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Q1. Presume your local government wants to raise your taxes in order to support the construction of wind and solar power plants that can give your town with low-polluting energy and help decrease your town's dependence on fossil fuels for energy. Would you support a tax increase for this purpose? Describe why or why not.
Q2. A two-ended "rocket" that is at first stationary on a frictionless floor, with its center a origin of an x axis. The rocket consists of a central block C (of mass M = 5.00 kg) and blocks L and R (each of mass m = 1.00kg) on the left and right sides. Small explosions can shoot either of the side blocks away from mblock C and along the x axis. Here is the sequence: (1) At time t = 0, block L is shot to the left with a speed of 2.70 m/s relative to the velocity that the explosion gives the rest of the rocket. (2) Next at the time t = 0.60s, block R is shot to the right with a speed of 2.70 m/s relative to velocity that block C then has. At t = 2.60 s, what are the (a) velocity of block C and (b) position of its center?
Released from rest at the same height, a can of frozen juice rolls to the bottom of the same hill. What is the translational speed of the frozen juice can while it reaches bottom.
A cockroach of mass m lies on the rim of a uniform disk of mass 7.00 m that can rotate freely about its center like the merry-go-round. At first the cockroach and disk rotate together with an angular velocity of 0.220 rad/s. Then the cockroach walks ..
Write down the expression that shows the pressure
Express how unmet basic physiological needs of oxygen, nutrition, temperature, and humidity threaten clients' safety.
Estimate the position of C.G or fulcrum & the masses of persons on a 16 feett sea saw, under balanced condition.
What minimum constant acceleration does the aircraft require if the aircraft is to be airborne after a takeoff run of 222m.
The effectual coefficient of kinetic friction is 0.37. Compute the work done by the man on the piano.
A 25 g of copper pellets are removed from a 300 C oven and immediately dropped into 120 mL of water at 18 C in an insulated cup. What will the new water temperature be.
Unpolarized light travels throughout 2 linear polarizers. What (minimum) angle should the second polarizer be relative to the first polarizer (the difference between q1 and q2) so that the final intensity of light is 1/3 original value.
What is the maximum height, y2, if the object is thrown with a speed of v2 = 1.99v1 from the surface of Jupiter's moon Io? The acceleration due to gravity on Io is g2 = 1.79 m/s2. Give the reply as a multiple of y1.
A 5.00 x 10^4 kg space probe is travelling at a speed of 14000 m/s through deep space. Retrorockets are fired along the line of motion to decrease the probe's speed. The retrorockets generate a force of 4.00 x 10^5 N over a distance of 2600 km. What ..
If it started falling from an upright position, what was the initial angular acceleration of the structure? suppose that the bottom did not slide across the floor and that it did not fall out of plane; that is, during the fall, the structure remained..
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