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The coefficient of kinetic friction between the sledge and surface is 0.500. What is the mechanical energy lost due to friction?
A car travels at a constant speed around a circular track whose radius is 2.0 km. The car goes once around the track in 360 s. What is the magnitude of the centripetal acceleration of the car?
A 0.075 kg toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.33 m/s in a horizontal circle of radius 0.47 m, as illustrated
At a lumberjack competition an axe with a mass of 1.25 kg is thrown at a target with a speed of 43 m/s. When it hits the target, it penetrates to a depth of 0.047 m. (a) What was the average force e
Use energy methods to calculate the speed of the climbers after the lower one has descended 1.80 m starting from rest. What would be the speed of the climbers after they had moved 1.80 m?
Calculate the magnitude and direction of the current induced in a circular ring of radius 16 cm and resistance 3.7 ohms that encircles the magnetic field region. Please show work.
What are the magnitude and the direction of the net (resultant) force exerted by these two charges on a negative point charge q3=-0.6nC located at the origin>? (k=8.99x10? N*m²/C²)
Which of Newton's laws best explains why the work done on the gas is the negative of the work done on the environment?
What will be the limit on its mass resolution (in kg) for ions in this mass range, that is, those whose mass is on the order of that of a carbon atom?
The straight sides of the slide are 80 in length and 10 apart with a semicircular bend at the end. For what slide extensions will the microphone detect a maximum of sound intensity?
A 10 lb block is attached to an unstretched spring of constant k = 12 lb/in. The coefficient of static and kinetic friction between the block and the plane are 0.6 and 0.4 respectively. if a force i
An automobile traveling at a constant speed rounds a circular curve of radius 300 feet in 7.5 seconds. if the curve causes the car coming out of the curve to move in a direction perpendicular to the
A satellite has a mass of 5800 kg and is in a circular orbit 3.50 x 105 m above the surface of a planet. The period of the orbit is two hours. The radius of the planet is 4.25 x 106 m. What is the tru
For a speed of 20 m/s, at what value of the distance d should a driver locate his car if he wishes to stay on a circular path without depending on friction?
Two charged particles, Q1=+5nC and Q2= -3nC,are separated by 35cm. a) What is the electric potential energy of the pair? Explain the significance of the algebraic sign of your answer.
A 10-lb block is attached to an unstretched spring of constant k. If a force F is slowly applied to the block until the tension in the spring reaches 20 lb and then suddenly removed, k = 12 lb/in. D
What are the magnitude and the direction of the net (resultant) force exerted by these two charges on a negative point charge q3 = -0.6nC located at the origin>? (k = 8.99 x 10? N*m²/C²
A gas changes in volume from 0.790 m^3 to 0.260 m^3 at a constant pressure of 1.20 x 10^5 Pa. (a) How much work is done on the gas? (b) How much work is done by the gas on its environment?
How much heat energy is required to melt a 20 g block of silver at 20 degrees C? The melting point of silver is 960 degrees C, its specific heat is 0.056 cal/gram degrees C, and its heat of fusion i
Your forensic chemistry group, working closely with local law enforcement agencies, has acquired a mass spectrometer similar to that discussed in the text.
For what slide extensions will the microphone detect a maximum of sound intensity?
The current through the solenoid is increased from 0 to 10 A in 5.0 s. What is the value of the current in the small coil during this time?