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Q1. A rock is projected from the edge of the top of a building with an initial velocity of 14 m/s at an angle of 36 above the horizontal. The rock strikes the ground a horizontal distance of 44 m from the base of the building. Assume that the ground is level and that the side of the building is vertical. How long did the rock take to hit the ground? Give your answer in seconds to two decimal places. Hint: Look at the horizontal components of the motion.
Q2. A hollow aluminium cylinder 16.0 cm deep has an internal capacity of 2.000 L at 17.0°C. It is completely filled with turpentine at 17.0°C. The turpentine and the aluminum cylinder are then slowly warmed together to 67.0°C. (The average linear expansion coefficient for aluminum is 2.4 10-5°C-1, and the average volume expansion coefficient for turpentine is 9.0 10-4°C-1.)
(a) How much turpentine overflows?
(b) What is the volume of turpentine remaining in cylinder at 69.0°C?
(c) If the combination with this amount of turpentine is then cooled back to 19.0°C, how distant below the cylinder's rim does the turpentine's surface recede?
A race car starts from rest on the circular track of radius 455m. The car's speed increases at the constant rate of 0.480m/s2. At the point where magnitudes of the centripetal and tangential accelerations are equal.
A microphone is located on the line connecting two speakers that are 0.514 m apart and oscillating 180° out of phase. The microphone is 2.17 m from the midpoint of the two speakers.
Two small plastic spheres, one charged to 17nC and the other to -17nC are connected by a 25 mm long insulating rod, What is the maximum possible torque on the dipole
Electric field lines from a charged flat plate in air to the parallel flat plate with the opposite charge (a dc capacitor). Within this space, small (compared to the size of the plates) rectangles of non -conducting and conducting materials.
It takes an elevator 3.4 minutes to raise a vehicle with a mass of 366 kg from the floor to a height of 7 meters. What size (power) motor (in watts) does it take to do the job
If the percentage standard error in measuring voltages and currents is 2%, the percentage standard error in measuring the radius of the path is 3%, what is the percentage standard error in finding e/m
A small button placed on a horizontal rotating platform with diameter 0.326m will revolve with the platform when it is brought up to a rotational speed of 43.0rev/min, How far from the axis can the button be placed, without slipping,
questionone of the methods used to train astronauts for the effects of zero gravity in space is to put them in a
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 6.60s apart. How far away did the impact ..
what is the primary microscopic origin of the magnetic field of a magnetized piece of iron, Each atomic nucleus produces a magnetic field.
A basketball of mass 270 g and radius 17 cm rolls with an initial speed of 2.5 m/s. What distance along the ramp will the ball travel before it comes to a stop
An observer moving at a speed of 0.860 c relative to a rod (Fig. P26.14) measures its length to be 2.00 m, What is the orientation angle in a reference frame moving with the rod
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