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A solar water heater for domestic hot-water supply uses solar collecting panels with a collection efficiency of 47.0% in a location where the average solar-energy input is 200 W/m^2...... If the water comes into the house at 15.0C and is to be heated to 60.0C, what volume of water can be heated per hour if the area of the collector is 26.5m^2........ answer in L, Any help would be wonderful
a 69 kg short track ice skater is racing at a speed of 11 m/s when he falls down and slides across the ice into a padded wall that brings him to rest. how much work is done by the all while stopping the ice skater
An alpha particle (charge +2e) moves with velocity v = 5.0i - 3.0j in a magnetic field B = -4.0i + 2.5j, What is the magnetic force on the alpha particle
In a certain laboratory experiment a steel ball is released from rest near the top of a 30 incline ramp from vertical height h above the end of the ramp. Determine the magnitude of the linear velocity of the center mass of the sphere at the bottom ..
Male mosquitoes in the mood for mating find female mosquitoes of their own species by listening for the characteristic "buzzing" frequency of the female's wing beats
A musician plays a string on a guitar that has a fundamental frequency of 330.0 Hz. The string is 64.2 cm long and has a mass of 0.316 g. At what speed do the waves travel on the string
Two slits separated by 0.0530 mm and located 1.40 m from a viewing screen are illuminated with monochromatic light. Find the separation between adjacent bright fringes
The springs of a 1,349.37 kg car compress 5.0 mm when its 68-kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations
A cave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. The lift is performed in three stages, each requiring a vertical distance of 14.0 m
A nuclear power plant produces an average of 4.90 × 103 MW of power during a year of operation. Find the corresponding change in mass of reactor fuel
A hot-air balloon is rising upward with a constant speed of 2.50m/s. when the balloon is 3.00 m above the ground, How much time elapses before the compass hits the ground
Consider an AC power supply that provides a voltage of 27sin(119t)volts, where t is in seconds. The power supply is hooked up to a 195 resistor. What is the mean current through the resistor
At one instant a bicyclist is 28.0 m due east of a park's flagpole, going due south with a speed of 11.0 m/s. Then 24.0 s later, the cyclist is 26.0 m due north of the flagpole, going due east with a speed of 11.0 m/s. For the cyclist in this 24.0 s ..
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