Blog

Choose a scene from either “A Wall of Fire Rising” or “Job H…

Choose a scene from either “A Wall of Fire Rising” or “Job History” where it seems like the author made particular choices about pacing. Explain what is happening in the scene, how the pace affects the scene, and why you think the author paced the story in this way. Be thorough in your response and use specific details from the assigned readings to support your ideas. 

Kilauea in Hawaii is the world’s most continuously active vo…

Kilauea in Hawaii is the world’s most continuously active volcano. Very active volcanoes characteristically eject red-hot rocks and lava rather than smoke and ash. Suppose a large rock is ejected from the volcano with a speed of and at an angle above the horizontal, as shown in Figure below. The rock strikes the side of the volcano at an altitude  lower than its starting point. (a) Calculate the time it takes the rock to follow this path. (b) What are the magnitude and direction of the rock’s velocity at impact?

A physics professor pushes a cart of demonstration equipment…

A physics professor pushes a cart of demonstration equipment to a lecture hall, as seen in Figure below. Her mass is , the cart’s is , and the equipment’s is . Calculate the acceleration produced when the professor exerts a backward force of on the floor. All forces opposing the motion, such as friction on the cart’s wheels and air resistance, total .