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Three carts of masses Three carts of masses m1=6.0 kg, m2=12.0 kg, and m3=5.0 kg move on africtionless horizontal track with speeds of v1 =5.0 m/s, v2 =3.0 m/s, and v3 =-4.0 m/s,as shown in Figure . The carts stick together after colliding. Find the final velocity of the three carts after collision?
A heat pump has a coefficient of performance of 3.75 and operates with a power consumption of 6.89 103 W. How much energy does it extract from the outside air
The cost recovery method was chosen.
The two wires of length 2 m are 3 mm apart and carry a current of 10 A dc. Calculate the force between these wires
Doubling the total energy of a particle: (a) Does not affect its momentum (b) quadruples its momentum (c) more than doubles the momentum (d) doubles its momentum (e) less than doubles its momentum I know the answer is (c) but what equation is used to..
What transfer price will provide an equal rate of return for each of the investors in the first year of operation?
Two satellites are headed towards each other and crash. The one on the left has a rest mass of 200 kilograms and a velocity of .8c. The one on the right has a rest mass of 100 kilograms and a velocity of .6c. What is the resultant direction is and th..
Light hits the surface of water (n = 1.33) at an incident angle of 25.0 degrees with respect to the normal line. What is the angle between the reflected ray and the refracted ray? The answer is 136.5 but I'm getting 18.5.
After a 3.01 resistor is connected across a battery with a 0.21 internal resistance, What is the rated emf of the battery
A transverse periodic wave is represented by the equation z(y,t) = 3.2 cm sin( 5m^-1 y + 1500 rad/s t). What is the frequency of the vibration of the wave? Give answer in Hz
A rubber balloon is filled with 1 L of air at 1 atm and room temperature. what is the new volume of the balloon
An RLC circuit is used to tune a radio to an FM radio station broadcasting at 35.9 MHz. What inductance should be present in the circuit
A galvanometer has a coil resistance of Rgalv = 89.7 ?. It is to be made into an ammeter with a full-scale deflection equal to I = 2.35 A. If the galvanometer deflects full scale for a current of Igalv = 135 mA, what size shunt resistor should be use..
The partial pressure of oxygen in air is about 0.20 atm. (Air is 20% oxygen by volume.) In deep-sea diving, the composition of air the diver breathes must be changed to maintain this partial pressure. What must the oxygen content (in precent by volum..
a 1200 kg car going 25m/s is brought to stop using its brakes. what is the change in temperature of the brakes and wheels
A 1.50*10^3-kg car starts from rest and accelerates uniformly to 19.1 m/s in 12.0 s. Find the instantaneous power output of the engine at t = 12.0 s, just before the car stops accelerating
Explain how fast will he be moving backward just after releasing the ball?
A fire hose of radius 0.0300m is connected to the pump outlet on the fire truck. At what average speed does water enter the hose
The driver of one car sounds a 365 Hz frequency horn and the driver of the other car hears a frequency of 392 Hz, Determine the speed of both cars
A He+ ion is placed in an excited state, so that its remaining electron occupies the n=5 state. The electron can make a transition to any lower energy state, thereby giving off a photon. What wavelengths of light would be given off in these transi..
In a 261-turn automobile alternator, the magnetic flux in each turn is ?B = (2.62E-4 T*m2) cos(?t), determine the maximum emf in the alternator
A laser used in a holography experiment has an average output power of 5.25 mW. Calculate the energy (in joules) radiated with each pulse
A bowling ball of mass 7.00kg is rolling at 3.00m/s along a level surface. Calculate the ball's rotational kinetic energy
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