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A 1/2 kg block of aluminum is heated to 200 C. It is quickly placed in an insulated tub of water at 0 C and sealed. It all comes to equilibrium at 20 C. What is the mass of the water? Specific heats of Al is 900 J/kg C and water is 4186 J/kg C.
a pendulum of length 50 cm is pulled 30 cm away from thevertical axis and released from rest. What will be its speed at the bottom of its swing
three identical 6.0-kg cubes are placed on a horizontal frictionless surface in contact with one another. the cubes are
A gas is compressed at a constant pressure of 0.800atm from9.00 L to 2.00 L. In the process, 400 J of energy leaves the gas by heat. What is the change in its internal energy
Suppose I have two infinite wires, one on the y axis and one on the x axis, each charged uniformly with lamda C/m. Find an expression for the electric field E at any point in the x and y plane as a function of x and y.
At the end of three months, the spot rate is $1.37 per euro, and Quality delivers the merchandise, collecting 400,000 Euros. Illustrate what are the effects on net income from these transactions?
a curve in a road forms part of a horizontal circle. as a car goes around it at constant speed of 14m/s the horizontal total force on the driver has magnitude 147n, find the total horizontal force at the same curve
a 35.0 cm diameter coil consists of 30 turns of circular copper wire 2.0 mm in diameter. a uniform magnetic field
An incident X-ray photon of wavelength 0.2800 nm is scattered from an electron that is initially at rest. find the momentum gained by the electron
An astronaut living at a space station is in a constant state of free fall- the only force exerted on her and on the space station is the gravitational force due to the Earth. How can an astronaut determine her mass while on an extended stay in sp..
A small solid ball of mass M and radius R rolls without slipping on the track whose height y as a function of horizontal position x is given by y=ax^2, Find an expression for the period of the resulting motion
A radar station locates a sinking ship at range 17.5 km and bearing 136° clockwise from north. How far apart are the plane and ship
A 140 g ball moving at 0.35 m/s in the + x-direction is subject to a 0.20 N force in the - y-direction for 2.0 s, Find the magnitude of the ball's momentum change
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