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A visual inspection of an insect with mass 0.4mg (milligrams) suggest that its uncertainty in postion is 0.5um (mirco meters), apparently stationary at this point. How fast could the insect be moving? Show all work
A man lifts a 20.0-kg bucket of concrete from the ground up to the top of a 20.0-m tall building. How much work was done by the man in lifting the bucket
A steel safe with mass 2200 kg falls onto concrete. Just before hitting the concrete its speed is 40 m/s, and it smashes without rebounding and ends up being 0.06 m shorter than before. What is an approximate magnitude of the force exerted on the ..
A pair of speakers separated by 0.7 m is driven by the same oscillator at a frequency of 674Hz. An observer, first positioned at one of the speakers, begins to walk along a line perpendicular to the line joining the speakers. (Assume the speed of ..
The left mass (10 kg) has a coefficient of kinetic friction between itself and the table of .25, calculate the contact force that acts between the masses
An object of mass 2.00 kg is held at a position A, a vertical height of 20.0 m above the ground. Point B is 8.00 m directly below A. Neglect air resistance and use g = 10.0 m/s.
A charge of +2.00 x 10^-9 C is placed at x = 0.0 m. A second charge of +4.00 x 10^-9 C is placed at x = 1.5 m.
two parrel,very long straight wires separated by 10 cm are carrying 2.0 A and 4.0 A in opposite direction. where the magnetic field is Zero
A long wire is known to have a radius greater than 5.2 mm and to carry a current that is uniformly distributed over its cross section, What is the radius (in mm) of the wire
A solid sphere of radius R carries a volume charge density ?=?0e^r/R, Find an expression for the electric field strength at the sphere's surface
A 55kg pole vaulter running at 10m/s vaults over the bar. If the vaulter's horizontal component of velocity over the bar is 1.10m/s and air resistance is disregarded, how high was jump.
In the park, several children with a total mass of 240 kg are riding a merry-go-round with a rotational inertia of 1500 Kg*ms2 and a radius of 2,2m. what is the rotational velocity after the children move tot he center, igoring frictional torque
A planet of mass 6 × 1024 kg is at location ‹ -3 × 1011, 8 × 1011, 0 › m. A star of mass 9 × 1030 kg is at location ‹ 7 × 1011, -5 × 1011, 0 › m. What is the force exerted on the planet by the star? (It will probably be helpful to draw a diagr..
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