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Water flowing in a horizontal pipe is at a pressure of 1.55 105 Pa at a point where its cross-sectional area is 6.00 m2. Find the water's speed in the wider pipe
A plank 2.00 cm thick and 16.9 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below, find the shear modulus of t
Calculate the mass of a solid gold rectanglar bar that has dimensions lwh = 4.20 cm x 12.0 cm x 30.0 cm. (the density of gold is 19.3x10^3 kg/m^3.)
Calculate the pressure on the top lid of a chest buried under 3.65 meters of mud with density 1.75 103 kg/m3 at the bottom of a 11.5-m-deep lake
It's nighttime, and you've dropped your goggles into a swimming pool that is 3.0m deep. If you hold a laser pointer 1.2m above the edge of the pool, How far are the goggles from the edge of the pool
A listener increases his distance from a sound source by a factor of 3.03. what is the change in the sound intensity level in dB
An aluminum wire having a cross-sectional area equal to 3.20X10^-6 m^2 carries a current of 6.50 A. Find the drift speed of the electrons in the wire
Light of wavelength 5.0*10^-7 m in air is incident normally (perpendicular) on a doubled slit. The distance between the slit is 4.0*10^-4 m, Caculate the line density in slits/mm of the diffraction
A student is reading a lecture written on a blackboard. The lenses in her eyes have a refractive power of 53.90 diopters, How far is the blackboard from her eyes
A small package rests on the horizontal dashboard of a car. If %u03BCs = 0.327, what is the minimum acceleration of the car
A man is racing with his son has half the kinetic energy of the son, who has half the mass of the father. What is the original speed of the Man
A 75 kg person travels in a car at 50. mph over a hill. The radius of curvature at the peak of the hill is 90. m. What is the normal force of the seat pushing up on her
An ideal transformer steps down 120 volts and the 2630 turn secondary supplies 12 amperes. what is the ratio of output power to input power
What is the distance between two converging lenses, each of ofcal length f and used in combination to become a telescope
if 5 capacitors each of 5 micro F are connected in series with 4 capacitors each of 4 uF capacitances in parallel. what is the the net capacitance
A 2.2mH inductor is connected in parallel with a variable capacitor. What is the minimum oscillation frequency for this circuit
An inductor is connected to a 15kHz oscillator that produces an rms voltage of 7.0V. What is the value of the inductance L
Suppose you tart with 250 g of ice at 0 degrees celsius. Calculate the amount of heat energy that must be transferred to convert the ice to steam at 100 degrees celsius
The maximum allowed leakage of microwave radiation from a microwave oven is 5.0 mW/cm^2, what is the amplitude of the oscillating electric field
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. calculate At what angle is the airplane banked
A 0.80 kg framed picture hangs by a light wire on a nail. The 50 cm long wire is attached to both ends of the 40 cm wide picture frame, What is the tension in the wire
A transformer with 120. turns in its secondary supplies 12. volts at 220. ma to a toy train. The primary is connected across a 120. V wall outlet. What power is delivered by the wall outlet
Two ice skaters, Daniel (mass 65.0 kg) and Rebecca (mass 45.0kg), are practicing. Daniel stops to tie his shoelace and,while at rest, find direction of Daniel's velocity after the collision
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 53.0cm. What is the magnitude of the gravitational acceleration on this planet
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. How fast are the waves traveling