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A block of ice of mass in and at a temperature of -10oC is placed in a container that has 400 g of water at 20oC. Tb ice melted and the temperature of the water went down to 10oC. Find the mass of the block of ice.
a cessna aircraft has a lift-off speed of 120 kmh.a what minimum constant acceleration does the aircraft require if it
The circuit contains a single element other than the generator. Is it a capacitor, an inductor, or a resistor? What is the value of the capacitance, inductance, or resistance, as the case may be?
A horsepower is 550 ft-Ib/s. A watt is 1 N-m/s. Determine how many watts are generated by the engines of the passenger jet if they are producing 7000 horsepower
A capacitor is charged to a potential of 12.0V and is then connected to a voltmeter having an internal resistance of 3.10M(omega) . After a time of 4.10s the voltmeter reads 3.0V . What is the capacitance? What is the time constant of the circuit?
A medical defibrillator stores 950J of energy in a 100-muF capacitor. If the capacitor discharges 280 of its stored energy in 2.5 , what power is delivered during this time
A potential difference of 81 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the ce..
Is your friend's brother hyperopic or myopic? Explain. Approximately what prescription eyeglasses should her brother be wearing?
Two cylinders each contain 0.30 mol of a diatomic gas at 270 K and a pressure of 3.0 atm. What is the final volume of the gas in the cylinder B
A person pushes a 13.6-kg shopping cart at a constant velocity for a distance of 33.1 m on a flat horizontal surface. find the magnitude of the force that the shopper exerts
In an ultrahigh vacuum system (with typical pressures lower than 10?7 pascal), find the number of molecules in a volume of 1.70 m3
In a head-on collision, a car stops in 0.27s from a speed of 24m/s}. What force is applied to the driver by his seat belt during that fraction of a second
A stone is dropped from the top of the cliff. The splash it makes when striking the water below is heard 3.5 seconds after it is dropped. How high is the cliff? Presume that the speed of sound in air is 343 m/s and g = 9.8 m/s2.
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