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A piece of glass has a temperature of 77.0 °C. Liquid that has a temperature of 39.0 °C is poured over the glass, totally covering it, and the temperature at equilibrium is 50.0 °C. The mass of the glass and the liquid is the same. Ignoring the container that holds the glass and liquid and assuming that the heat lost to or gained from the surroundings is negligible, decide the specific heat capacity of the liquid.
a series combination of a 14 k resistor and an unknown capacitor is connected to a 11 v battery. one second after the
A block (m=.75kg) is released from the top of a frictionless inclineed plane that has a height of 1.5m, How much energy was lost in the collision
A cart of 0.5 kg hits a fixed cart of 1.5 kg with a velocity of 3 m/s in the north direction. Both carts get stuck together and move, What is the direction of the velocity vector
A particular engine has a power output of 4.00 kW and an efficiency of 23.0%. Assume the engine expels 7000 J of energy in each cycle. Find the energy absorbed in each cycle
the plate on the back of a certain computer scanner says that the unit draws 0.340 a of current from a 120 v 60.0 hz
a lightning bolt with 20000a of current in a circular cross section of radius 5mm strikes the ground 1m from where you
You are holding a 5 kg dumbbell straight out at arm's length. Assuming your arm is 0.62 m long, what torque is the dumbbell exerting on your shoulder
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of81.0m/sat ground level. What is its velocity just before it hits the ground
a crane massless boom is used to lift a 2000 lb car. the boom is 60 degrees above the horizontal. the cable above the
A 3.0 microcoulomb point charge is placed in an external uniform electricfield of 1.6*10^4 N/C. At what distance from the charge is the netelectric field zero
In Oersted's experiment, suppose that the compass was 0.27 m from the current-carrying wire. If a magnetic field of 1/4 the Earth's magnetic field of 5*10-5 T was required to give a noticeable deflection of the compass needle, what current must the w..
A college student produces about 127 kcal of heat per hour onthe average. What is the rate of energy production in watts? How many kilocalories of heat does the operation of a 1195 Whair dryer produce each second?
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