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Radius of rotation of the hanging mass in apparatus in lab M20a is set to 10.0 cm. When the hanging mass is 45.0 g, the suspended mass reaches required position when its tangential speed is 0.250 m/s. Determine:
a) centripetal force and
b) suspended mass.
Suppose a duck lives in a universe in which h = 2? J · s. The duck has a mass of 2.70 kg and is initially known to be within a pond 1.90 m wide. determine the uncertainty in the duck's position after this time interval
A nervous physicist worries that the two metal shelves of his wood frame bookcase might obtain a high voltage difference if charged by static electricity, What is the capacitance of the empty shelves if they have area 0.7 × 103 cm2
A piano is brought upstairs by two workers. Due to a mistake by one of the workers, the piano rolls down the stairs and finally comes to rest by the outside door.
A proton accelerates from rest in a uniform electric field of 675 N/C. At some later time, its speed is 1.35 106 m/s. (a) Find the magnitude of the acceleration of the proton.
A light ray initially in water enters a transparent substance at an angle of incidence of 39.0°, Calculate the speed of light in the transparent substance
In a slow-pitch softball game, a 0.200 kg softball crossed the plate at 18.00 m/s at an angle of 45.0° below the horizontal. Determine the impulse delivered to the ball
A hydrogen atom has an angular momentum of 1.055x10^-34 kg.m^2/s. According to the Bohr model, what is the energy (eV) associated with this state
Two children ride on a merry-go-round. One is 2 m from the axis of rotation and the other is 4 m from it. Which child has the larger linear speed and acceleration
At this point, person doing the laundry opens the lid, and a safety switch turns off the washer. The tub smoothly slows to rest in 11-s. Through how many revolutions does the tub turn while it is in motion.
There is a square with 4 charges. q3 is 3x10^-6 C and in the top left q4 is -2x10^-6 C and in the top right q2 is 2x10^-6 C and in the bottom left q1 is 4x10^-6 C and in the bottom left The distance between each charge on the outer edge of the squ..
An 85-g arrow is red from a bow whose string exerts a constant force of 105 N on the arrow over a distance of 75 cm. Illustrate what is the speed of the arrow as it leaves the bow?
An ideal monatomic gas expands isothermally from 0.500 m3 to 1.25 m3 at a constant temperature of 630 K, Find the thermal energy transfer Q
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