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To determine the value of pi, a cylinder is measured to have an average value of 4.25 cm for its diameter and an average value of 13.39 cm for its circumference. What is the experimental value of p
A 1.65 kg block of ice is sliding by you on a very slippery floor at <5,0,0> m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with the ice block for 0
A coffee filter of mass 1.4 grams dropped from a height of 3 m reaches the ground with a speed of 0.7 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter?
A square with each side of length 0.15 m has four charges fixed in place at each corner. At two of the corners we have a negative charge of -2.0 microcoulombs, while a third corner has a positive ch
A particle of mass m is confined to a box of width L by infinite potential energy barriers. The particle has 30% chance of being found in the ground state, a 45% chance of being found in the first
A skier weighing 90 kg starts from rest down a hill inclined at 17°. He skis 100 m down the hill and then coasts for 70 m along level snow until he stops. Find the coeifficient of kinetic
A particles wave function is given as Ψ=A.exp(-a.x.x). Calculate the normalization constant A, The uncertainties in momentum Δρ, location Δx and their product Δp.Δx.
What is the output of a system with positive feedback? Find the power increase necessary to cause a +3 dB increase in signal.
A 75g , 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12g ball of clay traveling horizontally at 2.1 m/s hits and sticks to the very bottom tip of
Suppose you calculate that the total force on hook 1 is 3.05 N. Now, you measure the total mass of hook 1 to be 283 g, Find the percent difference between these values.
An 855 kg drag race car accelerates from rest to 111 km/h in 0.749 s. What change in momentum does the force produce?
A car starts from rest and travels for 8.0 s with a uniform acceleration of +1.5 m/s2. The driver then applies the brakes, causing a uniform acceleration of -2.0 m/s2. If the brakes are applied for
A 29 g ice cube at 0?C is placed in 805 g of water at 89?C. What is the final temperature of the mixture? The specific heat of water 4186 J/kg · ?C and latent heat of fusion of water 3.33 &ti
To give different currents through the wires along the long sides of the valve, a resistor is inserted into the wire on each of these sides. The value of the resistor on one side is twice that on th
A bird sits on a high-voltage power line with its feet 2.6 cm apart. The wire is made from aluminum, is 2.7 cm in diameter, and carries a current of 177 A. What is the potential difference between
Two small metal spheres with masses 2.0 {rm g} and 4.0 {rm g} are tied together by a 5.3-{rm cm}-long massless string and are at rest on a frictionless surface. Each is charged to +2.3 mu C. What i
Two objects are maintained at constant temperatures, one hot and one cold. Two identical bars can be attached end to end, as in part a of the drawing, or one on top of the other, as in part b. When
Taking the clockwise direction to be the negative direction, what is (a) the net torque produced by the two forces and (b) the angular acceleration of the disk?
Inside a starship at rest on the earth, a ball rolls off the top of a horizontal table and lands a distance from the foot of the table. This starship now lands on the unexplored Planet X. The comma
You are driving to the grocery store at 19. You are 130 from an intersection when the traffic light turns red. Assume that your reaction time is 0.77 and that your car brakes with constant accelerat
Treat the coffee as though it were pure water and neglect energy exchanges with the environment. The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg. The density
Rank the vector combinations on the basis of their angle, measured counterclockwise from the positive x axis. Vectors parallel to the positive x axis have an angle of 0. All angle measures fall bet
A quantum simple harmonic oscillator consists of an electron bound by a restoring force proportional to its position relative to a certain equilibrium point. The proportionality constant is 8.99N/m
A football is kicked at ground level with a speed of 10.0 m/s at an angle of 31.0° to the horizontal. How much later does it hit the ground?
A uniform ladder 15 ft long is leaning against a frictionless wall at an angle of 53° above the horizontal. The weight of the ladder is 30 pounds. A 75-lb boy climbs 6.0-ft up the ladder. What