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Use the definition for coefficient of volume expansion g = ?V/(V?q) to show that the change in densityDr of a substance when temperature changes by Dq is given by Dr = -grDq. What is the fractional change in the density of mercury when temperature changes for 30oC to -10oC. The density of mercury at 30oC is 13600 kgm-3.
A camera is supplied with two interchangeable lenses, whose focal lengths are 35.0 and 150.0 mm. A woman whose height is 1.80 m stands 8.00 m in front of the camera. What is the height (including sign) of her image on the film, as produced by each..
A traveler flew due east from city A to city B 150 miles away, and then made a connecting flight to city C 250 miles away in a direction that is 60o north of west, Find the net displacement of the person
A spherical asteroid with radius of 17.3 km has uniform density 3500 kg/m^3. Find the gravitational acceleration at the asteroid's surface
A floodlight with a mass of 20.0 kg is used to clarify the parking lot. The floodlight is supported at the end of a horizontal beam that is hinged to a vertical pole.
Two capacitors, C1 = 30 µF and C2 = 4.0 µF, are connected in parallel and charged with a 110 V power supply. Calculate the total energy stored in two capacitors
An Olympic long jumper leaves the ground at an angle of 23 degrees and travels through the air a horizontal distance of 9.7 meters before landing
The temperature in Browning, Montana, was 44.0 °F on January 23, 1916. The next day the temperature plummeted to - 56.0 °F. What was the temperature change in Celsius degrees?
Block A with mass 3.72 kg travels with speed vi=3.74 m/s on a smooth horizontal surface and collides with a stationary block B whose mass is 2.29 kg. How much kinetic energy was lost in the collision
A charge of q= +7.5uC is located in an electricfireld. The x & y components of the electric field are Ex=6.00 X 10^3 N/C and Ey = 8.00 X 10^3 N/Crespecitvely. What is the magnitude of the force on thecharge?
An 18.0g arrow is fired into a 3.00kg pumpkin suspended on a string. Calculate the velocity of the arrow just before it enters the pumpkin
the velocity of an airplane is 50km/hr due north. the plane the plane flies into a cross wind of 50km/hr due east at a right angle
In the deep ocean, a water wave with wavelength 95 m travels at 12 m/s. What will be the vertical position of the boat
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