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It is a damp, chilly day in a New England seacoast town suffering from a power failure. To warm up the cold, clammy sheets, Jen decides to fill hot water bottles to tuck between the sheets at the foot of the beds. If she wishes to heat 3.0 L of water on the wood stove from 20.0° C to 80.0° C, how much heat must flow into the water?
_________ MJ
When 4625 J of heat are added to a 0.13-m-long silver bar, its length increases by 4.59 10-3 m. What is the mass of the bar
A motorist drives along a straight road at a constant speed of 22.0 m/s. Just as she passes a parked motorcycle police officer, Find the speed of the officer as he overtakes the motorist
A spark plug in an automobile engine consists of two metal conductors that are separated by a distance of 1.1 mm, What is the magnitude of the potential difference V between the conductors
A hydrogen atom that is initially at rest absorbs a photon with an energy of 18 eV. What is the momentum of the atom after it absorbs the photon
A metallic, spherical Christmas tree ornament has a diameter of 16.00 cm. find where will he see his reflection in the mirror
Suppose that you are traveling on board a spacecraft that is moving with respect to the earth at a speed of 0.946c. calculate your breathing rate
Robin hood aims a 500 g arrow at a 2 kg bird perched on a tree. The arrow is released with a speed of 40 m/s at an angle 30 degrees to the horizon. How far from the tree base do the bird and arrow land
If the bunting support rope is at 30 degree to the vertical and its tension force is 400N, what is the vertical component of the tension, and what is the horizontal pull from the bunting
A steel cable with a total length of 27.7 m and total mass of 91 kg is connected to two poles. Calculate the wavelength of the resulting wave on the cable
A 50.0 g sample of carbon taken from the femur bone of a skeleton is found to havea carbon -14 decay rate of 410 decays/min
A typical coal-fired power plant has a generating capacity of about 1.3 X 10^9 W of electric power. What is the overall thermal efficiency of the plant
Two plastic spheres, each carrying charge uniformly distributed throughout its interior, are initially placed in contact and then released, Find the maximum acceleration achieved by the sphere of mass 55.0g
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