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Describe the construction of a electromagnetic velocity sensor and explain its working. In a bike speedometer the wheel diameter is 80cm what is the frequency of velocity sensor, which gives 1 pulse
A 2-kg metal ball moving at a speed of 3m/s strikes a 1-kg wooden ball that is at rest. After collision, the speed of the metal ball is 1m/s. Assuming momentum is conserved, what is the speed of th
A vertical electric field of magnitude 2.00 ×10^4N/C exists above the Earth's surface on a day when a thunderstorm is brewing .A car with a rectangular size of 6.00m by 3.00m is traveling alon
The lowest lying excited state of sodium is 2.104 eV above the ground state. Given that Planck's constant is 4.135x10 (to the negative 15 pwr.) eV/Hz, what color of light do you expect sodium atoms
An airplane must reach a speed of 199 mi/h to take off. If the runway is 470 m long, what is the minimum value of the acceleration that will allow the airplane to take off successfully?
The inverted image of a light bulb is formed on a screen located 9,00 metres from a spherical mirror. The image is 4 times larger than the light bulb. Determine the object distance and type of mirr
A person is riding a bicycle at a constant speed of 36km/hour. The radius of the wheel is 50cm. a. Determine the angular speed of the bicycle.
15.0 moles of gas are in a 5.00L tank at 22.2°C . Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300L2
If a curve with a radius of 85m is properly banked for a car traveling 68 km/h, what must be the coefficient of static friction for a car not to skid when traveling at 93 km/h?
A 1.80 mol sample of helium gas initially at 300 K and 0.400 atm is compressed isothermally to 1.20 atm. Note that the helium behaves as an ideal gas. What is the final volume of the gas?
The acceleration of a certain simple harmonic oscillator is given by a = -(15.8 m/s2) cos (2.51t). What is the amplitude of the simple harmonic motion?
What volume (in mL) of 0.0032 M Na2Cr2O7 would be required to titrate a 20 mL aliquot of water with COD of 720 ppm? The formula is volume (Na2Cr2O7) = Moles(Na2Cr2O7)/[(Na2Cr2O7]. how to obtai
If a fish is attached to a vertical spring and slowly lowered to its equilibrium position, it is found to stretch the spring by an amount d. If the same fish is attached to the end of the unstretche
The distance between the first and the fifth minimum on a screen 62 cm behind the slits is 6.1 mm. What is the wavelength (in {rm nm}) of the light used in this experiment?
The speed of sound is 343 m/s. What is the separation between two seats, located on opposite sides of the center of the row, at which the tone cannot be heard?
A particle of mass 78 g and charge 71 μC is released from rest when it is 42 cm from a second particle of charge -12 μC. Determine the magnitude of the initial acceleration of the 78 g partic
A sample of ideal gas at room temperature occupies a volume of 38.0L L at a pressure of 792torr torr . If the pressure changes to 3960torr torr , with no change in the temperature or moles of gas, w
The maximum speed of a 3.1kg mass attached to a string is .68 m/s and the maximum force exerted on the mass is 11N. What is the amplitude of motion for the mass? What is the force constant on the s
While attempting to tune the note C at 532 Hz, a piano tuner hears 5 beats/s between a reference oscillator and the string. (a) What are the possible frequencies of the string?
Automobile engine slows down from 4500rpm to 1200rpm in 2.5 s. Calculate (a) its angular acceleration, assumed constant, and (b) the total number of revolutions the engine makes in this time.
What are the components of vector in the xy plane if its direction is 252 counterclockwise from positive x axis and its magnitude is 7.34 units?
The charge was always found to be a small multiple of 1.6e-19 C. Find the charge on an oil drop weighing 1.84 10-14 N and suspended in a downward field of magnitude 2.88 104 N/C.
During the acceleration, the hoisting cable applies a force of 9300 N. What does the scale read during the acceleration?
2.00 ml of a 0.75 m solution of potassium permangante k2mnO4 solution is used to make a 500.00 ml solution. What is the concentration go the new solution.
A particle with a charge of 4.22 10-6C is placed between two parallel plates and feels a force of 1.61 10-4N. What is the strength of the field between the two plates?