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A 15 kilogram mass slides down an inclined plane, which makes an angle of 37o with the horizontal. The coefficient of kinetic friction is 0.40. Estimate what is the acceleration of the mass.
A dentist uses a small mirror of radius 45 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 14 mm from the tooth, what is the magnification of the resulting image.
The magnetic flux through one turn of a 54-turn coil of wire is reduced from 40.3 Wb to 5.6 Wb in 0.10 s. Find the total resistance of the wire
A person finds the front windshield of him car covered with ice at -10.2 °C. Compute how much heat in joules is needed to melt the ice
A substance has a melting point of 20° C and a heat of fusion of 2.9 × 104 J/kg. The boiling point is 150° C and the heat of vaporization is 5.8 × 104 J/kg at a pressure of one atmosphere. The specific heats for the solid, liquid, and gaseous phases ..
An extreme skier, starting from rest, coasts down a mountain slopethat makes an angle 25.0° with the horizontal. How fast is she going just before she lands
a moving 4.30 kg block collides with a horizontal spring whose spring constant is 346 nm. the block compresses the
A mass spectrometer applies a voltage of 2 kV to accelerate a singly charged positive ion. A magnetic field of B = 0.400 T then bends the ion into a circular path of radius 0.305m. What is the mass of the ion.
A cosmic-ray proton in interstellar space has an energy of 10.0 MeV and executes a circular orbit having a radius equal to that of Mercury’s orbit around the Sun (5.80 × 1010 m). What is the magnetic field in that region of space?
a small mass m of cold water whose temperature is 0C is poured into a lake whose temperature is 10C. find is this process reversible or irreversible
A temperature of absolute zero occurs at -273.15°C. Calculate this temperature on the Fahrenheit scale
With the switch open the ammeter reads 1.00 A. What is the resistance of resistor R2 to an appropriate precision and what is the potential difference across R2 when the switch is open?
A race car is one lap behind the lead car when the lead car has 43 laps to go in a race. If the speed of the lead car is 54.2 m/s, what should be the average speed of the second car to catch the lead car just before the end of the race (i.e. right..
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