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Very fine smoke particles are suspended in air. The translational rms speed of a smoke particle is 2.3 x 10-3 m/s, and the temperature is 285 K. Find the mass of a particle.
Suppose a 17-cm -diameter loop of wire is oriented for maximum torque in the earth's field. What current would it need to carry in order to experience a very modest 1.0x10-3N?
Two plane mirrors are parallel to each other and spaced 20 cm apart. A luminous point object is placed between them and 5 cm from one mirror. What are the distances from eac
Dan is gliding on his skateboard at 3.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit t
A 20 kg satellite has a circular orbit with a period of 2.3 h and a radius of 6.5 106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on
A hot-air balloon has just lifted off and is rising at the fix rate of 2.0m/s. suddenly one of the passengers realizes she has left her camera on the floor. compute how high
An unknown substance has a mass of 0.125 kg and an initial temperature of97.5°C. The substance is then dropped into a calorimeter made of aluminum containing 0.285 kg of wat
A 120-V motor has mechanical power output of 3.00 hp. It is 88.0% efficient in converting power that it takes in by electrical transmission into mechanical power. Find the c
A car turns in a circle in an empty parking lot. The speed that the car is moving is 15 meter per second. Find how many meters is the minimum radius of the circle that the car
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