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The common cost of electric power is $ 0.120 (dollars) per kilowatt-hour. to some People always keep a lamp on near the front door. What is the costannual to have a 75 W light bulb on day and night?
b) Suppose your refrigerator uses 400 W of power when it is in operation, and it works 8 hours a day. What is your annual cost of operation?
An object of mass m = 2.6 kg falls from a height of 0.55 m on the top of a spring (see picture). The elastic constant is k = 72 N/m. What is the maximum compression of the spring? What is the maximum height that the object reaches once its pushed ..
The coefficient of static friction among the floor of a truck and a box resting on it is 0.26. The truck is traveling at 84.1 km/hr. What is the least distance in which the truck can stop and ensure that the box does not slide?
An air puck of mass 0.29 kg is tied to a string and allowed to revolve in a circle of radius 1.4 m on a frictionless horizontal table. The other end of the string passes during a hole in the center of the table, and a mass of 0.7kg is tied to it. The..
A uranium and iron atom reside a distance R = 51.10 nm apart. The uranium atom is singly ionized; the iron atom is doubly ionized, What is the magnitude of the force on the electron from the uranium ion
What is kinetic energy of the shell
Some bacteria are propelled by biologicalmotors that spin hair-like flagella. A typical bacterial motorturning at a constant angular velocity has a radiusof 1.36 x10-8m, and a tangential speed at the rimof 2.21 x 10-5m/s.
A uniform charged disk of radius 30.0cm carries charge with a density of 8.00x10^-4 C/m^2. Calculate the electric field on the axis of the disk at
The electric potential is given by (51V/m^7)( (x*z^6)+( x^3 * y^4 )) in the region including the point (x,y,z) = (-2, 7, -3)m exactly. Discover the y-component of electric field at that point.
If a nearsighted person has a far point df that is 3.50m from the eye, what is the focal length f1 of the contact lenses
This assignment has been designed to give you a general oversight of the typical issues that you will face as a database administrator/consultant in most commercial situations. The objective is to prepare with a solid foundation of good database d..
A futuristic design for a car is to have a large disklike flywheel within the car storing kinetic energy. The flywheel has mass 370 kg with a radius of 0.50 m and can rotate up to 540 rev/s.
When light of a certain waveleght is incident normally on a certain diffraction grating the line of order 1 ia at a diffraction angle 25 Degrees
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