64. What is its atomic number?
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✓ Correct answer: 45
The atomic number of an element is equal to the number of protons in its nucleus. Given that the element has 45 protons, its atomic number is 45.
Q4What event signifies the conclusion of the mitosis process?
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✓ Correct answer: Telophase
The conclusion of the mitosis process is marked by Telophase. During this phase, the chromosomes assemble on opposite sides of the dividing cell. Mitosis is a four-step process that generates two identical cells from a single original cell. - Prophase, the first and lengthiest stage of mitosis, involves the chromosomes becoming visible and the centrioles separating and moving to opposite ends of the cell. - Metaphase, the second stage of mitosis, sees the chromosomes aligning across the cell's center and attaching to the spindle fiber at their centromere. - Anaphase, the third stage of mitosis, entails the sister chromatids separating into individual chromosomes and being pulled apart. - Telophase, the fourth and final stage of mitosis, involves the chromosomes gathering at opposite ends of the cell and losing their distinctive rod-like shapes. Subsequently, two new nuclear membranes form around each of the two DNA regions, and the spindle fibers vanish.
Q5What type of tissue do neurons belong to?
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✓ Correct answer: Nervous
The brain, nerves, and spinal cord are composed of nervous tissue. Neurons form the nerves and transmit electrical signals throughout the body. Specific support cells, like myelin, serve to safeguard nervous tissue.
Q6What bodily system do the arteries and veins belong to?
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✓ Correct answer: Cardiovascular system
The cardiovascular (circulatory) system is responsible for circulating blood and lymph throughout the body. This facilitates the distribution of nutrients, removal of waste, communication, and protection. The cardiovascular system comprises the heart, arteries, veins, plasma, lymph, lymphocytes, leukocytes, hemoglobin, and capillaries.
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