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A bowling ball (mass = 7.2 kg, radius = 0.12 m) and a billiard ball (mass = 0.45 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, is dropped from same point at t = 190 ms. (a) How far below the release point is the center of mass of two stones at t = 390 ms? (Neither stone has yet reached the gr..
Average relative intensity of a person's voice is 58 dB. A microphone and amplification system increases the relative intensity to 70 dB. By what factor did the amplification system increase the sound intensity?
A 0.70-m-diameter solid sphere can be rotated about an axis through its center by a torque of 12.8m?N which accelerates it uniformly from rest through a total of 170 revolutions in 14.0s
The dipole moment of a water molecule in liquid water is 6.2×10-30 C•m, and the effective diameter of the water molecule is 2.8×10-10 m. In an earlier homework problem the effective dipole charge separation for water was calculated as 1.9×10-11 m.
instructions for ?nding a buried treasure include the following go 304.2 paces at 209? turn to 183? and walk 275 paces
A 12.00kg runaway grocery cart runs into a spring with spring constant 260-N/m and compresses it by 65 cm. What was the speed of the cart just before it hit spring.
A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.5 kg and the sign has a mass of ms = 15.9 kg. What is the net force the hinge exerts on the beam
visible light has a wavelength of approx 0.5 um. What is its frequency in Hz. EM radiation has a frequency of approx 3GHz, what is its wavelength in centimeters.
142.3 cm and not more than 142.6 cm. What is the relative uncertainty of the measurement
How many 119W light bulbs can you use in a 134V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel that means that the potential difference across each light bulb is 134 V.)
An electric dipole is formed from +/-4.0 nC point charges spaced 3mm apart. The dipole is cantered at the origin, oriented along the y-axis. What is an electric field strength at point (x,y) = ( 6.0 cm, 0 cm)
A 30 cm spring is compressed to 2 cm. a force of 200 N was used to do this. How much potential energy is stored in the spring
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