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A 250 g piece of lead is heated to 300 Celsius and placed into a beaker containing 500 ml of water. How much heat energy is passed from the lead to the water if the lead cools down to 30 Celsius?
A 3.02 kg block located on a horizontal frictionless floor is pulled by a cord that exerts a force F=14.3 N at an angle θ= 15.5° above the horizontal, as shown.
Suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.44 m radius and is 1.8 m high. The walls are 1.0 cm thick.
A sledge loaded with bricks has a total mass of 18.1 kg and is puled at a constant speed by a rope inclined at 19.0^above The horizontal. determine the mechanical energy lost due to friction
A 70 ohm lamp and a 75 ohm lamp are connected in series and placed across a potential of 41 V. What is the voltage drop across the first lamp
A muon formed high in Earth's atmosphere travels at speed v = 0.92c for a distance of 4.3 km before it decays into an electron, a neutrino, How far does the muon travel
when comparing the experimental ir spectra to the literature ir spectra of the same compound the positions and
An inclined plane of angle ? = 20.0° has a spring of force constant k = 495 N/m fastened securely at the bottom so that the spring is parallel to the surface as shown in the figure below. A block of mass m = 2.39 kg is placed on the plane at a dis..
a small diameter 61-cm long solenoid has 280 turns and is connected in series with a resistor of 184 ohm. calculate
A man normally consumes 8.4 MJ of food energy per day. He then begins running a distance of 9four times per week. how much more food energy should he consume daily in order to maintain constant weight
suppose we measure the resistance from one hand to the other and find it to be 2 kilo ohms. What is the resistivity of skin
The rod is held in the horizontal position shown and then released. Compute the initial acceleration of the mass attached to l1. Assume up is positive and down is negative
a hair dryer operates at 1800 watts along with a 240 watt power resistor connected in series. Utilizing a 120 volt source, determine the individual resistance Ri and the voltage drop Vi across each compenent in the circuit
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