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A reversible engine takes in 555 joules per second and exhausts 482 watts. how much power does it produce
What is the focal length of a meniscus lens that has a convex surface of radius 32 cm and a concave surface of radius -16 cm
An 82.0 kg-diver stands at the edge of a light 5.00-m diving board, which is supported by two pillars 1.60 m apart, Find the force exerted by pillar A
A gear train is to be designed to transmit power from shaft 1 to shaft 2 with the following condition: Shaft 1 (driven by an electric motor) rotates at 100 revs min%u20131. Determine the input power r
An airplane accelerates down a runway at 3.20 m/s2 for 32.8 s until is finally lifts off the ground. Determine the distance traveled before takeoff
A near-sighted person might correct his vision by wearing diverging lenses with focal length f = -55cm. Use ray tracing to determine the height of the image
An astronaut weighs 185 lb on earth. What is her weight on the moon, where the acceleration due to gravity is 5.28 ft/s2
a cart with a mass of 200 kg along a frictionless track. Calculate the velocity of the cart at points A and C is the cart is dropped from a height of 100m with an initial velocity of 10 m/s
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20C, How much energy might you lose in one week
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. find the temperature of the inner surface of the bottom of the pot
You are a professional frontier re-enactor who specializes in making lead shot. How much energy is required to cool a single droplet of molten lead all the way down to 0 C
How many photons are emitted during 7.0 s of operation of a red laser pointer? The device outputs 2.5 Watts at a 635 nm wavelength
A high-voltage copper transmission line with a diameter of 2.60 cm and a length of 130 km carries a steady current of 1.03 103 A. what time interval does one electron travel the full length of the l
A 10-turn ideal solenoid has an inductance of 3.5 mH. When the solenoid carries a current of 8.0 A the magnetic flux (in mWb) through each turn is
An ac generator producing 10 V (rms) at 300 rad/s is connected in series with a 25-? resistor, The rms current in the circuit (in mA) is
A 5.60 kg of mass is pressed against a spring with a spring constant of 12500 N/m. how high above the ground does it go before coming to a stop
An ac generator producing 20 V (rms) at 200 rad/s is connected in series with a 50-%uF057 resistor, The rms voltage (in volts) across the capacitor is
A series circuit consists of a 15-%uF057 resistor, a 35-mH inductor, and a 25-%uF06DF capacitor. If the frequency is 100 Hz the power factor is
One hundred turns of insulated copper wire are wrapped around an iron core of cross-sectional area 0.100 m2. find the average current in amperes that flows through the resistor
Two identical launchers fire projectiles with the same initial velocity. One launcher is 3.54m above the ground and fires horizontally. what is the intial velocity of the projectiles
The heating element of a simple heater consists of a 2.2-m-long, 0.65-mm-diameter nichrome wire. calculate the resistivity of nichrome in this situation
A liquid is flowing through a horizontal pipe whose radius is 0.0216 m. What volume flow rate will keep the pressures in the two horizontal pipes the same
A series RCL circuit driven at angular frequency %u03C9 = 505 rad/s has a capacitive reactance XC = 851 %u03A9, What is the total impedance
A ball has a diameter of 3.9 cm and average density of 0.0839 g/cm3. What force is required to hold it completely submerged under water
A space probe is fired as a projectile from the Earth's surface with an initial speed of 1.78 x 10^4 m/s. What will its speed be when it is very far from the Earth