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In attempting to jump start a car of mass 1100kg, two brotherseach push with an equal force of magnitude 670N parallel to thecar's velocity. The car moves at a constant speed of 2.8 m/sfor 55m, when it starts. The car is on a road that slopes downhillat 0.7 degrees with the horizontal.
Find the friction force that acts on the car.
A particle of mass 0.500 kg is attached to the 100-cm mark of a meterstick of mass 0.200 kg. Calculate the angular momentum of the system
A heat pump extracts 7.0*10^6 J heat per hour from a well at 280K and delivers its output heat into a house at 320K. what minimum work must be supplied to the heat pump per hour
Which of these statements is true about circuit components connected in parallel? The potential drop across each component will be the same. Both the current passing through and the potential drop across each component are different. The same amou..
A 206 kg cart runs into the rear end of a 102 kg cart that is stationary. What is the speed of the moving cart before the collision
A multicylinder gasoline engine in an airplane, operating at 2.35 103 rev/min, takes in energy 7.83 103 J and exhausts 4.57 103 J for each revolution of the crankshaft. What is the torque exerted by the crankshaft on the load?
A girl with a mass of 60kg springs from a trampoline with an initial upward velocity of 8.0 m/s. what is the maximum height that the girl (with box) reaches
A transverse wave is travelling in a denser medium is incident on a rarer medium. How the phase of the wave is affected
A rock of mass 0.19 kg falls from restfrom a height of 12 m into a pail containing 0.30 kg of water. Therock and water have the same initial temperature. The specific heatcapacity of the rock is 1820 J/(kg·C°).
The plate seperation of a parallel plate capacitor is 1mm. The area of the plates is 10cm2. Determine the energy stored in the capacitor with the dielectric
A parallel-plate capacitor has the volume between its plates filled with plastic with dielectric constant K. Use Gauss's law to calculate the magnitude of the electric field in the dielectric
A 50-kilogram woman balances on one heel of a pair of high heel shoes. If the heel is circular with radius of .5 cm, what pressure does she exert on the floor.
A 80.0 Hz generator with an rms voltage of 150 V is connected in series to a 3.20 k ohm resistor, estimate the phase angle between the current and the voltage
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