Chapter 4, Problem 7MC

Based on the two periods (from hand timed and ultrasonic sensor), find the value of 'k' they suggest from the physics and from the value of the hanging mass. hand time period is 1.472s and ultrasonic sensor time period is 1.44s

No chatgpt pls will upvote

Experimental Research Report Template Title: Paper Airplane Flight. Materials: Paper, ruler, tape Procedure: Fold paper into different airplane designs, such as dart, glider, or classic. Measure and record the distances each design flies when thrown with the same force. Discuss aerodynamics and the factors that affect flight distance.       Introduction: (What do you expect to learn? What is the purpose of this lab? List any questions this experiment will answer.)       Hypothesis: (Predict the outcome(s) of the experiment, must be in an “if…then format.)           Materials: (What equipment and materials did you need for this experiment assignment? Describe how any equipment was connected. Also mention any special hardware or connections. List the name and amount of each item used.)             Procedures: (What steps did you take to accomplish this lab assignment? Include Safety Precautions.)                       Data Collection: (Record the data that is required at each step of the…

Title: Studying the Relationship Between Drop Height and Bouncing Height of a Ball: You can drop balls of different materials (e.g., rubber, plastic, ping pong) from various heights onto a flat surface and measure the height of their bounce using a ruler.   Introduction: (What do you expect to learn? What is the purpose of this lab? List any questions this experiment will answer.)       Hypothesis: (Predict the outcome(s) of the experiment, must be in an “if…then format.)           Materials: (What equipment and materials did you need for this experiment assignment? Describe how any equipment was connected. Also mention any special hardware or connections. List the name and amount of each item used.)             Procedures: (What steps did you take to accomplish this lab assignment? Include Safety Precautions.)                       Data Collection: (Record the data that is required at each step of the lab: tables, charts, graphs, sketches, etc.)             Data Analysis: (Explain you…

A traveler at an airport takes an escalator up one floor as in the figure below. The moving staircase would itself carry him upward with vertical velocity component v between entry and exit points separated by height h. However, while the escalator is moving, the hurried traveler climbs the steps of the escalator at a rate of n steps/s. Assume that the height of each step is hs. (a) Determine the amount of chemical energy converted into mechanical energy by the traveler's leg muscles during his escalator ride given that his mass is m. (Use any variable or symbol stated above along with the following as necessary: g.) energy = (b) Determine the work the escalator motor does on this person. (Use any variable or symbol stated above along with the following as necessary: g.) work =

Which of the following is part of the interior of the Sun? photosphere the corona     sunspots radiation zone

Most craters on the surface of the Moon are believed to be caused by which of the following? faults asteroids     volcanoes meteoroids

An object is subjected to a friction force with magnitude 5.49 N, which acts against the object's velocity. What is the work (in J) needed to move the object at constant speed for the following routes? y (m) C B (5.00, 5.00) A x (m) © (a) the purple path O to A followed by a return purple path to O ] (b) the purple path O to C followed by a return blue path to O ] (c) the blue path O to C followed by a return blue path to O ] (d) Each of your three answers should be nonzero. What is the significance of this observation? ○ The force of friction is a conservative force. ○ The force of friction is a nonconservative force.

A block of mass m = 2.50 kg is pushed d = 2.30 m along a frictionless horizontal table by a constant applied force of magnitude F = 10.0 N directed at an angle 25.0° below the horizontal as shown in the figure below. m (a) Determine the work done by the applied force. ] (b) Determine the work done by the normal force exerted by the table. ] (c) Determine the work done by the force of gravity. ] (d) Determine the work done by the net force on the block. ]