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Question 1: Herman Bax of Canada grew a pumpkin with a circumference of 7 m. Suppose an ant crawled around the pumpkin's "equator." The ant started with an angular speed of 3.2 ε -3 rad/s and accelerated steadily at a rate of 6.0 ε -4 rad/s2 until its angular speed was tripled. What was the ant's angular displacement?
Question 2: Tad Burt of Israel rode a bicycle around the world in 77 days. If Bun could have ridden along the equator, his average angular speed would have been 9.0 ε -7 rad/s. Now consider an object moving with this angular speed. How long would it take the object to reach an angular speed of 5.0 ε -6 rad/s if its angular acceleration was 7.5 ε -10 rad/s2?
Question 3: A coal-burning power plant in Kazakhstan has a chimney that is nearly 500 m tall. The radius of this chimney is 7.1 in at the base. Suppose a factory worker takes a 500.0 m run around the base of the chimney. If the worker starts with an angular speed of 0.40 rad/s and has an angular acceleration of 4.0 x 10-3 rad/s2, how long will the run take?
Gas in a container is at a pressure of 1.5 atm and a volume of 4.0m3. What is the work done on the gas (a)if it expands at constant pressure to twice its initial volume? (b) if it is compressed at constant pressure to one-quarter its initial volum..
An ac circuit contains a resistor with a resistance of 8.1ohms. The resistor has an rms current of 0.14A. Find the average power delivered to the resistor
Tarzan has foolishly gotten himself into another scrape with the animals and must be rescued once again by Jane. How high will Tarzan and Jane go on their first swing
A dentist uses a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the too this formed 10.0 cm behind the mirror. Determine the mirror's radius of curvature.
A parallel-plate capacitor has plates of area 114.0 cm2 and a separation of 1.45 cm. A battery charges the plates to a potential difference of 177.0 V, What is the capacitance with the slab in place
A girl pulls a box of mass m = 6 kg across a floor with a constant horizontal force F = 22 N. Initially the block is at rest. For the first d1 = 7 m, What is work done on the box by friction in moving the box over the distance d1 + d2
A cat is running at 8.0 m/s and trying to catch a mouse, who has a tenth of the mass of the cat. What is the speed of the mouse
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, horizontal distance 19.8 km, What is the distance between the two aircraft
To focus a camera on objects at dissimilar distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. A camera by a telephoto lens (f=200.0mm) is to be focused on an object located first at a dist..
A catapult launches a rock at a 46° angle with respect to the horizontal. Find the maximum height attained if the speed of the rock at its highestpoint is 26.7 m/s
Find the energy released in the fusion reaction 2/1H+ 3/1H? 4/2He+n. The mass of 2/1H is 2.014102 u
A spring attached to the ceiling of an elevator is 10 cm long when nothing is hanging from it. It is 12 cm long when a certain mass is hanging from it and the elevator is at rest. If the elevator moves upwards at an increasing speed of 4m/s^2, how lo..
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