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A Carnot heat engine has an efficiency of 0.800.If it operates between a deep lake with a constant temperature of 291.0 K and a hot reservoir, what is the temperature of the hot reservoir?
Waves travel 5000 m/s along a wire that is 2m long. What is the wave length of the first harmonic? What is the frequency of the first harmonic
Billy Dee notes that her favorite record rotates at 34 rev/min. At what speed does the point on the record touching the stylus (needle) move when the stylus (needle) is 5.9 cm from the center?
If a simple pendulum of length 2.09 meters is subjcted to a restoring force of 3 Newtons when displaced .15546 meters from equilibrium, what is the mass of the pendulum
To tighten a bolt, you push with a force of 78 N at the end of a wrench handle that is 0.27 m from the axis of the bolt. what force do you have to exert to achieve the same torque
A certain waffle iron is rated at 0.62 kW when connected to a 120-V source. What current does the waffle iron carry
q1. a cart starts from rest at the top of the tilted track. assume the track is frictionless. the cart passes photo
Compute the force that acts on a square access hatch at the bottom of the tank that measures 0.25m by 0.25m.
Consider a 60 W light bulb with a 2.0m long tungsten filament connected to a 120V source, Determine the resistance of the filament
A block of mass mb is attached to one end of a spring and is sliding on a horizontal frictionless surface. the other end of the spring is fixed. find the new period and new amplitude of the motion
Assuming that the acceleration is uniform when the racquet is applied over a distance of 0.52 m, illustrate what is the magnitude of the force exerted on the ball by the racquet?
A Carnot engine with a hot-reservoir temperature of 360 has the same thermal efficiency. What is the cold-reservoir temperature in C?
Find out how fast a GPS satellite is moving relative to someone on the ground and from that how much slower time runs where it is in orbit relative to someone on the ground.
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