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Yellow light that has a wavelength of 6.32 102 nm passes through two narrow slits that are 0.201 mm apart. An interference pattern is produced on a screen 183 cm away. What is the location of the f
If excess energy is carried away from the plant by a river with a flow rate of 1.0 106 kg/s, what is the rise in temperature of the flowing water?
A cardinal (Richmondena cardinalis) of mass 4.20×10-2 and a baseball of mass 0.140 have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of t
An ideal spring has the spring constant k = 428 N/m. Calculate the distance this spring must be stretched from its equilibrium position for 28 J of work to be done.
What is the IMA of the jack? Assuming the jack to be 40 percent efficient, how large a load can the applied 50 N lift?
A certain string just breaks when it is under 1000 N of tension. A boy uses this string to whirl a 20 kg stone in a horizontal circle of radius 5.0 m. The boy continuously increases the speed of the
Experiment shows that the machine can lift a load of 500 N with a force of 30 N. What are the IMA, AMA, and efficiency of this machine?
A string wrapped around the cylinder pulls downward with a force F which equals the weight of a 0.750kg mass, i.e., F = 7.357N. Calculate the angular acceleration of the cylinder.
A 42 kg child sits in a swing supported by two chains, each 2.3 m long. The acceleration of gravity in 9.8 m/s2. Find the gravitational potential energy when the ropes make a 36 degree angle with th
If the lumberjack now trots toward the other end of the log with a speed of 2.7 m/s relative to the log, what is the lumberjack's speed relative to the shore? Ignore friction between the log and the
What is the average power dissipated by a 2550 Ω resistor in series with a 7.00×10-8 F capacitor and a 0.0200 H inductor when a generator with a maximum emf of 12.0 volts drives the cir
Find a 95% confidence interval for the mean amount spent by patients at the pharmacy. Show your calculations and/or explain the process used to obtain the interval.
The bullet remains embedded in the block, which is observed to slide a distance 0.280 m along the surface before stopping. What was the initial speed of the bullet?
A parachutist with a camera, both descending at a speed of 12 m/s, releases that camera at an altitude of 120 m.
A person does 100 joules of work in pulling back the string of a bow. What will be the initial speed of a 0.5-kilogram arrow when it is fired from the bow?
A race car has a mass of 721 kg. It starts from rest and travels 40 m in 4.0 s. The car is uniformly accelerated during the entire time. What net force is applied to it?
Magnetic resonance imaging needs a magnetic field strength of 1.5 T. The solenoid is 1.8 m long and 75 cm in diameter. It is tightly wound with a single layer of 2.20-mm-diameter superconducting wir
If the police car's acceleration is 1.80 , how much time elapses after the police car is passed until it overtakes the speeder (assumed moving at constant speed)?
Light of wavelength 650 nm falls on a 0.48 mm wide slit and forms a diffraction pattern on a screen 1.8 m away. (a) Find the position of the first dark band on each side of the central maximum.
What is the equilibrium angular displacement of the wire from vertical if the horizontal magnetic field is 0.07 T and the current is 0.35 A? Answer in units of ?.
A projectile that is fired from a gun has an initial velocity of 86.0 at an angle of 53.0 above the horizontal. When the projectile is at the top of its trajectory, an internal explosion causes it t
A heat engine does 30 of work per cycle while exhausting 45 of waste heat. What is the engine's thermal efficiency?
If the maximum tension the string can take without breaking is Tmax = 639 N, what is the maximum mass that can be used?
Find (a) the displacemnet for each stage of the motion and (b) the average velocity over the whole time interval.