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The world long jump record is 8.95 m (Mike Powell, USA, 1991). Treated as a projectile, what is the maximum range (in m) obtainable by a person if he has a take-off speed of 9.50 m/s?
What would be the percentage change in volume of a cube of aluminum that measured 1.50 on a side when at the ocean surface. how much did the aluminum cube's volume change.
a train on a straight level track has an initial speed of 37.0 kmh . a uniform acceleration of 1.10 ms2 is applied
A 4.5-kg, three legged stool supports a 68-kg person. If each leg of the stool has a cross-sectional diameter of 3.0 cm, determine the pressure exerted on the floor by each leg
a device with a resistance of 200.0k is connected to a 10v battery. how much power does the device use?a 0.050 mwb 0.50
A 77-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 841 N. What is the acceleration of the elevator
A beam of hydrogen molecules (H2) is directed toward a wall, at an angle of 50° with the normal to the wall. What is the beam's pressure on the wall
What is the angular displacement of this fan blade (in rads) for a time interval of 25.0 ms?
Yellow-green light of wavelength 550 nm in air is incident on the surface of a flat piece of crown glass at an angle of 60. What is the angle of refraction of the light
A bullet weighting 10g is fired with a velocity of 088 m/s. After passing through a mud will 1m thick, its velocity decreases 10 100 m/s. Find the average resistance offered by the mud wall.
A typical flashlight battery will produce a 0.50-A current for about 3 h before losing its charge. Determine the total number of electrons
Consider Joule's experiment described in the insight below. Assume the mass m = 2.5 kg and the fluid is water with a volume of 1.19 L. What is the increase in the temperature of the water
Do sound waves exhibit diffraction effects? If so, determine the "slit" width that would diffract an audible sound wave (frequency between 20 Hz and 20 kHz). Would a doorway work or do you need a different sized opening?
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