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Q. A 2.00 kg metal ball moving at a speed of 3m/s strikes a 1.00 kg wooden ball that is at rest. After collision, the speed of the metal ball is 1m/s. Assume momentum is conserved, what is the speed of the wooden ball?
Q. The reflecting surfaces of two intersecting flat mirrors are at the angle of 59. A light ray strikes the horizontal mirror, reflects off horizontal mirror, impinges on the raised mirror, reflects off the raised mirror and proceeds in the right-hand direction.
An object 9 cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright, 4 cm tall, and located at the 49.0 cm mark of the meterstick.
A street lamp weight 164N. It is supported equally by two wires that form an angle of 129 degrees with each other. What is the tension of each of these wires.
110 grams of boiling water (temperature 100° C, heat capacity 4.20 J/gram/K) are poured into an aluminum pan whose mass is 1000 grams and initial temperature 24° C (the heat capacity of aluminum is 0.9 J/gram/K).
Charges q and Q are placed on the x axis at x = 0 and x = 2.0 m, respectively. If q = -40 pC and Q = +30 pC, define the net flux through a spherical surface (radius = 1.0 m) centered on the origin.
Objective questions based on kinematics.
The gravitational force exerted on a baseball is 2.23 N down. A pitcher throws the ball horizontally with velocity 14.5 m/s by uniformly accelerating it along a straight horizontal line for a time interval of 169 ms. The ball starts from rest.
A proton moves perpendicularly to a uniform magnetic ?eld B with a speed of 1.9 × 10 ^7 m/s and experiences an acceleration of 8 × 10 12 m/s 2 in the positive x direction when its velocity is in the positive z direction. The mass of a proton is 1...
What is the ratio of the amplitude of the damped oscillation
What is walking speed if the speed drops. after an exciting but exhausting lecture, a physic lecture stretch out for a nap on a bed of nails, suffering no injury and only moderate discomfort. how is this possible.
What will be the equilibrium temperature when a 223 g block of copper at 258 C is placed in the 178 g aluminium calorimeter cup containing 874 g of water at 13.2 C.
Satellite is in a circular orbit about the earth (ME = 5.98 1024 kg). The period of the satellite is 3.70 104 s. What is the speed at which satellite travels.
A 65 kg hiker has fallen down a hole. One rescuer attaches a rope to the injured hiker and then a second rescuer pulls the injured hiker straight up out of the hole at a steady rate. How much force would the second rescuer need to exert on the rope t..
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