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Questions in physics

[Done] What is the total displacement of a bee that flies 2 meters east, 5 meters north, and 3 meters east?

[Done] The density of cork is [tex]0.24 \, \text{g/cm}^3[/tex]. What is the volume of a 240-gram piece of cork?

[Done] A pendulum takes 10 seconds to swing through 2 complete cycles. a. How long does it take to complete one cycle? b. What is its period? c. What is its frequency?

[Done] What is the potential energy of a 2-kilogram potted plant that is on a 1 meter-high plant stand?

[Done] Acceleration refers to: A. increasing speed B. decreasing speed C. changing direction D. all of the above

[Done] A child’s toy rake is held so that its output arm is 0.75 meters. If the mechanical advantage is 0.33, what is the input arm length?

[Done] An object is thrown off a cliff with a horizontal speed of 10 m/s. After 3 seconds, the object hits the ground. Find the height of the cliff and the total horizontal distance traveled by the object. a. What do you know? b. What do you need to solve for? c. What equation(s) will you use? d. What is the solution to this problem?

[Done] A helicopter's speed increases from 25 m/sec to 60 m/sec in 5 seconds. What is the acceleration of this helicopter?

[Done] An atom of sodium-23 (atomic number = 11) has a positive charge of +1. Given this information, answer the following: 1. How many electrons does it have? 2. How many protons does this atom have? 3. How many neutrons does this atom have?

[Done] A 10-meter long ramp has a mechanical advantage of 5. What is the height of the ramp?