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Find one light and one heavy book. Put one of them at the edge of the table and use one hand to gently push it over the edge. Catch it with the other hand about 1 ft=30 cm below the edge of the table. Then do the same with the other book. (Don't choose a book so heavy that it'll hurt your hand, or so valuable that you'll be afraid to damage it!) Compare how much of a " push" your receiving hand feels from the heavy book and from the light book. Explain the difference. [Hint: are the books falling at the same speed at the moment they hit your hand?]
Four identical charges (+3.0 µC each)are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
question1a 150 30.0-cm-diameter turntable rotates on frictionless bearings at 61.0. a 17.0 block sits at the center of
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 415 N and F2 = 354 N. What is the resultant of these two forces
A person who weighs 635 N is riding a 98 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 7.25 105 Pa, what is the area of contact between each tire and the ..
Two 2.0-g pith balls hang in air on essentially weightless cotton threads 50-cm long from a common point of support. Find the magnitude of the charge on each ball
A 400 ohm resistor and a 6.00 uf capacitor are connected in parallel to and AC generator that supplies a voltage of amplitude 310 V at an angular frequency 57.3 Hz. Find the current amplitude in the resistor.
A 520 turn circular-loop coil 14.5 cm in diameter is originally aligned so that its axis is parallel to Earth's magnetic field. In 2.82 ms the coil is flipped thus that its axis is perpendicular to the Earth's magnetic field.
A 3440-kg spacecraft is in a circular orbit a distance1850 km above the surface of Mars.How much work must the spacecraft engines perform to move the spacecraft to a circular orbit that is 4360 km above the surface?
A spherical capacitor is formed from two concentric spherical conducting shells separated with vacuum. The inner sphere has a radius of 12.4 cm, and the outer sphere has a radius of 15.0 cm. A potential dissimilarity of 120 V is applied to the capaci..
Runner A is initially 4.0mi west of a flagpole and is running with a constant velocity of 2.0 mi/h due east. How far are the runners from the pole when they meet
A parallel-plate capacitor is charged to a potential difference of 12 V. The area on each plate is 20 cm2 andthe spacing between plates is 0.15 mm. Find thef ollowing: the electric field between the two plates. the total charge on each plate.
A 51 crate, starting from rest, is pulled across a floor with a constant horizontal force of 250 . For the first 11.5 the floor is frictionless, and for the next 11.5 the coefficient of friction is 0.16. what's the final speed.
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