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A child and a sled with a combined mass of 50.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.00 m/s at the bottom, what is the height of the hill?
A Carnot cycle uses a cold reservoir at 280 K. In each cycle, 2500 J of heat is supplied and 1200 J of work is done. What is the temperature of the hot reservoir
A transformer has a primary coil with 1200 turns and a secondary coil with 225.0 turns. what is the voltage output from the secondary coil
An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 11.0 m/s in 4.40 s. find the magnitude and direction of the bird's acceleration
A metal plate of area 0.15 meters squared is on top of a surface. The plate and surface are separated by a 0.3 mm film of lubricant. what is the dynamic viscosity
A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the car's centripetal acceleration? What is the centripetal force that acts on the car?
A 2.00 kg block is on an inclined plane which makes up an angle of 52 degrees to the horizontal. Find the speed of the block at the bottom of the incline plane
The mousetrap car has a mass of 100 grams and starts travelling at the speed of 1.80 m/s and after 5seconds get the rested? What force did the motor exert.
Two geekie physics students with a combined mass of 133 kg jump into their old car to run out for some late night pizza. What is mass of the car
A nucleus of the boron-11 isotope consists of five protons and six neutrons. evaluate the magnitude and direction of the electric field
A single bead can slide with negligible friction on a wire
A standing wave is oscillating at 140 Hz on a string, as shown in the figure. What is the speed of traveling waves on this string
Two parallel wires are 5 m long. They are seperated by a perpendicular distance of 1 cm and carry currents of 20 A, Find the interaction force between the wires
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