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Q1. Explain what causes the seasons that we experience in the temperate region of the Northern Hemisphere. Do you have fall and winter in the tropics? Would you have seasons in the Southern Hemisphere?
Q2. Suppose you have three rocks: One is Basalt; one is Calcium Carbonate, and one is quartz. Explain how you might determine which is which: by density, chemical reactions, and hardness tests. Also indicate whether the rock is sedimentary, igneous, or metamorphic.
Q3. Explain why Earth has a higher density, 5.52 g/cm3, than the Earth's Moon by explaining what is meant by density, what the density of the Earth's moon is, and how the elemental composition of Earth and the moon impact their respective density.
You have a thin rod of length 20cm which has a charge density that varies with position on the rod. In fact it is given by 3x, where x is in meters. Determine the net charge on the rod
A cart of mass 250 g is placed on africtionless horizontal air track. evaluate the period at which it oscillates
A 1443 kg railroad car traveling at a speed of 10m/s strikes an identical car at rest. what is their common speed afterward
In a quarter-mile drag race, two cars start simultaneously from rest, and each accelerates at a constant rate until it either reaches its maximum speed or crosses the finish line. By how many seconds does this car win the race
A turbine fan in a jet engine has a moment of inertia of 2.5 kgm^2 about its axis of rotation. Find the fan's angular momentum and the net torque acting on the fan as functions of time
On a weekend archeological dig, you discover an old club-ax thatconsists of a symmetrical 10.0 kgstone attached to the end of a uniform 3.5 kg stick. You measure the dimensions of the club-ax as shown in the figure
You are given a galvanometer with a resistance of 17.3 ? and a full scale deflection current of 8.42 mA. Find the maximum current the ammeter is capable of reading
In the drawing, the weight of the block on the table is 422 N and that of the hanging block is 185 N. calculate the acceleration of the two blocks
An aluminum rod is clamped one quarter of the way along its length and set into longitudinal vibration by a variable-frequency driving source. obtain the length of the rod
Is the force attractive or repulsive?
A 54kg ice skater moving at 6.4m/s glides to a stop. Assumingthe ice is at 0deg C and that 50% of the heat generated by frictionis absorbed by the ice, how much ice melts
Consider a spacecraft in an elliptical orbit around the Earth.At the perigee it is 400 km away from the earth's surface; What is the period of the spacecraft's orbit
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