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An 8.71-kg block slides with an initial speed of 1.62 m/s down a ramp inclined at an angle of 27.0° with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.72. Use energy conservation to find the distance the block slides before coming to rest.
A small glass bead has been charged to + 30{rm nC} . a)What is the magnitude of the acceleration of a proton that is 3.0{rm cm} from the center of the bead? b)What is the magnitude of the acceleration of an electron that is 3.0{rm cm} from the cen..
According to the Guinness Book of World Records (1990 edition, p. 169), the highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15 cm (5.9 in) long. Imagine the speed quoted is that of the end of the rod.
You switch from a 1.40NA 60x oil immersion objective to a 0.5NA 20x air immersion objective. What is the acceptance angle (in degrees) for the oil immersion objective
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. How much energy is required to boil away M kg of water
A Cepheid variable has been found to have a period of 22 days, from this its luminosity is determined to be 2.8 x 1029 W, calculate the distance to the Cepheid
A child in danger of drowning in a river is being carried downstream by a current that has a speed of 2.75 km/hr. The child is 0.560 km from shore and 0.750 km upstream of a boat landing when a rescue boat sets out. If the boat proceeds at its maximu..
Your grandfather clock's pendulum has a length of 0.9939 m, how should you adjust the length of the pendulum
700 g of an unknown metal powder at Thot = 78°C are dropped into a negligible heat capacity calorimeter containing 140 g of water at 11°C, Calculate the specific heat of the metal powder
Two balls, of masses = 60 and = 70, are suspended. The lighter ball is pulled away to a 67 angle with the vertical and released. Suppose that the positive axis is directed to the right.
A particle moves with constant acceleration a . The expression vi+at represents the particle's velocity at what instant in time? Here are the choices.
Two balls of the same mass are accelerated by different net forces such that one ball gains a velocity twice that of the other ball in the process. Is the work done by the net force acting on the faster moving ball twice that done on the slower mo..
Suppose you have a lens system that is to be used primarily for 770 nm light. What is the second thinnest coating of fluorite that would be nonreflective for this wavelength
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